TM 1-1520-238-23
7-95
7.27.
HYDRAULIC HAND PUMP PISTON REMOVAL/INSTALLATION – continued
7.27.5. Inspection
a. Check piston bore and removed parts for
nicks, dents, cracks, and stripped or damaged
threads (para 7.1).
b. Check removed and attaching parts for corro-
sion (para 1.49).
7.27.6. Installation
a. Install new packing (9) and two retainers (8).
(1) Lubricate packing (9) and two retainers (8).
Use clean hydraulic fluid (item 92, App F).
(2) Install packing (9) between two retainers (8)
in groove (10).
b. Install scraper ring (7).
(1) Lubricate scraper ring (7). Use clean
hydraulic fluid (item 92, App F).
(2) Install scraper ring (7) in groove (11).
c. Install piston (2) in piston bore (6).
(1) Lubricate piston (2). Use clean hydraulic fluid
(item 92, App F).
(2) Install piston (2) in piston bore (6).
d. Install link (1) on piston (2).
(1) Install bolt (4) through link (1) and piston (2).
(2) Install nut (5) on bolt (4).
(3) Tighten nut (5) until bushings (12) are just
clamped. Continue tightening until cotter pin
hole is alined.
(4) Install new cotter pin (3).
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