Chrysler RAM TRUCK 2500 1994 Service Manual page 307

7 - 12 COOLING SYSTEM
S E R P E N T I N E D R I V E BELT
DIAGNOSIS
Condition
Possible Cause
Correction
RIB C H U N K I N G
( O N E O R M O R E RIBS
H A S S E P A R A T E D
F R O M BELT B O D Y )
RIB O R BELT W E A R
L O N G I T U D I N A L
BELT C R A C K I N G
{CRACKS BETWEEN
T W O RIBS)
BELT SLIPS
" G R O O V E J U M P I N G "
(BELT D O E S N O T
M A I N T A I N C O R R E C T
P O S I T I O N O N P U L L E Y )
BELT B R O K E N
( N O T E : I D E N T I F Y
A N D C O R R E C T
P R O B L E M B E F O R E
N E W BELT IS
I N S T A L L E D )
N O I S E
( O B J E C T I O N A L
S Q U E A L , S Q U E A K ,
O R R U M B L E IS
H E A R D O R FELT
W H I L E D R I V E BELT
IS I N O P E R A T I O N )
Foreign objects i m b e d d e d in
pulley grooves.
Installation d a m a g e .
Pulley(s) misaligned.
Abrasive environment.
Rusted pulley(s).
Sharp or j a g g e d pulley g r o o v e tips.
Rubber deteriorated.
Belt has mistracked from
pulley g r o o v e .
Pulley g r o o v e tip has w o r n a w a y
rubber to tensile member.
Belt slipping because o f
insufficient tension.
Incorrect belt.
Belt o r pulley subjected to
substance (belt dressing, o i l ,
ethylene glycol) that has
reauced friction.
Driven component b e a r i n g failure.
Belt g l a z e d a n d hardened from
heat a n d excessive slippage.
Belt tension either too
high o r t o o l o w .
Incorrect belt.
Pulley(s) not within design
tolerance.
Foreign object(s) in grooves.
Pulley misalignment.
Belt c o r d l i n e is b r o k e n .
Excessive tension.
Incorrect belt.
Tensile members d a m a g e d d u r i n g
belt installation.
Severe misalignment.
Bracket, pulley, o r b e a r i n g
failure.
Belt slippage.
Bearing noise.
Belt misalignment.
Belt-to-pulley mismatch.
Remove foreign objects from
pulley grooves. Replace belt.
Replace belt.
A l i g n pulley(s).
Clean pulley(s). Replace
belt if necessary.
Clean rust from pulley(s).
Replace pulley.
Replace belt.
Replace belt.
Replace belt.
Replace tensioner.
Replace belt.
Replace belt and clean pulleys.
Replace faulty component bearing.
Replace belt.
Replace tensioner.
Replace belt.
Replace pulley(s).
Remove f o r e i g n objects
from grooves.
Check a n d Replace.
Replace belt.
Replace belt a n d
tensioner.
Replace belt.
Replace belt.
4) Check a n d replace.
Replace defective component
a n d belt.
Replace belt o r belt tensioner.
'2) Locate a n d repair.
3) Replace belt.
Install correct belt.
J 9 1 0 7 - 7 4