BOOST PUMP -- REPLACE

TM 55-4920-426-13&P

BOOST PUMP -- REPLACE

3-77

This task covers:

Installation

INITIAL SETUP

Equipment

Condition

Personnel Required

Description

Para

68H Aircraft Pneudraulic

3-74

Pump removed

Repairman

Materials/Parts.

Tools

Pump assy.-Part Number 79009-145

Hydraulic Fluid, Item 3, Appendix D.

1- in. open end wrench

O-Rings-Part Number MS28778-16

1- in. open end wrench

INSTALLATION

a. Pour a small amount of hydraulic fluid into the inlet port while rotating the pump shaft. This will

lubricate the internal components.

b. Install coupling on pump shaft.

c. Install "O" ring on inlet elbow.

d. Install inlet elbow on boost pump, tighten hand tight.

e. Install "O" ring on outlet elbow.

f. Install outlet elbow on boost pump, tighten hand tight.

g. Install pump on mounting plate.

h. Install bolts through flatwasher, mounting plate and pump (2 places).

i. Install two Iockwashers and nuts, tighten nuts.

j. Engage the coupling halves and tighten setscrew.

k. Install outlet tubing and tighten nuts. Use 1- open end wrench.

l. Tighten the nut on the outlet elbow. Use 1- inch open end wrench.

GO TO NEXT PAGE

3-122