GMC 1976 ZEO 6083 Bedienungsanleitung

X-7525

SECTION INDEX

General

Information,

Periodic

Maintenance

and

Lubrication

Body, Heating

and

Air

Conditioning

1975

AND

1976

Frame

MAINTENANCE

MANUAL

Front

Suspension

and

Final

Drive

MOTOR

HOME

Rear

Suspension

ZEO

6581

Brakes

Engine

AND

Engine

Cooling

System

TRANS

MODES

Engine

Fuel

System

Emission

ZEO

6083

Control

Systems

Engine

ZEO

6583

Electrical

Transmission

Fuel

Tank

and

Exhaust

Steering

System

Wheels

and

Tires

Chassis

Electrical

TRUCK

COACH

DIVISION

Radiator

and

Coolant

GENERAL

MOTORS

CORPORATION

Recovery

System

RONTIAC,

MICHIGAN

48053

Bumpers

eneral

Motors

Corporation,

1975

Printed

.S .A

Miscellaneous

GMC

Living

Area

X-7525,

Facilities

ALPHABETICAL

INDEX

WIRING

DIAGRAMS

SECTION

GENERAL

INFORMATION,

PERIODIC

MAINTENANCE,

AND

LUBRICATION

order

that

the vehicle

may

specifically

iden-

GENERAL

MOTORS

CORPORATION

WARRANTY

MAY

BE VOIDED

WEIGHT

EXCEEDS

ANY

RATINGS

SHOWN

GROSS

VEHICLE

WEIGHTINCLUDESWEIGHTOFBASE

VEHICLE,ALL

ADDEDEQUIPMENT,

DRIVER

AND

PASSENGERS,

AND

ALL

PROPERTY

LOADED

INTO

ONTO

VEHICLE

RATINGS

POUNDS

MANUFACTURED

GROSS

VEHICLE

WEIGHT

FOR

THIS VEHICLE

MAXIMUM

FRONT

END

WEIGHT AT

GROUND

MAXIMUM

REAR

END

WEIGHT

ATGROUND

VEHICLE

IDENTIFICATION

A-3688

Figure

1-Vehicle

Identification

Plate

VEHICLE

IDENTIFIC

ATION

GENERAL

INFORMATION



0- 1

Contents Of

This

Section

Are

Listed

Below

SUBJECT



PAGE

Vehicle

Identification

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Component

Identification

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0-2

Hoisting

Instructions

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0-3

Jack

Usage

Instructions

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0-3

Towing

Vehicle

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.0-4

Engine,

Chassis,

and

Body

Maintenance

Schedule

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0-6

Explanation

Maintenance

Schedule

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0-7

Recommended

Fluids

and

Lubricants

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.0-11

Lubrication

Details

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0-12

Winterization

and

Vehicle Storage

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0-16

The

Vehicle

Identification

and

Weight

Rating



tified

as to

manufacturer,

engine

type,

year

manu-

Plate

(figure

located

behind

the

right front access



facture,

etc

refer

Figure

door

shows

the

"Vehicle

Identification

Number",

and

the

"As

Manufactured"Gross

Vehicle

Weight

Rating

for the vehicle to

which

it is

attached

(TYPICAL

IDENTIFICATION

NUMBER

TZE335V100053)

MODEL

DESIGNATION

Model

Code



Vehicle



Length



GMC

MotorHome



26'



TransMode



23'

TransMode

26'

MFD

GMC

ENGINE

TYPE

E-VS

Gasoline

Figure

2-Vehicle

Identification

Number



GENERAL

INFORMATION

COMPONENT

IDENTIFICATION

ENGINE

The

engines

are

identified

code

tape

installed

directly

above

the

engine

serial

number

which

stamped

the

engine

oil

fill

tube

(figure

Figure

3-Engine

Identification

TRANSMISSION

The

transmission

model and

code

numbers

are

stamped

the

converter

housing

shown

Fig-

ure

FINAL

DRIVE

The

ratio

and

date

codes

-are

stamped

the

flange

near

the

right

hand

spreader

hole as

shown

Figure

Date

Code

The

code

letter

for

the

month

and

the

number(s)

are for actual

date

Ratio

Code

"T"

