854G Wheel Dozer Hydraulic System Caterpillar

Illustration 1	g00945583
Side View of the Piston Pump

(1) Installation torque for the two screws ... 4.0 ± 0.4 N·m (35 ± 4 lb in)

(2) Installation torque for the plug ... 102 ± 4 N·m (75 ± 3 lb ft)

(3) 9T-1699 Spring

Free length ... 17.17 mm (0.68 inch)

Outside diameter ... 24.892 mm (0.980 inch)

Assembled length ... 11.10 mm (0.437 inch)

Load at assembly ... 32.60 ± 3.11 N (7.33 ± 0.7 lb)

(4) Installation torque for the three bolts ... 8.5 ± 1.0 N·m (75 ± 9 lb in)

Illustration 2	g00945584
View for the Shaft End

(5) Installation torque for the plug ... 102 ± 4 N·m (75 ± 3 lb ft)

Illustration 3	g00945585
Sectional View

(6) Installation torque for the four bolts ... 91 ± 4 N·m (67 ± 3 lb ft)

(7) Installation torque for the bolt ... 91 ± 4 N·m (67 ± 3 lb ft)

(8) Installation torque for the four bolts ... 34 ± 3 N·m (25 ± 2 lb ft)

(9) Installation torque for the bolt ... 91 ± 4 N·m (67 ± 3 lb ft)

(10) Apply 4C-4030 Thread Lock Compound to the threads. Tighten the rod to the following torque. ... 79 ± 4 N·m (58 ± 3 lb ft)

(11) 100-3409 Bias Spring

Free length ... 141 mm (5.6 inch)

Outside diameter ... 42 mm (1.7 inch)

(12) Apply 4C-4030 Thread Lock Compound to the threads. Tighten the rod to the following torque. ... 79 ± 4 N·m (58 ± 3 lb ft)

Illustration 4	g00945621
Rotating Group

(13) Torque for the four bolts ... 34 ± 3 N·m (25 ± 2 lb ft)

(14) 9T-7771 Spring

Free length ... 71.2 mm (2.8 inch)

Outside diameter ... 52.7 mm (2.08 inch)

Illustration 5	g00945622
Pressure and Flow Compensator Valve

(15) Torque for the two locking nuts ... 17 ± 3 N·m (13 ± 2 lb ft)

(16) Torque for the two plugs ... 79 ± 4 N·m (58 ± 3 lb ft)

(17) 9T-7750 Spring

Free length ... 45 mm (1.772 inch)

Outside diameter ... 15.42 ± 0.13 mm (0.607 ± 0.0051 inch)

Assembled length ... 43.8 mm (1.72 inch)

Load at assembly ... 52.0 ± 11.0 N (11.7 ± 2.5 lb)

(18) Torque for the plug ... 30.5 ± 1.5 N·m (22.5 ± 1 lb ft)

(19) Torque for the two plugs ... 30.5 ± 1.5 N·m (22.5 ± 1 lb ft)

(20) 6E-4228 Spring

Free length ... 57.15 mm (2.250 inch)

Outside diameter ... 24.5 ± 0.5 mm (0.965 ± 0.02 inch)

Assembled length ... 44.7 mm (1.76 inch)

Load at assembly ... 871.27 ± 1 N (195.870 ± 0.225 lb)

Margin pressure at 97 ± 10 L/min (26 ± 3 US gpm) ... 2000 ± 100 kPa (290 ± 15 psi)

Maximum standby pressure ... 3500 kPa (500 psi)

112-7913 Piston Pump

Pressure cutoff at zero flow ... 14000 ± 350 L/min (3700 ± 92.5 US gpm)

186-2821 Piston Pump

Pressure cutoff at zero flow ... 12700 ± 350 L/min (3350 ± 92.5 US gpm)