Rockwell AXLES Operation And Service Manual

OPERATION

SERVICE MANUAL

FOR

AXLES

MADE

IN

USA

A leading manufacturer and distributor of trailer parts and accessories.

Rockwell American Products

Manufacturing & Home Offices

AXLE MFG PLANT

1012 Industrial Drive
Royse City, TX 75189

Phone: [phone] • Phone: [phone]

Fax: [phone]

[e-mail]

FENDER MFG PLANT

633 NW Parkway

Azle, TX 76020

Phone: [phone]

Fax: [phone]

[e-mail]

MFG PLANT

3804 Sydney Road

Plant City, FL 33567
Phone: [phone]
Phone: [phone]

Fax: [phone]

[e-mail]

SPRING MFG PLANT

306 West Simonds Road

Seagoville, TX 75159
Phone: [phone]
Phone: [phone]

Fax: [phone]

[e-mail]

CORPORATE HEADQUARTERS

604 West Main • Azle, TX 76020

Phone: [phone] • [phone]

Fax: [phone] • Fax: [phone]

[e-mail]

Birmingham, AL

Ph: [phone]

Phoenix, Arizona

Ph: [phone]

Fresno, California

Ph: [phone]

Sacramento, California

Ph: [phone]

Aurora, Colorado

Ph: [phone]

Plant City, FL

Ph: [phone]

Angola, IN

Ph: [phone]

Freeport, Minnesota

Ph: [phone]

Kansas City, Missouri

Ph: [phone]

Seminole, Oklahoma

Ph: [phone]

Wilsonville, Oregon

Ph: [phone]

New Holland, PA
Ph: [phone]

Rockwell American Branch Offices

Florence, SC

Phone: [phone]

Azle, Texas

Ph: [phone]

Mount Pleasant, Texas

Ph: [phone]

San Antonio, Texas

Ph: [phone]

Rockwell American Trailer Products

LIMITED WARRANTY

Rockwell American extends to the original purchaser only, a limited

warranty on each Rockwell American tubular axle(s) against de-

fects in material or workmanship for a period of two (2) years from

date of purchase.

Rockwell American extends to the original purchaser only, a limited

warranty on each Rockwell American Equalizer Torsion Axle(s)

against defects in material or workmanship for a periodof five (5)

years from date of purchase.

1. To obtain warranty service, please call or send the following

information to the address listed on the back.

A. Name and mailing address of purchaser.

B. Proof of date of purchase.

C. Name of manufacturer of unit under which axle is mounted.

D. Model, year and serial number of unit.

E. Name and address of dealer from whom unit was purchased.

2. This warranty does not extend to:

A. The connecting of brake wiring to the trailer wiring or trailer

wiring to the towing vehicle wiring.

B. The attachment of the axles to the frame.

C. Hub imbalance, or any damage caused thereby.

D. Parts not supplied by Rockwell American.

E. Any damage whatever if caused by or related to any

alteration of the axle.

F. Use of axle assembly on unit other that that to which it

was originally mounted.

G. Normal wear including brake linings and magnets.

3. This warranty does not cover defects caused by:

A. Improper installation.

B. Damage (not resulting from defect or malfunction) while in

the possession of the customer.

C. Unreasonable use (including failure to provide reasonable

and necessary maintenance.

4. Repair or replacement under this warranty is the exclusive remedy

for the customer. Rockwell American shall not be liable for any

incidental or consequential damages, including any towing fees,

hotel bills, telephone calls and meals for breach of any express or

implied warranty on the axles.

FOR ASSISTANCE, CONTACT OUR WARRANTY DEPARTMENT

ROCKWALL AMERICAN

1012 Industrial Drive

Royse City, TX 75189

[phone]

A leading manufacturer and distributor of trailer parts and accessories.

