Hudson 1938 Terraplane Owner's Manual

TO THE OWNER

of this

HUDSON TERRAPLANE Motor Car

We are indeed happy that your selection of a new motor car has
been a Hudson product.

We share in your pride of ownership and sincerely trust that you may
derive the many miles of enjoyable service to which you looked
forward when purchasing it.

Considerable money and time have been spent in designing and
manufacturing your new Hudson Terraplane car, and we believe it
is your desire to protect the investment in your purchase to the utmost.

Therefore, we have prepared this manual which incorporates com­prehensive information to enable you to render the attention that such
a fine piece of mechanism as this motor car deserves. Complete
satisfaction can be obtained by carefully following the lubrication and
inspection instructions as well as other helpful information contained
herein. We recommend that you read it carefully, then place it in
the locker box compartment for ready reference should it be
needed later.

Hudson dealers everywhere are fully equipped to render you uniform
service at moderate prices. We earnestly recommend to you their
expert and friendly attention to your car.

HUDSON MOTOR CAR COMPANY
Service Department
Detroit, Michigan

Authorized Hudson Service

Station

Authorized Hudson dealers establish their identity by displaying the "Hudson
Terraplane Authorized Service Sign" illustrated below.

This sign is your assurance that the dealer is prepared to service your car
with only "Genuine Hudson and H U D S O N T E R R A P L A N E
Service Parts." The mechanics employed by this establishment are
trained to Hudson factory practices and procedures. The Hudson
dealer displaying this sign is also your assurance that his shop is
equipped with Hudson factory-tested and approved
service tools to insure fast, efficient and dependable service opera­tions at fair prices.
Wherever you may be traveling, the Hudson dealer displaying this sign
is your assurance of friendly Hudson service.

WARRANTY

"We warrant each new passenger automobile manufactured
by us to be free from defects in material and workmanship
under normal use and service, our obligation under this war­ranty being limited to making good at our factory any part or
parts thereof, including all equipment or trade accessories
(except tires) supplied by the Car Manufacturer, which shall,
within ninety (90) days after making delivery of such vehicle
to the original purchaser, or before such vehicle has been driven
4,000 miles, whichever event shall first occur, be returned to us
with transportation charges prepaid, and which our examina­tion shall disclose to our satisfaction to have been thus
defective; this warranty being expressly in lieu of all other
warranties expressed or implied, and of all other obligations or
liabilities on our part, and we neither assume nor authorize any
other person to assume for us any other liability in connection
with the sale of our vehicles.

"This warranty shall not apply to any vehicle which shall
have been repaired or altered by other than an Authorized
Hudson dealer in any way so as, in the judgment of the
Manufacturer, to affect its stability or reliability, nor which
has been subject to misuse, negligence or accident."

HUDSON MOTOR CAR COMPANY

Detroit, Michigan, U S. A.

1. Upon delivery of your new Hudson Terraplane car the dealer will furnish you

with an Owner's Service Policy and Ownership Card, which entitles you to

Please see that these two forms (illustrated on next page) are properly filled in

and signed. Also carefully read the provisions of the Owner's Service Policy and

For your protection these forms should be placed in the locker box compartment

2. Be sure your battery and tires are registered and that a clear understanding of the

3. Read your Owner's Manual carefully to acquaint yourself with the various

4. Be diligent in the "break-in" of your car. The amount of satisfaction, comfort

and pride of ownership depends on the manner in which the car is operated

6. Duplicate keys are supplied with each car. Be sure key change numbers are noted

in the spaces provided on the Ownership Card. This is important, as insurance

regulations make it impossible to stamp the key change number on the lock

cylinder. Lost keys may be replaced by ordering from your Hudson dealer by

The keys with the round handle are matched to the ignition and right-hand door

safety lock. The keys with the octagonal shaped handle are matched to the

Avoid loss of valuable time and money by locking the door safety lock as well

To assure your car reaching you in good condition, and to protect the mechanism

by restricting top speed, a governor has been installed on your carburetor by the

factory. While the governor is in place it will restrict top speed and acceleration,

When your car is returned to your dealer for the 500-mile inspection, the governor

will be removed and the engine tuned up. Although the speed restriction has been

removed, you should continue to be diligent in operating the car at moderate

4 H U D S O N T E R R A P L A N E

These Items Are Important

replacement of any faulty parts in accordance with the Standard Warranty.

ask your dealer to explain any points that are not clear so that no misunderstand­ings will occur at a later date.

of your car so they will be handy should they ever be required.

battery and tire warranties is obtained.

details of the car and assure yourself of complete satisfaction in its operation.

during the first 1,000 miles of driving.

5. Have your dealer lubricate and thoroughly check your car periodically.

key change number.

instrument panel locker box lock (on Super Models only) and the rear compart­ment or trunk lid locks.

as ignition lock when the car is unoccupied.

Carburetor Governor

and will also slightly increase the carburetor air intake noise.

speeds until it has been properly run in.

O W N E R' S M A N U A L 5

6 H U D S O N T E R R A P L A N E

500-Mile Inspection Service

See provisions outlined in Owner's Service Policy.

The 500-mile inspection includes the following operations:

500-MILE NEW CAR INSPECTION

Lubrication and Inspection Procedure

1

Install Fender and Scat Covers

2

Check Window Regulator Operation

3

Check Operation of All Locks and Keys

4

Check Seat Adjustment Operation

5

Check Operation of Signals and Instru­ ments

6

Check Cowl Ventilator Operation

7

Check Operation of All Lights

8

Check Radio Operation

9

Check Windshield Wiper Operation

10

Check Electric Hand Operation

11

Check Cigar Lighter Operation

12

Lubricate Door Locks and Hinges

13

Lubricate Door Strikers and Dovetails

14

Lubricate Water Pump

15

Oil Generator

16

Oil Starter

17

Oil Hood Locks and Hinges

18

Check for Water Leaks

19

Tighten Cylinder Head Stud Nuts

20

Lubricate Hood Lacing (L.H. side)

21

Check Radiator Water Level (anti-freeze
in winter)

22

Check Fan Belt Adjustment

23

Check Battery and Connections

24

Check Generator Charging Rate

25

Check Fluid in Master Cylinder

26

Check Clutch Lubricant

27

Check Steering Gear Lubricant

28

Check Clutch Pedal Clearance

29

Oil Distributor (oiler and wick)

30

Oil Hood Locks and Hinges (R.H. side)

31

Oil Throttle Linkage

32

Check Air Cleaner for Oil

33

Lubricate Hood Lacing (R.H. side)

34

Remove Carburetor Governor

35

Adjust Tappets

36

Tune Up Engine

37

Check Tire Pressures

38

Check Wheel Alignment

39

Check Rear Wheel Hubs for Tightness

40

Check Pitman Arm for Tightness

41

Check Spring Clips

42

Check Front Wheel Bearing Adjustment

43

Check Wheel Huh Bolts

44

Change Engine Oil

45

Lubricate Clutch Throwout Bearing

46

Lubricate Pedals Shaft

47

Check Transmission Lubricant

48

Check Rear Axle Lubricant

49

Lubricate All Chassis Fittings

O W N E R' S M A N U A L 7

BREAKING-IN PERIOD

The pride of ownership, trouble-free performance and maximum life and
enjoyment you receive from your Hudson Terraplane car depends largely on the
manner in which your car is operated during the "breaking-in-period" or the first
thousand miles of driving.

Your car has been designed by capable engineers, in accordance with the best
practices determined by years of experience, built under the most rigid standards
of precision, and rigidly inspected throughout its manufacture to insure proper
clearances being maintained.

Before shipment from our factory the car was thoroughly lubricated to insure
proper lubrication to the finely finished parts. The lubricants used are of the
highest quality obtainable and have been selected only after being subjected to
laboratory test.

Failure to follow accepted practice, as described in the following paragraphs,
may result in damage to bearing surfaces, cylinder walls or pistons, or abnormal
increases in clearances, which will shorten the life and impair the performance of
the various units.

Be sure that the proper radiator water level is maintained at all times. Check
engine oil level frequently to insure sufficient lubrication.

Accelerate gently, as fast acceleration places heavy loads on the working
parts. Use second gear under adverse conditions. Never attempt to take a grade
in high for the mere sake of demonstrating power.

Careful application of brakes during the break-in period is also essential, as
brake linings and drums require proper run-in. Harsh braking in early life may
cause scored linings and drums as well as placing heavy loads on the driving
members.

Adhering to the following speed table will insure proper run-in of all units of
the car:

0-250 MILES

Do not exceed 40 miles per hour in high gear or 20 miles per hour in sec­ond. Do not accelerate rapidly. Use second gear on steep grades.

250-500 MILES

Do not exceed 50 miles per hour in high gear or 25 miles per hour in second.

500-1000 MILES

During this period the speed should not exceed 60 miles per hour.

8 H U D S O N T E R R A P L A N E

Number of Cylinders. 6 A.M.A. Horsepower Rating .21.6

Valve Tappet Clearance (Hot) Intake, .006"; Exhaust, .008"

LICENSE DATA

Body Types

DE LUXE MODELS SUPER MODELS

117" Wheelbase 117" Wheelbase

Starting Serial No. 81101 Starting Serial No. 82101
3-Passenger Coupe 3-Passenger Coupe
Victoria Coupe Victoria Coupe
Convertible Coupe Convertible Coupe
Brougham Brougham
Touring Brougham Touring Brougham
Convertible Brougham Convertible Brougham
Sedan Sedan

Touring Sedan Touring Sedan
Car Serial Number—Located on plate on right front door hinge pillar above upper

Hinge.

Engine Number—Stamped on boss near top and front at left side of cylinder block or

on top of cylinder block between Nos. 1 and 2 exhaust manifold flanges.

Cylinder Bore 3" Piston Displacement 212 cu. in.
Stroke of Piston

5"

TECHNICAL INFORMATION

Engine

Type 6 Cylinders en bloc
Compression Ratio—Standard 6.25 to 1

Optional 7 to 1

Actual Horsepower Devel-

oped— Series 81

6.25 to 1 Compression—Standard Head 96 @ 3900
7 to 1 Compression—Super Power Dome Head 102 @ 3900

Series 82

6.25 to 1 Compression—Standard Head 101 @ 4000

7 to 1 Compression—Super Power Dome Head 107 @ 4000
Number Main Bearings 3
Main Bearing Clearance

Main Bearing End Play .006"-.012"
Valve Material Silchrome Alloy Steel
Valve Head Diameter Intake, 1-3/8"; Exhaust,

.001"

1-3/8"

Camshaft Drive Gear
Connecting Rod Lower Bearing Clearance .001"; End Play, .006"-.010"
Piston Material Lo Ex Aluminum Alloy
Piston Type T Slot Cam Ground

Piston Weight, Ounces 10.75

Number of Piston Rings Compression, 2; Oil Control, 2

Lubricating System . Hudson Duo-flo Automatic

Capacity of Lubricating System 6 Quarts

Type Pressure Pump Circulation

Cooling System Capacity 12½ Quarts

Series 82 Automatic

Timing Dead Center

Series 82 Third Brush and Voltage Regulator

O W N E R' S M A N U A L 9

Skirt Clearance .002"

Width of Piston Rings Compression, 3/32"; Oil Control, 3/16"

Piston Ring Gap .009"-.011"

Oil Pump Type Oscillating Plunger
Oil Reservoir Capacity 5 Quarts

Cooling System

Radiator Type Ribbon Cellular

Fan Belt "V" Type

Fuel System

Carburetor—Series 81 Make, Carter; Type, Single Down-Draft; Size, 1¼"

Series 82 Make, Carter; Type, Duplex Down-Draft; Size, 1"

Choke Control—Series 81 Manual

Heat Control—Series 81 Manual
Series 82 Automatic

Fuel Delivery Pump
Air Cleaner—Standard Oil Wetted—Intake Silencer Type
Air Cleaner—Optional, Extra Cost Oil Bath—Intake Silencer Type
Gasoline Tank Capacity 16½ Gallons

Starting, Lighting and Ignition

Make Autolite
Spark Control Automatic

Firing Order 1-5-3-6-2-4

Distributor Gap .020"

Spark Plug Type—Standard Head. Champion J-8—Metric
Spark Plug Type—Super Power Dome Head Champion H-10—Metric

Spark Plug Size 14 Mm.
Spark Plug Gap .032"
Generator Regulation—Series 81 Third Brush

Generator Charging Rate—

Series 81 (without radio)

Maximum Cold, 19 Amps.; Minimum Cold, 17 Amps.
Maximum Hot*, 18 Amps.; Minimum Hot*, 16 Amps.

Series 82** Maximum Cold, 32 Amps.; Minimum Cold, 29 Amps.

Maximum Hot*, 29 Amps.; Minimum Hot*, 26 Amps.

*After engine has run 15 to 20 minutes indoors.
**Use these settings for Series 81 with radio.

10 H U D S O N T E R R A P L A N E

Low, 2.42: Second, 1.6; High, 1; Reverse, 2.99

Summer, S.A.E. 90 E.P.; Winter, S.A.E. 80 E.P.; Capacity, 2¾

Battery Make
Number Plates
Capacity
Dimensions—Length
Width
Height (over all)
Terminal Grounded

Lamp Bulb Specifications

C.P. Base Voltage Mazda No.

Head
Head—Export
Parking
Fender Lamp
Dash Signals
Instrument
Service Light
Stop and Tail
License Lamp
Dome

32-32
21-50

1½

3

1
1½
1½

3-21

3

15

Fuse—Headlamp Circuit, 20 Amps.
Accessory Circuit, 20 Amps.

Clutch

D. C.
D. C.

S. C.
S. C.
S. C.
S. C.
S. C.

D. C.

S. C.
S. C.

National

17

105 Ampere Hours

10 9/16"

7 1/4"

7 15/16"

Positive

6-8
6-8
6-8
6 8
6-8
6-8
6-8
6-8
6-8
6-8

2331
2520D
55
63
51
55
55
1158
63
87

Type
Clutch Pedal Clearance at Floor Boar

Transmission

Type
Gear Ratio
Lubrication—

Summer, S.A.E. 90 E.P.; Winter, S.A.E. 80 E.P.; Capacity, 3

Pounds or Pints (1.36 Kgs.)

Type
Bearing Type
Gear Ratio—Standard
Gear Ratio—Optional
Gear Ratio—Optional, Extra Cost
Lubrication—

Pounds or Pints (1.24 Kgs.)

Oil Cushioned, Single Plate

1½"

Selective

Rear Axle

Semi-Floating

Taper Roller Throughout

4 1/9:1
4 5/9:1

3 5/9:1 and 3 8/9:1

Clearance Between Lining and Drum .010"

Air Pressure-16 x 6.00 Front, 24; Rear, 32

Air Pressure-15 x 7.00 Front, 22; Rear, 28

Wheel Jack Bumper Type

O W N E R' S M A N U A L 11

Toe-in 0 to 1/4"

Front Axle

Caster 1° to 2"

Camber 1° to 1½º

Brakes

Type 4-Wheel Hydraulic
Size 10 1/16" x 1 3/4"

Clearance for Mechanical Follow-up 1 7/16"

Steering Gear

Type Variable Pitch Worm and Roller Tooth
Gear Reduction 18.2 to 1
Lubricant Summer and Winter, S.A.E. 90 E.P.

Tires

Size—Standard 16 x 6.00
Size—Optional 15 x 7.00

Chassis Dimensions

Wheelbase 117"
Tread Front, 56"; Rear, 591/2"
Road Clearance (Center) . Front Axle, 8 9/16"; Rear Axle, 8 7/16"

Over-all Length, including Bumpers—
Brougham 197¾"
Coupe 197¾"
Sedan 197¾"-204¾"

Over-all Width, including Fenders—
Front 71"
Rear 72"

Capacities

U. S. Imperial Metric

Gasoline Tank
Cooling System
Engine Crankcase
Engine Crankcase (refill)
Clutch
Transmission
Rear Axle

16½ Gals.
12¼ Qts.
6 Qts.
5 Qts.
1/3 Pt.
3 Lbs.
2¾ Lbs.

1¾ Gals.
10¼ Qts.
5 Qts.
4¼ Qts.
1/3 Pt.
3 Lbs.
2¾ Lbs.

62½ Liters
11¾ Liters
5¼ Liters
4¼ Liters
180 cc

1.36 Kgs.

1.24 Kgs.

12 H U D S O N T E R R A P L A N E

parts.

