TM-9-2320-280-34 HMMWV Direct Support & General Support Maintenance Manual Download
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TM 9-2320-280-34 7-8. TRANSMISSION/TRANSFER CASE REMOVAL (4L80E) (Cont’d) NOTE It will be necessary to rotate flywheel clockwise from capscrew in front of crankshaft to gain access to capscrews securing torque converter. 10. Remove six capscrews (26) from torque converter (27) and flywheel (25) and slide torque converter (27) away from flywheel (25). CAUTION Safety chain must be routed under transmission oil cooler lines and speedometer cable or damage may result. 11. Support transmission (19) with transmission jack and secure with safety chain. 12. Remove two capscrews (13) from transmission adapter (6) and bracket (11). 13. Remove nut (12), two washers (9), bypass valve (7), and capscrew (8) from right side of crossmember (14) and support bracket (10). 14. Remove locknut (15), washer (16), crossmember (14), and two washers (4), stud (2), cable (5), and two nuts (3) from support bracket (1). Discard locknut (15). CAUTION •If transmission is lowered too far, cooling fan damage will result. •Wood block must completely cover bottom of engine oil pan or oil pan damage will result. 15. Lower transmission (19) slightly and support engine under oil pan (24) with wood block and stand. 16. Disconnect main vent line (20) from transmission/transfer case vent line (21). 17. Remove 90°speedometer adapter (32) from transfer case (22) and disconnect speedometer cable (31) from bracket (28). Secure 90°speedometer adapter (32) and speedometer cable (31) away from transfer case (22). 18. Disconnect two leads (34) from transfer case switch leads (33) on transfer case (22). 19. Remove four tiedown straps (30) and harness (29) from speedometer cable (31). Discard tiedown straps (30). 20. Remove four capscrews (23) and two studs (18) from transmission (19) and engine(17). 7-18