MADE

IN

USA

SOUTH CAROLINA

Hwy 76 (Palmetto Indust. Park)

Timmonsville, SC 29161

Phone: [phone]
Phone: [phone]

Fax: [phone]
Fax: [phone]

fl[e-mail]

TEXAS

604 W. Main Street

Azle, TX. 76020
Phone: [phone]
Phone: [phone]

Fax: [phone]
Fax: [phone]

[e-mail]

TEXAS

609 East 16th

Mt. Pleasant, TX 75455

Phone: [phone]
Phone: [phone]

Fax: [phone]

Fax [phone]

[e-mail]

TEXAS

5014 Callahan Rd.

San Antonio, TX 78228

Phone: [phone]
Phone: [phone]

Fax: [phone]
Fax: [phone]

[e-mail]

COLORADO

14600 E. 35th Place Unit F

Aurora, CO 80011
Phone: [phone]
Phone: [phone]

Fax: [phone]

[e-mail]

MINNESOTA

208 7th Street SW Box 235

Freeport MN 56331

Phone: [phone]

Phone [phone]

Fax [phone]

[e-mail]

OKLAHOMA

1801 Ray Davis Blvd.

Seminole, Oklahoma 74868

Phone: [phone]

FAX: [phone]

[e-mail]

PENNSYLVANIA

170 Commerce Dr

New Holland, PA 17557

Phone: [phone]
Phone: [phone]

Fax: [phone]

[e-mail]

CALIFORNIA

3701 Parkway Place

W. Sacramento, CA 95691

Phone: [phone]
Phone: [phone]

Fax: [phone]

[e-mail]

FLORIDA

3804 Sydney Rd.

Plant City, FL 33566
Phone: [phone]
Phone: [phone]

Fax: [phone]

[e-mail]

MISSOURI

519 Duck Road
Grandview, MO 64030
Phone: [phone]

Fax: [phone]

[e-mail]

INDIANA

1304 Wohlert Street

Angola, IN 46703
Phone [phone]
Phone [phone]

Fax [phone]

[e-mail]

ARIZONA

2930 W. Osborn Road

Phoenix, AZ 85017
Phone: [phone]
Phone: [phone]

Fax: [phone]

[e-mail]

CALIFORNIA

2888 South Orange Avenue

Fresno, CA 93725
Phone: [phone]
Phone: [phone]

Fax: [phone]

[e-mail]

ALABAMA

960 Old Grants Mill Rd

Irondale, AL 35210
Phone: [phone]
Phone: [phone]

Fax: [phone]

[e-mail]

OREGON

27180 S.W. 95th Ave. Suite 3320

Wilsonville, OR 97070
Phone: [phone]
Phone: [phone]

Fax: [phone]

[e-mail]

Warranty

Service

Provided

Through Our

Nationwide

Distribution

Locations

ROCKWELL AMERICAN
SELLING LOCATIONS

Contact Your Local Rockwell American Branch

For More Information

Or visit us online:

www.rockwellamerican.com

TABLE OF CONTENTS

Safety Notice . . . . . . . . . . . . . . . . . . . . . . 1

Brakes . . . . . . . . . . . . . . . . . . . . . . . . 1–2

Electric Brake Maintenance. . . . . . . . . . . . . . . 3

Trailer Connection . . . . . . . . . . . . . . . . . . . 4

Brake Trouble shooting . . . . . . . . . . . . . . . . 5-6

Electrical . . . . . . . . . . . . . . . . . . . . . . . 6–7

Hubs, Drums and Bearings . . . . . . . . . . . . . 8–9

Posi-Lube . . . . . . . . . . . . . . . . . . . . . . . 10

Suspension Systems . . . . . . . . . . . . . . . 11–12

Torsion Axles . . . . . . . . . . . . . . . . . . . . . 13

Tire and Wheel Safety . . . . . . . . . . . . . . 14–15

Replacement Parts . . . . . . . . . . . . . . . . . . 16

MADE

IN

USA

1

SAFETY NOTICE

Providing safe dependable operation of your axle(s) and related compo­nents is important. This manual provides basic procedures for service
and repair using established industry standards. There are many varia­tions in procedures to repair and maintain the axle and its related parts,
however, it is not possible to provide you with all the detail for various
service procedures. Refer to your trailer manufacturer’s owners manual
for any specific warnings and procedures that may relate to the safety
and maintenance of your trailer. If these procedures are not clear to you
or if you are unsure you should contact a trailer repair facility who has a
trained axle repair technician for advice or repair.

