Onan DDB Series, 50.0DDB-15R/C, 50.0DDB-9XR/A, 50.0DDB-9XR/B, 50.0DDB-9XR/C Operator's Manual And Parts Catalog

DQODQ

OPERATORS

•it

D

ELECTRIC

PARTS

FOR

GENERATING

C

SETS

UAL LOG

DDB

SERIES

944-0302

4A74

Printed

in

U.S.A.

TABLE

TITLE PAGE

OF

CONTENTS

Introduction

Specifications...

Safety Precautions 4 Description Installation 11 Operation 18 General

Parts

Catalog— 25

1

2

7

Maintenance • 23

WARNING

MANUFACTURER RECOMMENDS THAT ALL SERVICE INCLUDING INSTALLATION OF REPLACEMENT PARTS BE

DONE BY QUA LI FIED ELECTRICA L A ND/OR MECH A N/CA L SERVICEMEN. FROM THE STANDPOINT OF POSSIBLE INJURY AND/OR EQUIPMENT DAMAGE IT IS IMPERATIVE

THATTHE SERVICEMAN IS QUALIFIED.

INTRODUCTION

FOREWORD

This manual is applicable to the DDB Series electric generating set, consisting of an Onan UR 50.0KW AC generator, driven by a John Deere 6329D diesel engine. Information is provided on installation, operation, set. The manual should be used in conjunction with the John Deere engine manual, as your specific engine may have variations due to optional equip-

ment available.

WARNING | Onan

troubleshooting and parts ordering for the

uses

' throughout the

possible This

symbol is

possible

this symbol

text

to warn of

injury or death.

used

to warn of

equipment damage.

MODEL

Identify your model by referring to the MODEL and SPECIFICATION NO. as shown on the Onan nameplate. Electrical characteristics are shown on the lower portion of the nameplate.

1.

Indicates Kilowatt rating.

2.

Factory code for SERIES Jdentification. .

3. Indicates voltage code.

4.

Factory codefordesignating optionalequipment.

5. Specification letter. (Advances when factory

IDENTIFICATION

50.0 DDB 15R /IB

1 2 3 4 5

15 indicates reconnectible R indicates remote electric start

makes production modifications.)

IMPORTANT!

RETURN

regarding the set, always mention the complete Model, nameplate. This nameplate information is necessary to properly identify your unit among the many types manufactured. Refer to the engine nameplate when requesting information from its manufacturer. The Onan nameplate is located on the right side of the generator; the John Deere nameplate is on the left side,

WARRANTY

If it is necessary to contact a dealer or the factory

Spec No. and Serial No. as given on the Onan

on the engine block.

Left side and right side are considered when viewed from the

ngine or front end of the generating set.

CARD

ATTACHED

TO

UNIT.

ENGINE

Engine Manufacturer John Deere Engine Series 300—6329D Number of Cylinders 6 Displacement 329 cu. inches BHP @ 1800 RPM 85 Compression Ratio 16.3:1 Bore 4.02-inches Stroke '. 4.33-inches Fuel ASTM No.2 Diesel Battery Voltage 12 Battery Group (Two 6-Volt, 135-A.H.) 2H Starting Method Solenoid Shift Governor Regulation 5% No load — Full load

DETAILS

GENERATOR

Type UR 15R 60 Hz

Rating (Watts)

60 Hertz Continuous Standby 50,000 (62.5KVA) 50 Hertz Continuous Standby 40,000 (50.0KVA).

AC Voltage Regulation 2%

. 60 Hertz RPM 1800

50 Hertz RPM 1500 Output Rating 0.8PF . AC Frequency Regulation 3..Hz

Battery Charging Current 35 Amperes

CAPACITIES

Cooling System (Includes Radiator) 5 aal. Engine Oil Capacity (Crankcase) 12 ats. Exhaust Connection (inches pipe thread) ats.

AIR

REQUIREMENTS

. Engine Combustion 200 CFM

Radiator Cooled Engine 4185 CFM

Total for Radiator Cooled Model 4385 CFM Alternator Cooling Air

(1800 RPM) 1000 CFM (1500 RPM) 834 CFM

Fuel Consumption at Rated Load 3.9 GPH

DETAILS

AND

REQUIREMENTS

(1800 RPM)

UR515R50Hz

UR 3R 60 Hz

GENERAL

Height : 52.6-inches

Width ! 33.0-inches

Length 79.75-inches

Weight (approx.) 2180-pounds

VOLTS

FREQr

TABLE

1. UR

PHASE "AMPERES

GENERATOR VOLTAGE

DOUBLE

DELTA

SERIES

DELTA

PARALLEL

OPTIONS

SERIES

WYE

REF.

VOLTAGE

WIRE

(W12) TAP

120/240 115/230 120/240 115/230 120/208 127/220 139/240 110/190 115/200

240/416 254/440 277/480

220/380 230/400

9 X R

347/600

50.0KW 40,000KW

60 Hz 50 Hz 60 Hz 50 Hz 60 Hz 60 Hz 60 Hz 50 Hz 50 Hz 60 Hz 60 Hz 60 Hz 50 Hz 50 Hz

60 Hz

.62.5KVA

50.0KVA

1 1 216

3 3 3 3 3 3 3 3 3 3 3

. 3

3

60 Hz 50 Hz

260

151 125 174 164 151 151 142

87 82 75 76 72

60

X X

X

' X

X X X

X X X X X

H5 H6 H5 H6 H3 H4 H5 . H3 H4 H3 ; H4 H5 H3 H4

H3 — Not

Reconnectible

SAFETY

PRECAUTIONS

Throughout this manual flags containing Warnings and Cautions, alerting you to conditions that could result equipment,

ONAN recommends that

become thoroughly acquainted with equipment before cumulated experience

available

the most efficient and safest manner possible. These

recommendations

precautions

them!

REMEMBER. Most accidents are caused

follow simple

precautions.

KNOW

if

the

to

you, enabling

are

and

Most accidents

YOUR

MANUAL

notice

and the

for

you

will find eye-catching

in

danger

is

ignored.

you

read your manual

you

start your unit.

of

ONAN engineers

you

to

following safety

your protection. Study and know

fundamental safety rules

can be

prevented!

- KNOW

to

you

it and

The ac-

operate your

by

failure

YOUR

EQUIP-

or

and

your

set

the

is

to

or

in

MENT

If

it is

necessary

unit

is

running,

to

hot

exhausts, moving parts,

Do

not

stand

electrical equipment.

placed

Fuel

•

DO

on dry

System

NOT

fill fuel tanks while engine

unless tanks DO

NOT the vicinity Internal combustion engine fuels are highly flammable.

SMOKE

to

make adjustments while

use

extreme caution when close

etc.

on a

are

of the

wet

floor while working

Use

rubber insulative mats

wood platforms.

outside engine compartment.

OR

USE

AN

OPEN FLAME

generator

set or

is

fuel tank.

the

on

running,

in

General

• Keep your generating area clean and free from obstructions. Remove oil deposits; keep

• Provide appropriate fire extinguishers and install them

in

convenient locations. Consult your local fire department tinguisher tetrachloride

rated

• Make sure that are secure. Tighten supports guards

•

Do not

moving parts, trical equipment.

to

ABC

in

position over fans, driving belts,

wear loose clothing

for the

use.

on

electrical fires. Use extinguisher

by

NFPA.

all

or

set and the

the

floor clean

correct type

Do not

fasteners

jewelry while working

use

on

surrounding

and

dry.

foam

or

the generating

and

clamps, keep

in the

of ex-

carbon

etc.

vicinity

on

elec-

all

set

of

REMEMBER YOU'RE COURTING A POSSIBLE EXPLOSION AND FIRE!

Make sure that oily rags are engine.

Fuel lines must secured, should copper piping on flexible lines as copper will work

harden natural gas

or diesel Your engine installation should be equipped with

a means when fuel

Fuels under pressure (e.g. natural gas

petroleum gas) should be controlled by a positive shutoff valve, preferably automatic, any valve integral with

regulator equipment.

— IF

and free from leaks. Piping attheengine

be

approved flexible line.

and

or

fuel.

of

positive fuel shutoff

is

YOU

CAN

SMELL FUMES

not

left on

be of

become brittle.

gaseous fuels,

conducted from a remote source.

steel piping, adequately

Use

but

the

carburetor

or

nearthe

Do not use

black pipe

not on gasoline

in

applications

or

liquified

in

addition

or

—

on

to

gas

Exhaust

• Exhaust products of any internal combustion

System

engine are toxic and can cause injury, or death if inhaled. within a confine, should be equipped with an exhaust system to discharge gases to the at-

mosphere. Do not use exhaust gases to heat a

compartment.

All engine installations, especially those

Electrical

The electrical installation exterior to your generator should have been performed by qualified licensed electricians. All local and state codes should have been consulted and complied all load circuit breakers adequately protect electrical functions, all circuits are properly grounded and wiring is correct capacity.

System

with.

It is essential that

• Make sure that your exhaust system is free of leaks.

Ensure that exhaust manifolds are secure

and have not warped by bolts unevenly torqued.

Coolant

• Coolants under pressure have a higher boiling

• Radiator fan belts are guarded for your protec-

•

Keep

Ventilation

• Check remote radiators frequently. Remove any

• Check ventilation louvres frequently. Make sure

System

point than that of water. DO NOT open a radiator

or heat exchanger pressure cap or break a system while the engine is running, and in no case until the system has been bled off.

tion.

DO NOT remove covers or guards.

your

hands

System

dirt, debris, bird nests, etc.

that free-fall louvres and motor operated louvres open and close properly and that there is no

restriction in the free air flow.

away

from

moving parts.

• Tag open switches.

• DON'T tamper with interlocks.

• Before starting work on the generating set, disconnect batteries. This will prevent inadvertent starting of the set.

• Use extreme caution when making adjustments on the electrical components in the control panel while the engine is running. High voltages are present and could cause serious injury or death.

• DO NOT SMOKE while servicing batteries. Verify correct polarity of battery cables before connecting.

