Mitsubishi Montero Sport (2004+). Manual - part 421
PROPELLER SHAFT DIAGNOSIS
TSB Revision
PROPELLER SHAFT
25-3
PROPELLER SHAFT DIAGNOSIS
INTRODUCTION TO PROPELLER SHAFT DIAGNOSIS
M1251001800092
If an abnormal noise is heard from the propeller shaft
while driving, some parts of the propeller shaft may
be worn or damaged, or some mounting bolts may
be loose.
PROPELLER SHAFT DIAGNOSTIC TROUBLESHOOTING STRATEGY
M1251001900107
Use these steps to plan your diagnostic strategy. If
you follow them carefully, you will be sure that you
have exhausted all of the possible ways to find a pro-
peller shaft fault.
1. Gather information from the customer.
2. Verify that the condition described by the
customer exists.
3. Find the malfunction by following the Symptom
Chart.
4. Verify malfunction is eliminated.
SYMPTOM CHART
M1251002000088
SYMPTOM PROCEDURES
INSPECTION PROCEDURE 1: Noise at Start
DIAGNOSIS
STEP 1. Check if the propeller shaft mounting bolts and
.)
Q: Are the bolts and nuts tightened to 49
− 58 N⋅m (37 − 43
ft-lb) <3.0L engine> or 98
− 108 N⋅m (72 − 80 ft-lb) <3.5L
engine>?
YES : Go to Step 2.
NO : Tighten the bolts and nuts to 49
− 58 N⋅m (37 − 43
ft-lb). Then go to Step 5.
STEP 2. Check the universal joint's journal bearing of front
propeller shaft for wear or damage. (Refer to
Q: Is wear or damage apparent?
YES : Replace the journal bearing. Then go to Step 5.
NO : Go to Step 3.
STEP 3. Check the BJ assembly's spline of front propeller
shaft for wear.
Q: Is wear apparent?
YES : Replace the propeller shaft. Then go to Step 5.
NO : Go to Step 4.
SYMPTOM
INSPECTION
PROCEDURE
REFERENCE
PAGE
Noise at start
1
Noise and vibration at high speed
2