For your guidance, a chassis lubrication chart is pasted to the front cover of this

LUBRICATION

The subject of lubrication is one of the most important items we deal with in
this manual. Upon the interest displayed by the car owner on this subject,
in co-operation with his Hudson dealer, depends the amount of trouble-free
service he will derive from his car.

Your Hudson dealer is supplied with factory-approved lubrication methods and
specifications, and he only should be consulted on matters of lubrication.

The various units of the car require different types of lubricants and only those
grades specified should be used. Heavier lubricants tend to cause friction by
virtue of their inability to penetrate the close clearances between bearings.
Lighter than specified lubricants tend to break down under loads applied to the
closely fitted parts and will eventually result in premature replacement of

manual, and another quick reference lubrication and tire pressure chart will be

found on the left side of the dash in the engine compartment. Study these charts

The lubricants placed in your car at the time of manufacture have been

carefully tested and checked by our laboratory and NEED NOT be removed

The selection of an engine oil and change periods depend largely upon the car

owner. IN THE SELECTION OF AN OIL, THE REPUTATION OF THE

TION. HE IS RESPONSIBLE FOR THE QUALITY OF HIS PRODUCT

AND HIS REPUTATION IS THE CAR OWNER'S BEST INDICATION OF

The viscosity of a lubricant is simply a measure of its body or fluidity. The

S.A.E. viscosity numbers constitute a classification of lubricants in terms of

viscosity, or fluidity, but without

reference to any other characteristics

bers have been adopted by practically all

oil companies and no difficulty should

be experienced in obtaining the proper

pared and is shown on page 12. Reference

to this table will indicate to the car

owner the proper grade of lubricant to

select for the lowest atmospheric temperature

likely to be encountered before the next oil

The first oil change should be after the

car has been driven 500 miles and every

When the car is operated in very

dusty territories, it is to the owner's

quently to prevent the abrasives which have found their way into the engine

Consistently hard driving has harmful effects on engine oil and necessitates

On the other hand, operating a car for short distances at low speeds in winter

weather does not afford an opportunity for the engine to throw off the diluents

and condensation that accumulate in the crankcase; and, if the oil is not drained

Although we recommend changing engine oil at 2,000-mile intervals under

normal operation, more frequent draining is often necessary, depending on the

O W N E R' S M A N U A L 13

carefully and be diligent in following the instructions contained therein.

until the recommended change period has been reached.

Engine Oil Recommendations

REFINER OR MARKETER SHOULD BE TAKEN INTO CONSIDERA-

QUALITY.

or properties. The S.A.E. viscosity num-

grade of lubricant to meet seasonal re­quirements.

A quick reference table has been pre-

change.

2,000 miles thereafter, unless local con­ditions warrant more frequent changes.

Figure 1

advantage to change oil more fre­from causing untold damage to bearings, pistons, rings, valves, etc.
more frequent changing.

frequently, it will also have harmful effects on the engine.

owner's driving habits and the conditions under which the car is operated.

Under operating conditions, one quart of oil is retained in the crankcase, in

addition to the five quarts in the reservoir. If the oil reservoir is removed, one quart

The quantity of oil in the reservoir can be determined by the bayonet gauge

attached to the filler cap, Figure 1. When the oil level is down to the low mark,

approximately three-quarters of an inch from the bottom of the gauge, three quarts

of oil remain in the reservoir. Two additional quarts are required to bring the level

When the reservoir is drained by removal of the drain plug at the rear of the

reservoir, five quarts of oil should be installed through the opening in the left side of

All lubrication fittings and oilers should be

wiped off with a cloth dipped in kerosene

The oil cup (A), Figure 2, should be filled

with engine oil every 1,000 miles. The

distributor cap and rotor should be removed

and a few drops of engine oil applied to

wick (B) in the top of the shaft. Apply one

drop of oil on the breaker arm pivot (C), and

apply a light coating of vaseline on the cam

The front and rear starting motor bearings

ure 3, and should be lubri¬cated with a few

drops of engine oil every 1,000 miles.

The threads on the Bendix drive (C)

should be cleaned occasionally with a

brush and kerosene to remove gum and

dirt. Do not oil, as the kerosene adhering to

14 H U D S O N T E R R A P L A N E

Engine Oil Capacity

of oil should be put into the upper crankcase tray and five quarts in the reservoir.

up to the mark at the top of the "oil level range."

the crankcase, Figure 1.
Always maintain the oil level within the "oil level range" on the bayonet gauge.

EVERY 1,000 MILES

before applying grease gun.

Distributor

Figure 2

Figure 3

block (D). Avoid over-oiling.

Starting Motor

are provided with oilers (A) and (B), Fig-

Avoid over-oiling.

the threads will provide sufficient lubrica­tion for this part.

O W N E R' S M A N U A L 15

tor are also provided with oilers (A) and (B),

To prevent excessive gun pressures

from damaging the self-adjusting oil seal,

a metered lubrication fitting (A), Figure 5,

Lubricate the water pump through this

grade aluminum soap base lubricant until

Lubricate throttle linkage, Figure 6,

Generator

The front and rear bearings of the genera-

Figure 4, and should be lubricated with
engine oil every 1,000 miles. Do not over­lubricate.

Water Pump

is provided on the water pump.

fitting every 1,000 miles with a high-

excess lubricant flows out through open­ing at top of fitting.

Throttle Linkage

every 1,000 miles with engine oil to in­sure freedom of movement.

cated through a fitting located on the right

side of the clutch hell housing, Figure 7.

This should be lubricated with one ounce

of viscous chassis lubricant every 1,000

A lubrication fitting (A), Figure 8, is

provided on the clutch and brake pedals

16 H U D S O N T E R R A P L A N E

Clutch Throwout Bearing

The clutch throwout bearing is lubri-

miles.

Clutch and Brake Pedals Shaft

shaft and should be lubricated with vis­cous chassis lubricant every 1,000 miles.

The automatic clutch control governor

adapter, Figure 9, located on the left side

at the rear of the transmission, is fitted

with a metered lubrication fitting. This

fitting should be lubricated every 1,000

The front universal joint spline shaft

should be lubricated every 1,000 miles

with viscous chassis grease. To maintain

proper balance, a plug is fitted into the

universal joint (A), Figure 10, and this

ting installed to perform the operation. Be

sure the fitting is removed and the regular

plug reinstalled. Avoid over-lubricating

Fourteen lubrication fittings provide for

les and rear spring front pivot bolts.

These fittings should be lubricated with

viscous chassis lubricant every 1,000

miles. See lubrication chart for location

O W N E R' S M A N U A L 17

Automatic Clutch Control

Governor

(Optional equipment)

miles with viscous chassis lubricant.

Propeller Shaft Front Joint

should be removed and a lubrication fit-

to prevent damage to the oil seal.

Spring Shackles and Pivot

Bolts

lubrication of front and rear spring shack-

of fittings. Also see Figure 11.

Spindle pivot lubrication fittings (A),

Figure 12, tie rod end fittings (B) and

front spring seat fittings (C) should be

lubricated with viscous chassis lubricant

The drag link is provided with two

lubrication fittings, one at the rear, Figure

13, and one at the front. These fittings

should be lubricated with viscous chassis

Check fluid in brake master cylinder

uine Hudson Hydraulic Brake Fluid to

bring level up to within one-quarter inch

Use Genuine Hudson Hydraulic Brake

Fluid No. 5, except where continuous

sub-zero temperatures are encountered, in

which case No. 1 fluid should be used.

Genuine Hudson Hydraulic Brake Fluid is

available through Hudson dealers. Never

18 H U D S O N T E R R A P L A N E

Front Axle

every 1,000 miles.

Drag Link

lubricant every 1,000 miles.

Brakes

every 1,000 miles and add sufficient Gen-

of the top. See Figure 14.

use substitutes.

The standard carburetor air cleaner filter

oiled with S.A.E. 50 engine oil every 2,000

miles. Following extensive service, it may

be advisable to replace the filter unit which

The oil bath carburetor air cleaner which

sory should be cleaned and refilled with

S.A.E. 50 engine oil in summer and 20 W

O W N E R' S M A N U A L 19

1. Remove air cleaner from carburetor

by removing body brace bolt (A),

Figure 16, and cleaner body clamp

screw (B) at carburetor air horn. (On

Electric Hand equipped cars also

loosen Electric Hand air inlet pipe

sary, wash in kerosene and blow dry.

4. Remove old oil from oil sump, scrape

out dirt deposits and clean thoroughly

EVERY 2,000 MILES

Air Cleaner—Carburetor

unit should be cleaned in gasoline and re-

is available at low cost.

is available as optional equipment or acces-

engine oil in winter every 2,000 miles.

CLEANING AND RE-OILING INSTRUCTIONS

Standard Air Cleaner

1. Remove wing nut (A), Figure 15. 6. Reinstall filter unit.

2. Remove cover and pad (B). 7. Reinstall cover and pad (B) with

3. Remove filter unit (C). hard side of pad down.

4. Wash filter unit in gasoline to re- 8. Reinstall wing nut (A).
move all traces of dirt and dust and
drain or blow dry. Oil Bath Air Cleaner

5. Dip filter unit in S.A.E. 50 engine

(Optional equipment or accessory)

oil and drain off excess.

clamp screw (C).)

2. Remove wing nut (D).

3. Lift out filter unit (E) and, if neces-

with kerosene.Figure 16

Front wheel bearings (A), Figure 17,

should be cleaned and repacked with three

ounces of milled sodium soap base lubricant

every 5,000 miles. See page 60 for adjusting

The rear wheel bearings (A), Figure 18,

should be cleaned and repacked with one

and one-half ounces of milled sodium soap

base lubricant every 5,000 miles. See page

20 H U D S O N T E R R A P L A N E

5. Refill sump with one measured pint of new S.A.E. 50 engine oil in summer

7. Reinstall air cleaner on carburetor, tighten carburetor air horn clamp screw (B) (also

and 20 W in winter.

6. Check filter unit gasket, reinstall filter unit (E) and install wing nut (D).

Electric Hand inlet pipe clamp screw (C) if necessary), and body brace bolt (A).
More frequent cleaning depends upon local dust conditions.

EVERY 5,000 MILES

Front Wheel Bearings

procedure.

Rear Wheel Bearings

63 for adjusting procedure.

Hudsonite Clutch Compound is permanently

ever, it should be drained every 5,000

miles and refilled with Hudsonite Clutch

To insert Hudsonite, turn the engine until the

drain plug (A), Figure 19, in the front face

of the flywheel is visible through the timing

inspection hole in the left side of the engine

rear plate. Remove the plug and turn the

engine slowly until the star stamped in the

front face of the flywheel is visible

through the inspection hole. Allow a minute

gine until the filler hole again appears in

the timing hole and insert one-third pint of

Hudsonite. Replace plug and tighten securely. Hudsonite is available through all

sorbers with which your car is

equipped depends upon the quantity

Have your Hudson dealer drain and

refill each unit with five ounces of

Genuine Hudson Shock Absorber Fluid

O W N E R' S M A N U A L 21

Clutch

sealed into the clutch to prevent loss. How-

Compound.

in this position to drain, then turn the en-

Hudson dealers.

Figure 20

Shock Absorbers

Efficient operation of the direct­acting, self-compensating shock ab-

and quality of fluid installed in them.

every 5,000 miles. See Figure 20.

.

To assure freedom of operation the rear

wheel parking brake cables and conduits

sene. Remove cap screws at front conduit

abutment cap, spring clip and rear cable

abutment cap. Remove abutment caps.

Slide conduit forward on cable to expose

the entire covered portion of cable and

apply graphite grease as shown in Figure

To provide proper transmission lubrication,

stand the pressures developed between the

gear teeth and also flow freely into the

These qualities can be obtained in

S.A.E. 90 E.P. (extreme pressure) gear oil

for summer, and S.A.E. 80 E.P. gear oil

in winter. Three ounces of kerosene may

be added to the lubricant when hard shifting

is encountered during extremely cold

bricant every 5,000 miles. To drain old

lubricant, remove drain plug (A), Figure

22. After draining, replace plug securely.

Remove filler plug (B) and refill with

three pounds (or pints) of fresh oil of

proper specifications. Replace filler plug

cation is likewise important, inasmuch as

it must be capable of withstanding the

pressures developed between the gear

teeth, and also to flow freely to enter the

small clearances and circulate through the

22 H U D S O N T E R R A P L A N E

Brake Cables and Conduits

should be cleaned and graphite grease ap­plied every 5,000 miles.

Clean exposed portion of cables with kero-

21.

Transmission

the lubricant used must be able to with-

small clearances of the bearings.

weather.

It is advisable to change transmission lu-

securely.

Rear Axle

The lubricant selected for rear axle lubri-

These qualities can be obtained in S.A.E. 90 E.P. (extreme pressure) gear oil for

It is advisable to change rear axle lubricant every 5,000 miles. Always keep oil to

the level of oil filler plug (A), Figure 23. The old lubricant can be removed with

a special suction gun available for this purpose. Refill with two and three-quarter

pounds (or pints) of fresh oil of proper specifications. Replace filler plug securely.

cated every 5,000 miles. Use a good grade

of S.A.E. 90 E.P. (extreme pressure) gear

Remove filler plug (A), Figure 24, and

fill housing until lubricant reaches level of

The front and rear universal joints are

fitted with needle roller bearings and

the lubricant is sealed in at the time of

At 10,000-mile intervals the universal

joints should be disassembled, cleaned

O W N E R' S M A N U A L 23

summer and winter.

Steering Gear

The steering gear housing should be lubri-

oil in summer and winter.

filler hole. Replace plug securely.

Figure 24

EVERY 10,000 MILES

Spring Covers

Spring covers on front and rear springs (on Super Models only) should be

removed and repacked with viscous chassis lubricant every 10,000 miles.

Figure 25

Universal joints

assembly. See Figure 25.

and repacked with viscous chassis lu­bricant.
Your Hudson dealer is equipped to per­form this service.

24 H U D S O N T E R R A P L A N E

EVERY

Figure 26

15,000

Automatic Clutch Control

(Optional equipment)

To keep the automatic clutch
control power cylinder piston
leathers pliable and prevent vac­uum leaks, the power cylinder
should be lubricated every 15,000
miles with Genuine Hudson Shock
Absorber Fluid.
This can be accomplished by
removing plug (A), Figure 27, and
inserting one ounce of fluid into
the power cylinder. Avoid over­oiling. It is advisable to have
your Hudson dealer perform this
service.

MILES

Electric Hand

(Optional equipment)

To prevent the Electric Hand
power cylinder piston leathers
from drying out, the power cylinder
should be lubricated every 15,000
miles with Genuine Hudson Shock
Absorber Fluid.
To lubricate, remove elbow (A),
Figure 26, and inject one ounce of
fluid. Avoid over-oiling. It is ad­visable to have your Hudson dealer
perform this service.

Figure 8

Body Lubrication

Door striker plates and dove­tails (male) are provided with
lubricating wicks and should be
saturated periodically with light
engine oil.
Light engine oil should be in­serted periodically into door
hinge oil holes (A), Figure 28,
to prevent hinge squeaks.

O W N E R' S M A N U A L 25

Door check straps (B) and door latch tongues should be lubricated periodi-

cally with a stainless "Pencil Lubricant."

DUST STORM PRECAUTIONS

In view of the dust storms which have been prevalent during the past few
years, we feel the necessity of acquainting car owners with certain procedures to
follow in an endeavor to minimize the damage which these dust storms are apt
to cause.

When dust mixes with engine oil or chassis lubricant, it becomes a highly
abrasive substance which may cause untold damage to all working parts, such
as pistons, piston rings, cylinder blocks, valves, valve guides, bearings, carbure­tors, spring shackles and bushings.

Under such conditions it is imperative that more frequent attention be given to
chassis lubrication, engine oil change, air cleaner service and fuel system cleaning
than the periods outlined in this instruction book and lubrication chart.

The use of a special Oil Bath Carburetor Air Cleaner, Figure 16, which is
available as an option or may be purchased from Hudson dealers, will assist in large
measure in protecting the carburetor and engine from premature wear.

Tourists contemplating a trip through dust areas should have an Oil Bath
Carburetor Air Cleaner installed.

