938H and IT38H Wheel Loader and Integrated Tool Carrier Power Train Caterpillar

Illustration 1	g01265089

The pump is a one-section gear type pump.

Rotation is counterclockwise when the rotation is viewed from the drive end. For bench testing, use SAE 10W oil that is at 49°C (120°F).

Rotate the pump by hand. The pump must rotate freely.

Pump Output

Minimum output ... 107 L/min (28 US gpm)

Pump speed ... 1800 rpm

Pressure ... 2750 kPa (400 psi)

(1) Clearance between the gears and the cover ... 0.089 ± 0.028 mm (0.0035 ± 0.0011 inch)

(2) Bearings and Shafts

Bore of the bearings ... 41.283 ± 0.008 mm (1.6253 ± 0.0003 inch)

Diameter of shafts ... 41.232 ± 0.005 mm (1.6233 ± 0.0002 inch)

Illustration 2	g01266098
Cover (3)

Illustration 3	g01266099
Body (4)

Note: Install the bearings into the bores so that the bearings are 1.5 ± 0.5 mm (0.06 ± 0.02 inch) below the surface. Install the bearings so that the bearing joints are 30 ± 15° from the centerlines of the shafts, as shown.