TM 1-1520-238-23
Change 1
7-19
7.4.
PRIMARY HYDRAULIC PUMP REMOVAL/INSTALLATION – continued
7.4.6. Installation
NOTE
Steps a. thru c. will be performed off heli-
copter when installing new pump. Go to
step d. if original pump is to be rein-
stalled.
a. Install reducer (9) on pump (3).
(1) Lubricate new packing (24) and threads of
reducer (9). Use clean hydraulic fluid
(item 92, App F).
(2) Install packing (24) on small side of reducer
(9).
(3) Install reducer (9). Use open end wrench.
b. Install check valve (6) on pump (3).
(1) Lubricate new packing (23) and threads of
check valve (6). Use clean hydraulic fluid
(item 92, App F).
(2) Install packing (23) on inlet side (see flow
arrow) of check valve (6).
(3) Install check valve (6) with flow arrow pointing
away from pump (3).
c. Install nipples (2) and (12) on pump (3).
(1) Lubricate new packings (21) and (22), and
threads of nipples (2) and (12). Use clean
hydraulic fluid (item 92, App F).
(2) Install packings (21) and (22) on nipples (2)
and (12).
(3) Install nipples (2) and (12).
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M04-738-7
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24
9
12
22
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