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TM10-3930-660-34
16-18.1. HYDRAULIC JOYSTICK CONTROL VALVE - REPAIR (Cont’d)
2.
INSPECT SPRINGS (16 AND 23) FOR
SIGNS OF STRETCHING OR DISTORTION.
3.
INSPECT PLUNGERS (19) AND SPOOLS
(24) FOR BURRS, NICKS OR SCORE
MARKS.
4.
INSPECT BORES IN CAPS (10) AND
SPECIAL PLUGS (20) FOR BURRS, NICKS
OR SCORE MARKS.
5.
INSPECT SPECIAL NUT (2), PIVOT PLATE
(4) AND PIVOT BOLT ASSEMBLY (5)
THREADS FOR DAMAGE.
ASSEMBLY
1.
APPLY A COAT OF
TRANSMISSION/HYDRAULIC OIL,
OE/HDO-10 TO ALL INTERNAL SLIDING
SURFACES.
2.
INSTALL METERING CAPSULE PARTS (20-
27).
a.
Assemble spool (24) to spring
seat (22) using pin (21).
b.
Install new O-rings (26 and 27) and
backup ring (25) on special plug
(20).
c.
Place spring (23) on spool (24)
and insert spool (24) in top of
special spool (20).
d.
Install special plug (20) and
associated parts in bottom of
housing (28). Tighten special
plug to torque of 29 to 41 lb.
ft.
e.
Repeat STEPS a through d for
other four sets of metering
capsule parts.
16-119
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