Lead acid batteries give off a highly explosive hydrogen gas which can be ignited by electrical arcing or by smoking. When connecting batteries, connect the ground lead last.

DUAL RANGE

AC VOLTMETER

INDICATOR LAMPS -INDICATE UPPER

OR LOWER SCALE ON VOLTMETER

PANEL LIGHT AND SWITCH

OIL PRESSURE GAUGE

VOLTAGE ADJUSTING

RHEOSTAT

EXCITER

CIRCUIT BREAKER

PHASE SELECTOR SWITCH

DUAL RANGE

INDICATE UPPER

INDICATOR LAMPS

ON VOLTMETER

AND

LOWER SCALE

AND

AMMETER—.

FIGURE

AC

1.

TYPICAL CONTROL PANEL

AMMETER

•—RUN-

(ONE

WATER TEMPERATURE

FAULT LAMP

DC AMMETER

1/4

OPEN HINGED CONTROL PANEL DOORS.

STOP- REMOTE SWITCH

FAULT

LAMP)

% TURN FASTENERS- TURN BOTH

SCREWS

PANEL LIGHT

GAUGE

TURN FASTENERS. TURN BOTH

TO

OPEN HINGED CONTROL-

PANEL DOORS

AND

SWITCH

TO

DUAL RANGE

AC VOLTMETER

VOLTAGE

ADJUSTING

RHEOSTAT

FREQUENCY

METER

RUNNING TIME

METER

EXCITER CIRCUIT BREAKER

PHASE SELECTOR SWITCH

FIGURE

2. OPTIONAL

OIL PRESSURE

WATER TEMPERATURE

DC AMMETER

«UN-STOP-REMOTE SWITCH

(ALSO

FAULT LAMPS

TEST LAMP BUTTON

ENGINE MONITOR RESET SWITCH

USED ONLY

WITH FIVE FAULT LAMPS

CONTROL PANEL (FIVE FAULT LAMPS)

ON

GAUGE

A.

RESET SWITCH

ENGINE MONITOR)

AND

CONTROL PANELS

FOR

DESCRIPTION

GENERAL

An ONAN DDB series electric generating set is a complete unit consisting of' an -engine driven AC generator, with controls and accessories as ordered.

ENGINE

The engine on the DDB is a John Deere 6329D as described in engine manual. Basic measurements and requirements will be found under Specifications. However, the engine used for your unit may have variations due to optional equipment available, therefore the John Deere manual should be sulted.

AC

GENERATOR

The generator is an ONAN Type UR, 12 revolving

alternating current is generated in the statorwinding.

The alternator rotor, attached directly to the engine flywheel turns at engine speed. Therefore, the speed at which the rotor turns, determines generatoroutput frequency. The 60 hertz set operates at 1800 rpm and the 50 hertz at 1500 rpm. Excitation is achieved by feeding AC output to a voltage regulator, where it is compared with a reference voltage in the regulator,

rectified and returned to the field of the exciter, then to the exciter armature, rectified and fed to the generator phase and single phase. Excitation and regulation are the same for either unit.

CONTROL

The following is a brief description of each of the standard controls and instruments located on the face of the panel. See Figure 1.

DC

Panel Light and Switch: Illuminates control panel. Oil Pressure Gauge: Indicates pressure of lubricating

oil in engine (wired to a sensor unit located on the

engine).

field,

field.

PANEL

reconnectible brushless unit. The

The UR generator is available in 3-

lead,

con-

4 pole

AC

PANEL

AC Voltmeter: Indicates ACgeneratoroutputvoltage.

Dual range instrument: measurement range in use

shown on indicator light. AC Ammeter: Indicates AC generatoroutput current.

Dual range instrument: measurement range in. use shown on indicator lights.

Voltmeter-Ammeter Phase Selector Switch: Selects the phases of the generator output to be measured by the AC voltmeter and AC ammeter.

Voltage Regulator: Rheostat, provides approximately

plus or minus 5% adjustment of the rated output voltage.

Exciter Circuit Breaker: Provides generator exciter and regulator protection from overheating in the event of certain failure modes of the generator, exciter and voltage regulator.

Running Time Meter: Registers the total number of

hours,

to

1/10th record for periodic servicing. Time is accumulative, meter cannot be reset.

Frequency Meter: Indicates the frequency of the generator output in hertz. It can be used to check engine speed. (Each hertz equals 30 rpm.)

OPTIONAL

DC

PANEL

Warning Lights: Eliminates the one "Fault" light and substitutes five indicator lights to give warning of —

a. Overcrank (failed to start) b. Overspeed c. Low oil pressure d.

High engine^t.emperature

e. Low engine temperature

Operation of these lights will be discussed in junction with engine monitor panel.

that the unit has run. Use it to keep a

EQUIPMENT

con-

Water Temperature Gauge: Indicates temperature of circulating coolant in engine. (Wired to a sensor unit located on the engine.)

Battery Charge Rate DC Ammeter: Indicates the battery charging current.

Run-Stop/Reset-Remote Switch: Starts and stops the unit locally or from a remote location.

Warning Lights: Indicates "Fault" in engine operation.

Reset Switch: Manual reset for engine monitor after shut-down.

Lamp'Test: Press to test warning lamp bulbs (when engine is running only).

CONTROL

The only equipments discussed in this section will be those which the operator may have reason to adjust or inspect for service.

Terminal Board (TB) 21: Connection of wire W12 to terminals H3, H4, H5, and H6 is made at this point, to change reference voltage when reconnecting generator for different voltages. Refer to Figure 14.

PANEL

INTERIOR

c. Low oil pressure (14 psi). d.

High engine temperature (215°F).

On standard control panels, all four alarms are wired into one common fault lamp; on units with five fault lamps, four have shutdown alarms, the fifth (low engine temperature) lights a fault lamp only. Refer to Table 2.

Voltage Regulator: Solid state unit, consisting of VR21,

CR21 and L21. Controls AC output from

generator at predetermined level regardless of

Regulation plus or minus

0.8 P.F.

Engine Monitor: Printed circuit plug-in modules

provide the following functions:

1.

A 75 second cranking period.

2.

Approximately a 12-1/2 second time delay for oil

pressure buildup.

3. An external alarm contact to light a fault lamp and shut down the set for alarm conditions such as:

a. Overcrank (failed to start after cranking 75

seconds).

b. Overspeed (engine speed reaches 2100 rpm).

2%

from no load to full

load..

load,

Standard Cranking Module: Limits engine cranking time to 75 seconds. If engine fails to start after 75 seconds the engine monitor lights a fault lamp and opens the cranking circuit.

OPTIONAL

Cycle Cranker: Plug-in module replaces standard cranking circuit. Automatically provides a 15-second crank time and a 10-second rest time for three ON and two OFF cycles in 65 seconds. If engine fails to start, after 75-seconds the engine monitor lights a fault lamp and opens the cranking circuit.

Pre-Alarm: pressure or high engine temperature. Requires two sensors each for engine temperature and oil pressure.

MODULES

Gives advance warning for low oil

TABLE

2.

FAULT

LAMP OPTIONS

SYSTEM

PENN STATE.

SINGLE LIGHT

Overcrank Overspeed Low Oil Pressure High Engine Temperature

STANDARD

SINGLE LIGHT

Overcrank Overspeed Low Oil Pressure High Engine Temperature

5 LIGHT

Overcrank Overspeed Low Oil Pressure High Engine Temperature Low Engine Temperature

5 LIGHT

PRE-ALARM Overcrank

Overspeed Low Oil Pressure High Engine Temperature Low Engine Temperature

- With additional optional sensors.

FAULT :-

FAULT

LAMP

X X X X X X X

X X X X X X X X X

X X X X X X

X

X X

X

. X X X X X

STOP

ENGINE

X X

X

X X X

X X

* *

EXTERNAL

PRE-

ALARM ALARM

X

X ,1

X

X X X

X X

THIMBLE

(SEE DETAIL)

DUCT

SWEEPING ELBOW

EXHAUST LINE

TO MUFFLER

AUTOMATIC

LOAD TRANSFER

SWITCH

FIGURE

3.

TYPICAL

INSTALLATION

10

INSTALLATION

GENERAL

Installations must be considered individually. Use these instructions as a general guide. Meet regulations of local building codes, fire ordinances, etc., which may affect installation details. See Figure

3. Installation points to consider include:

1.

Level mounting surface.

2.

Adequate cooling air.

3. Adequate fresh induction air.

4.

Discharge of circulated air.

5. Discharge of exhaust gases.

6. Electrical connections.

7. Fuel connections.

8. Water connections.

9. Accessibility for operation and servicing.

10.

Vibration isolation.

11.

Noise levels.

Radiator set cooling air travels from the rearof theset to the front end. Locatethe room or compartment air inlet where most convenient, preferably to the rear of the set. Make the inlet opening at least as large as the

radiator area (preferably 1-1/2 times larger).

Engine heat is removed by a pusher fan which blows

cooling air out through the front of the radiator.

Locate the cooling air outlet directly in front of the radiator and as close as practical. The opening size

should be at least as large as the radiator and shape of the air outlet duct should offer minimum

restriction to air flow. Use a duct of canvas or sheet metal between the radiator and the airoutlet opening.

The duct prevents recirculation of heated air.

Provide a means of restricting the air flow in cold

weather to keep the room or compartment temperature at a normal point.

area.

Length

LOCATION

Provide a location that is protected from the weather

and is dry, clean, dust free and well ventilated. If

practical,

tion from extremes in weather conditions.

install inside a heated building for protec-

MOUNTING

Generating sets are mounted on a rigid skid base

which provides proper support. Install vibration

isolators between skid base and foundation. For convenience in draining crankcase oil and general servicing,

inches high). If mounting in a trailer, or for other

mobile applications, bolt securely in place. Extra support for the vehicle flooring may be necessary.