The frequency with which the air cleaner should be cleaned and re-oiled
depends, of course, upon local dust conditions. The protection which this type
of air cleaner affords will be appreciated by noting the accumulation of dust and
dirt found in the air cleaner oil reservoir just below the filter unit.

Listed below are points which should be checked and handled in accordance
with local conditions:

1. Fuel System:

(a) Clean and service air cleaner as outlined on page 19.
(a) Clean fuel lines.
(a) Clean carburetor.
(b) Clean fuel pump.

2. Crankcase:
(a) Clean ventilators and insert wads of fine metal gauze or fine mesh

screen in lower end.

(a) Drain oil, remove oil pan, clean thoroughly, reinstall and refill with

fresh new oil.

3. Chassis:
(a) Thoroughly lubricate all chassis fittings, being certain to force out old

lubricant to which dust or abrasives may adhere.

CARE OF THE FINISH

The high lustre finish lacquer on your car can be preserved indefinitely if

given proper attention.

Avoid wiping the finish when it is heavily coated with dust—it is better to
wash it carefully to avoid scratching. Spilling anti-freeze solutions or alcohol
on the finish is extremely dangerous and great care should be taken when adding
or checking these solutions. These spots should be rinsed immediately with
large quantities of water.

During the winter season when salt and calcium chloride are used on pavements to melt

ly. A film of Hudson Wax Polish will serve to provide added protection at this season of

26 H U D S O N T E R R A P L A N E

Washing

Washing the car is advisable whenever the finish is heavily caked with

mud

or so
dusty that wiping would scratch the surface. Also due to the general use of salt and
calcium chloride in some localities to melt snow and ice from the pavements, washing
the car more frequently in the winter months may be advisable. These chemicals are
highly corrosive and deteriorate the finish, both lacquer and chrome, if permitted to
remain.

Avoid washing the car in the sun or if the body metal is hot due to standing in the
sun. Permit the car to cool off naturally in a shady spot before washing. An ordinary
garden hose may be used to good advantage to soak the dirt loose before wiping it with
a sponge. The sponge should be rinsed frequently to remove abrasives that may cling
to it. A clean chamois should be used to dry the finish after it has been thoroughly
rinsed.

It may be noted when drying the finish that a slight amount of color may appear on
the chamois—however, this should cause no alarm as it is a natural condition of
lacquer due to exposure to the elements.

Oil or tar deposited on the finish may be removed by using a reliable tar remover
recommended by your Hudson dealer.

Polishing

Due to a slight dulling of the finish after exposure to the weather, it is recommended
that the finish be occasionally cleaned and polished with Hudson Cleaner and Wax
Base Polish to restore the lustre. However, if a more lasting high lustre is desired, it
may be obtained by applying a film of Hudson Wax Polish.

Hudson polishes are carefully compounded and are entirely free of destructive acids
and abrasives and may be purchased only through Hudson dealers. Avoid the use of
so-called "speed cleaners and polishes" as they do a quick job of cleaning but at the
same time remove considerable of the lacquer. Avoid polishing the car if it has been
standing in the sun. It is better to apply the polish when the body has cooled.

Chromium-Plated Finish

Chromium-plated parts other than bumper bars require little care other than an
occasional cleaning with a damp cloth to remove dust and dirt. No polish is necessary.

Bumper bars, on the other hand, are usually subjected to considerable scuffing and
scratching particularly due to parking and heavy traffic conditions and require consid­erably more care.

Unless deep scratches are looked after immediately, rust spots may appear. There­fore, as soon as possible after deep scratches are noticed, they should be cleaned and a
coat of clear lacquer applied. In the event rust spots have already appeared, clean the
rust off with a little mild kitchen cleanser before applying the lacquer.

ice and snow, the chromium-plated parts should be wiped or washed off more frequent-

the year.

O W N E R' S M A N U A L 27

It is advisable when cleaning soiled sections or spots to work in a circular

manner outside the area, working gradually toward the center. By this

Convertible Coupe and Convertible

Brougham tops frequently become spotted

through the lowering and raising operation.

mitted to remain for fear of discoloring the

By the use of Hudson Dry Cleaner soiled

areas can very easily be cleaned. The

proper method is to select an area slightly

larger than the area to be cleaned and rub

lightly in a circular manner, gradually

tional battery is used. This battery is

ment Policy by its manufacturer. To

Care of the Car Interior

The care of the interior of your car determines to a large measure the
resale value when you contemplate trading in or selling. It is not a
difflcult job to perform and the small amount of time thus expended
will be well repaid by the pride you will derive from its neat appearance.

All body joints are thoroughly sealed against the possibilities of dust
entering while driving on dusty roads. However, a certain amount of dust
and dirt will find its way into the car by various means and this, if allowed
to remain, has an abrasive action on the cloth and will in time cause the
upholstery cloth to show wear. It is, therefore, suggested that at least
once each month, or oftener if conditions warrant, the neat cushions be
removed and they and the seat backs and upholstered panels be thor­oughly brushed with a whisk broom and then vacuum-cleaned.

The nap on mohair upholstery can be easily restored to its normal
position if it should become matted down by covering the area with a
damp cloth and then steaming it with a hot iron.

Most spots which are apt to soil the car upholstery can be quickly and
neatly removed by the use of Hudson Upholstery Dry Cleaner or
Hudson Foam Solution Cleaner which are available from your Hudson
dealer.

method you will be certain not to leave an unsightly ring.

Care of the Convertible Coupe

and Convertible Brougham

Folding Top

These spots or soiled areas are often per-

top material.

working toward the center.

BATTERY

Registration

A 17-plate, 105 ampere hour Na-

covered by a Guarantee and Adjust-

28 H U D S O N T E R R A P L A N E

be entitled to the benefits of this Policy, the battery must be registered with a
National dealer within thirty (30) days after delivery of the car. Do not neglect
to make this registration.

Care

The battery requires little attention; however, this attention is absolutely

essential. Negligence will shorten the battery life and cause premature failure.

Therefore, for convenience of inspection and servicing, the battery is located
under the left front fender and is easily accessible through the left side of the
engine compartment. The battery is set in a tray and is provided with a sheet
metal cover to protect it from cold drafts during winter driving and the under­hood temperatures during summer months. As an added convenience, a hinged
lid (A), Figure 29, is provided in the cover directly over the battery cell caps, so
that it is merely necessary to lift the lid to take hydrometer readings and add
distilled water. The cover may be removed by merely removing two bolts along
the top flange and one bolt on the rear flange.

Owners will appreciate that with this arrangement it is not necessary to disturb
the driver or other passengers to check the battery for water. All danger of soiling
upholstery cloth is also eliminated by this feature.

It is not necessary to add acid to a battery except where leakage has
occurred. This must be done in conjunction with charging and should not be
attempted except by an experienced battery service man.

Distilled water should be added to the battery at such intervals as will insure
the plates being covered at all times. Usually water should be added twice a
month in warm weather and monthly in winter. During freezing weather,
water should be added just before the car is to be used.

To prevent corrosion of battery terminals and connections, apply a coating
of vaseline over the battery posts and strap terminals, making sure the terminals
are properly tightened. If corrosion occurs, clean posts and terminals with a
soda solution before applying the vaseline. When using the soda solution be
sure the cell caps are in place and be careful to prevent the soda from entering
the cells. Flush off well with water and dry top of battery.

Inspect the battery ground strap occasionally, as looseness at the battery or
fender support bracket or breakage will reduce the output for starting and a
complete break will cause failure of ignition system.

Have your Hudson dealer make periodic hydrometer readings to insure good
battery condition at all times. An occasional check of the battery and generator
charging rate should also be made with an accurate voltmeter and ammeter by
your Hudson dealer.

TIRES AND WHEELS

All wheels are demountable at the hub by prying off the outside hub cap and
removing the cap screws (A), Figure 29A, in the wheel mounting plate. When
replacing the cap screws, the final tightening locks them to prevent loosening in
operation. Be sure the cap screws are drawn down tightly.

Steel wheels are of the drop base type, permitting installation and removal
of the tires without separate locking rings or the use of any special tools. Four-

O W N E R' S M A N U A L 29

Hard steering on turns is ordinarily due to low front tire pressure. Wandering

on the road or weaving, tire screeching and the car leaning to one side or rolling

ply 16 x 6.00 tires are used as standard equipment on all models with four-ply
15 x 7.00 tires as optional equipment.

Removal and Installation

To remove a tire, deflate the tube.
Starting directly opposite the valve
stem and working in both directions to­ward the valve, press both beads of the
tire off the rim ledge down into the rim
well. Start removal of one bead at the
valve stem, working around the wheel
in both directions from this point. Pull
the valve back inside of the rim, remove
inner tube and remove the second bead
by the same procedure used to remove
the first.

To install a tire, inflate the tube until
just rounded out and insert into the casing,
placing the valve directly opposite the
double balancing mark (two dots) on the
side wall of front tires and single bal-

ancing mark (one dot) on rear tires. Place one bead over the rim and into the rim
well at one point, so that the remainder of the bead can be worked over the rim.
Press this bead onto its rim seat and insert valve stem through the hole in the rim.
After the valve is aligned in the hole, start application of the second bead directly
opposite the valve, pressing it into the rim well and working in both directions so
that the section of the bead at the valve is the last to be worked onto the rim.

Readjust, if necessary, so that the valve protrudes straight through the rim,
and pull the valve through from outside until seated snugly against the inside
of the rim.

Partially inflate and work both beads onto the rim seats, then complete in­flation.

Inflation Pressures

In all modern cars, due to high speeds, four-wheel brakes, and the desire
to obtain maximum riding comfort and tire life, it is essential that they be
checked for pressure at least once each week and oftener when touring.

Lower pressures than recommended will result in excessive tread wear and
make the tires more susceptible to bruises and breaks from impact with sharp
irregularities in the road surface. Lower than recommended pressures will often
affect the proper handling of the car.

on turns at high speed are traceable to low rear tire pressure.

30 H U D S O N T E R R A P L A N E

However, on the other hand, higher than recommended pressures reduce the

shock-absorbing qualities of the tires, but increase stability at high speeds.

For all-around average load and driving the following inflation pressures

are recommended:

Size Front Rear
16 x 6.00 24 Lbs. 32 Lbs.
15 x 7.00 22 Lbs. 28 Lbs.

Tire Wear

Due to increased thickness in tire treads, together with higher driving speeds,
faster acceleration and more effective braking, the tread will show uneven
wear and a cupping effect and is particularly noticeable on the front tires
which are subjected to braking action only, while in the case of the rear tires
the tread Wear is equalized due to both driving and braking action.

This is natural wear but can be controlled by reversing the direction of
rotation of the tires. It is recommended that the right and left wheel and tire
assemblies be interchanged when this wear becomes noticeable. Since the
height of the tread has been reduced by wear, the flexing will be lessened and
this change of position of tires will not only even up the wear but will in most
cases prevent reappearance.

Wheel and tire balance is carefully checked during the process of assem­bling; however, this balance may he changed by removal and reinstallation of
tires or by tire tread wear. In order to maintain original stability at high driving
speeds, have wheels and tires rebalanced whenever it is necessary to remove
and reinstall a tire on a wheel; or, if tire changes are not necessary, balance at
intervals of 5,000 miles. This operation can be readily and accurately done by
attaching sliding type balancing weights to the inside rim flange. The proper
position of these weights can, however, be determined only by the use of a
wheel balancing machine.

Spare Tires

The spare tire on Brougham, Convertible Brougham and Sedan models is
located on the floor of the rear compartment. In the 3-Passenger, 4-Passenger
and Convertible Coupe models the spare tire is located on the floor of the rear
deck.

Removal of Spare Tire from Vestibule

To remove the spare tire and wheel from the rear compartment of the body,
open the door and remove the mounting screw from the wheel clamp. The
wheel and tire can then be pulled out of its compartment.

TOOLS

The tool kit supplied with your car is placed in a separate compartment
located to the right of the spare tire compartment. This kit contains several
wrenches, hammer, screwdriver, spark plug wrench, jack base and starting
crank handle which also serves as a wheel bolt wrench and jack handle.

The starting crank extension is held in place at the top of the compartment
opening by means of two spring clips. By stowing the tool kit in its proper
location, rattles and annoying noises in the rear compartment can be avoided.

jack while the wheel is being removed. Remove jack, jack base and jack crank

per hour is said to be twice as great as at 40 miles per hour.

pedal evenly. Tire wear can be minimized by using good judgment in han-

pedal will be as effective (if not more so) as jamming on the brakes.

O W N E R' S M A N U A L 31

Car Jack

The car jack supplied in the tool kit is of the high lift type, designed to lift
both the front and rear ends of the car by placing it under the bumper frame
brackets.

Before raising the car, apply hand brakes to prevent car from rolling off the

from tool kit. Set square end of jack securely in base, insert jack crank in jack
and place jack under the bumper frame brackets so that they will engage in the
groove in the jack arm.

DRIVING HINTS FOR GASOLINE, OIL AND

TIRE ECONOMY

Gasoline Mileage

Your Hudson Terraplane is capable of very good gasoline mileage under normal
driving conditions. The mileage you obtain depends largely upon your driving
characteristics. Sudden acceleration, long periods of idling the engine, accelerat­ing the engine while the car is standing still, and high-speed driving all tend
to reduce gasoline economy.

We quote figures indicating how the normal economy of a car operating
at 20 miles per hour will vary under various driving conditions. At 40 miles
per hour 29% more gasoline is required than at 20 miles per hour, while 39%
more gasoline is required at 50 miles per hour than at 20 miles per hour, 54%
more is required at 60 miles per hour than at 20 miles per hour, and 82% more
gasoline is required at 70 miles per hour than at 20 miles per hour.

The above figures are representative of actual tests made with a number of
makes of cars. (For further information see "Fuel Compensation" on page 44.)

Oil Economy

Oil economy likewise is dependent on the speeds at which the car is driven.
At consistently high speeds due to higher operating engine temperature, engine
oil is naturally thinned down and usage becomes greater. Statistics based on actual
tests of a number of makes of cars indicate oil consumption at 50 miles per hour
to be nearly seven times greater than at 30 miles per hour.

Tire Wear

Fast acceleration, sudden braking from high speeds, under-inflation, and
continued fast driving all tend to decrease tire mileage. Tire wear at 50 miles

Generally speaking, normal driving and handling of your car will result in
increased gasoline, oil and tire mileage. While on the other hand, high-speed
driving is costlier, as it increases gasoline and oil consumption, reduces tire mileage
and places greater strain on the entire car.

In cases where high-speed driving is necessary, owners can minimize gasoline
consumption by avoiding sudden bursts of speed and depressing the accelerator

dling the brakes when approaching curves or turns. Even pressure on the brake

Through a thorough knowledge of the various features of your Hudson Terraplane

car you can derive a great deal of pleasure and comfort in motoring. We, therefore,

urge you to take a few minutes to read the following instructions before driving your

Your car was built for comfort, one of

toring. Provision has been made in the

front seat construction to provide for an

adjusting mechanism to arrange the seat

By raising the lever shown in Figure

30 , the front seat may be moved forward

When driving for long periods, which is not unusual these days, it is often

desirable to change the seat position, which tends to change the body posture and

The steering wheel has been designed

to afford a maximum of vision to the

ment door. The rim provides a natural

tion, a shim adjustment is provided in the

ing the shim (A), Figure 31, the height of

inch. An additional shim may

be installed to lower the wheel position.

Your Hudson dealer will be glad to make

32 H U D S O N T E R R A P L A N E

OPERATION

car:

Seat Adjustment

the prime factors in present-day mo-

in any desired position to suit the individ­ual driver's requirements.

or backward.

maintain a relaxed position.

Steering Wheel

instrument panel, particularly the speed­ometer located in the left-hand compart-

grip to prevent cramping of the hands.
To insure the best steering wheel posi-

steering gear column bracket. By remov-

the steering wheel may be raised approx­imately

5

/8

this adjustment should it be required.

The instruments on your 1938 Hudson Terraplane car have been arranged to

provide greater convenience and to place those instruments which are of greatest impor-

The speedometer, as you will note, has been placed directly ahead of the driver in

the left-hand locker box door, and, by arrangement of the steering wheel spokes,

it is clearly visible. In this location it is unnecessary for the driver to take his eyes off

The water temperature gauge is located at the extreme right of the instrument

perature gauge, at a glance indicates the condition of the generator charging circuit.

