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 TM 9-2520-270-34
3. REMOVE PISTON ASSEMBLY (1)
FROM ROD (2)
a. Remove retaining ring (3) from
groove (4) in piston assembly (1).
Discard retaining ring.
4 . REMOVE AND DISCARD PACKING
RETAINER (5) AND PREFORMED
b. Remove and discard piston
PACKING (6) FROM ROD (2).
assembly (1).
5. CHECK ROD (2).
a. Using micrometer caliper set, meas-
ure diameter of rod (2) in two places.
7 . REMOVE FIVE MACHINE THREAD
b. Replace rod (2) if either measurement
PLUGS (7).
is less than 0.418 inch (10.62 mm).
a. Using 3/8-inch drive ratchet handle
c. Replace rod (2) if scored.
and 3/16-inch socket wrench attach-
ment, unscrew five plugs (7).
6. REPEAT STEPS 1 THROUGH 5
b. Remove and discard five preformed
FOR REMAINING THREE PISTON
packings (8).
ASSEMBLIES.
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4-203
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