924H, 924HZ, 928HZ and 930H Wheel Loaders Hydraulic System Piston Pump (Steering, Pilot) Caterpillar


Piston Pump (Steering, Pilot)
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924H, 924HZ, 928HZ and 930H Wheel Loaders Hydraulic System [KENR7610]
HYDRAULIC SYSTEM
PUMP GP
1.1. 130-6235 Pump Control Valve Gp (PRESSURE AND FLOW COMPENSATOR) and 228-0391 Pump Control Valve Gp (PRESSURE AND FLOW COMPENSATOR)



Illustration 1g01358527

(1) Torque for the eight screws ... 20 ± 1 N·m (15 ± 1 lb ft)

(2) 9T-3867 Spring

Length under first test force ... 11.18 mm (0.440 inch)
First test force ... 11.5 ± 1.0 N (2.56 ± 0.26 lb)
Length under second test force ... 6.73 mm (0.265 inch)
Second test force ... 13.0 ± 1.5 N (2.95 ± 0.30 lb)
Free length after test ... 40.13 mm (1.580 inch)
Outside diameter ... 24.89 mm (0.980 inch)

(3) 9T-2168 Spring

Length under test force ... 36.1 mm (1.42 inch)
Test force ... 325 ± 32 N (73.0 ± 7.2 lb)
Free length after test ... 53.98 mm (2.125 inch)
Outside diameter ... 26.80 mm (1.055 inch)

Note: Apply 4C-4030 Thread Lock Compound to the threads of the control rod (4) .

(4) Torque for the control rod ... 66 ± 7 N·m (49 ± 5 lb ft)

(5) Torque for the four bolts ... 7.5 ± 0.5 N·m (65 ± 4 lb in)

(6) Torque for the six bolts ... 33 ± 2 N·m (24 ± 1 lb ft)

High pressure cutoff ... 20700 ± 350 kPa (3000 ± 50 psi)

Maximum standby pressure ... 4300 kPa (625 psi)

Margin pressure at 2400 rpm with a discharge pressure of 11400 kPa (1650 psi) and a flow rate of 52 L/min (14 US gpm) ... 3850 ± 100 kPa (560 ± 15 psi)

Maximum flow rate at 2400 rpm with a discharge pressure of 7000 kPa (1000 psi) ... 104 L/min (27 US gpm)

130-6235 Pump Control Valve Gp (PRESSURE AND FLOW COMPENSATOR) and 228-0391 Pump Control Valve Gp (PRESSURE AND FLOW COMPENSATOR)




Illustration 2g01360926

(7) 9T-3814 Spring

Free length after test ... 35.61 mm (1.402 inch)
Test force ... 600 ± 60 N (137.0 ± 13.7 lb)
Length under test force ... 29.92 mm (1.178 inch)
Outside diameter ... 16.51 mm (0.650 inch)

(8) Torque for the plugs ... 2.0 ± 0.5 N·m (18 ± 4 lb in)

(9) Torque for the check valve seat ... 3.0 ± 0.5 N·m (27 ± 4 lb in)

(10) Torque for the socket setscrew ... 2.0 ± 0.5 N·m (18 ± 4 lb in)

(11) 130-3922 Spring

Free length ... 25 mm (1.0 inch)
Outside diameter ... 10.5 mm (0.41 inch)

(12) Torque for the plug ... 7.5 ± 1.5 N·m (65 ± 13 lb in)

Pressure compensation ... 20700 ± 350 kPa (3000 ± 50 psi)

Margin pressure ... 3600 ± 100 kPa (520 ± 15 psi)

Information System:

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