A small dial is provided in the indicator with the word "Not" located in the center. As

the ignition key is turned on, or when the engine is operating at idle speed, the word

Should the light turn on behind the small lens when the engine is operating

above idle speed, it indicates difficulty in the generator charging circuit and the

This type of indicator is used in preference to the conventional ammeter, inasmuch

as the generator charging rate is controlled by the voltage regulator and ampere

O W N E R' S M A N U A L 33

Instruments

tance as near to the driver's line of vision as possible. See Figure 32.

Speedometer

the road ahead to read the dial.

Water Temperature Gauge

cluster and registers the temperature of the cooling fluid in the engine block.

Teleflash Generator Charging Indicator

The teleflash generator charging indicator, located to the left of the water tem-

"Not" will be illuminated by a small bulb located behind the lens.

matter should immediately be checked by your Hudson dealer.

readings on the ammeter are misleading.

The teleflash oil pressure indicator is located to the left of the teleflash generator

A small lens with the word "No" is located in center of the indicator with a small

light bulb placed behind it. As the ignition key is turned on, the word "No" is

illuminated, indicating that the oiling system is not functioning. Immediately after the

engine is started the small light should turn out, indicating that the oil pump is

operating satisfactorily. A slight flickering of the light at idle speed should cause no

concern; however, should the light flicker or turn on while the engine is running above

The ignition switch is located in the center of the group just above the lower flange

of the instrument panel, Figure 32. Turning the key to the right or clockwise direction

The starter button is placed to the left of the ignition lock, Figure 32, within easy

reach of the driver. The engine can be cranked only by pressing the button after the

(Note: The engine may be cranked with the starter from the engine compartment

by removing the small cap at the back of the solenoid switch located on top of the

The main light switch, which controls the head, tail, instrument lamps and side

The switch has three positions: The "off" position is to the extreme left. Clockwise

rotation to the next position turns on parking, instrument and tail lamps, and extreme

When the headlamps are in bright position, the beam is controlled by the foot

switch located on the toe board left of the clutch pedal. By depressing the switch with

the left foot and releasing it, the headlight beam may be deflected down and to the

right curb line for safe passing, giving the oncoming driver maximum relief from

glare, or to the country driving position which projects the light beam a sufficient

The front compartment light switch on Super models is of the sliding type and is

34 H U D S O N T E R R A P L A N E

Teleflash Oil Pressure Indicator

charging indicator, and indicates at a glance the condition of the lubrication system.

idle speed, the engine should be turned off and the source of the difficulty ascertained.

Fuel Gauge

The fuel gauge is located at the extreme left of the instrument cluster and indi-

cates the fuel level in the gasoline tank.

Ignition Switch

turns on the ignition.

Starter Button

ignition key has been turned on.

starter and depressing the plunger.)

Light Switches

lamps when car is so equipped, is located to the right of the ignition switch, Figure 32.

right position turns on bright, instrument and tail lamps.

distance in front of the car to provide maximum illumination.

located on the right side of the lower flange of the instrument panel.

The dome lamp switch on Sedans, Broughams and Coupes is located on the right-

hand door lock pillar and is of the sliding type.

O W N E R' S M A N U A L 35

pacity for connecting accessories.

The windshield wipers are controlled by a knob located in the center of the top

surface of the instrument panel. Turning the knob to the left when the engine is running

places the wipers in motion. The off position is to the right or clockwise.

On cars equipped with automatic clutch control, which is optional equipment on all

models, a switch is provided on the left-hand side of the instrument panel, Figure 32.

When the knob is pushed in, the clutch is operated automatically. The clutch is then

disengaged merely by raising the foot off the accelerator pedal and re-engaged by

The locker box is fitted with a locking cylinder. The lock is unlocked by inserting

The cowl ventilator operating rod is located under the center of the instrument panel

The clutch pedal is located to the left cf the steering gear column and is used to

disengage the clutch in the conventional manner by depressing it fully to the floorboard.

Should the car be equipped with the Electric Hand, the clutch pedal must be

Fuses

To provide for greater accessibility the fuse
block, Figure 33, is separate from the main
light switch and is located on the lower
flange of the instrument panel. It has two
fuses, one for the lighting switch and the
other for accessories which may be added.
The accessory fuse is provided with two
terminals to make available sufficient ca-

Ash Receiver

An ash receiver of the drawer type is
conveniently located near the top in the
center of the instrument panel, and may be
removed to empty by pressing down the lip inside the receiver.

Windshield Wiper Control

Automatic Clutch Control

depressing the accelerator pedal.

Locker Box Lock—Super Models Only

the key, turning it to the right and pressing the center of the lock. See Figure 32.

Cowl Ventilator

and is adjustable to vary the degree of opening. See Figure 32.

Clutch Pedal

depressed fully to the floorboard when starting the engine.
Figure 33

page 64.

36 H U D S O N T E R R A P L A N E

"Riding" or resting the left foot on the clutch pedal while the car is in motion
should be avoided, as this produces a partially disengaged clutch condition and will
result in loss of power and eventually damage to the clutch driving disc.

It is good practice to depress the clutch pedal to the floorboard each time the
engine is started, as this releases the engine drive from the transmission and permits
the battery to crank the engine more rapidly and facilitate starting, particularly in
cold weather.

Brake Pedal

The brakes are operated on all four wheels by hydraulic pressure exerted by foot
pressure applied to the brake pedal located to the right of the steering gear column.

An exclusive safety feature in the braking system of your Hudson Terraplane car
provides for mechanical operation of the rear brakes automatically in event of
derangement of the hydraulic system. By this means the brakes are automatically
applied by additional travel of the foot pedal.

Parking Brake

The hand or parking brake system utilizes the rear wheel brake shoes operated
by means of heavy non-stretching steel cables through an equalizer.

Hand brakes are applied by pulling upward on the lever grip located under the
instrument panel to the left of the steering gear column.

The brakes may be released by turning the handle slightly to the right and
allowing it to return automatically to released position. See Brake Control Layout,

Accelerator Pedal

The foot accelerator, which controls the engine speed, is of the rubber covered
treadle type, conveniently located to the right of the brake pedal. The accelerator
pedal should never be "pumped," as this will cause excessive raw gasoline to be
injected into the engine through the carburetor accelerating pump feature and prevent
proper starting.

Transmission Control

The transmission operation conforms to the standard shift. The clutch must be
disengaged (either by depressing the clutch pedal or by removing the foot from the
accelerator pedal on cars fitted with Automatic Clutch Control) before shifting gears.

trol, which is a factory option, is a means

of simplifying the method of shifting

gears. An abutment indicator feature is

incorporated whereby the driver's attention

is called to the fact that a gear abutment has

taken place in shifting into low or reverse

The operation of the Electric Hand is

controlled by a small lever attached to a

low the steering wheel. The gear is selected

merely by moving the small lever (A),

Figure 34, with a finger of the right hand.

Then, by depressing the clutch pedal fully

to the floorboard, the actual shifting of

The method of selecting gears, that is, the positions to which the selector lever is

moved, is in the same rotation as that used in the conventional manual shift. The

neutral position of the selector lever is to the extreme right in line with the central

A small "off and on" switch (B) is provided on the selector switch to prevent

tampering with the shifting mechanism, and is also used to make the "Electric Hand"

Now with the engine running and the clutch disengaged (if automatic clutch control

is being used, it is not necessary to hold the clutch disengaged with the foot after the

engine is started; simply take the foot off the accelerator pedal), move the selector

lever to the low or reverse gear position, whichever is desired, and the shift should be

If for any reason the low and reverse gears should fail to mesh properly as the

desired position is selected from neutral, a tension is automatically applied to the

selector lever which is evident to the driver if the finger is resting on the lever; or, in

the event that the finger is removed after the selector lever is placed in position, it will

The action just described is termed as "tooth abutment indication" and, in order

to complete the shift, it is necessary to raise the foot slightly from the clutch

O W N E R' S M A N U A L 37

ELECTRIC HAND

The Electric Hand Transmission Con-

gear from neutral.

mounting on the steering column, just be-

gears is accomplished.

opening of the "H" plate.

inoperative when the car is being serviced.
We suggest the following procedure in operating the "Electric Hand" equipped car:
(a) Be certain the "off and on" switch is in "on" position.
(b) Depress clutch pedal fully to the floorboard.
(c) Turn ignition switch "on."
(d) Press starter button.

accomplished immediately. Allow the clutch to engage while depressing the acceler­ator pedal and the car will move normally in the gear selected.

automatically return to neutral.

pedal (or, if the car is equipped with Automatic Clutch Control, depress accelerator

provides a Selective Automatic Shift by means of which the clutch is operated and

pedal which remains in the engaged position when the Automatic Clutch Control is

38 H U D S O N T E R R A P L A N E

lightly) to obtain proper gear mesh. Then repeat the gear selection procedure.

When it is desired to make another shift, simply depress the clutch pedal, move

the lever into the gear position desired, and allow the clutch to re-engage.

It should be remembered that, when changing from one gear to another, it is
always necessary to depress the clutch pedal fully to the floorboard when the actual
shift of gears is desired (not necessary to depress clutch pedal, but merely raise the
foot from the accelerator pedal when Automatic Clutch Control is used).

The need of a gear shift lever is eliminated on cars equipped with "Electric Hand";
however, a lever is provided in a pocket mounted on the inside of the right-hand front
door hinge pillar should it be necessary to shift the gears when the engine is not
running. Inasmuch as the operating force of the "Electric Hand" is vacuum, and this
is not available unless the engine is running, it is impossible to shift gears unless the
hand gear shifting lever which is provided is used. This lever may be used by
removing the cap in the floor mat, which exposes the top of the transmission control.
Any desired shift can be made with this lever by simply depressing the clutch pedal
to disengage the clutch. The "off and on" switch on the selector mounting should be
turned "off" while shifting lever is in place.

Selective Automatic Shift

When the Automatic Clutch Control is combined with the Electric Hand it

gears are shifted without physical effort other than that required to flick the finger tip
control lever into the desired gear position.

Hudson Hydraulic Hill-Hold

When the car is equipped with Hydraulic Hill-Hold, in addition to the Automatic
Clutch Control, the clutch pedal must be depressed manually in order for the
Hydraulic Hill-Hold to function with the car at rest on a grade. This is necessary in
view of the fact that the Hydraulic Hill-Hold is actuated by movement of the clutch

in operation.

STARTING THE ENGINE

Series 81 (Manual Choke)

Pull the choke out, turn the ignition switch on, and push starter button. Return the
choke control gradually as the engine warms up. Do not keep the choke out any
farther than necessary for smooth running of the engine.

Should a flooded condition of the carburetor develop through operation of the
accelerator pedal or excessive use of the choke, push the choke control in and depress
the accelerator pedal fully for further cranking of the engine.

Series 82 (Automatic Choke)

The carburetor is equipped with an automatic choke control which provides the
correct mixture of gasoline and air for starting without resort to manual choking.

S

The use of proper grades of lubricants, particularly in cold weather, is helpful in

1. Depress accelerator pedal slowly one-quarter to one-half way and release. This

places the high idle stop in position to prevent stalling during the starting and

2. Depress clutch pedal fully to floorboard to disengage the clutch to permit the

If the engine does not start after 15 or 20 seconds of cranking, release the starter

Never pump the accelerator pedal before or after starting operations, as this will

result in flooding the engine with raw gasoline. Should this condition he experienced,

the engine can be cleared of the raw gasoline by cranking the engine with the

Failure of the engine to start when the above procedure is followed can usually be

traced to improper engine tune-up or, in cold weather, a combination of this and

improper lubricants. The car should then be thoroughly checked by your Hudson

Carbon monoxide, a poisonous gas, is ever present in the exhaust of an internal

combustion engine. Avoid starting or running the engine in a closed garage—always

The Hudson Terraplane Deluxe "L" head-type engine, developing 96 horsepower

with standard cylinder head, and 102 horsepower with super power dome head, and

the Super "L" type engine, developing 101 horsepower with standard cylinder head,

and 107 horsepower with super power dome head, have been designed to provide the

demands of the most critical car buyer from the standpoint of unusual power,

These features are obtained through the use of a chromium alloy cylinder block

giving great strength and wear-resisting qualities, and the use of silicon aluminum

alloy cam ground pistons fitted to .002" clearance. Silchrome steel valves, seating in

efficiently cooled valve seats machined in the cylinder block, provide freedom from

The use of single down-draft carburetor on Series 81, and down-draft duplex

carburetor on Series 82, with patented radial flow intake manifold, provides unusual

O W N E R' S M A N U A L 39

starting operations.
Start engine as follows:

warm-up period.

battery to crank engine at greater speed.

3. Insert key in ignition lock and turn to right.

4. Press starter button.

button and after a few seconds repeat the starting operation.

accelerator depressed fully to the floorboard.

dealer for the source of the difficulty.

Carbon Monoxide Gas

have the doors wide open.

ENGINE

efficiency and economy.

frequent valve grinding and loss of power.

economy and performance on hills as well as the straightaway.

Hudson Duo-flo Automatic Lubricating System, insuring proper lubrication from

the first turn of the engine, combined with a fully compensated crankshaft, provides

The engine mounting is of three-point type with rubber grommets at both front

pensation, together with five main bearings and a torsional dampener mounted on the

front, insures free running of the crankshaft under all operating conditions. The main

ance and provided with shims for adjustment. The working member of the dampener

The connecting rods are steel forgings with a heavy lower section to provide rigid

support for bearings, which are of spun virgin babbitt fitted with a clearance of .001".

The close fitting, hardened steel connecting rod bolts are securely locked in place

through the use of special "Palnut" locking nuts, having spring tension against the

The positive spring tension, applied to the regular hex nut in place of the former

practice of using cotter keys, positively assures the connecting rod bolt nut from

The upper end of the connecting rod is fitted with a bronze bushing to which the

piston pin is fitted with .0003" clearance.

The pistons are of silicon aluminum alloy of new design. This alloy is hard, lighter

than aluminum, and dissipates heat rapidly. The piston is "T" slotted to compensate

for expansion; cam ground to give full bearing on the cylinder wall; and is fitted with

two compression rings and one oil control ring above the piston pin and one oil

control ring below. With this arrangement all of the rings are located somewhat lower

down on the piston, with the result that cooler operating conditions and better oil

control are obtained. The piston is attached to the connecting rod by a full floating pin

which is honed to give a perfect bearing in the diamond-bored piston bosses. The

piston pin is a snug fit in the piston bosses when the piston is heated to 200° F.

This piston design permits fitting to the cylinder with a clearance of .002". The

pistons are removable either from the top or bottom of the cylinder bore.

The tappets are of the roller cam type which closely follow the cam, thus providing

for quiet, long-lived operation. The tappets are adjustable to provide proper clearance

Valve springs are of high-grade steel and are encased in steel cups to maintain

40 H U D S O N T E R R A P L A N E

unusually long life and smoothness of operation.

corners and a live rubber block at the rear end.

Crankshaft, Connecting Rods and Pistons

The crankshaft is a heavy forging with integral compensating weights. Full com-

bearings are removable bronze-backed, virgin babbitt, and are fitted to .001" clear-

is rubber, fully enclosed, requiring no adjustment.

regular hex connecting rod bolt nut.

loosening.

Camshaft, Tappets and Valves

The camshaft is Electric Furnace alloy with hardened bearing and cam surfaces.

for the silchrome steel valves.

alignment and prevent spring flutter at high speed.

O W N E R' S M A N U A L 41

Lubrication System

The Hudson Duo-flo Automatic Lubrication System gives positive flow of oil
to every working part of the engine from the moment of starting throughout the
period of operation. It also, through in-built features, conditions the oil so that
all oil supplied by the oscillating plunger pump is cooled and freed of solid matter
and diluents.

There are only two moving parts in the entire system—the oscillating plunger
and the drive shaft of the pump, which is driven by gears directly from the
camshaft. There are no small drilled passages to clog or restrict free flow of oil when
cold. The oil pipes (3 in number) are all located outside the engine and can
readily be removed should there be any necessity to do so.

Crankcase Ventilation and Oil Conditioning

Proper crankcase ventilation is essential to provide for removal of diluents, con­sisting mainly of unburnt gasoline and condensation, which have harmful effects
on engine oil. Two large crankcase ventilators are provided on the right side of
the engine for this purpose. The temperature in the crankcase is near the boiling
point of these diluents and, with the agitation of the moving parts of the engine,
they are readily vaporized and removed by the slight suction maintained on the
ventilators.