.07



EXAMPLE

A12

.07

:1,

built

January

9th

month,

not

used)

twin

post hoist

sufficient

capacity

and

with

proper

adapters

and/or

fittings

must

used

Front

hoisting position

the front

engine

cross-

member

HOISTING

INSTRUCTIONS

Figure

4-Transmission

Serial

Number

Plate

Figure

5-Final

Drive

Identification

Rear

hoisting

must

done

the rear

suspension

brackets

"I"

beam

type

adapter

used

should

be approximately 82

inches

length to gain

adequate

support

suspension

brackets

(figure

vehicle

placed

jack

stands

for

maintenance

repairs,

the

hoisting

points

should

used

CAUTION

help

avoid

serious

damage

your

vehicle,

the

vehicle

should

raised

onlyon

twinpost

hoists

000

pounds

total

rated

capacity,

the

suspension

points

noted

(see

diagram)

Before

raising,

check

overhead

clearance

see

that

sufficient

for the

vehicle

NOT

use the

vehicle

jack

for

hoisting

maintenance

designed

for use

only

when

changing

tires

CAUTIONS

jacking

instructions

order

reduce

the

possibility

serious

personal

injury

The

jack

designed

for

use

only

when

chang-

ing

wheels

Never

get

beneath

the vehicle

when

using

jack

not

start

run

engine

while

vehicle

jack



Figure

7-Jacking

Front

Vehicle

GENERAL

INFORMATION



FRONT

ENGINE



REAR SUSPENSION

CROSSMEMBER



BRACKETS

DENOTES

APPROVED

LIFTING

POINTS

A-1941

Figure

6-Vehicle

Hoisting

Points

JACK

USAGE

INSTRUCTIONS

Park on

level

surface

and

set

parking

brake

firmly

Set

transmission

"PARK"

Activate

Hazard

Warning

Flasher

Jack,

jack

chain,

handle,

"jacking

pad"

(wooden

block),

and

lug

wrench

are located

under

dinette

seat

Figure

8-Jacking

Rear

Vehicle



GENERAL

INFORMATION

Block

both

front

and

rear

the

wheel

diagon-

ally

opposite

the

jack

position

Loosen

but

not

remove

wheel

nuts

JACKING

FRONT-Place

hydraulic

jack

wood

block

near

energy absorbing

front

bumper

bracket

Place

hook

flange

front

cross-member

Pass

chain

under

bumper

and

adjust

chain

length

snug

fit

fork

top

jack

(See

figure

JACKING

REAR-Place

hydraulicjack

wood

block

rear

suspension

bracket

(See

figure

The

hook

placed

the

drainage

slot

under

bracket

Adjust

chain

length so

link

will

fit

fork

top

jack

TOWING

FRONT

TOWING

Proper

lifting

and

towing

equipment

necessary

prevent

damage

to the

vehicle

during

any

towing

operation

State (Provincial

Canada)

