HOUSING GP-AXLE 3912190 - Caterpillar

(1) Rubber rings and the surfaces they contact must be clean and dry at assembly. Put oil on contacting surfaces of metal seals at assembly.(2) Torque for nuts ... 300 15 N m (220 11 lb.ft.) Tighten nuts (2) one turn at a time to pull housing down evenly. After all nuts are bottomed, tighten to specified torque in criss cross pattern (see Tightening Sequence shown in Rear Brake Anchor).(3) Torque for studs ... 100 15 N m (75 11 lb.ft.)(4) Thickness of one new 7D3013 Damper ... 6.9 mm (.270 in.) Install dampers with facing material towards plate and piston.(5) 9D6093 Springs for piston compression (32 springs): Length under test force ... 90.7 mm (3.57 in.)Test force ... 4190 125 N (941 28 lb.)Free length after test ... 116.3 mm (4.58 in.)Outside diameter ... 46.3 mm (1.82 in.)9D6135 Springs for piston compression (28 inner springs):Length under test force ... 90.7 mm (3.57 in.)Test force ... 1540 45 N (345 10 lb.)Free length after test ... 115.6 mm (4.55 in.)Outside diameter ... 26.7 mm (1.05 in.)(6) Thickness of one new disc 7D3014 (earlier) ... 5.08 0.13 mm (.200 .005 in.)7T2629 (later) ... 5.08 0.13 mm (.200 .005 in.)Minimum friction material thickness (oil groove depth) average ... 0.46 mm (.018 in.)(7) 9D9121 Springs for piston return (4 springs): Length under test force ... 75.0 mm (2.95 in.)Test force ... 890 27 N (200 6 lb.)Free length after test ... 91.2 mm (3.59 in.)Outside diameter ... 26.7 mm (1.05 in.)(8) Torque for bolts ... 300 15 N m (220 11 lb.ft.)(9) Thickness of one new 7D7671 Plate ... 2.413 0.064 mm (.0950 .0025 in.)Minimum permissible thickness (worn) ... 2.16 mm (.085 in.)