TUBE AS-BAFFLE 4T6009 - Caterpillar

1. Clean unit thoroughly with solvent, kerosene, or other non-corrosive cleaning fluid, which will not affect rubber components.2. Scribe a line across the three sections of the pump to act as a guide in reassembly.3. Remove the six hex screws (3), and two cap screws (2). Remove the key (23) from the drive shaft. (Four hex screws in "D" series.)4. Remove the front cover (5) by lightly tapping the flange with a soft metal hammer.5. The center section (12) will remain attached to either the front cover (5) or back cover (21). Place the drive gear (13) into the unseparated sections, and while holding the center section (12), tap lightly to separate. Be careful to avoid cocking on the dowel pins (7).6. Remove wear plate (10) and thrust plate (22).7. Mark the front cover island next to the pressure vent hole in the heat shield (9), gasket (8), and V-seal (6) to act as a guide in reassembly. The location of this vent hole determines pump rotation.8. Use a small diameter wire (a paper clip will do) to remove the phenolic heat shield (9), the paper compound gasket (8) and the rubber "V" seal (6). Discard these parts and replace when pump is reassembled.9. Remove both "O" rings (11) and discard. They also should be replaced.10. Do not remove shaft seal (1) in the front cover (5) unless it is damaged or leaking. If seal is to be replaced, use great care not to damage the seal recess or bearing. Heating the cover in an oven to 250° F will reduce the press fit.11. If flow control is defective replace as a cartridge.12. If R/V is defective replace as complete R/V unit.