and

local

laws

applicable to

vehicles

tow

must

followed

towing

operation

should

attempted

which

would

jeopardize

the

safety

the

wrecker

operator,

any

bystanders

other

motorists

Passengers

should

never

ride in

towed

vehicle

for

any

reason

NOTE

Since

the

vehicle

could

exceed

the

lift

and

GVW

capacity of

most

sling

type

equip-

ment,

heavier

equipment

such

chains

and

spreader

bar

should

used

Also,

wrecker

with

least

8,000

lbs

capacity

shouldbeused

Vehicle

may

towed

all

six

wheels,

speeds

less

than 35

MPH,

for

distances

miles,

provided

the

final

drive,

axle,

transmission,

and

steering

system

are

otherwise

normally

operable

Use

only

towing

equipment

specifically

designed

for

this

purpose

following

the

instructions

the

towing

equipment

manufacturer

separate

safety

chain

system

must

used

For

suchtowing

the

steering

must

unlocked,

transmission

neutral

and

the

parking

brake

released

Attachments

must

en-

gine front

crossmember

not

attach

bumpers

associated

brackets

Remember

that

power

brakes

and

power

steering

assists

will

not

available

when

engine

inoperative

When

towing

the

vehicle the

air

bellows

the

dle

TOWING

VEHICLE

valve

base

jack

and

insert

jack han-

Always

operate

jack with

slow,

smooth

motion

Raise

vehicle so

tire

just

clears

surface,

replace

wheel

and

slightly

tighten

wheel

nuts

Open

valve

base

jack

lower,

then

fully

tighten

wheel

nuts

Proper

torque

250

foot

pounds

CAUTION

Use

lug

wrench

provided

tighten

wheel

nuts

securely

torque

wrench

not

available

(Follow

the

nut

tightening

sequence

shown

WHEELSAND

TIRES,

Section

10 of

this

manual

the

earliest

opportunity

have

wheel nut

torque

checked

This

necessary

help

prevent

loosening

stripping

the

wheel

nuts

rear

suspension

should be

inflated

maximum

capacity

and

then

place the

power

level

controls

"HOLD"

(vehicles

with

power

level

option)

vehicles

without

the

power

level

option,

disconnect

the

height control

valve

link

(figure

each

side

of the vehicle

Raise

the

arm

on each

height

control

valve

inflate

the

air

bellows

provide

maximum

ground

clearance

for

the

vehicle

The

leveling

valve

can

then

released

the neutral

position

Tow

chains

should

attached

engine

front

crossmem-

her

(See

figure

10)

Note

that

six

inch

length

wood

block

must

placed

top

theengine

Figure

9-Disconnecting

Height

Control

Valve

Link

front

crossmember

the

left

side

The

chain

should

then

attached

around

both

the

wood

block

and

the

engine

front

crossmember

Care

should

taken

that

the

chain

does

not

contact

the

fuel line

the

engine

front

crossmember

Figure

1-Spacer

Block

Assembly

Figure

10-Towing

Vehicle

GENERAL

INFORMATION



CAUTION

the

six

inch

length

wood

block

not

installed,

the

towing

chain

could

sever

the

fuel line

theengine

front

crossmem-

ber

wood

spacer

block

assembly

should

placed

under

the

front

crossmember

(See

figure

10) to

re-

lieve

some

the

load

from

the

energy

absorbers

and

bumper

This

spacer

block

assemblyshould

di-

mensioned,

constructed

hardwood,

and

bolted

together

with

three

thru-bolts

shown

Figure

Raising

front of

vehicle

so front

wheels

are

four

inches off

the

ground

will

provide

about

five-inch

ground

clearance

the

rear

when

towing

Separate

safety

chains should

attached

lower

control

arms

TOWING

ATREAR

not

recommended

that

vehicle

towed

with

the rear

raised

this

could

result in

suspension

crossmember

damage

ENGINE,

CHASSIS,

AND

BODY

MAINTENANCE

SCHEDULE

LUBE

AND

GENERAL

MAINTENANCE



GENERAL

INFORMATION

SAFETY

MAINTENANCE

EMISSION

CONTROL

MAINTENANCE

(1974

CERTIFIED

ENGINE)*

WHEN

PERFORM

SERVICES

(Months

or Miles,

Whichever

Occurs

First)

Item

SERVICES

(For

Details,

See

Numbered

Paragraphs)

Every 3

months

3,000

miles

Chassis

Lubrication

Engine

Oil

Change

Every 6

months

6,000

miles

Fluid

Levels

Check

Air

Conditioning

System

Check

Air

Compressor

Air

Filter

Clean

Every

6,000

miles

(Check

wheel

nut torque

after

1st

500

miles)