Bolting down is recommended for stationary installations.

mount set on raised pedestals (at least 6

VENTILATION

Generating sets create considerable heat which must

be removed by proper ventilation. Outdoor installations rely on natural air circulation but mobile and indoor installations need properly sized and

positioned vents for the required air flow. See

Specifications for the air required to operate with rated

load under normal conditions at 1800 rpm.

A shelter housing with electrically operated louvres is available as an option. Transformers connected across the generator output supply current to the motors.

When the generator is operating, current in the

transformers actuate the motors and open the

louvres. The louvres are held open for the duration of the set operation, then are closed by return springs when the set is shut down.

City water cooled sets do not use the conventional radiator. A constantly changing water flow cools the engine. Ventilation isseldom a problem, butsufficient air movement and fresh air must be available to properly cool the generator, disperse heat convected off the engine and support combustion in the engine.

For small compartments, a duct of equal or larger area

than generator outlet is recommended to remove the

heated air from the generator air outlet to the outside atmosphere. Limit bends and use radius type elbows where needed. A larger, well ventilated compartment or room does not require a hot air duct.

Installations made in a small room may require installation of an auxiliary fan (connected to operate only when the plant is running) of sufficient size to assure proper air circulation.

11

CITY

WATER

COOLING

An optional method of engine cooling, in place of the conventional radiator and fan, uses a constant pressure water supply. This is referred to as CITY WATER COOLING. There are two varieties of city water cooling: the HEAT EXCHANGER SYSTEM and STANDPIPE SYSTEM. See Figures 4 and 5.

EXPANSION

TANK

C

=FROM

•HEAT EXCHANGER

• TO ENGINE

ENGINE

ANTI-SIPHON—

STAND

PIPE

SOLENOID VALVE

(OPFNS WHEN

PLANT IS RUNNING )

— LOCKSHIELD VALVE

WATER

IN

FIGURE 5. TYPICAL STANDPIPE SYSTEM

STRAINER

DRAIN

—

FROM

ENGINE

:TO

ENGINE

(RATE OF FLOW)

SOLENOID

VALVE

(OPENS WHEN

DRAIN

LOCKSHIELD

VALVE

(RATE OF FLOW)

FIGURE 4. TYPICAL HEAT EXCHANGER SYSTEM

PLANT IS RUNNING)

STRAINER

WATER

IN

The HEAT EXCHANGER provides fora closed engine cooling system. Engine coolant flows through a tubed chamber, keeping the coolant separate from the cool

"raw" water supply. The coolant chamber must be filled for operation, as for a radiator cooled set.

The STANDPIPE SYSTEM uses a mixing or tempering tank. Cooling water that circulates through the engine mixes with a source of cool "raw" water. The "raw" water supply must be free of scale forming lime or other impurities.

On both systems use flexible pipe .for connecting water supply and outlet flow pipes to engine. Pipe the outlet flow to a convenient drain. Install an electric solenoid valve and a rate of flow valve in the water supply line. The electric solenoid valve opens and allows water flow through the system only when the plant operates. The rate of flow valve, either automatic or manual, provides for the proper flow rate

to the engine. Adjust the flow to maintain water temperature between 165 degrees and 195 degrees while viewing the water temperature gauge.

Before filling cooling system checlc all hardware for security. This includes hose clamps, capscrews, fittings and connections. Use flexible coolant lines wilh heat exchanger, standpipe or remote mounting radiator.

WATER

JACKET

HEATER

(Optional)

This heater is installed to maintain an elevated engine temperature in lower ambient temperature applications. It heats and circulates engine coolant, and is thermostatically controlled (Figure 19).

12

EXHAUST

WARNING

Engine exhaust gas must bepiped outside building or

enclosure. Do not terminate exhaust pipe near inlet

vents or combustible materials. An approved thimble (Figure 6) must be used where exhaust pipes pass

through walls or partitions. Pitch exhaust pipes

downward or install a condensation trap (Figure 7) at

the point where a rise in the exhaust system begins.

Avoid sharp bends; use sweeping long radius elbows. Provide adequate support for mufflers and exhaust pipes.

Refer to Figure 3 for a typical exhaust installa-

tion.

Shield or insulate exhaust lines if there is danger of personal contact. Allow at least 9-inches of clearance if the pipes run close to a combustible wall or partition. Use a pipe at least as large as the 3-inch pipe size outlet df the engine with a flexible portion

Inhalation of exhaust gases can result in death.

RAIN CAP

DRIP CAP

. IF EXHAUST LINE MUST BE PITCHED UPWARD.

.CONSTRUCT A TRAP OF PIPE FITTINGS AT

B4,.i "WH PERIODICALLY

FIGURE 7. EXHAUST CONDENSATION TRAP

POINT OF RISE

DRAIN CONDENSATION TRAP

HOLES IN END OF

INNER SLEEVE

ROOF

• HOLES IN

WALL OR PARTITION-

NOTE VENTILATED THIMBLE DIAMETER 6" LARGER B4,

THAN EXHAUST LINE

FIGURE 6. EXHAUST THIMBLE

.,_ -'INNER SLEEVE

|[WHII|II|IB

Jf END OF

between the engine and the muffler. Do not connect a flexible line to the exhaust manifold. Minimum diameters and maximum lengths of pipe are as follows:

Single Exhaust system: 2'/2-inch pipe 58-feet

3-inch pipe 191-feet 3'/2-inch pipe 419-feet

Maximum permissible exhaust restriction (back

pressure) is 25-inches H2O .(1.84-inches Hg.).

13

FUEL PUMP

RETURN

LINI.

INJtCTOR

FUEL RETURN

'DAY'TANK

5 GAL MIN. CAPACITY

All models require fuel return line from injectors

to

tank.

FLOAT TYPE

VALVE

VENT LINE

FUEL TRANSFER

PUMP: - ELECTRIC

MOTOR DRIVEN

•

I SIZE LARGER

OVERFLOW

NOTE:

Where used. Float-type

"Day" Tank and Lines

must

be

below injector

return outlet!

WARNING: pipe main fuel tank. A hazardous fire condition exists with spilled

It is

be

installed between

necessary that

fuel.

an

the day

overflow

tank

and

FIGURE

8.

SUPPLY LINE

UNDERGROUND

FUEL

TANK

u

DAY TANK INSTALLATION

-

FILL

PIPE

14

FUEL

SYSTEM

The John Deere engines used on the DDB sets are designed for use with ASTM No.2 Diesel

fuel.

They will however, operate on diesel fuels within the specifications delineated in the John Deere engine manual.

FUEL

CONNECTIONS

Check local regulations governing the installation of a fuel supply tank.

In any diesel engine installation, utmost importance. Make every effort to prevent entrance of moisture or contaminants of any galvanized material.

fuel,

system cleanliness is of

kind.

Do not use lines or fittings of

A fuel lift in excess of 10-feet is not recommended without a day tank installation, because of fuel drainage. Horizontal run, if the supply tank is level with the fuel pump should not exceed 25-feet.

However, a day tank is again recommended.

The fuel inlet is to the transfer pump and is threaded for

1/8-ipch

pipe. Injector pump return line is common with the injectors' retum line, and requires a 1/8inch low pressure hose connection.

DAY

TANK

Generator set installations may be equipped with an optional integral fuel Day tank. A float operated valve controls fuel flow of up to 300 psi into the fuel tank. The correct level is maintained to assure a constant source of

fuel.

It is necessary to install an overflow line between the Day tank and the main fuel tank. Refer to the installations included with the tank. See Figure 8 for an example of a Day tank installation.

BATTERY

Starting the plant requires 12-volt battery current. Use two 6-volt (see specification) batteries for a normal installation. Connect the batteries in series (negative post of first battery to positive post of

second) as in Figure 9. Necessary battery cables are

on unit. Service the batteries as necessary. Infrequent

plant use (as in emergency standby service) may allow the batteries to self-discharge to the point where they cannot start the plant. If installing an automatic transfer switch that has no built-in charge circuit, connect a separate trickle charger. Onan automatic transfer switches include such a battery charging circuit.

WARNING

being charged.

Do not smoke while servicing batteries. Lead

acid batteries give off explosive gases while.

FIGURE 9. BATTERY CONNECTION

BATTERY,

HOT LOCATION

Batteries will self discharge very quickly when installed where the ambient temperature is consistently above 90°F, such as in a boiler room. To lenghten

battery life, dilute the electrolyte from its normal 1.275 specific gravity reading at full charge to a 1.225

reading.

The cranking power is reduced slightly when the electrolyte is so diluted, but if the temperature is above 90° F, this should not be noticed. The lengthened battery life will be worth the effort.

1.

Fully charge the battery.

2.

With the battery still on charge, draw off the

electrolyte above the plates in each

cell.

DO NOT ATTEMPT TO POUR OFF; use an hydrometer or filler bulb and dispose of it in a safe manner. Avoid skin or clothing contact with the electrolyte.

3. Refill each cell with distilled water, to normal level.

4.

Continuecharging fori hourata4to6hourrate.

5. Test each

1.255, reduced to

cell.

If the specific gravity is still above

repeat steps 2, 3, and 4 until the reading is

1.225.

Usually, repeating steps twice is

sufficient.

15

REMOTE CONTROL CONNECTIONS

Provision is accomplished within switches across remote terminal shown and remote station AWG wire; between

16AWG wire.

is

made foraddition

the

control

in

Figure

on a 4

10. If

place terminal block situated

box.

Connect

the

distance between

is

less than 1000-feet,

1000-

COMMON

ALARM

I

ALM

GRD RMT

and

REMOTE

SWITCH

of

remote starting. This one

or

more remote

and B+

terminal

the

use No.

2000-feet,

B+

use No.

as

set

18

o

FIGURE

WIRING CONNECTIONS

Most local regulations require that wiring connections

be

made

installation

tion.

All requirements installation site.

If

the

throw transfer switch must always

this switch (either automatic impossible current

Instructions

transfer control

LINE

be

connections, wire sizes, etc. must conform

installation

for

to

be

for

10.