NEW AXLE SETUP AND ADJUSTMENTS

Wheels Re-torque wheel nut torque requirements on new
trailers at 50 miles. See page 16 for torque rates.

Brakes Adjust at 3,000 miles.

Tire Pressure See tire manufacturers recommendations.

Brake Controller Settings Refer to Brake Controller manufacturers
recommendations

BRAKES

Your trailer electric brakes are actuated by an electric magnet which is
modified by an electrical impulse from the brake controller. The trailer
brakes will apply smoothly and slightly ahead of the truck brakes if all the
brake components are installed and connected properly. The brakes are
activated with the electrical impulse from the controller to the magnets
which, when in contact with the armature plate

will apply the pressure to the primary shoe and will engage the secondary
shoe much like hydraulic brakes on a passenger vehicle. As brake pres­sure (applied by the driver) is increased the electrical flow to the magnets
increases the pressure between the brakes and drums to meet the braking
requirements of the driver.

Safety Notice

2

Electric brakes have been used on a variety of trailers for many years and
offer many benefits to the driver. Please refer to the brake controller infor­mation provided by the installer of your towing vehicle for procedure and
operation of the controller.

DOUBLE CHECK!

Make sure your controller is installed according to the manufac-•
turer’s recommendations.

Make sure that the proper brake controller adjustments have •
been made to correctly engage the tow vehicle brakes and the
trailer brakes to work together to providing safe and comfortable
braking.

Make sure that the brakes have been properly seated by applying •
the brakes repeatedly and lightly for about 20 to 25 times at a low
speed (under 25 miles per hour) to begin the “seating in” of the
brake to the brake drum components. Do this in a safe and low
traffic area for everyone’s safety.

Right Hand 10” Electric Brake Left Hand 12” Electric Brake

Brakes

Below is a view of the 10” and 12” brakes used on your trailers axle(s),
depending on your trailer and manufacturer’s specifications.

3

Electric Brake Maintenance

ELECTRIC BRAKE MAINTENANCE

Your trailer brakes should be adjusted between 250 to 300 miles after all
of the brake components have seated. Since driving conditions and areas
vary you should re-check brakes adjustments at a minimum of 3,000
miles.

ADJUSTMENT PROCEDURE

Make sure your trailer is on a level surface and is free of any 1.
potentially dangerous items.

Jack up the trailer and secure with jack stands. Make sure you are 2.
using the trailer manufacturer’s procedure for jacking and safely
supporting the trailer until the tire and wheel are clear of the
ground surface.

Find the adjusting hole cover and remove it from the backing 3.
plate.

Use a brake adjusting tool to adjust the star wheel (of the adjuster) 4.
and expand the brakes until the brake shoes are sufficiently
expanded so that the tire and wheel will not easily rotate.

Now move the star wheel in the opposite direction until you can 5.
feel a little resistance from the brake and replace the hole cover.

Carefully lower the tire to the ground.6.

Repeat this procedure for all wheels making sure to adjust all 7.
brakes at the same time.

CAUTION

Do not place jack on axle or springs.

Use jack stands to secure trailer.