Tire

Rotation

1st

oil

change

and

then

every

2nd

Engine

Oil

Filter

Replace

Every 12

months

12,000

miles

Automatic

Transmission

and

Final

Drive

Lubricant

Change

9Cooling

System

See

Explanation

MaintenanceSchedule

Every

24,000

miles

10 Rear

Wheel

Bearings

Clean

Repack

Final

Drive

Boots

Output

Shaft

Seals

Check

Every

months

6,000

miles

Owner

Safety

Checks

Tires

and

Wheels

Inspection

Exhaust

System

Check

Engine

Drive

Belts

Check

Suspension

and

Steering

Check

17 Brake

and

Power

Steering

Check

Every 12

months

12,000

miles

Drum

Brakes

and

Parking

Brake

Check

Throttle

Linkage

Check

Underbody

Flush

and

Check

Bumper

Check

1st

months

6,000

miles

Thermostatically

Controlled

Air

Cleaner

then

months/

12,000

mile

Carburetor

Choke

intervals

Timing,

Dwell,

Carb

Idle,

Distributor

Coil

1st

months

6,000

miles

Carburetor

Intake

Manifold

Mounting

Every

6,000

miles

Spark

Plugs

(When

using

leaded

fuels)

Every

months

12,000

miles

Thermal

Vacuum

Switch

and

Hoses

Carburetor

Fuel

Filter

PCV

System

Air Cleaner

Element

Spark

Plugs

and

Ignition

Coil

Wires

Every

months

24,000

miles

Engine

Compression

ECS

System

Fuel

Cap

Tanks

and

Lines

EMISSION

CONTROL

MAINTENANCE

(1975

AND

1976

CERTIFIED

ENGINE)

*To

determine

year engine

was

certified,

refer

emission

control

decal

engine

valve

cover

EXPLANATION

MAINTENANCE

SCHEDULE

Presented

below

brief

explanation

each

the

services

listed

the

preceding

Maintenance

Schedule

Vehicle

operation

under

conditions

such

heavy

dust,

continuous

short

trips,

use

other

than

un-

leaded

low

lead

fuels

or pulling

trailers,

not

considered

normal

use

and

therefore

frequent

maintenance

will

required

Such

additional

maintenance

requirements

are

included

where

appli-

cable

ITEM

SERVICES

LUBE

AND

GENERAL

MAINTENANCE

CHASSIS-Lubricate

all

grease

fittings

front

and

rear

suspension

and

steering

linkage

Also

lubri-

cate

transmission

shift

linkage,

brake

pedal

spring,

parking

brake

cable

guides

and

linkage

ENGINE

OIL-Change

each

months

3,000

miles,

whichever

occurs

first

FLUID

LEVELS-Check

level

fluid

brake

master

cylinder,

power

steering

pump,

all

batteries,

engine,

final

drive,

transmission,

and

windshield

washer

The

engine

coolant

should

checked

for

proper

level

and

freeze

protection

to at

least

-20°F

(-29°C

(-37°C

Canada),

to the

lowest

tempera-

ture

expected

during

the

period

of vehicle

operation

Proper

engine

coolant

also

provides corrosion

pro-

tection

Any

significant

fluid

loss in

any

these

systems

GENERAL

INFORMATION



units

could

mean

that

malfunction

developing

and

corrective

action

should

taken

immediately

low

fluid

level

the

brake

master

cylinder front

reservoir

could

also

be an

indicator

that

the

disc

brake

padsneed

replacing

AIR

CONDITIONING-Check

condition

air

con-

ditioning

system

hoses

and

refrigerant

charge

sight glass

Replace

hoses

and/or

refrigerant

need

indicated

AIR

COMPRESSOR-Filter

should

washed

with

soap

and

water

solution

replaced

TIRES-To

equalize

wear,

rotate

tires

illus-

trated

Section

and

adjust

tire

pressures

shown

tire

placard

glove

box

door

Have

wheel-nuttorque

checked

after

500

miles

and

500

miles

after

every

wheel

replacement

thereafter

ENGINE

OIL

FILTER-Replace

the

first

oil

change

and

every

2nd

oil

change

thereafter

AUTOMATIC

TRANSMISSION

FLUID

AND

FINAL

DRIVE

LUBRICANT-Change

the

transmission

fluid

and

filter

;