REMOTE STARTING

by a

licensed electrician

inspected

of

electrical codes

is for

and

approved before opera-

standby service, a double

or

commercial power

connected-to

the

connecting

are

included with such equipment.

LOAD

and

in

effect

be

used. Connect

manual)

so

and

load

at

the same time.

an .

automatic load

that

the

to

at the

that

it is

generator

GEN.

FIGURE

4.

Close front panel

12.

CONTROL

fasteners.

5. Connect load wires

Preceding instructions voltage (designated 9X) connections connect load wires.

IM/MO

m/uo

are

do not

or a 120/240 voltage (designated 3R); Ihese

made

at the

MNIIATM COMNICIIOM tCNIMATIC

•1AOIAM

BOX

(SIDE PANEL REMOVED)

and

secure with

to

generator leads.

apply

to

models with a 347/600

factory.

ii n ?»tn

The

installer must only

OIMIIATM COMNICTIOM WltlMG •lAOBAM

(WITH CUIIINf TIANftMMMiaS

nm

T4

l«

TITT

TI

no i*

17

ta in

1/4

WMM

1> IIO

14

to ia in ii io

turn

UMBI

NOTE:

SHOWN WITH LINE CONNECTED

Control

FIGURE

Box

11.

LOAD TRANSFER SWITCH

Connections: The factory ships these

lead generators with load connection wires connected together are labeled

Tl

in

the control box. These 12 wires

through

T12 and

must

TO

be

LOAD.

12

NOT

brought together before making load connections. Proceed follows:

1.

Remove either right, left

box.

See

Figure

2.

Connect wires together as shown

Figure

13

12.

according

or top

to

voltage desired.

panel from control

on

panel and

3. Open hinged control panel doors. Connect lead from terminal desired.

H5

and H6. See

63 to

correct terminal

These terminals

Figure

are

14.

labeled

for

voltage

H2, H3, H4,

as

in

16

iar/*io

US/IO0

i»«A«o in/400

ntfuo

IMAOO

120/240 VOLT, I PHASE,

60 CYCLE

NAMEPLATE VOLTAGE

CODE

3

CONNECT

TERMINAL

LEAD

63

FIGURE

IW til

111

11 TT

347/600 VOLT. 3 PHASE,

NAMEPLATE VOLTAGE

Tl

TO

T2

FROM

TO H5

13.

VOLTAGE CONNECTIONS

Tl

*

CONNECT LEAD FROM

TERMINAL

14

11

60 CYCLE

CODE

9X

,T2

•TO

T3

63 TO H5

Any combination of 1 phase and 3 phase loading can be used at the same time as long as no terminal current exceeds the NAMEPLATE rating of the generator. If no 3 phase output is used, usable 1 phase output is 2/3 of 3 phase KVA.

CONNECT FROM

TERMINAL #63

TO EITHER H3. H4

H5.

OR H6.

FIGURE 14. CONNECTING LEAD FROM TERMINAL 63

120/240 Volt, Single Phase, 12 Lead: Terminal nection L0 can be the ground (neutral). For 120 volts, connect the hot load wires to either the Ll or L2 connection, Figure 15. Connect the neutral load wire to the L0 connection. Two 120 volt circuits are thus available, with not more than 1/3 the rated capacity of the set available on either circuit. If using both circuits, be sure to balance the load between them.

For 240 volts, connect one load wire to the L1 connection and the second load wire to the L2 connection. Terminal connection L0 is not used for 240 volt service.

con-

"1 J

120 V

I 20 V

240 V

__L_

FIGURE 15. 120/240 VOLT, SINGLE PHASE, 12 LEAD

r~~r~

240 V

120 V

1

120

_1_

FIGURE 16. 3 PHASE, DELTA CONNECTION, 12 LEAD

3 Phase, 4 Wire, Wye Connected Set; 12 Lead: The 3 phase, 4 wire set produces line to neutral voltage and line to line voltage. The line to neutral voltage is the lower voltage as noted on the unit nameplate, and the line to line voltage.is the higher nameplate voltage.

For 3 phase loads, connect separate load wires to

each of the set terminals Ll , L2 and L3. Single phase

output is obtained between any two 3 phase terminals.

The terminal marked LOcan be grounded. For 1 phase loads,

connect the neutral (white) load wire to the L0

terminal.

the other three terminals — Ll, L2 or'L3. Three separate 1 phase circuits are available, with not more

than 1/6 the rated capacity of the set from any one

circuit.

If using 1 phase and 3 phase current at the same time, use care to properly balancethe 1 phase to exceed rated line current.

Figure 17 shows load connections for 120/208 voltage. Other voltages are available from either parallel wye or series wye illustration in Figure 13.

Connect the black load wire to any one of

240 V

V

240 V L2-

i

^^2(^0 V -

• DO NOT USE THIS CONNECTION FOR ANY

120 VOLT LOADS.

load,

> 1

•° CL rs m

i3 y

and not

120/240 Volt, 3 Phase, 4 Wire Delta Connected Set; 12 Lead:

The 3 phase Delta connected set is designed to supply 120- and 240 volt, 1 phase current and 240 volt, 3 phase current, Figure 16. For 3 phase operation, connect the three load wires to generator terminals Ll,

L2 and L3 — one wire to each terminal. For3 phase

operation the L0 terminal is not used. For 120/240 volt, 1 phase, 3 wire operation, terminals

Ll and L2 are the "hot" terminals. The L0 terminal is

the neutral, which can be grounded if required. For

120 volt service, connect the black load wire to either the Ll or L2 terminal. Connect the neutral (white) wire to the L0 terminal. Two 120 volt circuits are available.

® '

FIGURE 17. 3 PHASE, WYE CONNECTION, 12 LEAD

\ ^1

\ 120 V

\

L0

til

_-L_

17

208 V

I2QV f

208 V

v

I

L|

~—

208 V L2

-.13^

-\ > «

OPERATION

GENERAL

ONAN DDB Series electric generating sets are given a complete running test under various load conditions and are thoroughly checked before leaving the factory. Inspect your unit closely for loose or missing parts and damage which may have occurred in transit. Tighten loose parts, replace missing parts and repair any damage before putting set into operation.

PRESTART

Lubrication System: Engine oil was drained prior to shipment. Fill engine to capacities shown. After engine has been run, check dipstick, add oil to bring

level to full mark. Record total capacity for future oil changes. Do not mix brands or grades of lubricating oils.

AMBIENT TEMPERATURE

Below -10oF (-230C)

Between -10° F and 32° F

(-230C

and 0oC)

Above 32° F (0°C)

Use oil conforming

to these specifications

SERVICING

SINGLE VISCOSITY MULTI-VISCOSITY

SAE 5W

SAE 10W

SAE 30

API CD/SD

MIL-L-2104C* or SD

Series 3* MIL-L-46152

*API CC or CD

SAE 5W20

SAE 10W30

Not Recommended

API CC/SE, CC/SD

r^^J^j^^l L^^^^^^X initial starting of plant to allow coolant chambers to Overheating and damage to the engine could result from compliance.

2.

If engine is equipped with a cooling system filter, do not use antifreeze with an anti-leak formula. The stop leak element can prevent or retard the coolant flow through the filter, thereby eliminating the filtering process completely.

3. Be careful when checking coolantunderpressure. Itis advisable to shut engine down and bleed off pressure before removing pressure cap. Severe burns could result from contact with hot coolant.

1. Verify that the electric solenoid valve used

with city water cooled plants is open before

fill.

non-

Fuel System: Refer to the John Deere engine manual for fuel oil specifications. Check with fuel supplier and ensure that fuel supplied meets the specifications. Filter or strain fuel when filling tank.

Fuel supply tanks should be kept as nearly full as

possible by topping up each time engine is used.

Warm fuel returning from the injector pump heats the

fuel in the supply tank. If the fuel level is low in cold

weather, the upper portion of the tank not heated by

returning fuel tends to increase condensation. In

warm weather both the supply tank and fuel are warm.

Cool nightairlowersthetemperatureof thetank more

rapidly than the temperature of the

fuel.

Again this

tends to increase condensation.

Condensate mixing with the sulphur in the fuel forms

a sulphurous acid which will corrode and damage the

engine. KEEP FUEL CLEAN.

Oil capacities (nominal) Oil Pan and Filter — 12 quarts

Cooling System: Cooling system was drained priorto shipment. Fill cooling system before starting. Nominal capacity is 5 gallons. For units using eithera radiator or heat exchanger (city water cooled), fill the system with clean soft water. Use a good rust and scale inhibitor additive. If a possibility exists of a radiator cooled set being exposed to freezing temperatures use anti-freeze with an ethylene-glycol base.

During initial engine run, check the coolant level several times and replenish if necessary to compensate for air pockets which may have formed during filling. Refer to John Deere engine manual for additional information.

WARNING

DO NOT SMOKE while handling

fuel is flammable.

fuel.

Priming Fuel System: Verify that all connections in the fuel system are secure and no leaks exist. Proceed with priming as follows:

1.

Loosen bleed plug on top of fuel filter. Pump

primer lever (Figure 18) until a solid stream of fuel,

free of air bubbles, flows from bleed plug.

2.

Secure bleed plug.

3. Loosen inlet fuel line on injector pump. Operate primer lever on fuel transfer pump until a solid

stream of

fuel,

free of air bubbles, flows from inlet

line opening.

4.

Secure injector pump fuel inlet line.

5. Leave fuel transfer pump priming lever at lowest point of stroke.

18

Diesel

FUEL TRANSFER PUMP

FUEL INLET

After running 10 minutes under load the water temperature gauge should have stabilized at 180° to

195° F. On city watercooled units an adjustable valve is connected in the water supply line. Adjust the hand wheel valve to provide a water flow that will keep the water temperatu re gauge reading within the range of 180oF to 220° F.

PRIMING LEVER

FIGURE 18. PRIMING FUEL SYSTEM

»II the primer lever will not pump and no resistance is lelt at upper

end of stroke, turn engine over with starter to change position of fuel pump drive lobe on camshaft.