4

brakes

breakaway

battery

breakaway

switch

connector

brake controller

tow vehicle

battery

Trailer Connection

5

Brake Troubleshooting

Check for defective controller.•
Check for corroded brake assembly.•
Check for weak or broken brake shoe return spring.•
Check for worn or damaged lever arm between •
magnet and brake shoe.
Check for improper controller installation.•

Check brake adjustment.•
Check for worn brake shoes.•
Check for contaminated brake linings.•
Check for weak or broken brake shoe return springs.•
Check for bent backing plate.•
Check wheel bearing adjustment.•
Check for worn or damaged wheel bearings.•
Check for worn or damaged magnets.•

Check for dead or weak 12-volt battery, on trailer.•
Check all wiring and connections.•
Check breakaway switch.•
If only one brake is operating, check other magnets.•

Check for defective circuit breaker.•
Check for open or shorted circuit.•
Check for properly wired system including a good •
ground between towing vehicle and trailer.
Check brake adjustment.•
Check for worn or defective magnet(s).•
Check for a damaged or worn connector between •
towing vehicle/trailer.
Check that controller is installed correctly and •
functioning correctly.

Check for out-of-round brake drums.•
Check for properly wired system, including a good •
ground between towing vehicle and trailer
Check for defective magnet or wiring.•
Check for loose/worn wheel bearings.•

TROUBLESHOOTING GUIDE FOR ELECTRIC BRAKES

Dragging Brakes

Noisy Brakes

Inoperative

Breakaway

System

No Brakes

Intermittent or

Surging Brakes

6

TROUBLESHOOTING GUIDE FOR ELECTRIC BRAKES

Ineffective or

Weak Brakes

Grabbing or

Locking Brakes

Ensure trailer is not overloaded.•
Check for loose or corroded connections.•
Check for properly wired system.•
Check for a shorted circuit.•
Check for worn or defective magnet.•
Check brake adjustment.•
Check for bent backing plate flange.•
Check for contaminated brake linings.•
Check brake system wiring.•
Check for worn, damaged brake linings.•
Check for weak or broken brake shoe return spring.•
Check for worn brake drums.•
Check that correct controller is installed.•
Check for improper controller installation.•

Check for contaminated brake linings.•
Check for weak or broken brake shoe return spring.•
Check for rust on armature plate or brake drum.•
Check for improper controller installation.•

Electrical

ELECTRICAL

VOLTAGE MEASUREMENT PROCEDURE

To measure voltage, connect the voltmeter to both magnet wire leads
while the towing vehicle is connected and the engine is running to insure
accurate readings. The voltage should begin at O as the controller is
increased slowly to approximately 12 volts. If the controller does not
produce this voltage control refer to your brake controller trouble shoot­ing and information manual. The lower reading will provide smoother
braking while the higher may produce sharp or severe braking.

AMPERAGE MEASUREMENT PROCEDURE

Amperage is the electrical current flowing in the brake system while the
magnets are energized. Make sure of your ammeter’s rating to prevent
damage to meter. An easy place to check the amperage is at the output
wire from the brake controller to the brakes. Disconnect this (blue) wire
and put the ammeter in series into this line. Please refer to the following
chart.

7

Electrical

Individual amperage draw can be measured at the magnet by inserting
the ammeter in the line of the magnet you wish to check. Disconnect one
of the wire leads from the wire magnet and attach the ammeter between
the two wires. Reconnect the wires when completed.

BRAKE SIZE AMPS TO MAGNET 2 BRAKES 4 BRAKES 6 BRAKES

7 x 1 -1/4 2.5 5.0 10.0 15.0

10 x 2 -1/4 3.0 6.0 12.0 18.0

12 x 2 3.0 6.0 12.0 18.0

12 x 3 -1/2 3.0 6.0 12.0 18.0

There are several possible reasons that may cause voltage variations.
Listed below are the most probable.

Poor electrical connections.•

Open circuits•

Broken wires or incorrect wire size.•

Brake controller malfunction.•

Electrical problems can also be caused by bare wires, •
defective con-trollers or shorts in the magnet coil.

Locating the source of a short circuit should be done by checking indi­vidual sections. Should you find the amperage reading drops to zero after
disconnecting the trailer, then the short is in the trailer. If the amperage is
highafter all of the magnets are disconnected, the short is somewhere in
the trailer wiring.