change

final

drive

lubricant

COOLING

SYSTEM-At

12-month

12,000-mile

intervals,

wash

radiator

cap

and

filler

neck with

clean

water,

pressure

test

system

and

radiator

cap

for

proper

pressure

holding

capacity

(Tighten

hose

clamps

and

inspect

condition

all

cooling

and

heater

hoses

Replace

hosesevery

months

24,-

000

miles or

earlier

checked,

swollen

otherwise

deteriorated

1st

months

6,000

miles

then

months/12,000

mile

Thermostatically

Controlled

Air

Cleaner

Check

intervals

Carburetor

Choke

Check

Engine

Idle

Speed and

Mixture

Adjustment

Carburetor

and

Intake

Manifold

Mounting Torque

Every 6,000

miles

Spark

Plug

Replacement

Every

months

12,000

miles

Carburetor

Fuel

Filter

Replacement

Thermal

Vacuum

Switch

and

Hoses

Check

PCV

System

Check

Air

Cleaner

Element

Replacement

Spark

Plug

Wires

Check

Engine

Timing

Adjustment

and

Distributor

Check

Throttle

Return

Control

Check

Every

months

24,000

miles

ECS

System

Check

and

Filter

Replacement

Fuel

Cap,

Tanks and

Lines

Check



GENERAL

INFORMATION

Also

each

months

12,000

miles,

clean

ex-

terior

radiator

core

and

air

conditioning

con-

denser

Every

24 months

24,000

miles, drain,

flush,

and

refill

the

cooling

system

with

new

coo-

lant

solution

REAR

WHEEL

BEARINGS-Clean

and

repack

rear

wheel

bearings

with

lubricant

specified

the

"Recommended

Fluids

and

Lubricants"

chart

CAUTION



"Long

fiber"

"viscous"

