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Section 142—Hydraulic Pump
33
LEFT VALVE
CHAMBER
ASSEMBLY—622
RIGHT
VALVE
CHAMBER
ASSEMBLY—621
GASKET— 613
SAFETY VALVE— 638
EXHAUST
CONTROL
VALVE— 640
A
PIN—352269- 87
DOWEL
PIN—357233-S
"
INTAKE CONTROL VALVE SPRING—697
Ne
5
a
INTAKE CONTROL VALVE—694
CONTROL LEVER—643
RM-608
Fig. 25—Control Valves, Disassembled
(2) INTAKE
AND
EXHAUST
CONTROL
VALVES.
Replace
the intake or exhaust valve if they are scored, or if the spring in the
outlet valve is broken. Replace the intake or exhaust control valve
bushings (subpar. (a) below) if they are scored. It is important that
the intake and exhaust control valves work freely in the bushings.
(a) CONTROL VALVE BUSHING REPLACEMENT.
Drive the bushing
out of the pump
base. Press the new bushing into the pump
base
with
a suitable
pressure
device
equipped
with
a pilot, until it is
perfectly flush with the machined surface on the base.
CAM BLOCK—617,__
PISTON—615
POWER
TAKE-OFF
SHAFT
BUSHING— 649
CAM
618
CAM
BLOCK—617
RM-602
Fig. 26—Cam Blocks and Pistons, Disassembled
3730-47)
§ 142. b. (2)(a)
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