Please note that the majority of electrical brake complaints can be traced
to the controller. Refer to your brake controller manual to insure your con­troller is correctly adjusted and that the connections are in compliance
with the manufacturer’s specifications.

8

Hubs, Drums and Bearings

HUBS, DRUMS AND BEARINGS

Rockwell American bearing configuration uses industry standards for­bearing sets (bearings & cones) and hubs. This standard of using tapered
roller bearings helps to reduce the axial end play provided at assembly
and is essential to performance of the bearings life. The bearings are
packed with lithium base grease.

Your axles may be equipped with the Rockwell American Posi-lube
system which provides for lubricating the hubs at a special grease fit­ting. This option allows grease to flow through specially machined axle
spindles, which have been drilled to allow the grease to be passed from
the fitting tothe inner bearing and back out through the outer bearing.

BRAKE DRUM INSPECTION

The brake drum surface should be inspected for scoring or excessive
wear. If the wear is greater than .020” oversized it should be resurfaced. If
the drum has worn out of round by more than .015” it should be re-ma­chined.If wear or scoring is more than .090.” the hub and drum assembly
will have to be replaced.

The armature surface (which contacts the magnet) needs to be inspected
for uneven wear or scoring. Drums can be resurfaced removing no more
than .030” and should be to 120 micro inch finish. In the event you need
to turn the drums or resurface the armature it is recommended that you
replace the magnets at the same time.

Special notes

Make sure the inside of the hub cavity is carefully cleaned •
and free of any contamination following turning and before re­assembly.

9

Hubs, Drums and Bearings

HUB INSPECTION REMOVAL,
REPLACEMENT AND ADJUSTMENTS

A. Removal of Hub

1. Remove wheel

2. Remove grease cap

3. Remove cotter pin or bend tang washer on Posi-Lube

4. Unscrew the spindle nut counter clockwise

5. Remove spindle washer

6. Remove hub from spindle

B. Seal Inspection and Replacement

1. Seals should be replaced each time the hub is removed.

2. Pry the seal out of the hub with a screwdriver.

3. Tap new seal into place.

C. Bearing Maintenance, Adjustments, and Replacement

1. Inspect for corrosion and wear.

2. If any rust or wear exists on the bearing then remove and replace.

3. If bearings are found to be in good condition, then cleaning and
repacking the grease is all that is needed.
Note: Do not spin bearings with compressed air.

4. Hand pack each bearing individually using a premium lithium
base wheel bearing grease.

5. Reinstall the hub, reversing the procedure above using the bearing
adjustment procedures below.

6. If you have the Posi–Lube system refer to the “Posi-Lube
Lubrication Procedure”.

D. Bearing Adjustment

1. Feel and Drag Method

Tighten slotted nut until hub drags slightly when rotated. (Rotating
the hub while tightening the nut seats the bearing.) Loosen the
slotted nut 1/6 turn (1 hex) to align nut slot with the cotter pin
hole. Wheel should turn freely. Insert new cotter pin through nut
and spindle. If necessary loosen, never tighten, nut to align slot
with the hole in the spindle. Bend one leg of cotter pin over the
end of the spindle and the other leg over the nut. Tap legs slightly
to set. Cotter pin must be tight. If equipped with Posi-Lube, bend
tang back into position.

10

2. Torque Wrench Method

Make sure nut is loose. Tighten nut with torque wrench to an initial
torque of 50 ft. lbs. Loosen nut from initial torque and finger
tighten. Insert new cotter pin through nut and spindle. If equipped
with Posi-Lube, reset tang. If necessary loosen, never tighten, nut
to align slot with the hole in the spindle. Bend one leg of cotter
pin over the end of the spindle and the other leg over the nut. Tap
legs slightly to set. Cotter pin must be tight.

POSI-LUBE
LUBRICATION PROCEDURE

Posi-Lube Lubrication Procedure

Remove the rubber cap at end of the grease cap.1.

