TM-9-2320-280-34 HMMWV Direct Support & General Support Maintenance Manual Download
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TM 9-2320-280-34 19 - 3. DIFFERENTIAL REPAIR (Cont’d) 48. Rotate housing (3) 90° . Lubricate rear pinion bearing (6) with lubricating oil. CAUTION Collapsible spacer controls pinion bearing preload. Do not reuse old spacer or pinion bearing damage may result. 49. Install collapsible spacer (8) on pinion gear (7) and install pinion gear (7) in housing (3). 50. Install pinion yoke (9) with locknut (10) on pinion gear (7). CAUTION Do not exceed specified preload torque on pinion bearings. Do not loosen locknut to replace preload torque or pinion bearing damage may result. If specified torque is exceeded, remove pinion gear and replace collapsible spacer and locknut and adjust preload again. 51. Tighten locknut (10) only enough to remove end play and seat pinion bearings in housing (3). Rotate pinion yoke (9) while tightening, to seat bearings evenly. 52. Measure torque required to rotate pinion gear (7). Correct pinion bearing preload torque is 17-25 lb-in. (2-3 N.m) with new bearings and 10-15 lb-in. (1-2 N.m) with used bearings. 53. Continue to tighten locknut (10) in small increments until pinion bearing preload torque meets specifications. 19-21