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LUBRICATION AND MAINTENANCE
0 - 21
DRIVE
BELTS
At
the mileage indicated i n t h e L u b r i c a t i o n and
Maintenance C h a r t , a l l belts should be checked for
t h e i r condition a n d proper tension. Improper belt t e n -
sion can cause b e l t slippage a n d f a i l u r e .
Belts should be inspected for evidence o f cuts,
cracks, or glazing. Replace t h e belts i f there is a n i n -
dication of damage w h i c h could r e s u l t i n belt f a i l u r e .
I f adjustment i s required, t h e belts m u s t be adjusted
according t o t h e specifications a n d procedures de-
scribed i n Group 7, Cooling System. Special tools are
required t o properly measure tension and t o restore
belt tension t o factory specifications.
ENGINE
MOUNTS
Inspect t h e connecting fasteners between the block
and the engine m o u n t bracket a n d those h o l d i n g the
m o u n t t o t h e frame for correct torque (see Group 9,
Engines). T h e rubber i n t h e m o u n t should be i n -
spected for excessive softening and/or swelling caused
by o i l and/or gasoline c o n t a m i n a t i o n . S l i g h t surface
deterioration a n d wear at t h e ends w i l l not adversely
affect
performance.
I f , however,
excessive
engine
movement, r u b b e r softening o r swelling, or noise
caused by metal-to-metal contact is observed, the en-
gine mount assembly should be replaced.
CAUTION: Avoid continuous contamination with oil
or gasoline. Such contamination will result in re-
duced engine mount life.
IGNITION
WIRES
The i g n i t i o n wires should be kept clean and prop-
e r l y connected. T e r m i n a l s should be f u l l y seated and
t h e nipple assemblies should n o t be removed f r o m
t h e d i s t r i b u t o r or coil towers.
EXHAUST SYSTEM
The exhaust system m u s t be properly aligned to
prevent stress, leakage, and body contact. I f t h e sys-
t e m contacts a n y panel, i t m a y amplify objectionable
noises o r i g i n a t i n g f r o m the engine o r the body.
Inspect the exhaust system a t t h e mileage or t i m e
intervals specified i n the Maintenance Schedule i n
t h i s Group for t h e following conditions. Correct as re-
quired.
(1) Exhaust system leaks, damage, m i s a l i g n m e n t .
(2) Grounding against body sheet m e t a l or frame.
(3) Catalytic converter " b u l g i n g " o r heat damage.
W h e n inspecting a n exhaust system, c r i t i c a l l y i n -
spect for cracked o r loose j o i n t s , stripped screws/bolt
threads, corrosion damage, a n d w o r n or broken hang-
ers. Replace a l l components t h a t are badly corroded
or damaged. Do n o t a t t e m p t repair.
CAUTION: The catalytic converter(s) will become
contaminated if leaded gas is used, or if the engine
or emission controls are not maintained as sched-
uled. If this occurs, the catalyst (the alumina-coated
beads in the converter) or the entire converter must
be replaced.
AIR CONDITIONING COMPRESSOR
The l u b r i c a n t level i n the a i r conditioning compres-
sor should be checked i f there are signs t h a t o i l was
lost (oily shaft seal area, o i l covered f i t t i n g s , etc.).
Loss of o i l u s u a l l y accompanies loss o f refrigerant
charge. The presence of gas bubbles (white foam) as
viewed t h r o u g h t h e filter d r i e r sight glass, w h i l e the
system is i n operation, indicates some loss o f refrig-
erant charge has occurred.
For compressor o i l level check or recharging sys-
tem, see Group 24, H e a t i n g and A i r conditioning.
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