Using a standard grease gun place the tip onto the grease fitting at 2.
the end of the spindle.

Pump the grease into the fitting as you continue pressure you will 3.
notice the old grease coming out at the cap. When you begin to
see the new grease, remove the gun and clean off any excess and
replace the rubber cap.

Posi-Lube

11

Suspensions

ROCKWELL AMERICAN SUSPENSION SYSTEMS

Single Axle

Double Eye Spring

Tandem Axle

Double Eye Spring

Single Axle

Slipper Spring

Tandem Axle

Slipper Spring

We also provide your suspension systems as well as the axle assemblies.
These components are designed to perform a number of tasks to provide
your trailer with the best and smoothest towing possible. The above
drawings offer a view of single and tandem axle assemblies in both the
double eyed and slipper spring versions.

Your axle undercarriage may be equipped with double eye leaf springs or
slipper leaf springs depending on the manufacturer’s specification.

Double eye leaf springs have eyes at both ends of the spring and have
special bushings to protect them from wear. They do not need lubricating.

Slipper leaf springs have an eye at only one end which is also fitted with a
special bushing to protect them from wear. The trailing end of the spring
is designed to slide against the rear hangers.

Either of these suspensions will provide you with comfortable trouble
free towing, but as with any mechanical parts, they should be inspected
periodically depending on usage at recommended intervals of 6 months
or 5,000 miles whichever comes first.

Should you find excessive wear in the hanger components you should
have them replaced by a qualified technician. Should you find excess
wear, in any of the attaching parts bolts, nuts, bushings, broken or worn
out springs, you should replace them and torque attaching bolts to the
following standards as shown below.

12

Suspensions

SUSPENSION TORQUE REQUIREMENTS

To perform undercarriage modifications please carefully follow the rec­ommendations as follows:

Raise and support the trailer until it is clear of the ground.1.

When the trailer is securely supported place a block under the axle 2.
close to the end which will be repaired. You need to secure only the
axle tube in order to remove and replace the part you want to replace. If
your trailer has two axles you will need to support both axle tubes.

Disassemble the attaching parts (u-bolts, nuts, and the links).3.

Remove the eye bolts and the springs and place them clear of your 4.
working area.

If needed remove the spring bushings and replace with new ones.5.

Use the reverse order to reinstall your components. 6.

Special note: The fittings that attach the springs to the chassis mounts
are designed specially to be wear resistant and should not be lubri­cated.

CAUTION

Make sure the trailer is raised and

supported according to the manfacturers

requirements before beginning any repairs of the trailer.

USE CAUTION

If the above maintenance procedures are not applied, there

could be serious damage to the components possibly

resulting in physical injury and or damage to property.

U-Bolt Torque

3/8” 30-50 ft. lbs.

7/16” 45-70 ft. lbs.

1/2” 45-70 ft. lbs.

9/16” 60-85 ft. lbs.

Shackle Bolt Torque

7/16” 45-70 ft. lbs.

9/16” not torqued; snug fit to allow parts
to move easily. The lock nut is used
to position parts.

13

Torsion Axle

THE EQUALIZER TORSION AXLE

Your trailer may be equipped with our Equalizer axle(s). The Trailer
manufacturer specifies their use according to individual engineering
requirements.

Each spindle is attached to a trailing arm which rocks up and down
during road shock. This movement is transferred to a steel inner bar
within the axle beam. Rubber cords then absorb the shock from the
twisting inner bar.

THE BENEFITS

Superior Performance

The independent action provides greater control and stability which
makes towing the trailer much easier. Wheel vibration is absorbed
by the rubber cords.

Side mount hangers should be welded to frame with three (3) 1/4” fillet welds, 2 1/2”
long on each side of the hanger and a fillet weld on each end. Welds should be meet
the quality standards of the Amercan Welding Society, D1.1, Structural Welding Code.

