PUMP GP-GEAR 1U2102 - Caterpillar

Cleanliness is an important factor. Before assembly, all parts should be thoroughly cleaned in cleaning fluid. Allow the parts to air dry. Wiping cloths or rags should not be used to dry parts. Lint may be deposited on the parts which may cause later trouble. Inspect all parts. If any parts are worn or damaged, use new parts for replacement. Lubricate all parts with clean hydraulic oil during assembly. 1. Inspect all the pump parts for wear. Check the bores in the body assemblies for wear. Measure the depth of the groove in each bore. If the groove is deeper than 0.38 mm (.015 inch), a replacement of the body assembly and gears must be made. 2. Install O-ring seal (2) on end plate (1), as shown. 3. Put cover (3) in position, as shown. Install the two bolts that hold cover (3) to end plate (1). 4. Install O-ring seal (4) on end plate (1). 5. Install rear body assembly (5) on the end plate in the original position, as shown. Two isolation plates are needed for each housing. The isolation plate that is installed in the bottom of the pump housing must have a radius along its outer edge which must be toward the bottom when installed. The isolation plate with the straight (square) edges along the radius, goes on top, next to the plate or flange.6. Install isolation plate (10) with the radius on the plate toward the bottom and the isolation plate next to the inlet passage of the pump.7. Install backup ring (8), O-ring seal (7) and retainer (9). The radius along the