TM-9-2320-285-24-1

TRUCK TRACTOR, YARD TYPE, 43,500 LB GVW, DED, 4X2, ARMY MODEL M878A1

TECHNICAL MANUAL; ORGANIZATIONAL, DIRECT SUPPORT AND GENERAL SUPPORT MAINTENANCE MANUAL

OCTOBER 1985

TM-9-2320-285-24-1 - Page 450 of 987

TM 9-2320-285-24-1

2-38.

PROPELLER SHAFT TROUBLESHOOTING

MALFUNCTION

TEST OR INSPECTION

CORRECTIVE ACTION

1.

EXCESSIVE NOISE IN PROPELLER SHAFT

Step 1.

Check propeller shaft for insufficient lubrication, wear or damage (indicated by excessive movement

between universal joint and propeller shaft in any one direction).

a. If propeller shaft is insufficiently lubricated, lubricate (para 2-42); if worn or damaged, repair or

replace propeller shaft (para 2-42).

b. If propeller shaft is lubricated and not worn or damaged, go to step 2 below.

Step 2.

Check for bent propeller shaft.

a. If propeller shaft is bent, replace (para 2-42).

b. If propeller shaft is not bent, go to step 3 below.

Step 3.

Check splines on sleeve tube and splined shaft for wear or damage.

a. If splines are worn or damaged, replace sleeve tube and splined shaft (para 2-42).

b. If splines are not worn or damaged, notify direct support maintenance.

2.

EXCESSIVE VIBRATION IN PROPELLER SHAFT

Step 1.

Check propeller shaft for bent or sprung condition.

a. If propeller shaft is bent or sprung, replace (para 2-42).

b. If propeller shaft is not bent or sprung, go to step 2 below.

Step 2

Check universal joint for wear or damage by checking for movement between universal joint and

propeller shaft.

a. If movement is observed between universal joint and propeller shaft, replace propeller shaft (para 2-

42).

b. If movement is not observed, notify direct support maintenance.

2-427