The flow of oil after returning to the crankcase is controlled so that it circulates
around passages adjacent to the cool outside walls of the reservoir and is cooled
before passing through the filter, which removes all solid matter before the oil is
recirculated by the pump.

The filter surfaces are so placed that they are flushed each time the crankcase
is drained and, therefore, require no special cleaning nor do they have to be
replaced.

Valve Tappet Adjustment

To assure proper valve clearance under all operating conditions, it is essential
that tappets be adjusted while the engine is at normal operating temperature.

To check or adjust tappets, remove the engine side plates (right side of engine
below intake manifold) and insert a .006" feeler gauge between the top of the
tappet screw and bottom of valve stem of intake valves while engine is running.
Intake valves are numbers 2-4-5-8-9-11, counting from the front of the engine.
An .008" feeler gauge should be inserted between the top of the tappet screw and
bottom of valve stem of exhaust valves while engine is running. Exhaust valves are
numbers 1-3-6-7-10-12, counting from front of engine.

Proper clearance is obtained by turning the tappet adjusting screw to the right
or clockwise direction to increase clearance, and to the left or counter-clockwise
direction to decrease clearance. The tappet adjusting screw lock nut should be
securely tightened after adjustment.

Proper engine performance and valve life depend on adjustments being made

Valve tappet adjustment can be facilitated by removing the right front wheel and

The valve timing is determined by the meshing of the crankshaft and camshaft

gears. The tooth of the crankshaft gear with the punch-mark on the front face should

The distributor, Figure 35, mounted on

the right side of the engine, is of the full

gle six-lobe cam and single breaker arm. A

graduated advance plate (E), Figure 35, is

provided to permit manual adjustment of

tane rating of fuels to prevent detonation.

The breaker points should be adjusted to

a .020" maximum opening. The points

should be clean and set squarely on each

other. Should the points become pitted, it

is necessary to remove them and grind

smooth or replace with new ones. The

grinding should be done in a special machine to insure proper seating. This operation

Filing or honing of the points will remove oxidization from the points but, due to

the hardness of the tungsten alloy used, this method is not practical for removing deep

pits.

Crank engine by hand until the fibre block (A), Figure 35, of the breaker arm is on

the highest point of the cam. The gap between the breaker points should be exactly

If adjustment of the gap is required, loosen lock nut (B) and turn adjusting screw

42 H U D S O N T E R R A P L A N E

Figure 35

accurately and according to specifications.

fender dust shield.

Valve Timing

mesh between the two punch-marked teeth of the camshaft gear.

Distributor

automatic advance type, employing a sin-

distributor to provide for variation in oc-

(See "Fuel Compensation," page 44.)

Breaker Points

can be performed by an Authorized Hudson Service Station.

Breaker Point Adjustment

.020", measured with a feeler gauge.

(C) until the proper gap is obtained. Tighten lock nut (B) and recheck the gap.

The ignition timing is determined by the position of the piston when the

distributor breaker points begin to open. In general, the points should begin

to open when the piston reaches its highest position in the cylinder. This

position of the piston is referred to as upper dead center and is indicated by U.

D. C. Marks are placed on the flywheel

to indicate when this position of the

Since the piston in a four-stroke cycle

engine may be completing the exhaust

stroke, or completing the compression

stroke and ready for the power stroke

when it reaches U. D. C., it is necessary

to determine the stroke as well as the

To determine this, remove the spark plug

Loosen distributor clamp screw (D), Figure 35, and turn the distributor

housing clockwise to the limit of the slot in the clamping plate (E). Remove

/8" from

the intake manifold. With the ignition turned on and the U. D. C. 1-6 mark

on the flywheel in line with the pointer on the inspection hole, Figure 36,

turn the distributor body counter-clockwise slowly just until a spark jumps from

the high tension wire to the intake manifold. Tighten clamp screw (D),

When the distributor cap is put in place, the metal strip on the rotor arm should

he directly under the terminal to which number one spark plug wire is attached.

The other cables should be in the cap terminals in the order 5-3-6-2-4, following

in a clockwise direction. The cable in the center terminal of the distributor cap

O W N E R' S M A N U A L 43

Ignition Timing

piston has been reached.

piston position.

from number one (front) cylinder.
Place the finger over the spark plug
hole and crank the engine slowly, using
the hand crank. Air pressure against
the finger indicates that the piston is
coming up on the compression stroke.

Figure 36

After this is felt, continue cranking
the engine slowly until the mark "U.

D. C. 1 and 6" is directly in line with
the pointer on timing inspection hole in the rear support plate of the motor, as
indicated at (A), Figure 36. The piston is then at U. D. C. and ready to move
downward on the power stroke.

Setting Ignition Timing

the central cable from the distributor cap and place the bare end about

1

Figure 35, replace central cable in distributor cap, and clamp cap on distrib­utor.

should go to the central (high tension) terminal of the ignition coil.

44 H U D S O N T E R R A P L A N E

The foregoing operations give dead center timing. This, however, due to variations

in fuel characteristics (octane rating), is only approximately correct. To get the

correct setting the car should be driven until the engine has reached its normal

operating temperature. Allow the car to slow down to 7 miles per hour in high gear

on a level, hard-surfaced road, then depress the accelerator rapidly to its limit of

travel. As the car accelerates from 10 to 15 miles per hour, a slight spark knock

should develop. If a knock is not heard, loosen distributor clamp screw

(D),

Figure

35, and turn the distributor counter-clockwise one graduation of the clamping plate

(E), and repeat the acceleration test. Repeat this operation until the knock is heard.

The higher the octane rating of the gasoline being used, the greater the advance

required to get maximum performance and fuel economy. However, the timing

The starting motor, Figure

37, located at the left rear corner of

the engine, is operated by a solenoid

switch (A) mounted on the top of the

starting motor. Control of the starter is

through a remote control switch located on

The drive to the engine is through the

Bendix drive located at the rear of the

gagement by the rotation of the starting

It

is necessary to turn on the ignition

switch to engage the starter, and, in

addition, on cars equipped with Electric Hand it is necessary to depress the clutch pedal.

The starter may be engaged manually by unscrewing the cap (B) on the

The generator, Figure 38, mounted at the left front corner of the engine, is of the

fully ventilated type which permits high output. It will be noted from the illustration

that the cool air is drawn through the generator from the rear end by means of a

The maximum generator output is reached at approximately thirty-five miles per

The maximum output on Series 81 models equipped with radio and all

Series 82 models is controlled by the third brush and an external Voltage Regulator,

which is mounted on the left side of the dash, under the hood. The maximum

Fuel Compensation

should not be set more than 3/4" ahead of the upper dead center mark on the flywheel.

Starting Motor

the instrument panel, Figure 32.

starter which is brought into en-

motor.

solenoid switch and depressing the plunger.

Generator

suction fan located at the front of the generator.

hour, and virtually constant high output is maintained at high car speeds.

generator charging rate with hot generator, that is, after the engine has been

run for 15 to 20 minutes indoors, should be 29 amperes, while the minimum should

not be lower than 26 amperes. This high charging rate can be used safely, as the

Voltage Regulator automatically reduces the charging rate when battery is fully

charged. When the battery voltage is low, the maximum possible generator output

is available to charge the battery. As the battery voltage increases, the charging

current gradually tapers off and only a small amount flows when the battery is

fully charged. In this manner it is possible to recharge the battery to its charged

state in the shortest possible time without the dangers of overheating which would be

present without a controlled high output generator.

The maximum output on Series 81 models not equipped with radio is controlled

by the third brush. On these models the maximum charging rate with hot generator,

that is, after the engine has been run for 15 or 20 minutes indoors, should be 18

amperes, while the minimum should not be lower than 16 amperes. Higher charging

The generator is driven by the "V" type belt, which also drives the fan and

water pump. This belt must be kept sufficiently tight to prevent slippage on the

pulleys. When properly adjusted, it should be possible to depress the belt 3/

4

", as

illustrated in Figure 38, at a point midway between the fan pulley and generator

pulley. This adjustment provides sufficient tightness to prevent slippage without

To tighten belt tension, loosen nut (A) and swing generator away from the

engine until correct position is obtained. Tighten nut (A), also the two lower

O W N E R' S M A N U A L 45

rates should be avoided to prevent damage to the electrical system.

Fan Belt

causing undue wear of the fan and generator bearings.

mounting cap screw nuts (B).

46 H U D S O N T E R R A P L A N E

The carburetor on De luxe models is

ploying a vacuum-controlled metering

pin feature which provides high

The position of the metering pin, being

controlled by engine vacuum, provides a

rich mixture at cranking speed when

sity of excessive choking. This feature

likewise prevents the use of more than

the required amount of fuel when the

operator presses the accelerator to open

The manifold heat control valve (A),

Figure 39, is adjustable for winter and

summer driving. The winter setting is

haust manifold above the valve. For

summer driving, except in areas where extreme heat conditions are experienced,

the pointer on the valve should be directed straight upward. For extremely hot

The control valve is adjusted by loosening nuts (B) sufficiently to relieve

pressure of bar (C). Be sure to tighten nuts securely after valve is moved to prevent

The carburetor, Figure 40, on your Hudson Terraplane Super car is of the

down-draft Duplex type, incorporating Climatic Control (self-controlled choke),

Two metering pins are provided, each of which proportions the fuel mixture

for its respective carburetor barrel. One barrel supplies the four center cylinders

and the other barrel supplies the two cylinders at each end of the motor. By this

feature improved fuel distribution is obtained, resulting in increased efficiency.

ator is depressed before starting the engine, swings into place and holds the

throttle open the correct amount for starting. As soon as the accelerator is again

depressed after starting the engine, this cam is pulled out of place and the throttle

drops down to the "fast idle" position, which gives enough motor speed to

prevent stalling during the warm-up period.

CARBURETOR AND FUEL SYSTEM

Carburetor—De luxe Models

of the single manual choke type, em-

efficiency and economy of operation.

vacuum is low, obviating the neces-

the throttle.

Manifold Heat Control

indicated by the letter "W" on the ex-

areas the pointer should be set to letter "S" or to the front of the engine.

exhaust leaks developing.

Carburetor—Super Models

accelerating pump and automatic heat control.

Carburetor Choke

The automatic choke mechanism provides a cam (D), which, when the acceler-

O W N E R' S M A N U A L 47

The automatic choke valve is operated by a thermostatic coil spring contained

in an insulated housing (A), Figure 40,
which is controlled by hot air drawn
off the exhaust manifold through stove
(B) and tube (C) which lead to the
insulated housing.

The automatic choke feature pro­vides accurate positioning of the choke
valve for all starting and operating con­ditions. At 75° Fahrenheit the thermo­static spring will just close the choke
valve. At lower temperatures the addi­tional tension necessary for cold start­ing is automatically provided. As the
engine warms up, the heat drawn into
the insulated housing (A) gradually
releases the spring tension on the choke
valve, providing automatically the
proper valve position for the warm-up
period.

Manifold Heat Control

The heat control valve is controlled
by a thermostatic spring and is auto-

matic in operation, supplying the correct amount of heat to the intake manifold
under all operating conditions.

CARBURETOR AIR CLEANERS

Standard Type

To provide for long engine life and prevent dust and abrasives from entering

the carburetor and engine, an air cleaner has been provided on the carburetor.

The standard type contains a fine copper wool filter unit which is saturated
with engine oil to which the particles of dust and foreign matter adhere as the
air is drawn into the air cleaner through the opening to the rear of the unit.

Oil Bath Type

(Optional equipment or accessory)

A new type carburetor air cleaner termed the Oil Bath type has been developed
for cars operated continuously on gravel or dirt roads or in districts where dust
storms are prevalent. This air cleaner is available as optional equipment or
accessory.

The air cleaning process of this type air cleaner is somewhat different from
the conventional air cleaner.

48 H U D S O N T E R R A P L A N E

As the air enters the cleaner body through the opening at the top, it is directed to

the oil located in the reservoir at the bottom of the cleaner body. The air velocity

and agitation of the oil due to movement of the car tends to keep the filter unit

As the surplus oil drains from the filter unit, it tends to carry with it the particles

of dirt clinging to the filter unit, which accumulate at the bottom of the reservoir,

This type of air cleaner is highly

son dealer. See page 19 for Cleaning and

Delivery of gasoline to the carburetor is

by means of a diaphragm type fuel pump,

Figure 41, operated from an eccentric on

A filter screen and sediment bowl

(A) are provided to prevent foreign matter in the gasoline from reaching the

carburetor. This bowl and screen should be removed and cleaned every 2,000 miles or

To remove the bowl and screen, loosen nut (B) and swing strap (C) to one side.

Before replacing parts, carefully examine the screen and bowl gasket and replace if

The combination fuel and vacuum pump, Figure 42, which is available as

optional equipment or an accessory, incorporates a vacuum pump (D) to provide

greater vacuum to improve operation of

the windshield wipers on acceleration, and

particularly in negotiating upgrades when

The operation of the combination pump

wise apply to the combination fuel and

bathed in oil at all times.

thereby permitting only clean air to enter the carburetor.

efficient and can be obtained from your Hud-

Oiling Instructions.

Fuel Pump (Standard)

the camshaft.

Figure 41

oftener if the accumulation in the bowl necessitates it.

damaged.

Combination Fuel and Vacuum Pump

(Optional or accessory)

engine vacuum is generally low.

is similar to that of the standard fuel pump.

The same cleaning instructions ap-

plying to the standard fuel pump like-

Figure 42

vacuum pump.

The gasoline tank is located at the rear of the car and has a capacity of 16½ gallons

A filter screen is provided at the bottom of the tank, surrounding the outlet pipe,

An electric gauge located at the front of the tank indicates the fuel level on the

A drain plug is provided at the rear left corner of the gasoline tank to permit

draining the tank periodically to remove condensation and foreign particles that

Do not attempt to adjust the carburetor alone. Perform all the following operations

Clean distributor breaker points and adjust to .020" maximum opening, as

Check battery and ignition wiring, being sure wires are pressed down in their

On Series 81, turn carburetor idling screw (D), Figure 39, into its seat and

On Series 82, turn the two idling screws (E), Figure 40, into their seats and

2.

When engine has reached normal operating temperature, adjust intake valve

2.

On Series 81, set carburetor throttle stop screw (E), Figure 39 (on Series 82 (F),

Figure 40), so that engine idles at a speed equal to a car speed of seven miles

On Series 81, adjust carburetor idling screw (D), Figure 39, for smooth

idling. The final adjustment should be from one-quarter to one turn of the

On Series 82, adjust carburetor idling screws (E), Figure 40, for smooth

idling. The final adjustment should be from one-quarter to three-quarters

Road test for final ignition timing as described under "Fuel Compensation,"

provide proper cooling under all operating

conditions. It is of the pressure pump circulation type. Super models are provided

with a thermostat and by-pass for temperature control. This provides positive

O W N E R' S M A N U A L 49

GASOLINE TANK

(13¼ Imperial gallons, or 62½ liters).
to prevent foreign particles from reaching the fuel system.
gasoline level gauge located on the instrument panel.

may accumulate in the tank.

ENGINE TUNING

in the order given:

1. Clean spark plugs and adjust gaps to .032".

1.

described under "Breaker Points" (page 42).

1.

sockets and insulation is in good condition and battery terminals clean.

1. Set ignition timing as described on page 43.

1.

back out exactly one turn.

back out exactly three-quarters of a turn.

2. Start engine.

tappet clearance to .006" and exhaust valve tappet clearance to .008".

per hour in high gear.

3.

screw from its full in position.

turn out from its full in position.

4.

page 44.

If the above operations, properly performed, do not give normal engine per-

formance, the car should be taken to your Hudson dealer for mechanical inspection.

COOLING SYSTEM

Operation

The cooling system has been designed to

circulation, combined with a short warm-up period.

50 H U D S O N T E R R A P L A N E

When the water in the cooling system is cold, the thermostat located in the

cylinder head outlet causes the water to flow through the by-pass directly to the

pump inlet and back through the cylinder block. Therefore, during the warm-up

period, water does not circulate through the radiator.

However, as the water temperature increases and has reached 150° Fahrenheit,

stat is fully opened at 185° and the circulation is then through the radiator.

A special thermostat is available and may be installed in the water outlet

The water pump is of the vane type, located on the front of the cylinder block

An improved type packing gland of the permanent type is incorporated in the

pump and requires no adjustment.

