100-04-53
Noise, Vibration and Harshness
100-04-53
DIAGNOSIS AND TESTING (
CONTINUED
)
E859 EN
02/2001 2002 Bantam
CONDITIONS
DETAILS/RESULTS/ACTIONS
I3: CHECK FOR PULLEY RUN OUT/BELT WHIP
1
Check for pulley run out/belt whip.
- Ignition switch ON, engine running.
- Select NEUTRAL.
- Run the engine at the vibration speed.
- Check the belt for belt whip.
- Check the drive pulleys at idle for radial or
axial run out greater than 3.175 mm.
• Does the vehicle experience belt whip or pulley
run out?
Yes
For belt whip, CHECK/INSTALL new
accessories and drive system as necessary.
out, CHECK/INSTALL new pulley or
accessory as necessary. TEST the system
for normal operation.
No
GO TO
I4
I4: INSPECT THE BELT RIDE
1
Inspect the belt ride.
- Inspect the belt ride in each pulley at idle.
• Does the belt ride up and down the pulley?
Yes
INSTALL a new pulley.
TEST the system for normal operation.
No
GO TO
I5
I5: CHECK THE BELT
1
Check the belt.
- Ignition switch OFF. Remove the drive belt.
- Ignition switch in RUN, engine running.
• Has the vibration been reduced or eliminated?
Yes
INSTALL a new belt. TEST the system for
normal operation. If the condition still occurs
after installation
No