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) 80. Install differential housing spreader into holes in axle holding fixture adapters and install dial indicator to read from each end of housing (1). Indicator must have preload setting of 0.020 in. (0.50 mm). CAUTION Over-spreading of differential housing spreader will damage housing. 81. Spread housing (1) 0.010 in. (0.25 mm) and remove dial indicator. NOTE Differential bearings must be preloaded to compensate for heat and loads during operation. 82. Preload differential case side bearings (4) by increasing shims (2) thickness at each side of differential case (5) by 0.004 in. (0.10 mm) for a total bearing preload of 0.008 in. (0.20 mm). 83. Lubricate side bearings (4) with lubricating oil and install differential case (5), two bearing cups (3), shims (2), and bearing caps (6) in housing (1) with four capscrews (7). NOTE Preloaded differential bearings may change backlash setting. Check and correct backlash if necessary. 84. Remove housing spreader and tighten four capscrews (7) to 87 lb-ft (118 N.m). 85. Apply silcone sealant to cover (8) sealing surface and install cover (8) on housing (1) with twelve capscrews (9). Tighten capscrews (9) to 16 lb-ft (22 N.m). 86. Remove housing (1) from holding fixture. 87. Remove four capscrews (10) and two axle holding fixture adapters from housing (1). 19-26