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30 308801
Drain Valve
WARNING
INJECTION HAZARD
To reduce the risk of serious injury, when
instructed to relieve pressure, follow the
Pressure Relief Procedure on page 8.
1. Relieve pressure.
2. Turn handle (54) to closed position. Drive out pin
(53). Remove handle.
3. Remove base (52).
4. Unscrew drain valve assembly (51). gasket (55)
and seat (56) will stay in valve.
53
56
52
54
Apply thread sealant
Handle shown in closed position
Apply grease to face of base
Torque into pump manifold to
185 in-lb (21 Nm)
51
55
Fig. 27
7839A
1
3
4
2
1
2
3
4
Repair
1. Unscrew spring retainer from valve body. Remove
spring, washers and stem/ball. Clean any debris
from ball or seat area.
2. If replacing gasket (55) or seat (56), pry out gas-
ket.
NOTE: Whenever gasket (55) is removed, replace it
with a new one.
3. Place seat (56) in drain valve assembly (51) so
lapped side is toward ball. Apply a small amount of
grease to new gasket (55) and install it in drain
valve assembly.
NOTE: The gasket will protrude from the end of the
valve until the valve is tightened into pump, which
correctly seats the gasket.
Replacement
1. Apply a small amount of thread sealant (110110)
onto drain valve assembly (51) threads. Tighten
the valve into the pump manifold (229) to 185 in-lb
(21 Nm).
2. Lightly grease face of base (52) and install base.
Turn stem so pin hole is vertical.
3. Securely install handle (54) and drive pin (53).