TM-9-2320-280-34 HMMWV Direct Support & General Support Maintenance Manual Download
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TM 9-2320-280-34 18-4. TRANSFER CASE REPAIR (MODEL 242) (Cont’d) 7. Inspect rear differential assembly (1). (a) Mark front carrier (4) and rear carrier (3) cases for assembly. (b) Remove six screws (2) from rear carrier (3) and turn rear carrier (3) over. (c) Using slots (5), pry rear carrier (3) off front carrier (4). NOTE Needle bearing will fall free when removing short pinion gears. (d) Remove six pinion washers (6), three long pinion gears (7), six thrust washers (12), three short pinion gears (8), and fifty-four needle bearings (13) from pins (10) on front carrier (4). NOTE Record position of mainshaft gear, sprocket gear, and front carrier for assembly. (e) Remove mainshaft gear (9) and sprocket gear (11) from front carrier (4). Separate mainshaft gear (9) and sprocket gear (11). (f) Inspect front carrier (4) for cracks, damaged threads, broken or chipped gear teeth, and loose or damaged pins (10). Replace front carrier (4) if damaged. (g) Inspect rear carrier (3) for cracks and breaks. Replace rear carrier (3) if damaged. (h)Inspect short pinions (8) and long pinions (7) for cracks, chipped or broken gear teeth, and ridged or scored gear teeth. Replace three short pinions (8) and three long pinions (7), if any one is damaged. (i) Inspect thrust washers (12) and pinion washers (6) for breaks, cupping, and scoring. Replace all thrust and pinion washers (12) and (6) if any one is damaged. (j) Inspect mainshaft gear (9) and sprocket gear (11) for cracks, broken or chipped gear teeth, and cracks, gouges, or deep scoring on brass ring on bottom of mainshaft gear. Replace gear (9) or (11) if damaged. 18-38