type

greases

should not

used

not

mix

wheel

bearing

lubricants

sure

thoroughly

clean

bearings

and

hubs

all

old

lubricant

before

replacing

FINAL

DRIVE

AXLE

BOOTS

AND

OUTPUT

SHAFT

SEALS-Check

for

damaged,

torn or

leaking

boots

drive

axles

and

for

leaking

output

shaft

seal

Replace

defective

parts

necessary

SAFETY

MAINTENANCE

OWNER

SAFETY

CHECKS-The

maintenance

schedule

folder

the

glove

box

lists

several

items

the

owner

should

check and have

repaired

not

correct

TIRES

AND

WHEELS-To

equalize

wear,

rotate

tires

illustrated

Section

Adjust

tire

pressures

recommended

tire

placard

glove

box

door

Check

disc

brake

pads

and

condition

rotors

while

wheels

are

removed

Check

tires

for

excessive

wear

damage

Make

certain

wheels

are

not

bent

cracked

and

wheel

nuts

are

tight

Check

tire

inflation

pressure

least

monthly,

often

daily

visual

inspection

indicates the

need

EXHAUST

SYSTEM-Check

complete

exhaust

system

and

nearby

body

areas

vehicle

engine

and

motor-generator

system

for

broken,

damaged,

miss

ing

mispositioned

parts,

open

seams,

holes,

loose

connections

other

deterioration

which

could

per-

mit

exhaust

fumes

seep

into

the

passenger

com-

partment

Dust

water

the

passenger

compartment

may

be an

indication

problem

one

these areas

Any

defects

should be

corrected

immediately

help

ensure

continued

integrity,

ex-

haust

system

pipes

rearward

the

muffler

must

replaced whenever

new

muffler

installed

ENGINE

DRIVE

BELTS-Check

belts

driving

fan,

Delcotron,

power

steering

pump

and

air

condition-

ing

compressor

for

cracks,

fraying,

wear

and

tension

Adjust

replace

necessary

It is

recommended

that

belts

replaced every

months

24,000

miles,

whichever

occurs

first

SUSPENSION

AND

STEERING-Check

for

da-

maged,

loose

missing

parts,

parts

showing

visi-

ble

signs

excessive

wear

or lack

lubrication

front

and

rear

suspension

and

steering

system

Ques-

tionable

parts

noted should

replaced

by a

qualified

mechanic

without

delay

BRAKES

AND

POWER

STEERING-Check

lines

and

hoses

for

proper attachment,

leaks,

cracks,

chaf-

ing,

deterioration,

etc

Any

questionable

parts

noted

should

replaced

or repaired

immediately

When

abrasion

wear

evident

lines

hoses,

the

cause

must

corrected

DRUM

BRAKES

AND

PARKING

BRAKE-Check

drum

brake

linings

and

other

internal

brake

compo-

nents

each wheel

(drums,

wheel

cylinders,

etc

Parking brake

adjustment

also

should be

checked

whenever

drum

brake

linings

are

checked

NOTE

frequent

checks

should

made

driving

conditions

and

habits

result in

frequent

brake

application

THROTTLELINKAGE-Check

for

damaged

missing

parts,

interference

binding

Any

deficien-

cies

should

corrected

without

delay

UNDERBODY-In

geographic

areas

using

heavy

concentration

of road

salt

other

corrosive

materials

for

snow

removal

road

dust

control,

flush

and

inspect

the

complete under

side

the

vehicle

least

once each

year,

preferably

after a

winter's

exposure

Particular

attention

should

given

cleaning

out

underbody

members

where

dirt

and

other

foreigh materials

may

have

collected

BUMPERS-Check

the

front

and

rear

bumper

systems

12-month/

12,000-mile

intervals

sure

the

impact

protection

and

clearance

originally

signed

into

the

system remains

in a

state

full

readi-

ness

They

also

should

checked

whenever

there

obvious

bumper

misalignment,

whenever

the

vehi-

cle

has

been

involved

significant

collision in

which

the

bumper

was

struck,

even

when

damage

the

bumper

system can be

seen

EMISSION

CONTROL

MAINTENANCE

(1974

CERTIFIED

ENGINE)

THERMOSTATICALLY

CONTROLLED

AIR

CLEANER-Inspect

installation

make

certain that

all

hoses

and

ducts

are

connected

and

correctly

in-

stalled

Also

check

valve

for

proper

operation

CARBURETOR

CHOKE-Check

choke mech-

anism

for

free

operation

Any

binding

condition

which

may

have

developed

due

petroleum

gum

formation

the

choke

shaft or

from

damage

should

corrected

TIMING,

DWELL,

CARBURETOR

IDLE,

DISTRIBU-

TOR

AND

COIL-Adjust

ignition

timing,

dwell

and

carburetor

idle

speed

accurately

(following the

specifications

shown

the

label

attached

engine

rocker

cover)

the

first

months

6,000

miles of

operation

then

at 12

month

12,000

miles

Then

month

12,000

mile

intervals

Adjustment

must

made

with

test

equipment

known

to be

accurate

Replace

distributor

points

every

months

12,000

miles

and

replace

cam

lubricator

every

months

24,000

miles

addition,

carefully

spect the

interior

and

exterior

of the

distributor

cap,

distributor

rotor

and

coil

for

cracks,

carbon

tracking,

and

terminalcorrosion

Clean

or replace

necessary

24-month/24,000

mile

intervals

prevent

misfir-

ing

and/or

deterioration

Proper

functioning

the

carburetor

particu-

larly

essential

to control of

emissions

Correct

mix-

tures

for

emission

compliance

and

idle

quality

have

been

preset

GMC

Truck

Plastic

idle

mixture

li-

miters

havebeen

installed

the

idle

mixture

screws

discourage

unauthorized

adjustment

These

idle

limiters

are

not

removed

unless

some

major

carburetor

repair

replacement

which

affects

the

idle

screw

adjustment

has

been

necessary

months

12,000

mile

intervals

case

major

carburetor

overhaul,

when

poor

idle

quality

exists,

the

idle

mixture

should

be adjusted

use of

meter

when

accurate

meter

availa-

ble,

the

alternate

mechanical

method

should

used

to adjust

idle

mixture

(See

SECTION

6M)