It is essential that the fan belt be adjusted only to the specified tension as

To drain the cooling system completely, open the draincock at the bottom of

the radiator (left side under hood), and also remove the pipe plug from the

To maintain proper cooling efficiency, it is essential that the radiator be kept

clean of scale and corrosion, due to electrolytic action of water-containing

Unless special steps are taken to prevent these deposits, the cooling system

should be cleaned twice a year. This cleaning is most effective when the reverse

flushing method is used to remove deposits after they have been loosened by the

use of Hudson Radiator Cleaner. Reverse flushing requires the use of special

equipment operated by compressed air, and you should have this done by your

To clean the radiator, run the engine a few minutes to circulate the water and

stir up loose sediment. Stop the engine and drain all water from the system.

Dissolve the contents of a container of Hudson Radiator Cleaner in a bucket

of hot water (be sure the material is completely dissolved). Pour the solution

Install filler cap tightly, cover the radiator and run engine for about twenty

It is important that all traces of the cleaning solution be removed, as they will

the thermostat begins to open and gradually blocks oft the by-pass. The thermo-

of De luxe models should temperature control be desired.

Water Pump

and driven by the "V" belt, which also drives the generator.

outlined under "Generator" on page 45.

Draining the Cooling System

cylinder block (left side to rear of side cover plate).

Care of the Cooling System

minerals and also deposits of minerals when the water is heated.

Hudson dealer.

into the radiator, then fill the radiator almost full of water.
minutes, but avoid boiling. Stop the engine and completely drain the system.

Reverse flushing will remove all the sediment the solution has loosened.
have a detrimental effect if left in the system.

The clutch, Figure 43, is of the oil cushioned type with large, single cork insert plate, and is

driven by friction from the rear face of the steel flywheel and the forward face of the drop-forged

Large coil engaging springs, some with inner springs (except Super Models), exert pressure

between the steel clutch cover and pressure plate to provide adequate frictional pressure for

driving purposes. These springs exert sufficient pressure to prevent slippage under all driving

The large cork insert drive plate is fitted with a number of torsional coil springs to prevent

Due to the film of lubricant on the frictional surfaces, burning is prevented and wear is

negligible. A bath of Hudsonite Clutch Compound provides constant lubrication for the fric-

tional surfaces, so that after thousands of miles of driving there will be no material change in the

O W N E R' S M A N U A L 51

After thoroughly flushing the cooling system, the addition of Hudson Rust and
Corrosion Inhibitor to the water will neutralize the action of any cleaning
compound which may not have drained out. It will also prevent corrosion
of the cast iron and other metals in the cooling system.

Hudson Radiator Cleaner and Inhibitor can be obtained from any Authorized
Hudson dealer.

ANTI-FREEZE

Before putting any anti-freeze in the cooling system, it should be thoroughly
cleaned and all hose connections and gaskets checked for leaks.

The types of anti-freeze recommended are: Alcohol, Glycerine, and solutions of
Ethylene Glycol marketed under various trade names.

Solutions containing calcium salts or other ingredients which promote
electrolytic action should be avoided. They will cause serious corrosion of
the solder joints of the radiator. Also avoid the use of solutions containing
glucose or honey, as they will tend to clog the system; and of kerosene or
fuel oil which, when hot, liberate inflammable vapors.

The following table gives the quantities of the recommended solutions
required for protection against freezing at various temperatures :

Temperature

Fahreheit

Alcohol

U. S. Quarts

Radiator Glycerine

(G.P.A. or Equivalent)

U. S. Quarts

Ethylene Glycol

(Prestone

or Equivalent)

U. S. Quarts

+20°
+10°

—10
—20

—30

0

°

2½ (2 I.Q.— 9½ L)
3¾ (3 I.Q.—14 L)
5 (4 I.Q.—19 L)
5¾ (4¾ I.Q.—21¾ L)
6½ (5½ I.Q.—24½ L)
8 (6¾ I.Q.—30¼ L)

5¾ (4¾ I.Q.—21¾ L)
7¼ (6 I.Q.—27½ L)
9 (7½ I.Q.—34 L)
10½ ( 8¾ I.Q.—39¾ L)
12 (10 I.Q.—45½ L)
13 (10¾ I.Q.—49¼ L)

2½ (2 I.Q.— 9½ L)
3½ (3 I.Q.-13¼ L)
4½ (3¾ I.Q.-17 L)
5 (4 I.Q.-19 L)
5¾ (4¾ I.Q.-21¾ L)
6½ (5½ I.Q.-24½ L)

CLUTCH

steel pressure plate.

conditions.

vibration at any speed. A large, heavy-duty throwout bearing is also provided.

engaging characteristics. The clutch fluid is triple sealed against leakage.

52 H U D S O N T E R R A P L A N E

Figure 43

The clutch is self-adjusting and requires no

attention other than lubrication, as outlined on

page 21, and occasionally checking the clutch

pedal to floorboard clearance to prevent the

It is essential that one and one-half

inches clearance be maintained between

the pedal shank and floorboard when the

To adjust for proper clearance, loosen lock

nut (A), Figure 45, remove clevis pin (C) and

turn yoke (B) to shorten or lengthen the rod, as

Replace clevis pin (C) and cotter pin.

A quick synchronizing transmission, Figure

46, incorporating helical gears to give a silent

second gear and involute spline mainshaft and

countershaft to provide easy shifting, is used in

denum alloy steel, carefully heat-treated for

strength and case-hardened to resist wear and

essary, contributing greatly to ease and

The mainshaft drive gear is supported by two annular ball bearings, as is the rear end of the

mainshaft. The front of the mainshaft is mounted in needle roller bearings instead of in a bronze

bushing, which is conventional practice. Steel ball bearings at this point absorb the mainshaft

O W N E R' S M A N U A L 53

CLUTCH CONTROL

clutch pedal from "riding" the floorboard.
Figure 44

Clutch Pedal Adjustment

clutch is engaged, as shown in Figure 44.

Figure 44

necessary.

Tighten lock nut (A) securely.

TRANSMISSION

the 1938 Hudson Terraplane.
All gears are made of nickel chrome molyb-

provide long life. Through the use of this spe­cial alloy steel the use of heavy parts is unnec-

rapidity of shifting.

thrust load.

The countershaft is carried in generous sized steel backed babbitt bearings.

54 H U D S O N T E R R A P L A N E

Figure 45

The steering gear, Figure 47, is of the hour-glass worm and roller tooth type,

with a maximum ratio of 18.2 to 1 in the straight ahead position to provide

The worm is cut in a manner which gives a minimum clearance with the

roller tooth in the straight ahead position and increased clearance on turns. This

gives maximum control and assures freedom from binding even after extensive

use which, on conventional gears, makes it impossible to get proper clearance

without binding on extreme turns due to maximum wear coming in the straight

It is important that the drag link be removed from the steering gear ball arm

in order to effect satisfactory inspection or adjustments and alignment of

Loosen the three gear housing bolt nuts (A) (one not shown), Figure 48, just

enough to allow gear to shift in frame to line up at angle determined by height

setting of instrument panel gear bracket and retighten gear housing bolt nuts

O W N E R' S M A N U A L 55

ease of handling.

ahead position.

gear in car.

Figure 47

Gear Alignment

56 H U D S O N T E R R A P L A N E

Now loosen instrument panel gear bracket and allow it to shift to match gear

The main or worm shaft is carried on two taper roller bearings which are

maintained in proper adjustment by a shim pack (B) which is properly selected when

Worm bearing adjustment should be

correct before other adjustments are

made. To adjust, loosen four worm cover

screws (A) (two not shown), Figure 47,

Vs". Use a knife to separate the top

shim (B), passing blade all the way around

between shims, care being taken not to

mutilate the remaining shims. Remove

tions to remove end play. Care should be

Now revolve hand wheel to determine

if any stiffness exists. If so, too many

shims have been removed or gear is

The mesh between the worm and roller tooth is adjusted by a screw (C), Figure

47, extending through right side of the gear housing. A flat washer (D), assembled

to the inner end of screw (C), fits into a slot in the roller tooth shaft to control the

movement of the roller tooth. A lock plate (E) is used to secure the adjustment and

this, in turn, is held in place by a cap (F) which screws onto the adjusting screw (C),

To adjust for closer mesh of the roller tooth and worm, remove cap (F), Figure 47,

slide off lock plate (E) far enough to clear lock boss on roller shaft cover (G). Place

steering wheel in mid-position or straight ahead driving position. The adjusting screw

(C) is then tightened into the housing, then backed off just enough to prevent

binding. Check the amount of play at the end of the ball arm. It is advisable to leave

The lock plate (E) is set in position against the roller shaft cover (G) and locked

column position and retighten. This will correct any misalignment of gear column.

Worm Shaft and Worm

the gear is built. See Figure 47.

Adjustment—Worm Bearings

only one shim at a time between inspec-

taken not to set up stiffness in worm bear­ings.

Figure 48

misaligned in car.

Cross Shaft and Roller Tooth

.

Adjustment—Cross Shaft and Roller Tooth

a slight amount of play at this point rather than to tighten too much.

in position. Replace adjusting screw cap (F) and tighten in place.

O W N E R' S M A N U A L 57

To raise or lower steering wheel to suit the requirements of the driver, loosen three

gear housing bolt nuts (A) (one not shown), Figure 48, as well as steering column

bracket nuts under the instrument panel. Set wheel in desired position, insert or

remove shims and tighten column bracket nuts. Turn steering wheel to right and left

After this operation has been completed, the drag link should be readjusted to obtain

proper steering gear high point setting.

When the steering gear is adjusted to the high point, the flat spot on the serrated end

of the main column tube should be pointing straight down. The position of the flat

spot may be determined by removing the horn button and observing the groove

Long, semi-elliptic type springs, controlled through the use of four direct-acting,

self-compensating shock absorbers, assure easy riding qualities under all driving

The spring leaves are lubricated with a viscous chassis lubricant and are protected

Spring shackles and pivot bolts are provided with lubrication fittings which should

be lubricated every

1,000

miles. See Lubrication Chart attached to front cover for

Front and rear spring "U" bolt nuts should be checked periodically and tightened, if

necessary, to maintain proper alignment of springs in relation to their position on the

The two front shock absorbers are mounted at the top on two large taper rubber

The stud at the lower end of the shock absorber passes through an

in the front

axle center. The shock absorber is mounted at this location on two large rubber

The rear shock absorbers are attached at the top to a bracket riveted to

the

rear axle

cross member by means of a bolt which passes through two large taper rubber

grommets. The lower ends of the shock absorbers are mounted on drop- forged studs,

Wheel Position

to align gear on frame and tighten frame bracket nuts.

machined in the top of the column tube, directly in line with the flat spot.

SPRINGS AND SHOCK ABSORBERS

conditions.

Springs

against road dirt and water by spring covers.

fitting positions.

axles.

Shock Absorbers

grommets, assembled over a stud projecting from the front fender support bracket.

eye

cushions.

supported by the rear spring clips, and are mounted on two large taper rubber grom­mets.

58 H U D S O N T E R R A P L A N E

The use of rubber grommets and cushions at the upper and lower ends of the

shock absorbers serves to eliminate a metal-to-metal contact, and also to cushion

The large reservoir of fluid, the low operating pressure and the double seal

tained at the proper le

vel to obtain satisfactory control, and it is, therefore,

recommended that this be checked by an Authorized Hudson dealer at least twice

The drag link is of the adjustable type, with shim packs located at the front and

the rear of the pitman arm ball. This type

essary to bend the pitman arm in order to

obtain proper relationship of the front

wheel position to the steering gear high

Assuming that the front wheels point to

the right instead of to the straight ahead

position when steering gear is in center

position, it will be necessary to remove shims from the rear pack (A), Figure 49, and

add to the front pack (B). In the event that the front wheels point to the left, reverse

the operation, that is, remove shims from the front pack

(B)

and add to the rear pack

To assist in overcoming a tendency for the car to lean to one side in driving

around curves and in passing other cars on the highway, a stabilizer is attached to

The stabilizer bar (A) is attached to the frame by large rubber grommets

(B)

which

act as bearings and are supported by brackets (C and D). The ball ends of the

ings assembled in connecting links (E)

which are supported at the bottom by

mounting brackets (F) with a ball end

tached to the front axle bearing caps by

tion other than occasionally checking the

or absorb road shocks.

practically eliminate the loss of fluid. The fluid, however, should be main-

a year or every 5,000 miles.

DRAG LINK

of drag link arrangement makes it unnec-

point.

Figure 49

(A). Reconnect the drag link to the pitman arm and lubricate thoroughly.

FRONT STABILIZER

the front end of the frame side rails. See Figure 50.

stabilizer bar are imbedded in rubber bush-

which is also assembled between two rub­ber bushings at the bottom of the link.

The lower mounting brackets are at-

spring clips (G).

These parts require no lubrication or atten-

upper and lower support brackets for tight-

Figure 50

ness.

O W N E R' S M A N U A L 59

60 H U D S O N T E R R A P L A N E

The front axle design used on the Hudson Terraplane car is of the Radial

Safety Control type, whereby the axle is attached to the chassis frame by two

large drop-forged steel torque arms (A), Figure 51, which insure accurate

positioning of the axle and relieve the front springs of all loads other than that of

The front ends of the two torque arms are attached rigidly to the front axle

by means of two large bolts which pass through the ends of the torque arms and

axle center. The rear ends of the torque arms are attached to the chassis frame

with large pivot bolts which pass through rubber grommets to absorb road shock.

The axle center is of the Elliott type, made of a heavy drop-forging of high

quality carbon steel. The steering spindles, which are drop-forged molybdenum

alloy steel, are attached to the axle center with alloy steel pivot pins mounted in

hardened steel bushings with ball bearings to carry the thrust on the end of the

The spindle pivot pins are drilled centrally, full length and are equipped

with a single 90° metered pressure type reservoir grease fitting located above

The reservoir fittings are of special design and provide sufficient lubricant

under pressure for 1,000 miles of driving. Pivot pin bushings are sealed to retain

lubricant and exclude dirt and water. Two pressure relief valves are fitted in

The tie rod ends are of the plain

bearing type, fully sealed against dirt

and water, and are provided with

The front springs are mounted on

ing on the axle center. Self-adjusting

shackles (C) attach both ends of the

mit unrestricted spring action for a

moving the hub cap, withdraw cotter key

holding nut (A), Figure 52. Turn nut to the

right until a slight drag is felt when turning

the wheel slightly by hand. Then loosen

the nut just sufficiently to permit the

FRONT AXLE AND SPRING SUSPENSION

supporting the weight of the car.

pins.

each pivot pin.

the expansion plugs below the pivot pins to prevent leakage around the expan­sion plugs.

Each wheel is mounted on two taper roller bearings.

lubrication fittings.

bearings (B) which permit free turn-

springs to the chassis frame and per-

smooth ride over all types of roads.

Front Wheel Bearing

Adjustment

After jacking up the front axle and re-

wheel to turn freely. Insert cotter key.Figure 52

O W N E R' S M A N U A L 61

The front wheels should be adjusted with

zero to 1/8" toe-in measured 10" from the

ing the clamp bolts on the tie rod ends and

turning the tie rod in a clockwise direction, as

viewed from the right, to increase toe-in, and

A special tool is required to make this

measurement accurately. This adjustment is

cessive tire wear. Have your Authorized

The caster (backward tilt of the axle) should

be from 1° to 2° and should be equal within

Note: Whenever caster setting is changed it is necessary to readjust the steering gear to the

Should any front axle parts become bent, through accident, to such extent that they cannot

be straightened without heating, they should be replaced with new ones. Heating will destroy

The rear axle, Figure 54, is of the semi-floating type carried in a one-piece, welded,

banjo-type housing. This gives a rugged assembly, with all parts readily accessible, as the

axle shafts and wheel bearings can be removed without disturbing the differential assembly;

also the differential and gear set assembly can be removed as a unit, after the axle shafts have

been removed, by simply disconnecting the rear universal joint flange and removing the eight

Front Wheel Alignment

ground. This adjustment is made by loosen-

in the reverse direction to reduce toe-in.

important for correct steering to prevent ex­Hudson dealer check this alignment fre-

quently.

Caster

Figure 52

1/2° at both front wheels.

