768C TRACTOR & 769C TRUCK POWER TRAIN Caterpillar


Rear Wheel Brake Group

Usage:

NOTE: Rubber tonic seals and all surfaces in contact with them must be clean and dry at assembly. Put a thin layer of oil on the surfaces of the metal seals that are in contact just before installation. Put lubricant on all other seals at assembly.

(1) Torque for bolts ... 270 ± 40 N·m (200 ± 30 lb ft)

(2) Torque for studs ... 65 ± 10 N·m (48 ± 7 lb ft)

(3) Torque for bolts ... 55 ± 10 N·m (40 ± 7 lb ft)

(4) Torque for bolts ... 135 ± 20 N·m (100 ± 15 lb ft)

(5) Thickness of thirteen new discs, twelve new plates and one new damper assembly ... 101.856 ± 2.708 mm (4.0101 ± .1066 in)

Thickness of one new 9W-7018 Disc ... 5.08 ± 0.13 mm (.200 ± .005 in)

Thickness of one new 7D-7504 Plate ... 2.413 ± .064 mm (.0950 ± .0025 in)

Thickness of one new 5D-6328 Damper Assembly ... 6.86 ± .25 mm (.270 ± .010 in)

(6) Torque for bolts ... 55 ± 10 N·m (40 ± 7 lb ft)

(7) Torque for three studs ... 110 ± 20 N·m (80 ± 15 lb ft)

(8) Torque for three nuts ... 270 ± 40 N·m (200 ± 30 lb ft)

NOTE: Tighten nuts (8) one turn at a time to pull housing down evenly. After all nuts are tight, tighten to final torque in a criss-cross pattern.

(9) 2G-5681 Spring:

Length under test force ... 60.5 mm (2.38 in)

Test Force ... 670 ± 34 N (150.0 ± 7.5 lb)

Free length after test ... 71.9 mm (2.83 in)

Outside diameter ... 25.4 mm (1.00 in)

(10) 2G-5665 Spring (inner):

Length under test force ... 71.42 mm (2.812 in)

Test Force ... 340 ± 16 N (250 ± 12 lb)

Free length after test ... 89.9 mm (3.54 in)

Outside diameter ... 24.61 mm (.969 in)

(11) 2G-5664 Spring (outer):

Length under test force ... 96.82 (3.812 in)

Test Force ... 3425 ± 170 N (770 ± 38 lb)

Free length after test ... 131.3 mm (5.17 in)

Outside diameter ... 43.66 mm (1.719 in)

(12) Torque for bolts ... 55 ± 10 N·m (40 ± 7 lb ft)

Caterpillar Information System:

768C TRACTOR & 769C TRUCK POWER TRAIN Rear Wheel Group 2G-5860
768C TRACTOR & 769C TRUCK POWER TRAIN Differential And Bevel Gear Group 9D-8935
768C TRACTOR & 769C TRUCK POWER TRAIN Rear Axle Housing
768C TRACTOR & 769C TRUCK POWER TRAIN Final Drive 6D-1520
768C TRACTOR & 769C TRUCK POWER TRAIN Selector And Pressure Control Valve 9U-9030
768C TRACTOR & 769C TRUCK POWER TRAIN Pressure Control Group 9U-9028
768C TRACTOR & 769C TRUCK POWER TRAIN Rotary Actuator 9W-4119
768C TRACTOR & 769C TRUCK POWER TRAIN Transmission Hydraulic Control 7G-1362
768C TRACTOR & 769C TRUCK POWER TRAIN Parking And Secondary Brake Release Valve 9T-4769
768C TRACTOR & 769C TRUCK POWER TRAIN Inlet Relief Valve For Transmission Oil Cooler 2P-2859
768C TRACTOR & 769C TRUCK POWER TRAIN Hoist Control Linkage 8X-3659
768C TRACTOR & 769C TRUCK POWER TRAIN Transmission Neutralizer Group (Body Raise Switch) 8W-7232
768C TRACTOR & 769C TRUCK POWER TRAIN Tire Valve 4D-2004
768C TRACTOR & 769C TRUCK POWER TRAIN Cab Mounting
768C TRACTOR & 769C TRUCK POWER TRAIN Pressures And Shift Points For Torque Converter And Transmission
768C TRACTOR & 769C TRUCK POWER TRAIN Systems Operation
768C TRACTOR & 769C TRUCK POWER TRAIN Testing And Adjusting
768C TRACTOR & 769C TRUCK STEERING SYSTEM Introduction
768C TRACTOR & 769C TRUCK STEERING SYSTEM Gear Pump Groups 9T-9909 (Part Of 9D-8665 Gear Pump Group)
768C TRACTOR & 769C TRUCK STEERING SYSTEM Flow Control Valve Group 9J-5385 (Part Of 8W-9888 Steering Oil Lines Group)
768C TRACTOR & 769C TRUCK STEERING SYSTEM Flow Switch Assembly 109-4215 (Part Of 8W-9895 Wiring & Lighting Group)
768C TRACTOR & 769C TRUCK STEERING SYSTEM Check Valve Group 9T-3097 (Part Of 8W-9888 Steering Oil Lines Group)
768C TRACTOR & 769C TRUCK STEERING SYSTEM Relief Valve Group 3G-4667 (Part Of 8W-9888 Steering Oil Lines Group)
768C TRACTOR & 769C TRUCK STEERING SYSTEM Steering Gear Group 8W-7227 (Part Of 8X-8282 (768C) And 8X-8281 (769C) Cab Arrangement)
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