Check all connections in fuel system for security, to ensure that pressure will not bleed off when engine is not in use. Pressure should be maintained for immediate starting if unit is on standby service.

BATTERIES

Ensure that the cable connections to the batteries are secure. Coat connections with petroleum based or non-conductive grease to retard formation of corrosive deposits.

Check level of electrolyte to be at split ring mark. Measure specific gravity of electrolyte: SG 1.280 at 80° F. If distilled water has been added or specific gravity is less than

1.280,

place batteries on charge

until desired reading is reached. Do not over charge.

STARTING

When the preceding service functions have been performed,

1.

Crankcase filled.

2.

Cooling system filled — input solenoid valve

open.

3. Batteries charged and connected.

4.

Fuel solenoid valve open.

To start, move the "run-stop/reset-remote" switch to the "run" position. The engine should start afterafew seconds of cranking. Immediately after start, observe the oil pressure gauge. Normal oil pressure is between 45 and 65 psi. Check the following gauges:

1.

DC Ammeter — 10 to 30 amperes.

2.

AC Voltmeter — AC generator output voltage.

3. Frequency Meter — AC generator output frequency.

recheck to verify unit is ready to start.

STOPPING "

To reduce and stabilize engine temperatures, run the engine at no.:load for three to five minutes before shutting down..

Move the run-stop/reset-remote switch to stop tion to shut down the set.

Break-In Note: Run set at 50 percent rated load forthe first half-hour of initial operation after reaching operating temperature.

Non-Start: If after a few seconds of cranking engine fails to start, or starts and runs then stops and fault lamp lights, refer to appropriate troubleshooting chart, Table 3 or Table 4.

EXERCISE

PERIOD

Generating sets on continuous standby service are required to be operative at full load from a cold start in less than 10-seconds in the event of a power outage.

This imposes severe conditions on the engine. Friction of dry piston rings upon dry cylinderwalls causes scuffing and rapid wearing. These can be relieved by exercising the set at least once a week for a minimum time of 30-minutes per exercise period. Preferably,

run the set under at least 50 percent load to allow the engine to reach normal operating temperature. This will keep engine parts lubricated, maintain fuel prime, prevent electrical relay contacts from oxidizing and insure easy emergency starts. ONAN automatic transfer switches contain an optional exercise switch which,

by pre-selection, will start, determine run

period and shut down a set on a weekly frequency.

For example, the switch can be set for time of start,

length of run, A.M. or P.M. and day of week. After each exercise period, top up fuel tank, check

engine for leaks and unit for general condition.

Locate cause of leaks (if any) and correct.

posi-

19

TROUBLESHOOTING

(Units

with

TABLE

3

ENGINE

only one

SHUTDOWN

fault

lamp)

SYSTEM

SYMPTOM .

1.

Fault lamp lights and,engine

stops cranking after approx-

imately 75 seconds. . • .

2.

Fault lamp lights immediately

after engine-starts. * " *

i •*

3. Fault lamp lights after engine is running. . -

4.

Fault lamp lights - no fault

condition exists.

CORRECTIVE

1.

See engine service manual for "r-

troubleshooting fuel system, ignition system, etc. After correcting problem, reset the engine monitor by moving run-stop/reset-remote switch to reset position. Release and return to run position.

2.

Check for: - M

a. overspeed condition as engine •-•*

starts.

b. high temperature condition. ..:

c. faulty high engine temperature

sensor or overspeed switch. ^ ^>

d.

faulty starter disconnect.

3. Check the following: . . » a. Oil level-engine will shut down.

after approximately 12-172'seconds if low oil pressure sensor does not open.

b. Oil pressure sensor may be

defective.

c. High engine temperature - caused

by low coolant level, faulty thermostat, etc.

d.

Faulty high engine temperature

sensor.

e. Faulty starter disconnect.

4.

Be certain that no fault condition ~

exists.

Disconnect lead 29, 30 and 31 from TB11 inside control box (refer to wiring diagram). If fault lamp still lights with leads disconnected,

remove and replace engine monitor plug-in printed circuit board.

ACTION

•*.-«* . —:

20

TROUBLESHOOTING

(Units

with

TABLE

4

ENGINE

five

fault

SHUTDOWN

lamps)

SYSTEM

SYMPTOM

1.

Overcrank fault lamp lights and

engine stops cranking after

'"-^approximately 75 seconds.

2 - Overcrank fault lamp lights

after engine has run for approxi-

mately 75 seconds.

;-3.

cHigh engine temperature lamp

^. Jights as soon as engine starts.

4.

Low oil pressure lamp lights

after engine is running.

5. High engine temperature lamp lights after engine is running.

6. Overspeed lamp lights - no fault condition exists.

7. Low oil pressure fault lamp ..

. lights r no fault condition

exists.

CORRECTIVE

ACTION

•1.

See engine service manual for

troubleshooting fuel system, ignition ' system,

monitor by moving run-stop/reset-remote

switch to reset position, then to either

run or remote to restart engine.

2.

Replace.start-disconnect circuit

board.

3. Check for defective sensor or-actual high temperature condition. -

4.

Check: .

a. Oil level - engine will shut down

5. Check for:

a. Defective thermostat/thermostats. b. Low coolant level. c. Defective high engine temperature

6. Replace overspeed circuit board.

7. Be certain that no fault condition

exists. inside control box (refer to wiring diagram).

still lights, remove and replace engine monitor plug-in printed circuit board.

etc. After correcting fault, reset

after approximately 12-1/2 seconds if oil pressure is low.

sensor.

Disconnect lead 30 from TB11

If low oil pressure lamp

8. High engine temperature fault . lamp lights - no fault

condition exists.

9. When pressing test lamp button -

one or more fault lamps do not light.

8. Be certain that no fault condition exists.

diagram).

engine monitor plug-in printed circuit

9. Fault lamp/lamps burned out - replace.

Remove lead 31 from TB11

inside control box (refer to wiring

If high engine temperature

lamp still lights, remove and replace

board.

Engine not running.

21

NO

LOAD

OPERATION

Periods of no load operation should be held to a

minimum.

If it is necessary to keep theengine running for long periods of time when no electric output is required,

best engine performance will be obtained by connecting a "dummy" electrical load.-Such a load could consist of heater elements, etc.

OUT-OF-SERVICE

PROTECTION

Protect a set that will be out-of-service for more than

30 days as follows:

1.

Run set until thoroughly warm.

2.

Drain oil from oil base while still warm. Refill and

attach a warning tag stating oil viscosity used.

3. Remove each injector. Pour 1 ounce (two tablespoons) of rust inhibitor (orSAE#10oil) into each cylinder. Crank engine over several times. Install injectors.

4.

Service air cleaner

HIGH

TEMPERATURES

1.

See that nothing obstructs air flow to-and-from

the set.

2.

Keep cooling system clean.

3. Use correct SAE No. oil for temperature

con-

ditions.

LOW

TEMPERATURES

1.

Use correct SAE No. oil for temperature

con-

ditions. Change oil only when engine is warm.

2.

Use fresh

fuel.

Protect against moisture conden-

sation.

3. Keep fuel system-clean and batteries in a well charged condition.

4.

Partially restrict cool airflow butusecareto avoid

overheating.

5. Connect water jacket heater when set is not

running.

6. Refer to John Deere manual for further information.

5. Clean throttle linkage and protect by wrapping with a clean cloth.

6. Plug exhaust outlets to prevent entrance of

- moj stu

re,

bugs, dirt, etc.

7. Wipe-'entirexunit. Coat parts susceptible to. rust with a light ftlnrrof grease or oil."

8. Disconnect battery and follow stahdardrbatfery' storage procedure.

9. Provide a suitable cover for the entire unit.

10.

See engine operation and maintenance manual.

HIGH

ALTITUDE

Ratings apply to altitudes up to 1000 feet, standard

cooling,

normal ambients and with No. 2 Diesel

fuel.

Consult factory or nearest authorized Onan distributor for operating characteristics under other conditions.

Engine horsepower loss is approximately 3 percent lor each 1000

feet of altitude above sea level for a naturally aspirated engine. Use

lower power requirement at high altitudes to prevent smoke, over-

fueling and high temperatures.

Water Jacket Heater: The function of this optional heater is to keep the engine-warm enough to assure • startingfunder adverse weather-xondilions. Connect" the heater to a source of power that wilLbe on during

JT.

the time the engine is not running. Be sure the voltage

rating is correct for the heater element rating (Figure

19).

208 OR 240 V., 20A I 0

BLACK•

INLET |

FIGURE 19. ENGINE HEATER

LINE

• WHITE

OUTLET

-GND

' (GREEN)

22

GENERAL

Follow a definite schedule of inspection and servicing, accurate logbook of maintenance, servicing, and operating time. Use the running time meter (optional equipment) to keep a record of operation and servicing.

ditions. For continuous duty, extreme temperature, etc., service more frequently. For infrequent use, light duty, etc., service periods can be lengthened accordingly. Referto John Deere engine manual fordetails of engine service and maintenance procedures.

based on operating hours (Table 5). Keep an

Service periods outlined in Table 5 are

recommended for normal service and operating

con-

WARNING .

automatic transfer switch or associated wiring, disconnect batteries. Failure to do so could result in damage to the unit or serious personal injury in the event of inadvertent starting.

lo use a bypass filler could cause the filter material to rupture during heavy pressures on cold starts, resulting in non-filtered oil and subsequent engine damage.

^ Before commencing any maintenance work

on the engine, generator, control panel,

When changing oil filters, it is important that the replacement filter is a bypass type. Failure

TABLE

MAINTENANCE ITEMS

5.

Inspect plant Check coolant level Check oil level

Air cleaner

Fuel filter Batteries

Alternator and fan belt

Engine crankcase - drain - refill Crankcase oil filter Crankcase vent tube Valve tappets

Hoses

Injection pump - check timing

Injection nozzles

Fuel filter - change Starter

Cooling system - drain, flush,

refill

Clean and inspect battery

charging alternator

Air cleaner - replace

OPERATOR

MAINTENANCE

10 hrs. 50 hrs. 100 hrs.