CARBURETOR

AND

INTAKE

MANIFOLD

MOUNTING-Torque

carburetor and

intake

manifold

attach-

ing

bolts

and/or

nuts

first

months

6,000

miles

vehicle

operation

SPARK

PLUGS-Replace

6,000

mile

intervals

when

operatingwith

leaded

fuels,

12,000-mile

intervals

when

using

unleaded

fuels

Use

leaded

fuels

results

lead

deposits

spark

plugs

and

can

cause

misfiring

mileages

less

than

12,000

miles

Where

misfiring

occurs

prior

6,000

miles,

spark

plugs

good

condition

can

often be

cleaned,

tested,

and

reinstalled

engine

with

acceptable

results

THERMAL

VACUUM

SWITCH

AND

HOSES-

Check

for

proper

operation

malfunctioning

switch

must

replaced

Check

hoses

for

proper

connection,

cracking,

abrasion

deterioration

and

replace as

necessary

GENERAL

INFORMATION



CARBURETOR

FUEL

FILTER-Replace

filter at

12-month/12,000-mile

intervals

frequently

clogged

POSITIVE

CRANKCASE

VENTILATION

SYSTEM

(PCV)-Check

system

for

satisfactory

operation

12-

month

12,000-mile

intervals

using

tester,

and

clean

filter

Replace

the

PCV

valve

24-month

24,000-mile

intervals

and

blow

out

PCV

valve

hose

with

compressed

air

The

PCV

valve

should

re-

placed

12-month

12,000-mile

intervals

when

the

vehicle

used

operations involving

heavy

dust,

extensive

idling,

trailer

pulling,

and

short

trip

use

freezing

temperatures

where

engine

does

not

become

thoroughly

warmed-up

AIR

CLEANERELEMENT-Replace

the

engine

air

cleaner

element

under

normal

operating

conditions

every

12,000

miles

Operation

vehicle

dusty

areas

will

necessitate

frequent

element

replace-

ment

CAUTION

not

operate

the engine

with-

out the

air

cleaner

unless

temporary

re-

moval

necessary

during

repair

maintenance

the

vehicle

When

the air

cleaner

removed

backfiring

can

cause

fire

the engine

compartment

SPARK

PLUG

AND

IGNITION

COIL

WIRES-In-

spect

spark

plug

and

ignition

coil

wires

for

evidence

ofchecking

cracking

exterior insulation

and

tight

fit

the

distributor

cap

and

the

spark

plugs

Exterior

wires

should

cleaned,

any

evidence

corrosion

ends

removed

and

wire replaced

deteriorated

ENGINE

COMPRESSION-Test

engine

cranking

compression

problem

exists,

have

correction

made

Minimum

compression

recorded

any one

cylinder

should

not

less

than

70%

the

highest

cylinder

For

example,

the

highest

pressure

any

one

cylinder

1501bs

the

lowest

allowable

pressure

for

any

other

cylinder

would

105

lbs

(150

70%

105)

EVAPORATION

CONTROL

SYSTEM

(ECS)-Check

all

fuel

and

vapor

lines

and

hoses

for

proper

connec-

tions

and

correct

routing

as well as

condition

Remove

canister(s)

and

check

for

cracks

damage

Replace

damaged

or deteriorated parts

necessary

Replace

filter

lower

section of

canister

vehicle

equipped

with

two

canisters,

filter is

located

the

lower

canister

only

34 FUEL

CAP, FUEL

LINES

AND

FUEL

TANKS-In-

spect the

fuel

tank

cap

and

lines

for

damage

which

could

cause

leakage

Inspect

fuel

cap

for

correct

seal

ing

ability

and

indications

of physical

damage

Re-

place

any

damaged

malfunctioning

parts

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