Hitachi 206405, SERIES J, SERIES K, 206699, 206700 warranty Displacement Pump Service

Displacement Pump Service

NOTE: If the pressure-fit brass bearing (15*) needs to be replaced, clamp it in a vise and drive the piston body (13) out with a plastic hammer. The new bearing must be started onto the piston body squarely.

8.Clean and inspect the parts and replace any that are worn or damaged. Be sure to check the copper gasket (46) in the motor base (55). Lubricate the parts with a light waterproof grease.

9.Install the seal (16*), packing (17*), bearing (18*), gasket (6*), seat (19*) and ball (2*) on the piston body (13). The check ball seat (19*) may be re- versed to provide a new seat. Screw the piston body (13) into the piston coupling (14).

10.Install the gasket (7*[). Screw the riser tube (12) into the air motor base (55).

11.Reinstall the ball (3*), gasket (7), ball stop (21) and other gasket (7) in the intake valve housing (22). Screw the housing onto the riser tube (12).

12.Be sure the ground wire is connected before regular operation of the pump.

306531 17