X X X

xl

X

SCHEDULE

MAINTENANCE

200 hrs. 500 hrs. 1000 hrs. 6 mths.

x2 xl xl

X

PERIOD

X X X

X X X X

x3

xl - or every 3 months, perform more often in extremely dusty conditions. x2 - or every 3 months. Adjust to 3/4 depression with 20 pounds force. x3 - More often in extremely dusty conditions.

NOTE:

The above schedule is a minimum requirement for your engine.

Refer to the John Deere service manual for recommended service periods.

23

ENGINE

SPEED

Generatorfrequency is in direct ratio to enginespeed,

which is controlled by the Governor.

A Roosa-Master governor is standard equipment on

the DDB generator set. High speed and low speed

limit stops are set at the ONAN testing facility and normally do not require further adjustment, therefore if your set is used on continuous standby service, the governor may never need to be touched. If however the unit is used frequently, adjustment may be required due to wear of internal components. This adjustment is achieved by backing off the high speed stop screw. Screw in the low speed adjusting screw until the generator output frequency meter reads 60 Hz (generator on load). Turn in the high speed adjusting screw until it bottoms; secure the locknuts.

AC

GENERATOR

There are no brushes, brush springs or collector rings on these generators, therefore they require very little

servicing.

Periodic inspections, to coincide with

engine oil changes, will ensure good performance. Generator Bearing: Inspect the bearing every 1000

hours with the unit running.

If using the unit for "prime power", replace the bearing every 10,000 hours or two years. If using the set for "standby", replace the bearing every five years.

Check generator voltage. It may be necessary to make a slight readjustment of the voltage rheostat to obtain the preferred voltage at average

load.

IDLE ADJUSTING

SCREW

B248-I

FIGURE 20. ROOSA-MASTER GOVERNOR

INJECTION PUMP

HIGH SPEED

ADJUSTING SCREW

SENSITIVITY

(DROOP)

ADJUSTMENT

Governor sensitivity is adjusted by rotating an exter-

nal knurled knob at the rear of the injector pump

housing.

Turning inward (clockwise) shortens gover-

nor control spring making it less sensitive, thereby increasing speed droop. Turning outward (counterclockwise) has opposite effect. Adjustment can be

made with engine running. The speed droop is set at the ONAN plant to give a regulation of 3 percent to 5

percent from no-load to full-load. When using the generatorfrequency meter to deter-

mine engine speed, multiply frequency by 30 to calculate engine speed.

Example: 30 x 61 (Hz) = 1830 rpm.

INSPECTION

AND

CLEANING

When inspecting the rotating rectifier assembly,

make sure diodes are free of dust, dirt and grease. Excessive foreign matter on these diodes and heat

sinks will cause the diodes to overheat and will result

in their failure. Blow out the assembly periodically,

with filtered, low pressure air. Also check to see that

diodes and leadwires are properly torqued. The diodes should be torqued to 30 in. Ib. or finger tight plus a quarter

turn.

Blow dust out of control panel.

BATTERIES

Check the condition of the starting batteries at least every two weeks. See that connections are clean and tight. A light coating of non-conductive grease will

retard corrosion at terminals. Keep electrolyte at the proper level above the plates by adding distilled

water. Check specific gravity, recharge if below

CONNECTIONS

(Fuel,

Exhaust,

etc.)

Operator should periodically make a complete visual inspection of the set while running at rated Some of the things to check for are as follows:

1.

Check all fuel and oil lines for possible leakage.

2.

Inspect exhaust lines and mufflers for possible

leakage and cracks.

3. Periodically or daily, drain moisturefrom condensation traps.

4.

Inspect water lines and connections for leaks and

security.

5. Inspect electrical wires and connections for

security and fray damage.

1.280.

load.

Adjust engine speed to 1800 rpmfor60 Hertz sets and 1500 rpm for 50 Hertz sets.

If generator requires major repair orservicing, contact an authoriz-

ed Onan dealer or distributor.

24

This catalog applies list

and

have Onan part numbers. These supersede similar parts listed arranged Model

in

groups

and

Specification from theyOnan nameplate, select

to

the

DDB generator sets listed below. Engine parts modified oradded

of

related items

and are

identified

by a

in

the

John Deere manual. Onan parts

reference.

the

parts from this catalog that apply

All

part illustrations

by

Onan will

are

typical. Using

to

be in

this

are

the

your set. - -

INSTRUCTIONS

ONAN PARTS

'

All

j please refer

- 1 complete MODEL, SPECIFICATION,

parts

in

this list

are

Onan parts.

For service, contact thedealerfrom whom ybu purchased this equipment station.

To

or

your nearest •authorized service

avoid errors

to the

Onan nameplate

or

delay

in

filling your order,

NUMBER.

MODEL

AND

SPECIFICATION* WATTS

50.0DDB-15R/* 50,000

50.0DDB-9XR/*

,.

40.0DDB-515R/* 40,000

FOR

Onan parts

and

give

and

SERIAL

50,000

ORDERING

or

the

REPAIR

MODEL

SERIAL

IllDnOTftklT ALWAYS GIVE ABOVE NOS. Imr UK I AH I "WHEN ORDERING PARTS

PARTS

ELECTRIC

GEN SET

H^HHHIH^HIIIH

NO.

||^H||^HH|^^^B

MANUFACTURED

BT •

ONAN

DIV.

OF

STUDEBAKER CORPORATION

MINNEAPOUS, MINN. 55432.

FOR ELECT. EQUIPMENT ONlY^Cfr

99A10S4

U.S.A.

>^

, " .

4-

-

The

Specification Letter advances

- Refer

to

Specifications Section (Generator Details)

(A to B, B to C,

JOHN DEERE PARTS

All John Deere parts must

be

ordered from your nearest authorized John Deere distributor. When ordering parts, refer giving

the

complete engine TYPE

to the

John Deere nameplate

and

SERIAL

NUMBER.

etc.)

with manufacturing changes.

in

Operator's Manual

JOHN

25

TYPE

for

Electrical Data.

DEERE

SERIAL

MISCELLANEOUS ENGINE PARTS GROUP

53

54-

52

1 3

1

8

55

43-

ff- 42

=2>-^ 27 .-

28

1=

5-6

1

50 51

26

REF.

PART

NO. NO.

1

193-0108 193-0104

2

309-0179

3

QTY.

USED

4 309-0169 5 505-0131

6 505-0019

104-0371

8

104-0858

9-

800-0094

10

503-0098

12

503-0197

13 14

•

505-0100

504-0011

15

505-0185

16

502-0058

18

.19

232-2183 312-0058

^20

191-0665

21-

22

191-1098

332-1292

25 .

505-0050

-

26

-27- . CABLE, BATTERY ,4i16-0531

416-0530

•

.28 -416-0446

PART

DESCRIPTION

Sender,

Oil

Pressure Gauge

Sender, Water Temperature

REF.

NO.

30

PART

NO.

338-0772

31 191-0725

QTY.

USED

1 1

PART

DESCRIPTION

Harness, Wiring - Engine Guard,

Alternator Belt

Gauge

Switch,

High Water Temperature 33 191-1097

Switch,

Bushing

Low Oil

(3/4 x

Pressure 34

191-0732

3/8"), Alternator)

Reducer 35 800-0026

Bushing

(1/2 x

Reducer

3/8"),

36 856-0008

1

Motor,

1 1

Starting

Regulator, Voltage (Part Screw (5/16-18

Terminal Bracket Mounting

1

Washer (5/16"), Shakeproof

PIT

x 3/4") -

Flywheel (Includes Ring Gear) Gear,

Ring 38 140-1091

Screw (1/2-13

x 2") -

Flywheel Mounting

Hose.

Oil

Clamp,

Drain 41 140-1089

Oil

Drain 42 800-0090

Nipple (1/2"), Close

-

39 503-0597 40 503-0648

Oil Drain 43 856-0013

Valve,

Oil

Nipple Tee (1/8")

Spacer, Alternator Mounting Condenser.-Alternator

Drain EIT

(1/2 x

Half

- Oil

Drain

- Oil

and Switch

1-1/2"),

Sender

...

47 SCREW, ALTERNATOR MOUNTING

800-0030 800-0024:

48

850-0045

49

526-0115

50 800-0051

.

•

-1

1 2 1 1

1

•

1

2 2

-i 3.*-

Cleaner, Hose, Clamp,

Element,

Screw (1/2-13

Air

(Includes Element)

Air

Cleaner

Air

Cleaner Hose

Air

Cleaner

Battery Cable

x 1") -

to

Ground

Washer (1/2"), Shakeproof

5/16-18 x 1-1/4" 5/16-18x1/2" Washer (5/16"), Lock

. Washer (5/16"), Flat Screw (3/8-16 x 1-1/4")

Alternator, Charge (Includes Starter Motor Mounting

Fan) Pulley, Alternator Bracket, Terminal Mounting Elbow

(1/2 x

Oil Drain

..

.... .

":.•:•-••„

Positive

(24")

Negative

(T6") •. • :- -..=.

90°), Street

'

- •"

.

51 850-0050

52,

309-01.78. -I-

"

•

-53 309-0064

•.

.,:,5.4;--

-309-0269

...55 193-0202

CabiferiBattery Jumper . Optional

-V:-

-

t

r

3.

.

.:

.' 1 •

'Washer (3/8"). Lock

Switch,

High WaterTempe'rature

Alarm - Optional'

Low Oil

PressuVe

'•

- .

- Switch, Shutdown - Optional

•••Switch -Low Engine Temperature-

- Optional

-1-

•

„Sender,

Oil

Temperature

" "

of

•

- r '

- "

27

-2

COOLING

SYSTEM

GROUP

(Radiator Cooled Generator

Sets)

REF.

NO.

• ' 4

10

11 870-0113 8 Nut (5/16-18), Retainer - 12

13 14 800-0050

15 850-0050 4 Washer (3/8"), Lock

PART

NO.

