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1、25-1 GROUP 25 PROPELLER SHAFT CONTENTS GENERAL DESCRIPTION. . . . . . . . .25-2 PROPELLER SHAFT DIAGNOSIS . .25-2 INTRODUCTION TO PROPELLER SHAFT DIAGNOSIS . . . . . . . . . . . . . . . . . . . . . . . . 25-2 PROPELLER SHAFT DIAGNOSTIC TROUBLESHOOTING STRATEGY . . . . . . 25-2 SYMPTOM CHART. . . . .
2、 . . . . . . . . . . . . . . 25-3 SYMPTOM PROCEDURES . . . . . . . . . . . . 25-3 SPECIAL TOOL. . . . . . . . . . . . . . . . .25-4 PROPELLER SHAFT . . . . . . . . . . . . .25-5 REMOVAL AND INSTALLATION . . . . . . . . 25-5 INSPECTION. . . . . . . . . . . . . . . . . . . . . . . . 25-9 DISASSEMBLY A
3、ND ASSEMBLY . . . . . . . 25-10 SPECIFICATIONS . . . . . . . . . . . . . . .25-14 FASTENER TIGHTENING SPECIFICATION25-14 GENERAL SPECIFICATIONS . . . . . . . . . . 25-14 SERVICE SPECIFICATIONS . . . . . . . . . . . 25-14 LUBRICANT . . . . . . . . . . . . . . . . . . . . . . . . 25-14 COMPONENT IDENT
4、IFICATION . . . . . . . . 25-14 GENERAL DESCRIPTION TSB Revision PROPELLER SHAFT 25-2 GENERAL DESCRIPTION M1251000100119 The MONTERO has two propeller shafts. The front propeller shaft connects the transfer case to the front axle, and the rear propeller shaft connects the trans- fer case to the rear
5、 axle. Each propeller shaft is a two-joint type propeller shaft, and they have the fol- lowing features. A snap-ring method of securing the journal bear- ing of the universal joint has been adopted. The CFRP (Carbon Fiber Reinforced Plastic) tube equipped with a shock absorbing mecha- nism (contract
6、ion) improves safety in collision. (Rear only) CONSTRUCTION DIAGRAM AC203528 BJ REAR PROPELLER SHAFT(CFRP) BJ BJ FRONT PROPELLER SHAFT UNIVERSAL JOINT UNIVERSAL JOINT SNAP RING AB PROPELLER SHAFT DIAGNOSIS INTRODUCTION TO PROPELLER SHAFT DIAGNOSIS M1251001800058 If an abnormal noise is heard from th
7、e 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 M1251001900066 Use these steps to plan your diagnostic strategy. If you follow them carefully, you will be sure that you
8、 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. PROPELLER SHAFT DIAGNOSIS T
9、SB Revision PROPELLER SHAFT 25-3 SYMPTOM CHART M1251002000044 SYMPTOMSINSPECTION PROCEDURE REFERENCE PAGE Noise at start1 P.25-3 Noise and vibration at high speed2 P.25-3 SYMPTOM PROCEDURES INSPECTION PROCEDURE 1: Noise at Start DIAGNOSIS STEP 1. Check if the propeller shaft mounting bolts and nuts
10、are loose. (Refer to P.25-5.) Q: Are the bolts and nuts tightened to 60 10 Nm (45 7 ft-lb)? YES : Go to Step 2. NO : Tighten the bolts and nuts to 60 10 Nm (45 7 ft-lb). Then go to Step 5. STEP 2. Check the universal joints journal bearing of front propeller shaft for wear or damage. (Refer to P.25-
11、10.) 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 assemblys 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. STEP 4. Check the flange
12、 sleeve spline of rear propeller shaft for wear. Q: Is wear apparent? YES : Replace the rear propeller shaft. Then go to Step 5. NO : Go to Step 5. STEP 5. Retest the system. Q: Is the abnormal noise eliminated? YES : The procedure is complete. NO : Recheck from Step 1. INSPECTION PROCEDURE 2: Noise
13、 and Vibration at High Speed DIAGNOSIS STEP 1. Check the front propeller shaft run-out. ACX00643 Q:Is the measured value within the limit: 0.5 mm (0.02 inch)? YES : Go to Step 2. NO : Replace the front propeller shaft. Then go to Step 6. SPECIAL TOOL TSB Revision PROPELLER SHAFT 25-4 STEP 2. Check t
14、he front propeller shaft snap rings thickness. (Refer to P.25-10.) Q:Are they correct? YES : Go to Step 3. NO : Replace the snap ring. Then go to Step 6. STEP 3. Check the front propeller shaft journal bearings for wear or damage. (Refer to P.25-10.) Q:Is wear or damage apparent? YES : Replace the j
15、ournal bearing. Then go to Step 6. NO : Go to Step 4. STEP 4. Check the rear propeller shaft for wear or damage. (Refer to P.25-9.) Q:Is wear or damage apparent? YES : Replace the rear propeller shaft. Then go to Step 6. NO : Go to Step 5. STEP 5. Measure the clearance between the tube and the shaft
16、 at the end portion of the rear propeller shaft tube. ACX00920 Q:Is the measured value is within the standard value: 0.2 0.5 mm (0.008 0.020 inch)? YES : Go to Step 6. NO : Replace the rear propeller shaft. Then go to Step 6. STEP 6. Retest the system. Q:Is the abnormal noise eliminated? YES : The procedure is complete. NO : Recheck from Step 1. SPECIAL TOOL M1251000600062 TOOLTOOL NUMBER AND NAME SUPERSESSIONAPPLICATION MB990840 MB990840 Universal joint remover/ installer MB
