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 TM 9-2520-270-34
7. CHECK PISTON (1).
8. CHECK SPRING (2)
a. Using micrometer caliper set,
a.
Using inside indicator caliper, measure
measure diameter of piston (1).
free length of spring (2).
b. Replace piston (1) if measurement is
b.
Replace spring (2) if free length is
less than 1.248 inches (31.70 mm).
less than 3.28-inches (83.3 mm).
9 . CHECK FLUID REGULATING VALVE (3).
a.
Using 1/4-inch pin punch, push pilot
valve piston (4) gently into housing (5)
and release.
If piston (4) does not return to
b.
10. INSTALL CONTROL VALVE PISTON (1)
original position, go to step 9.1. If
AND SPRING (2).
piston does return to original position,
go to step 10.
a. Coat piston (1) with transmission oil.
b. Install piston (1) in piston bore (6).
9.1.
REPAIR MAKEUP PUMP FLUID
REGULATING VALVE, page 3-30.
c. Install spring (2) in piston (1).
Change 2
3-28
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