130-0713

1

130-0449

2

504-0028 1 Valve,-Radiator Drain

3

130-0352

5

130-0351 503-0722

6 7 503-0365

503-0723

8

815-0181 8

9

821-0014 8 Screw (5/16-18 x

405-1054 1 Flange, Radiator - Optional 130-0605

QTY.

USED

1

Radiator .

1

Cap,

Radiator .

1

Guard,

1

Guard,

1

Hose,

4 Clamp, Hose

:

1

4

Lower Radiator c

Hose,

Upper Radiator,

Screw (10-32 x

Fan Guard Mounting Self Locking - Radiator

Mounting Radiator Mounting

Blade, Screw (3/8-16 x 1") -

Fan Mounting

PART

DESCRIPTION

Fan - Right Hand Fan - Left Hand

1/2")-

Fan

1/2"),

28

179-1521

MUFFLER

INSTALLATION

1

O- I i- 1 2

REF.

NO. NO.

.8 ;••

IP 11 ; 850-0045 .10 12 800-0026 ' 6 13 800-0028 14

PART QTY.

1

155-1268 140-0649

2 3 155-1340 4

155-0789 5 505-0172 6 505-0454. 7

.155-11.12 •

; 505-0175 ;

9: 526-0172

862-0015

505-0,111.'

•

'•:.

USED

1 2 1 2 1 1 1 1

4

10

4

r

-i.

PART

DESCRIPTION

Muffler

Band,

Muffler

Shield,

Heat Support Nipple (2"), Close Union (2") Tube,

Exhaust

Elbow (2" x 90;°),

• Pipe Spacer. Nut (5/16-18) Washer (5/16"), Lock Screw (5/16-18 x 3/4") Screw (5/16-18.x 1") Coupling :(2-.r/2 x 2")

*

, Reducer

r

29

MOUNTING AND

HOUSING

12

GROUP

12,

26

26.

12

-60

14

16

15

34

A

12

42

4

6—*

20

Q-21

=5^4

^.

6

40

30

REF.

NO. NO.

10 406-0089 11 12 821-0014

13 405-2150

14 405-1409 15 403-0896

16

17 18 19 405-1776 Support, Housing Center

20 21 508-0001

22 403-1110 23 402-0030

24

25

26

27

28

PART

1

403-1112

2

403-0894

3

405-2158

4

403-0895

405-1804 4

5

6 406-0105 7

405-2153 405-1777

8

9 406-0157

405-2159

403-0897

4 1 6704 80 520-0663

337-0090

301-3155

PANEL. CONTROL 301-3156 301-3156 821-0010

301-3154

821-0016 4

-

QTY.

USED

As

Req.

As

Req.

PART

DESCRIPTION

Chassis, Front Mounting

1 1

Chassis, Rear Mounting

1

2

8

1 1

1

1 1

1

1 1

1

1 1

1 1 1

BOX

3 2

1

Housed Sets

Panel,

Rear Housing Access

Housed Sets

Cover, Conduit Opening

Housed Sets

Panel (Side), Door - Housed

Sets Clamp, Door - Housed Sets Panel,

Top - Housed Sets

Panel,

Rear Door - Housed

Sets

Handle (Includes Keys), Door

Housed Sets

Catch,

Door - Housed Sets

Panel,

Rear - Housed Sets

Screw (5/16-18 x 1/2"),

Self Locking Panel,

Front - Radiator

Cooled Sets Extension Trim,

Right Hand Chassis

Unhoused Sets Trim,

Left Hand Chassis

Unhoused Sets Frame, Battery Hold-down Stud,

Battery Hold-down

Housed Sets Strap,

Ground

Grommet, Control

'

(2

used

on Support, Engine Mount Mount, Vibration Housing,

Unhoused Sets

HOUSING Unhoused Sets Housed Sets Screw (1/4-20 x 1/2"),

Self Locking

Saddle, Control

Unhoused Sets

Screw (5/16-18 x 3/4"),

Self Locking - Housed Sets

Housed Models)

Control

Box

Housing

-

Housing

-

REF.

NO.

29 30

31 32

33 34 35

36 37

-

38 39

40

41 42 43

44

45 800-0091

46

47 49

50

51 52

53 54 55 56

-

57 301-3191 58 234-0369 59 301-3195

60

301-3196

61

159-1025

62 159-0020

PART

NO.

USED

809-0059

870-0106

800-0048 850-0050 870-0113

As Req.

870-0020 800-0003

526-0018 850-0040 862-0001 800-0520

800-0090

850-0060 862-0016 800-0132

800-0095

856-0013

850-0070 813-0098

850-0030

870-0053 16 815-0026 As Req.

853-0008 526-0115 850-0045 865-0007

As Req.

QTY.

Screw

(#14 x

Locking - Housed Sets Nut (#14), Speed Screw (3/8-16

Housed Sets

Washer

Housed Sets

Nut (5/16-18), Retainer

6

Nut (5/16-18)

4

Screw (1/4-20

Unhoused Sets

Washer

(1/4"),

Washer

(1/4"), Nut (1/4-20), Screw (3/4-10

Vibration Mount

Screw (1/2-13

Vibration Mount

5 5 2

2

1

2

22

22 Washer (#10),'-Lock

2 2 2

1 1

1

1 1 1

Strap Washer (1/2"), Lock Nut (1/2-13), Screw (5/8-11 x 1-1/2")

Engine Mount Support

Screw (1/2-13 x 2-1/4")

Engine Mount Support.

Screw (1/2-13 x 1-1/4")

Ground Strap

Washer (1/2"), Shakeproof

EIT

• Washer (5/8"), Lock Screw (10-32 x 3/8")

Housed Sets

Nut (10-32) - Housed Sets

Screw (10-32 x 3/8"),

Truss Head - Control

Panel Mounting Washer (#10), Shakeproof Washer (5/16"), Flat Washer (5/16"), Lock Nut (5/16-18), Wing - Battery

Hold-down Stud Box, Junction - Housed Sets Cover,

End

Plate,

Junction

Housed Sets Bracket, Junction Tank, Fuel - Housed Sets Cap,

Fuel Tank

PART

DESCRIPTION

1/2"),

x 3/4") -

(3/8").

Lock

x 1/2") -

Flat Lock

Hex

x 1") -

Hex

Bell - Housed Sets

Box

Self

to

and

-

Bottom

Box

-

Support

Ground

-

Box

E T

-

31

32

REF.

NO.

10 300-0003 1 11 332-1276 2

12

13 •

14 15 16

PART

NO.

PANEL ONLY. ENGINE CONTROL

1

301-3165 1 301-3267 1

2

301-3253 1 SWITCH (S.P.D.T.).

3

308-0138 1 308-0327 1

4

308-0002 1

193-0107 1 Gauge. Oil Pressure

5

193-0106 1

6 7 302-0061 1 8 332-1239 1

332-1241 1

9

307-1058 2

307-1031 1 322-0149. 1 322-0004 1

LAMP.

FAULT 322-0128 1 322-0107 . 1 322-0111 1 322-0108 1 322-0109 1

322-0110 1

QTY.

USED

Sets With One Fault Light Sets With Five Fault Lights -

Optional

Bracket. Engine Control

TOGGLE

Standard Units Penn State Units - Optional

Switch,

Gauge. Water Temperature Ammeter, Charge (30-0r30) Strip.

Marker (B+, Remote.

Ground Alarm)

Strip,

Marker (21 through 36)

Plate,

Switch (On-Off)

Plug,

Keying (Sets With

Five Fault Lights Use

Quantity of 1)

Relay (1) Start Disconnect,

(1)

Ignition Relay, Start Solenoid Holder. Lamp Lamp,

Panel

Standard Sets Overcrank (Optional) Overspeed.(Optional) Low Oil Pressure.(Oplional) High Engine TDmpcraluie

(Optional) • •

Low Engine Temperalure. . .

(Optional)

PART

DESCRIPTION

Panel Light

REF.

NO.

17

18

19

20 21 22 23

24 332-0051

27 28 29 30

31 32

33

34

PART

NO.

CONTROL. CRANKER 300-0733 300-0714

MONITOR

300-0679

300-0730

300-0681

HARNESS ASSEMBLY, WIRING-CONTROL (Includes Parts Marked

338-0528

338-0534

332-0537

332-0795 323-0765 332-1271 2 .•

323-0764 332-1269 332-1280 332-1043

307-1061 332-0699

33?-1?40

307-1157

QTY.

USED

1 Standard Cranker

Cycle Cranker (Optional)

1

ENGINECONTROL

As Req. As Req.

Sets With One Fault Light -

1

1 1 • 2

1 1

1 -

1 1

1

3

Standard

Sets With One Fault Light -

Penn Slate Units - Optional

Sets With Five Fault Lights -

Optional

•)

Sets With One Fault Light -

Standard

Sets With Five Fault Lights -

Optional 'Block, Terminal - 4 Place 'Block, Terminal - 16 Place 'Socket, Relay - 11 Place 'Housing,

• Board Terminal Clip,

Tinnerman

'Socket, Relay - 8 Place

'Terminal. 'Terminal,

'Jumper, Terminal - Sets With

One Fault Light

Relay. Starter Protection

'Block, Terminal (6'Place) -

Sets With Five Fault Lights

•Strip.

Marker (53 through 58)

Sets With Five Fault Lights

Spring,

Relay Hold-down

PART

DESCRIPTION

Printed Circuit

PC Board' Crimp

- Included in Wiring Harness Assembly.