To increase caster proceed as follows:

1. Loosen upper bolt (A), Figure 53.

2. Remove lower bolt nut and lock washer (B) and withdraw bolt.

3. Install shim at location (C). (Shims are .020" thick and equal to 1/2°.)
To decrease caster proceed as follows:

1. Loosen upper bolt (A).

2. Remove bolt nut and lock washer (B), and withdraw bolt.

3. Remove shim at location (C).

high point setting. See page 58.

Camber

The camber (outward tilt of front wheels) should be from 1° to 1½°.

the original heat treatment of the parts and may result in sagging or even breakage.

REAR AXLE

carrier bolt nuts.

62 H U D S O N T E R R A P L A N E

Figure 54

O W N E R' S M A N U A L 63

The helical bevel drive gear and pinion are made of nickel molybdenum Electric

Furnace steel, heat-treated for strength and case-hardened to resist wear. The

drive pinion, differential and axle shafts are carried by six heavy-duty, taper roller

ing a large passage to carry oil thrown from the ring gear to a point in the housing

between the front and rear pinion bearings. This oil flows through the bearings and

returns to the axle housing. Oil leakage at the front of the pinion is guarded :against by

the use of a hydraulic leather oil seal. Similar seals are located in the wheel bearing

ings, jack up rear axle and remove both

rear wheels and hubs. Remove the four

nuts from bearing cap (A), Figure 55, and

push the bolts out of the backing plate to

permit removal of the bearing cap without

disturbing the hand brake operating link.

under the cap, the

end play of the axle shaft is decreased.

Total play between axle shafts should be

from .005" to .010", which is perceptible

by pulling shaft in and out with the hand.

It is necessary that the thickness of shims

at each rear wheel be approximately the

same, so, when adjusting, remove a thin

shim from each side and repeat, Figure 55

if necessary, until only a slight amount of

plementary actuation of the rear brake shoes from both the foot pedal and hand brake

A master cylinder, Figure 57, incorporating compensating features, is mounted on

the pedal mounting bracket and is accessible by lifting the left side of the hood. The

master cylinder has an integral reservoir from which additional fluid is supplied to the

It is essential that the reservoir be kept at least half full at all times to prevent the

possibility of air entering the system. Genuine Hudson Hydraulic Brake

bearings.

Exceptional lubrication has been provided to the drive pinion bearings by arrang-

caps.

Rear Wheel Bearing Adjustment

To adjust rear wheel bear-

By removing shims (B)

Figure 52

play is evident. Be sure the axle shafts turn freely before building up.

CA

UTION

Under no condition should a knock-out type puller be used to remove a

wheel hub or the end of the axle shaft struck a heavy blow.

BRAKES

The brakes on the Hudson Terraplane car are hydraulically operated, with sup-

control. See Figure 56.

system as necessary.

64 H U D S O N T E R R A P L A N E

O W N E R' S M A N U A L 65

Fluid should be used at all times to insure against the use of brake fluid containing

mineral oil or other fluids detrimental to the rubber parts which are apt to swell and

Dirt is injurious to the system and extreme care should be taken to wipe off cap (2),

As pressure is exerted on the master cylinder piston (6), Figure 57, through the brake

pedal, the force built up in the hydraulic brake tubes tends to force outward wheel

To insure full return of the master

cylinder piston (6), Figure 57, when the

brake is released, there must be 1/4"

ing lock nut (9), removing clevis pin (11)

crease length until clevis pin (11) just

enters the rod with the pedal shank (8)

1/4" from the toeboard and the bell crank

against its stop. Reinsert clevis pin (11)

in bottom of ball crank, insert cotter key and tighten lock nut (9). This adjustment is

important, as failure of the piston to return to the end of the cylinder will cause the

An occasional filling of the master cylinder reservoir should be the only attention

required to the hydraulic system unless the reservoir is permitted to run dry, a main

line is disconnected or a wheel cylinder is

disconnected for service operations. If the

nected, it is necessary to bleed the air out

of the lines at all wheel cylinders. If a

1. Remove screw (D), Figure 59, and screw

the end of the bleeder tube (A), Figure 58, in

its place and allow end of tube to hang in a jar

2. Unscrew bleeder valve (E), Figure 59,

3. Depress foot pedal by hand, allowing

pedal to return to released position slowly.

become inoperative.

Figure 57, before removing the cap for inspection and filling.

piston cups and pistons, expanding the brake shoes at the top.

Brake Pedal Adjustment

clearance between pedal shank (8), Fig­ure 57, and the floorboard.
This clearance is obtained by loosen-

and turning connecting link (10) to in-

Figure 57

brakes to drag.

Figure 57

cylinder runs dry or a main pipe is discon-

wheel cylinder is disconnected, it is neces­sary to bleed only at that particular cylin­der.

Bleeding the System

partially filled with liquid.

three-quarters of a turn.

Continue this operation until air bubbles

66 H U D S O N T E R R A P L A N E

cease to be emitted from the bleeder tube.

4. Close bleeder valve (E), remove

CAUTION: Do not use a substitute for

Genuine Hudson Hydraulic Brake Fluid.

Do not use fluid that has been drained

out of the system. Always replace with

Use Genuine Hudson Hydraulic Brake

tered. Hudson Fluid Number 1 is

recommended for use at extremely low

It is essential that the following adjustment be made accurately to obtain proper

With equalizer bar cable plate against stop, loosen brake pedal push rod lock nut

(13), Figure 56, and turn adjusting nut (14) until rear face is 1 7/16" from front end

There are only two points of adjustment in the braking system to compensate for

brake lining wear. The eccentric adjustment (B), Figure 55, centralizes the brake

shoes in the drum. The adjusting screw, accessible by removing cover (C), takes up

(3) After removing adjusting hole cover (C), Figure 59, and gauge hole covers in

brake drums, AT EACH WHEEL, loosen eccentric lock nut (A), and insert .010"

feeler gauge between the lining of secondary (eccentrically controlled) shoe and

tion until .010" feeler is just snug at anchor and adjusting ends of secondary shoe.

The clearance at both ends of secondary shoe should not vary more than .003".

Should the variation be greater than this it will be necessary to relocate the

anchor pin. This work should be done by an Authorized Hudson Service

bleeder hose, and replace screw (D), Fig­ure 59.

5. Refill master cylinder reservoir.

Substitutes are not suitable for this sys­tem.

new fluid.

Fluid Number 5, except where continu-

ous sub-zero temperatures are encoun-

Figure 59

temperatures.

Adjustment of Pedal Push Rod

mechanical follow-up to the hydraulic operation of the rear brakes:

of push rod (5). Tighten lock nut (13) securely.

Brake Shoe Adjustment

the clearances between the lining surfaces and the brake drums.

Adjustment for Wear Only

(1) Jack up all wheels clear of the floor.
(2) Disconnect rear wheel cables from equalizer bar cable plate.

brake drum. Turn the eccentric adjustment in the direction of forward wheel revolu-

Tighten eccentric lock nut.

O W N E R' S M A N U A L 67

Station. (In case of clearance variation it is desirable that clearance at the anchor end

(4) Spread the brake shoes by means of a screwdriver inserted through the hole (C)

engaging the notched adjusting screw until the shoes are expanded against the brake

(5) Pull hand brake lever until equalizer bar cable plate is 1/8" from stop. (Figure

(6) Pull rear brake cables tight and adjust ends so clevis pins just enter holes in cross

shaft levers or equalizer bar (12), Figure 56. The rear face of the equalizer plate must

(8) Release adjusting screw at each wheel until the brakes are just free of drag and

(9) Lower car and test for balance on a level road—avoid testing on side of crowned

In the event the above instructions do not provide satisfactory braking, consult

The headlamps are designed to give maximum safe illumination under all driving

conditions. The lamps are fitted with 1½ candlepower bulbs for the parking position,

and prefocused bulbs, having a flanged mounting to insure correct installation,

power filament for country driving. When the main lighting switch is in the driving

(right) position, the light beams can be changed to the high or' country driving

position or downward and to the right for city driving position by depressing and

Two adjusting screws have been provided at the bottom of the headlamp, Figure

Place the car on a level floor or driveway

squarely in front of a white wall or screen at

zontal line (AA), Figure 61, on a wall six

feet long and at a height of thirty-five and

one-quarter inches above the floor (E). This

line represents the top of the beam. Next

six and thirteen thirty-seconds inches apart.

Measure one-half the distance between (C

and D) and draw line (B) ten inches long.

These vertical lines represent the distance

be less than at the adjusting end.)

drum so drum can just be turned by hand.

56.)

be parallel to the face of the stop after this adjustment is made.
(7) Release hand brake.

replace feeler gauge hole covers and wheels.

road.

further with your Hudson dealer.

HEADLAMPS

employing a 32-candlepower filament, for city driving and passing, and a 32-candle-

releasing the light control foot switch.

Figure 60

between lamp centers.

Adjustment

60, to obtain proper lighting effect.

a distance of twenty-five feet. Draw a hori-

draw two vertical lines (C and D) twenty-

68 H U D S O N T E R R A P L A N E

Without passengers in the car, cover one headlamp to obscure its beam and place

Turn both adjusting screws (A and B), Figure 60, with a narrow screwdriver the

same number of turns clockwise to raise the beam, counter-clockwise to lower the

To move the beam toward right: Turn the right adjusting screw (B), Figure

60, counter-clockwise until beam has moved approximately half the desired distance

to the right. Turn left adjusting screw (A) clockwise until beam has reached the

proper position on the horizontal axis. It may then be necessary to readjust the beam

on the vertical axis by turning both adjusting screws the same amount clockwise to

To move the beam toward left: Turn the right adjusting screw (B) clockwise and

To replace headlamp lens and bulb,

loosen screw (C), Figure 60, at bottom

of lamp body. Push bottom of lens backward and downward until the top of the lens

clockwise. Replace bulb, turning same in clockwise rotation to lock in reflector.

To replace headlamp parking bulb,

remove lens as outlined above. Press

parking bulb inward and turn to release it from socket. Replace with new bulb.

Do not touch the reflector, as any marks will reduce the illumination. Should

it be necessary to clean the reflector, use ordinary lampblack on a soft cloth and wipe

If the reflectors require frequent cleaning, it is an indication that the gaskets are

Figure 61

lighting switch in the high or country driving position.

To Adjust the Beam Vertically:

beam.

To Adjust the Beam Horizontally:

raise the beam, counter-clockwise to lower the beam.

the left adjusting screw (A) counter-clockwise, proceeding as outlined above.

LAMP LENS AND BULB REPLACEMENTS

is clear of the top of the lamp body and lift out. Remove bulb by turning counter-

Replace lens.

gently in a circular motion.

not giving a proper seal and should be replaced.

O W N E R' S M A N U A L 69

clockwise and remove. Remove bulb and replace. Replace lamp body and lens

To replace tail lamp bulb,

remove lamp body retaining strip and remove body.

Replace bulb, place body in position and reinstall retaining strip, securing same

To replace dome lamp bulb,

grasp lens and retainer assembly and unsnap from

To replace fender lamp bulb,

remove screw on top of lamp body and lift off body.

The teleflash oil pressure indicator, teleflash generator charging indicator and

instrument lamp bulbs

are held in sockets assembled in the rear face of the instrument

cluster base by spring tension behind the instrument panel. To replace bulb, pull

socket out of cluster base and remove bulb. Replace bulb and press socket into socket

Hudson-built bodies are of all-steel construction with side panels welded and

riveted to the floor section. The body is attached to the chassis frame at thirty-eight

points to insure rigidity. Through Hudson unit-construction principle of building the

body and chassis as a unit, your car is assured of freedom from squeaks and rattles

Hudson bodies are carefully insulated with soundproofing materials to dampen out

Large, wide doors of heavy box-construction afford ample room to enter and leave

the car. Strong, oversize hinges are used to hold the doors in perfect alignment and

prevent rattles and sagging.

room is provided in the rear compartment for several large and small pieces

In the Coupe models, luggage and sample cases can be easily placed into or

removed from the rear deck compartment due to the extra large deck lid which reaches

Your car is equipped with Year 'Round Ventilation System which includes the

ally. The front section or ventilating wing is of the friction type and is operated by

To replace rear license lamp bulb, turn the lamp body and lens assembly counter-

assembly and turn in clockwise rotation to lock in place.

between lamp body and base.

base. Replace bulb and snap lens and retainer assembly in place.

Replace bulb, replace body and reinstall body screw.

hole.

BODIES

throughout its life.

all possibility of drumming.

Heavy gauge steel is used in all pillars, side panels, door and all-steel top construc-

tion to insure Hudson Terraplane owners of the utmost in safety.

Doors

Windows are large and afford clear vision from all angles.

Luggage Space

Ample

of luggage.

down to the compartment floor.

Ventilation

Automatic Draft Eliminator and fully sealed doors.
The front door windows are divided into two sections which are controlled individu-

handle (A), Figure 62. This handle also acts as a locking device when the wing is

70 H U D S O N T E R R A P L A N E

closed. To open the wing, press button

(B)

on the locking handle and turn the

handle in clockwise rotation. The handle will lock automatically when returned to

ing the regulator handles in clockwise

side by turning the handles to the right

as illustrated in Figure 62. Turning the

handles in the opposite direction opens the

The rear door and quarter windows on

dows on Brougham models are controlled

by regulators, the handles of which are

dan models slide backward and forward.

By moving the glass backward to give an

opening of approximately 1/2", a vacuum is created which draws air out of the body,

Inasmuch as the Automatic Draft Eliminator, which is located under the rear seat

cushion in Sedan and Brougham models, and just behind the rear seat in the rear

compartment of Coupe models, is made of cloth and acts as a screen to prevent dirt

and dust from entering the body, it should be inspected periodically and cleaned

when necessary. To clean, it is not necessary to remove the bag from the car, but

merely raise it with the fingers and tap the accumulation loose and permit it to

The cowl ventilator will permit the entrance of large quantities of air into the car.

Its operation and extent of opening are controlled by a lever, the knob of which is

Floor mats and carpets are all secured under the scuff plates so that dirt can

readily be swept off. The front mats can be withdrawn; however, it is necessary

All door and rear quarter upholstered panels are held in place with clips

The inside door handle and window regulator handles on door panels and

window regulator handle on rear quarter panels must also be removed to complete

pins.

its normal position.

Door windows can he lowered by turn-

rotation. See Figure 62.

The doors may be locked from the in-

door.

the Sedan models and rear quarter win-

located directly below the windows.

The rear quarter windows on the Se-

Figure 62

while further opening permits air to enter.

drop to the road surface.

located directly under the center of the instrument panel.

to loosen the scuff plate screws to remove the carpets.

Upholstered Trim Panels

attached to the doors and pillar posts with screws.

removal of the panel.

To remove handles, gently depress handle finish plates and remove retaining

O W N E R' S M A N U A L 71

passenger. Cushions arc deep, have an unusually comfortable coil spring

pulling the seat forward by gripping the instrument panel. By moving the

Inasmuch as the two seat adjustments mentioned above operate independently

of each other, it is possible to move the seat forward by lifting the locking

handle (A), Figure 30, at the left front corner and also move the seat on

Seats

Seat cushions and cushion backs in Hudson-built bodies have been

designed to afford the maximum of driving comfort to both driver and

arrangement and padding effect to hold the cushion form in pleasing
appearance after long service.

The front scats in all models are adjustable to suit the individual
driver's needs and comfort. While on long drives it is often desirable to move
the seat location slightly to change the body position for a short time to
relieve driving strains. This arrangement is also designed to accommodate the
driver's leg length.

The Brougham and Convertible Brougham front seat cushions are the
same full-length type used in Sedan models; however, the cushion back is built
in two sections, each section of which may be tilted forward indepen­dently of the other. The entire scat is pivoted at the left front corner and
can be moved on an arc, forward and to the left side to provide ample
room for entrance and exit to and from the rear compartment.

In the 4-Passenger Coupe model, in which a scat has been provided directly
behind the driver's position for the extra passenger, the front seat is also of
the full-length Sedan type with the cushion hack built in two sections,
each section of which may he tilted forward independently, and is pivoted
at the left front corner to afford ample room for entrance and exit to and
from the rear compartment.

In the 3-Passenger Coupe and Convertible Coupe. the seat is of the full
bench type and adjustable forward and backward.

Seat Adjustments—Forward and Backward

In all models the entire front seat may be moved forward or backward
by means of an adjustment operated with a rubber tipped lever (A), Figure
30, located near the bottom on the left side of the seat frame. To adjust the
seat merely raise the lever by the pressure of a linger of the left hand, as
illustrated, and release it as the desired position is obtained.

