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34.
Chapter IV—Hydraulic System
PIPE PLUGS—353055-S
Valve CHAMBER
INLET VALVE SPRINGS—647
606—RH.
VALVE GUIDES— 626
OUTLET VALVE SPRINGS— 646
SPRING SEATS—636
nerve
VALVE GUIDE SEATS—627
RM-601
Fig. 27—Valve Chamber, Disassembled
(3) PISTON.
Replace a piston (fig. 26) that is scored at any
machined surface.
(4) CAM,
CAM
BLOCK,
AND
POWER
TAKE-OFF
BUSH-
ING. Replace a cam, cam block, or power take-off bushing (fig. 26)
if they are scored.
(5) VALVE CHAMBER.
Replace a valve chamber (fig. 24) if it
is cracked or if the inlet valve or outlet valve seats are rough or pitted.
(6) PUMP
BASE.
Replace the base (fig. 22) if it is cracked, if
the gasket surface is nicked or damaged, or if any threads are stripped.
ce. Assembly.
Lubricate
all parts before
assembly.
Install the
exhaust control valve (fig. 27) in the exhaust control valve bushing.
Install the intake control valve, spring, washer, and spring retainer in
the bushing. Hold the intake control valve in the bushing, and install
the valve control lever (fig. 27). Connect the exhaust control valve to
the control lever with a clevis pin and cotter pin. Secure the control
lever to the cover with a cotter pin. Install the safety valve assembly
(fig. 24) on the pump
base.
Install the valve guide socket, valve
guide, inlet valve, inlet valve spring, outlet valve, outlet valve spring,
and valve chamber plug as shown in fig. 27. Secure the valve assembly
in place with the top clamp and cap screw. This procedure applies to
both the left and right valve chambers.
Install the cam
block on
the cam as shown in fig. 26. Install a piston on each cam block, mak-
ing sure that the narrow parts of the offset on each piston are together
when the pistons are installed on the cam blocks. After the pistons
are assembled on the cam block, the pistons may be fitted to the
cylinders in a valve chamber to be sure that the pistons have been
assembled
correctly on the cam
block. Install the power
take-off
bushing
in the pump
base.
The
shoulder
on
the power
take-off
bushing
must
be
installed
toward
the
pump
piston
assembly.
Position the pistons, cam block, and cam assembly in the pump base,
§ 142.
c.
3730-473
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