33

CONTROL GROUP (AC OUTPUT PORTION)

0 . IC

HMIIi

|)0

34

1 301-3158

2 PANEL, CONTROL BOX

301-3170

301-

1 Box,

3168 337-0049 402-0078 508-0001 302-

0718

• AMMETER, 302-0721

302-0720

• METER, FREQUENCY

302-0221 302-0256

9 •METER,RUNNINGTIME

302-0466 302-0469

10

SWITCH,

308-0012 308-0284

303-0076

11

322-0131

13

322-0130

14

307-1061

15

301-3244

16

315-0384

17

307-1157

18

303-0170

19

303-0032

20

350-0556

21

315-0342

22

305-0524

23

332-1268

24

AC

1

1 1

SELECTOR

1

Control

Sets With Meter Panel Sets Without Meter Panel Strap,

Bond

Dampener, Vibration Grommet (1-1/16"), Rubber Voltmeter,

0-300,

50.0KW - Dual Scale 0-150,

0-300

40.0KW - Dual Scale 0-100,

0-200

60 Hertz 50 Hertz

Voltmeter - Sets Without

Meter Panel

Voltmeter

With Meter Panel

. Knob, Selector Switch

Light, Upper Scale Light, Lower Scale Relay, Voltage Selector Bracket, Relay Mounting Reactor Assembly, Commutator Spring, Rheostat, Voltage Adjusting Knob,

•Resistor Transformer, Voltage Bridge, Rectifier Board Assembly, Printed

Circuit - Voltage Regulator

AC -

Dual Scale

0-600

and

Ammeter - Sets

Relay Hold-down

Rheostat

25 STRIP, MARKER

332-1248 332-1242 1

27 HARNESS, WIRING-

Marked

*) 338-0764 1 Sets Without Meter Panel 338-0730

29 320-0431 32 320-0307 1 Lock, Circuit Breaker

33 406-0332 2 Receptacle, Fastener 34 406-0333

406-0334 2 Washer, Stud Fastener

35 36 332-0050

'BLOCK, TERMINAL

38

332-0607 332-0795 1 323-0764 1 "Socket, Relay

39 40 332-1280 As Req. 'Terminal, Crimp

• TRANSFORMER, CURRENT

41

302-0107 3 50.0KW Units 302-0106

42 302-0729 43 302-0235

44 302-0236 45 302-0253

46 813-0110 6 47

854-0010

232-2219

48

Units With Meter Panel Only.

Included

As Req.*Shim, Transformer Mounting

in

Wiring Harness Assembly.

(H2-H6, 61-67) - Sets Without

1

1 Sets With Meter Panel 1

2 1 1 12 Place - Sets Without

3 1 • Bracket, Transformer Mounting 3

3 • Clamp, Transformer Mounting

6

1

Meter Panel

(H2-H6, 61-71) - Sets With

Meter Panel

AC CONTROL (Includes Parts

Breaker

(2

(Exciter) Handle (Penn State

Models) - Optional Stud, Clip,

Meter Panel 16 Place - Sets With

Meter Panel

40.0KW Units

• Clamp, Transformer Mounting

- Upper

- Lower

•Screw (10-32 Round Head

•Washer (#10), Shakeproof

Filter Assembly

Switched Loads) - Optional

Amp), Circuit

Fastener

Tinnerman

x 2"),

(For SCR

*. •

IT

35

REF.

NO.

6

7 805-0018 8 150-0717

9 211-0185 10 234-0365 11 232-2106 12 850-0079 13 232-2078 14 234-0370

15 234-0361 16 509-0125

17 526-0238 18 800-0513 19 STUD, GENERATOR

20 150-1456 1

PART

NO.

205-0089 510-0101

805-0033

QTY.

USED

526-0259

520-0721 4 520-0724 4

• Blower

• Bearing

• Bolt, Place - Drive Disc to

• Washer (5/8")

•Washer (3/4"), Lock

•

Disc,

•Washer, Bearing Retainer

•Screw, Bearing Retainer

THROUGH

PART

DESCRIPTION

Rotor Assembly, Wound

(Includes Parts Marked •)

Stator Assembly, Wound

Hub

Bolt, Place - Drive Disc to

Engine

Switch Assembly, Overspeed

Bell,

End

Screen,

Generator

Bracket, Generator Mounting

Generator Drive

Grille,

Generator Air Inlet -

Unhoused Sets

Wrapper, Generator End Bell

Unhoused Sets

Seal,

O-Ring

Three Phase Sets Single Phase Sets Bracket and Point Assembly,

Overspeed Switch

"

- Bearing

REF.

NO.

21 800-0003 22 850-0040 8 Washer (1/4"), Lock

23 800-0008 24 800-0009 4 Screw (1/4-20 x 25 862-0001 26 812-0189

27 856-0010 28 862-0011 29 850-0050

30 503-0611 31 201-1739

32 RECTIFIER

33 HEATSINK

34 870-0053 35 850-0030

PART

NO.

358-0015 358-0016

363-0055 363-0054

QTY.

USED

Screw (1/4-20 x

2

1 Screw (3/8-16 x 3/4"),

1

4 Nut (3/8-16) - Generator 4 Washer (3/8")

4 Hose, Insulator 1 * Rotor Assembly, Wound -

DIODE (Part of Exciter Rotor)

3 3

DIODE

1 1 6 6

Bracket Mounting

Screw (1/4-20 x

Screen Mounting Stator Mounting

Nut (1/4-20) - Generator

Screen

Round Head - Overspeed

Switch Mounting

Washer (3/8"), Shakeproof

EIT Through Stud

Exciter (Includes Diodes)

Negative Positive

Negative Positive Nut (10-32) - Diode Mounting

Washer (#10) - Diode Mounting

PART

DESCRIPTION

1-1/4")

1-1/4") 1-1/2")

-

36

REF.

NO.

36 813-0110 37 526-0140 4 Washer (#10) 51 850-0060 4

38 332-0050 39 508-0124 4 40 508-0156 4 Washer, Insulating 41 42 . 87,0-0053 4 Nut (10-32) - Heat Sink 54 800-0071 4 Screw (7/16-14 x 1") -

43 220-2353

44 45 515-0145' 46

47 850-0050 8 Washer (3/8"), Lock 48

49 850-0040 4 Washer (1/4"), Lock

PART

NO.

850-0030

232-2102 800-0051.

812-0146

QTY.

USED

4 Screw (10-32 x 2"), Round

2

4 Washer (#10)

1 Stator Assembly, Wound -

. 1 • Spacer, Bearing 56 231-0188 1

1 • Key, Exciter Rotor 57 802-0072 12 8 Screw (3/8-16 x

4 . Screw (1/4-20 x 3/8"),

Head - Heat Sink Mounting

Clip,

Wire

Bushing,

Mounting Exciter - 55

Stator Assembly to Generator Adapter 58 850-0050 12

Round Head. - Air Inlet Grille Mounting

PART

DESCRIPTION

Insulating 53

1-1/4")

- Socket Head - Generator

REF.

NO.

50 800-0091

52

• -

PART

NO.

402-0030 800-0520

850-0055

Refer to factory giving complete Model, Spec and

* _

Serial Number from the Onan Nameplate:

Included in Wound Rotor Assembly.

QTY.

USED

4

2 2-

.4

Screw (1/2-13 x

Generator Support to Chassis Washer (1/2"), Lock Mount, Vibration Screw (3/4-10 x 1") -

Vibration Mount to Stator Assembly

Generator Support to

Vibration Mount Washer (7/16"), Lock Adapter, Generator Screw (3/8-16 x 1"), .

Adapter to Engine Washer (3/8"), Lock

PART

DESCRIPTION

1-1/4")

-

37

179-2022

15-16-17

WATER

JACKET

HEATER

INSTALLATION - 120

VOLT

REF.

NO.

1 1 2 856-0013 1 Washer (1/2"), Shakeproof

3 850-0060 1 4 800-0088 1 5 333-0052 1

6

7 1 8 502-0054 1 Elbow, Street

9 10 11 812-0076 2

12 850-0025 2

13 309-0285 1

14 15 520-0446 2

16 850-0030 2 17 870-0053 2 18 19 333-0012 1

PART QTY.

NO.

503-0183 4

508-0008

333-0013

332-0149

USED

PART

DESCRIPTION

Hose (Order 15" of Bulk Hose

#503-0386)

EIT Washer (1/2"), Lock Screw (1/2-13x3/4")

Heater, 1500 Watt Clamp, Hose Hose (Order 6" of Bulk

Hose #503-0386)

1

Grommet

2

Screw (Partof #13) Screw (#8-32) Washer (#8), Lock Thermostat

1

Cover, Thermostat Mounting

Box Stud (#10-32) Washer (#10), Lock Nut (#10-32)

1 Terminal

Box, Thermostat Mounting

38

179-2025

15-16-17

WATER

JACKET

HEATER

INSTALLATION - 240

2-3-4

VOLT

REF.

NO. NO.

10 2 Screw (Part of #13) 11 812-0076 2 Screw (#8-32) 12 850-0025 13 14

15 16 850-0030 2 Washer (#10), Lock 17

18

19 333-0057 1

PART QTY.

1 2 856-0013 1 Washer (1/2"), Shakeproof

3 850-0060 4

800-0088 5 333-0073 1 Heater, 2000 Watt 6 503-0183 7 1 Hose (Order 6" of Bulk

8 502-0054

508-0008

9

309-0256

333-0056

332-0672

870-0053

332-0149 1 Terminal

USED

1

Hose (Order 15" of Bulk Hose

#503-0386)

1 1 Screw (1/2-13 x 3/4")

4 Clamp, Hose

1 1

2

T Thermostat

1 Cover, Thermostat Mounting 2 Stud (#10-32) 2 Nut (#10-32)

EIT

Washer (1/2"), Lock

Hose #503-0386) Elbow, Street Grommet

Washer (#8), Lock

Box

Box, Thermostat Mounting

PART

DESCRIPTION

39

We

purchased

factory in Minneapolis it took with it our sincere

ance

plate.

performance, certified performance.

man it.

and this certificate with the Onan electric plant you

proves we mean it! When this plant

that it will produce exactly as stated on its name-

The

name of ONAN is synonymous with satisfactory

left

assur-

our

-mm

•....

^mmmmm^^-

±

ONAN

1400 73RO

AVENUE

N.E. • MINNEAPOLIS, MINNESOTA 55432

A DIVISION OF ONAN CORPORATION