Seat Adjustment on Arc

The front seats in the Brougham, Convertible Brougham and 4-Passen­ger Coupe models can be moved on an arc by merely tilting the passen­ger section of the seat back slightly forward to unlock the mechanism and

seat back to its normal position the seat is again locked.

an arc at the same time.

72 H U D S O N T E R R A P L A N E

ure 63, is adjustable to center the

To adjust, loosen male dovetail

screws (B) and move up or down

as necessary so that dovetail lifts the

door 1/16" as it enters the female

member of the dovetail (E) set in the

lock pillar post as the door is

The front edge of the rear door

should he set slightly inside of the

rear edge of the front door to prevent

If adjustment is necessary, loosen the

ure 6.i, set in the lock pillar post and

sary to permit the door to close to

the proper position. Tighten screws

Door striker plates (D), Figure

63, arc adjustable to secure proper

in and out regulation of the door

Should it be necessary to close the door violently to latch it, or the latch does

not hold the door snugly against the bumpers and weatherseal, loosen the striker

plate screws in the pillar post, being careful not to remove them, as the tapping

plates inside the pillar post will fall out of position, and move the striker

plate in or out, as necessary, and tighten the screws securely.

Door Adjustments

Door dovetail (male) (A), Fig-

door properly at the top and bottom.

closed. Tighten screws securely.

wind noise at high speed.

bumper fastening screw (C), Fig-

move the bumper in or out as neces-

securely.

position.

All doors are provided with strong steel check rods, imbedded in rubber at

the ends, to control the swing of the doors.

O W N E R' S M A N U A L 73

With the exception of the Electric Hand and Selective Automatic Shift,

which are available only as factory-installed options, all of the following items

of equipment can be installed on any models. This equipment is expressly

designed for Hudson Terraplane cars and can be easily installed by an

The Electric Hand may be had on all models as a factory-installed

option. This device simplifies gear shifting by selecting the desired gear

with a small lever located immediately under the steering wheel. By this

means the conventional gear shift lever becomes unnecessary, providing

fold vacuum which is electrically controlled when the clutch is disengaged

.

When Electric Hand is combined with Automatic Clutch Control, it

produces a Selective Automatic Shift of an exceptionally appealing nature.

With this combination it is merely necessary to select the desired gear with

the linger tip lever mounted

on the steering column, and by releasing the

accelerator pedal the actual movement of gears is accomplished. With

Selective Automatic Shift gear changing is accomplished faster, with less

Automatic Clutch Control is available as an option or can be installed

signed so that Automatic Clutch Control can be installed without any

replacement of standard parts or any drilling. The automatic control is

designed especially for Hudson Terraplane cars and is of the latest design,

incorporating a solenoid valve to control vacuum, which is the operating

force, and a lockout device to prevent it from becoming operative in "high"

gear at speeds above 15 miles per hour. This, together with the naturally

smooth action of the Hudson Terraplane lubricated clutch and the controlled

throttle return, gives a smoothness of operation both on engagement and

Inasmuch as the lockout is effective only when the car is being operated

in "high" gear, it will in no manner affect the operation of the Automatic

This arrangement is a safety device which eliminates the coasting effect

at high speeds and makes Automatic Clutch Control safe to use on wet or

EQUIPMENT

Authorized Hudson dealer.

Electric Hand

more room in the driving compartment.

The actual changing of gears is accomplished by the engine intake mani-

Selective Automatic Shift

effort on the part of the driver and the elimination of clashing by synchro­nizing the actual movement of gears with the clutch fully disengaged.

Automatic Clutch Control

by your Authorized Hudson dealer. The clutch mechanism has been de-

disengagement that has never before been attained.

Clutch Control when changing through the gears to reach high gear.

slippery :streets and when the car is operated in mountainous country.

74 H U D S O N T E R R A P L A N E

panel and harmonizes beautifully with the other instruments. Unusual tone and

Hydraulic Hill-Hold

The Hydraulic Hill-Hold is a device mounted on the brake master cylinder, the
function of which is to hold the brakes in the applied position to prevent the car from
backing when stopped on a grade. Actuation of the Hill-Hold is accomplished by
holding the clutch pedal in a fully depressed position after the brakes have been
applied. The clutch pedal being connected to Hill-Hold serves to lock the brake fluid
in the brake tubes under pressure.

This action permits freedom of the right foot to operate the accelerator pedal
without speeding up the motor excessively when ready to drive ahead. By re-engag­ing the clutch pedal when starting, the action of the Hydraulic Hill-Hold is released.
Your Authorized Hudson dealer only should be permitted to make adjustments on
this unit.

HUDSON APPROVED ACCESSORIES

Your Hudson dealer oilers you a complete line of Hudson Approved Accessories
designed to harmonize with interior and exterior appointments of Hudson Terraplane
cars. They tend to enhance appearance, increase comfort and add to satisfaction of
ownership.

Each accessory has been chosen for its superiority over competitive items and
carries the approval of Hudson engineers.

Some of the items available are as follows:

Two HUDSON RADIOS are available, which utilize to the fullest extent the
many advances which have been made in radio engineering. They are real musical
instruments of exceptional tone quality, designed expressly for Hudson-built cars.

The CUSTOM RADIO has seven tubes, including two beam power output tubes.
The unit incorporates an Automatic Selectivity Control to produce exceptional
reception and tone qualities on both local and distant stations. This model has a
separate eight-inch speaker to reproduce faithfully the exceptional qualities of this
set. The dial mounted in the center of the instrument panel harmonizes beautifully
with the other instruments.

The DE LUXE. RADIO has six tubes, including one beam power output tube, and
a six-inch built-in speaker. The dial is also mounted in the center of the instrument

reception qualities are available in this set.

Either the under-running hoard or telescoping type antenna is available.

HUDSON HOT WATER HEATERS are available in three models. All models
are finished to harmonize with the interior body scheme. The motor switch is of the
three-speed type.

The STANDARD HEATER delivers an ample supply of healthful warmth for
normal winter weather.

The DE LUXE HEATER provides and delivers an adequate supply of heat for the
majority of cars. It is equipped with a deep core and has an exceptionally quick
heat-up period and delivers a steady stream of uniform heat. It is also

O W N E R' S M A N U A L 75

equipped with added features in heater design—provision for supplying warns
air to the windshield for defrosting and a side opening port for furnishing a flow
of warns air to the driver's feet as well as for floor warming. These features are
controlled by a knob on the left side of the heater.

The CUSTOM HEATER, with a large core and attractive fittings, is truly a
remarkable development in heater performance. It is also equipped with the de­frosting, driver's foot and floor warming features. An illuminated tenite knob
which harmonizes with the instrument control knobs is used to control the
motor speed.

HUDSON SEAT COVERS are most comfortable—they fit the seats snugly
and do not wrinkle up under the passengers. Their smooth, non-clinging surface
makes it easier to enter and leave the car. The basket weave construction of the
fabric matting permits circulation of air through the material, giving greater cool­ness during the hot weather. They are easily cleaned by sponging with soap and
water. They protect the entire seat and blend harmoniously with Hudson
Terraplane interiors.

Owners who live in areas where fog, heavy snows and rainstorms occur fre­quently will appreciate the installation of a HUDSON FOG LIGHT. The com­bination of the amber lens and low installed position prevents glare and reflection
into the driver's eyes. The low, broad amber beam projected by this light greatly

increases road visibility. The Fog Light is designed to harmonize with the car

headlamps and is finished in a durable chromium finish.

HUDSON FENDER LAMPS, beautifully designed in the streamline motif,
afford real protection while parking at night. These lights use a minimum of
battery power. They may he seen from the side as well as the front. These lamps
are available lacquered to match the fenders.

The COMBINATION FUEL PUMP AND VACUUM PUMP is particularly
adapted to mountainous territories where heavy rain or snow is experienced and
which taxes to the limit the operation of the windshield wipers. The combina­tion fuel pump and vacuum pump provides extra vacuum power for the wind­shield wipers, making it possible to operate very favorably under the most adverse
conditions. Its installation also eliminates the slight lag in windshield wiper
operation during acceleration.

An ELECTRIC CLOCK, with dial face similar in design and same size as
the speedometer, may he installed in the right-hand locker box door. The dial is
indirectly illuminated and harmonizes with the balance of the instruments. To
install, it is merely necessary to remove the door hole cover by removing the three
sheet metal screws in the locker box door.

A VISOR identical with the left-hand visor can be readily installed, as proper
mountings have been provided in the right side of the windshield header.

TWO TYPES OF INSTRUMENT PANEL CIGAR LIGHTERS are avail­able. One is the conventional type where it is necessary to hold the heat element
until it glows. The second is the new Automatic Cigar Lighter which eliminates
fumbling—pushing—dangerous one-hand driving and permits the motorists to
keep their eyes on the road. It clicks a warning when ready for use.

76 H U D S O N T E R R A P L A N E

plane cars.

prevent rattles.

parking. They save your fenders and, being of attractive design, add an extra

jackets.

prevent the interior from rusting. Clean the spark plugs and dip the ends into

place. It is best to take the battery to a battery service station, where it may

putting the car hack into service.

TWIN OUTSIDE AIR ELECTRIC HORNS of high quality tone, heavily

chromium plated, add to the pleasing front end appointments of Hudson Terra-

REAR WHEEL SHIELDS, finished in the same color as the rear fenders,
accentuate the sweeping lines of the rear fenders and contribute to the impression
of speed and grace.

A VANITY MIRROR mounted on the sun visor has a decided appeal to
feminine motorists. No need of moving the rear view mirror out of driving position
when this beauty aid is installed.

The stylish OVAL REAR VIEW MIRROR is not only attractive in design,
but its special shape enables the driver to command a full view of the road behind.

LICENSE PLATE FRAMES transform the ordinary appearing license plates
into a really attractive accessory. Protect the license plates from bending and

FENDER GUIDES are helpful in driving through narrow traffic lanes and in

touch of distinction.

The aforementioned items are only a partial list of Hudson-Approved Accesso­ries obtainable. Upholstery Cleaner, Car Polish and Wax are also available.

Make your accessory selection from an Authorized Hudson dealer, with full
assurance that such accessories will harmonize with the car design and provide,
to the fullest extent, the service for which they are intended.

YOUR HUDSON DEALER WILL GLADLY SHOW YOU THE FULL

LINE OF HUDSON-APPROVED ACCESSORIES

PREPARING CAR FOR STORAGE

If the car is to be laid up for any length of time, and especially in the winter,
the following suggestions should be observed: Drain the water from the cooling
system, then run the motor not over one minute to dry out the cylinder water

Drain the crankcase. Flush out the old oil, then refill with fresh oil. It is also
well to pour a little oil into each cylinder through the spark plug holes to

oil to prevent rusting, and replace them.

Crank the engine for about twenty seconds with the ignition switch off and
the throttle closed. This insures a distribution of the oil over cylinder walls and
valve mechanism.

Disconnect the wires from the storage battery and remove battery to some dry

receive a freshening charge at least once a month. It is well worth while to take
care of the battery.

Go over the chrome or nickel-plated parts with a light coating of vaseline jelly
or grease to prevent tarnishing. This should be removed with gasoline before

Jack up the car and remove the tires.

O W N E R' S M A N U A L 77

If the tires are to he out of service for any length of time, they should he
removed from the wheels. The inner tubes should be put in the casing with
a small amount of air pressure and the tires stored in some cool, dark place,
preferably where there is a slight amount of moisture, since, if they become
too dry, the rubber will harden and lose its elasticity. It is a good idea to wrap
tires with cloth to protect them from heat.

Remove all dust from upholstery, wash body clean, put the windows or the
top up and cover the car with heavy sheetings or a paper cover especially
made for the purpose.

When putting the engine back into service again, remove the spark plugs,
inject a small quantity of oil into each cylinder, crank the engine by hand for a
few seconds, replace the plugs, turn the ignition "on" and, after the engine has
been started on its own power, run slowly for a few minutes.

INDEX

Page

36

74

19-47

51

35

38

17-24-35-73

11-18-60-61

10-22-61

28

27

24-69

70

8

69

11-18-22-36-63

65-66

18-63

42 761

11

39

5-46

38 4 27

25

27

31

61

11

75

10-16-21-35-51-53

17-24-35-73

16-535-53

10-53

48-75

9-49-50

Page

41

40

14-42

72

18-58

50

31 2575

24-37-73

8-13-39

49 7345

75

75

11-18-60-61

12-56-57

58

61

20-60

44

34

48

9-46-49

35

34

31-44

36-38

9-15-44

33

4

67

67

74

74

38-74

Accelerator

A

Accessories
Air Cleaner
Anti-freeze
Ash Receiver
Automatic Choke
Automatic Clutch Control

Axle—Front
Axle—Rear

B
Battery—Care
Battery—Registration
Bodies
Body—Trim Panels
Body Types
Body—Ventilation
Brakes
Brake Adjustment
Brake Fluid
Breaker Points
Breaking-in Instructions

C
Camber
Capacities
Carbon Monoxide Gas
Carburetor
Carburetor Choke
Carburetor Governor
Care of Car Interior
Care of Finish
Care of Folding Tops
Car jack
Caster
Chassis Dimensions
Chassis Lubrication, Inside Front Cover
Cigar Lighter
Clutch
Clutch—Automatic Control

Clutch Control
Clutch Pedal Adjustment
Combination Fuel Pump and
Vacuum Pump
Cooling System

Crankcase Ventilation and Oil
Conditioning
Crankshaft, Connecting Rods and
Pistons

D
Distributor
Door Adjustment
Drag Link
Draining Cooling System
Driving Hints
Dust Storm Precautions

E
Electric Clock
Electric Hand
Engine
Engine Tuning
Equipment

F
Fan Belt
Fender Lamps
Fog Lights
Front Axle
Front Seat Adjustment
Front Stabilizer
Front Wheel Alignment
Front Wheel Bearing
Fuel Compensation
Fuel Gauge
Fuel Pump
Fuel System
Fuses

G
Gasoline Gauge
Gasoline Mileage
Gear Shift Lever
Generator
Generator Charging Signal
Governor—Carburetor

H
Headlamps
Headlamp Adjustment
Heaters
Hudson Approved Accessories
Hydraulic Hill-Hold

INDEX (Continued)

Page

9-34

43-44633

4 681089-343412-13

12-31-41

Inside Front Cover

16-17-21-24

16

14242415222114

23

22

20

69

46-47

14

31

34325

40

26-27

Page

49

74

10-22-61-63

71-75

32-71

38-73

21-57

17-23-57-60

9-14-34

9-14-34-44

38

9-14-34-44

11-23-32-55

55-56-57

76835

15

11-28-29

30

30-31

30

22-53

367017-23

40-41

42-43-44

69753-4

15-50

332861

20-60-63

74

Inside Front Cover

Ignition

I

Ignition Timing
Inspection Service
Instruments

K

Keys

L
Lamp Bulb and Lens Replacements
Lamp Bulb Specifications
License Data
Lighting System
Lights
Lubricants
Lubrication System
Lubrication—

Chassis
Clutch
Clutch Pedal
Distributor
Door
Electric Hand
Generator
Rear Axle
Shock Absorbers
Starter
Steering Gear
Transmission
Universal Joints
Wheel Bearings

Luggage Space

M

Manifold Heat Control

O
Oil Capacity
Oil Economy
Oil Pressure Signal
Operation

Owner's Service Policy

P
Pistons
Polishing

17-23

Radiator

R

Radio
Rear Axle

S
Seats
Seat Adjustment
Selective Automatic Shift
Shock Absorbers
Spring Suspension
Starter
Starting, Lighting and Ignition

Starting the Engine
Starting Motor
Steering Gear
Steering Gear Adjustment
Storage—Preparing for

T
Technical Information
Terminals
Throttle Linkage
Tires
Tire Inflation Pressures
Tire Removal—Spare
Tire Wear
Tools
Transmission
Transmission Control
Trim Panels

U
Universal Joints 17-23

V
Valve Tappet Adjustment
46-47 Valve Timing
Ventilation
Visor—Inside

W
Warranty
Water Pump
Water Temperature Gauge
Wheels
Wheel Alignment
Wheel Bearing Adjustment .
Windshield Defroster
Wiring Diagram .

29