4-19. TRANSFER PUMP - ADJUST.
This Task Covers:
Tool Kit, General Mechanic's: Automotive (Appendix B, Section II, Item 1).
This adjustment can also be made to correct leaking that occurs around packing
Do not overtighten bushing as this will cause piston assembly to bind.
Adjust. (Refer to Figure 4-7).
Run pump for approximately five minute.
Allow cylinder and plunger to cool.
Apply a maximum of 30 psi air pressure. If pump does not start or if leakage occurs, adjustment is
Loosen power head assembly (1) from pump casing (2) until its holes line up.
Place hole punch through holes. Hand tighten power head assembly (1) into pump casing (2). This will
tighten Teflon packings.
Operate the transfer pump. If pump still leaks, notify next higher level of maintenance.