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17. Install o–ring retainer (43). Lubricate o–ring (18)
and slide it on over the threads of piston shaft.
Apply medium strength liquid thread adhesive to
the piston nut (26) threads and the piston rod.
Screw the nut snuggly against the o–ring retainer
(43). Apply anti–seize lubricant 222955 to the
bottom face of the piston nut (26). Assemble
o–ring (19) and install in the groove on the piston
nut. Screw rod (29) into piston (23) until snug.
Tighten piston nut (26) to 270–284 NSm. (200–210
ft–lb).
18. Remove the piston assembly from the vise, but do
not lay it down on its side.
CAUTION
Do not lay the piston assembly, with the new seal
installed, on its side. Doing so may damage the seal.
NOTE: Refer to Fig. 13 for Step19.
19. Carefully and evenly guide the seal and the piston
into the cylinder. The piston seal and piston may
need to be tipped at an angle and the exposed,
leading lip of the seal tapped into the cylinder with
a plastic mallet. After the seal lip has entered the
cylinder use an arbor press or tap the bottom of
the piston assembly lightly with a plastic mallet to
slide the piston assembly into the cylinder. Before
pressing, ensure the piston seal lips are started
into the cylinder.
Service
20. Clean the remaining pump parts in a compatible
solvent.
1
Do not damage edges of seal (24).
23
29
Fig. 13
24
1
27
TI0221
309136
21
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