938G Wheel Loader and IT38G Integrated Toolcarrier Hydraulic System Caterpillar

Illustration 1	g00700236

(1) Torque for the four screws ... 20 ± 1 N·m (180 ± 10 lb in)

(2) Torque for the five bolts ... 25 ± 2 N·m (220 ± 20 lb in)

(3) Torque for the plug ... 5 ± 1.5 N·m (45 ± 15 lb in)

(4) Torque for the four bolts ... 7 ± 1 N·m (60 ± 10 lb in)

Rotation of the shaft is counterclockwise when the pump is viewed from the drive end.

Type: Variable Displacement Piston Pump

Use SAE 10W oil with an oil temperature of 65°C (150°F) to test the pump.

Pressure cutoff at zero flow ... 8300 ± 350 kPa (1200 ± 50 psi)

Test at Full Speed

Output ... 52 ± 3 L/min (14 ± 1 US gpm)

Pressure ... 7000 kPa (1000 psi)

Pump speed ... 2200 rpm

Engine speed ... 2200 rpm

Margin Pressure Setting

Margin pressure ... 1100 ± 100 kPa (160 ± 15 psi)

Output ... 26 L/min (7 US gpm)

Pressure ... 4500 kPa (650 psi)

Pump speed ... 2200 rpm

Engine speed ... 2200 rpm

Standby pressure (max) ... 2600 kPa (380 psi)