Washer(s) must be placed
against the slotted hole in the
axle bracket.

NOTE: Low profile brackets
have plain round holes.

OUTSIDE BRACKET DIMENSION

OUTSIDE FRAME

SIDE MOUNT INSTALLATION

14

Wheel and Tire Safety

WHEEL AND TIRE SAFETY

Your trailer manufacturer has specified the wheel and tires to be used. It
is very important that you do not make any changes that may alter the
recommended size or load capacities. Any deviations, however slight or
unnoticeable, may cause damage or be dangerous to operate.

TIGHTENING PROCEDURE

After mounting a wheel over the studs, start all lug nuts by hand to 1.
prevent cross threading.

After all the lug nuts have been snugged, tighten the nuts to the 2.
recommended torques using the sequence and progressive values
provided on page 16.

Re-torque after first 50 miles of use, and periodically re­check the torque.

TORQUE REQUIREMENTS

It is a necessary procedure to periodically check the torque levels of your
wheel lug nuts. They must be maintained at the appropriate torque rec­ommendations to prevent loose wheels, potentially broken studs and to
prevent the wheel from separating from the axle.

TIRE PRESSURE

Tire pressure should be checked frequently, and inflated to the tire manu­facturer’s recommendations.

CAUTION

Wheel torque must be maintained to

insure that damage is not incurred to the

wheel, wheel studs and or attaching parts.

15

Wheel and Tire Safety

REQUIRED WHEEL TORQUES (ft – lbs)

1st Setting 2nd Setting Final Setting

8-12-13” Wheel 20 — 25 35 — 40 50 — 75

14-15-16” Wheel 20 — 25 50 — 60 90 — 120

16” Wheel 20 — 25 70 — 80 130 — 150
9/16” studs

WARNING

Modifications of the tire & wheel assembly can result in

damage to the trailer or personal injury if not used

according to the manufacturer’s specifications.

BOLT TIGHTENING SEQUENCE

5 Hole Pattern 6 Hole Pattern 8 Hole Pattern

1

1

1

2

2

2

3

3

3

4

4

4

5

5

5

78

6

6

16

Replacement Parts

REPLACEMENT PARTS

BEARING REPLACEMENT CUPS & CONES

BRAKE SIZE HUB CUP CONE

7 x 1 1/4 4 or 5 Bolt L-44610 Inner L-44649 Inner
and Outer and Outer

10 x 2 1/4 5 or 6 Bolt L-68111 Inner and L-68149 Inner and
L-44610 Outer L-44649 Outer

12 x 2 6 Bolt 25520 Inner and 25580 Inner and
15245 Outer 15123 Outer

12 x 2 8 Bolt 25520 Inner and 25580 Inner and
14276 Outer 14125A Outer

12 x 3 1/2 8 Bolt 25520 Inner and 25580 Inner and
02420 Outer 02475 Outer

BRAKE SHOE REPLACEMENT KITS

BRAKE SIZE SINGLE KIT (1 BRAKE)

7 x 1 1/4 K71-45

10 x 2 1/4 PPDSL10E

12 x 2 PPBSL12E

12 x 3 1/2 right side 4737-3, left side 4737-4

MAGNET REPLACEMENT KITS

BRAKE SIZE MAGNET KIT NUMBER WIRE COLOR BRAKE MTG. NUT TORQUE (FT-LBS)

7 x 1 1/4 K71-57 White 45-70

10 x 2 1/4 PPBM10E Green 45-70

12 x 2 PPBM12E White 25-50

12 x 3 1/2 4738-23 Orange 60-90

SEAL REPLACEMENT

BRAKE SIZE HUB SEAL

7 x 1 1/4” 4 or 5 Bolt 12192TB

10 x 2 1/4” 5 or 6 Bolt 171255TB

12 x 2” 6 or 8 Bolt 22333TBN

12 x 3 1/2” 8 Bolt 22333TBN Grease
370219A Oil