TM 9-2320-260-34-1
Table 2-1. Mechanical Troubleshooting (Contd).
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
40. TRANSFER CASE OIL LEAKAGE
Step 1. Check transfer case-to-PTO oil feed line. Repair or replace oil feed line if feed line is leaking
Step 2. Check and verify approximate location of oil leaks.
a. Replace transfer front output flange oil seal if leaking (para. 9-4).
b. Replace transfer input flange oil seal if leaking (para. 9-4).
c. Replace transfer front output cover gasket if leaking (para. 9-4).
d. Replace transfer input shaft bearing cover gasket if leaking (para. 9-4).
f.
Replace transfer rear output bearing cover gasket if leaking (para. 9-4). Remove parking
g. Replace intermediate shaft rear bearing cover gasket if leaking (para. 9-3). Remove
parking brake (TM 9-2320-260-20) and replace gasket (para. 9-3).
h. Replace rear output shaft oil seal if leaking (para. 9-3).
i. Replace rear output shaft bearing retainer gasket if leaking (para. 9-3). Remove parking
brake (TM 9-2320-260-20).
l.
Remove transfer case if leak(s) continues (para. 9-3). Disassemble and replace defective
END OF TESTING!
Step 1. Confirm origin of noise.
a. Remove transmission-to-transfer propeller shaft and operate transmission in forward and
reverse.
b. Noise is from transfer case if no noise is present during test.
Step 2. Disconnect transfer rear propeller shaft and front axle propeller shaft (TM 9-2320-260-20).
a. Turn transfer front input shaft and feel for looseness and roughness in three shift
positions and when front axle is engaged and not engaged.
b. Remove transfer case if noise is present (para. 9-4). Disassemble transfer case and repair
c. If noise is not present, check differential for proper operation (malfunction 43).
END OF TESTING!
42. TRANSFER CASE GRINDS OR
POPS OUT OF
GEAR DURING NORMAL VEHICLE OPERATION
Step 1. Check condition and adjustment of transfer control linkages (TM 9-2320-260-20). Ensure
shift shaft has good detent action. If so, proceed to step 2.
END OF TESTING!