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Displacement Pump
To reduce the risk of serious injury whenever you
are instructed to relieve pressure, always follow the
Pressure Relief Procedure on page 7.
Removing the Pump
See Fig. 23.
1.
Flush the pump. Relieve pressure.
2. Hold the intake valve (223) with a wrench and un-
screw the suction tube swivel union (53). Unscrew
the hose (133).
3 . Push the retaining spring (75) up. Push the pin (71)
out the rear.
4 . Loosen the locknut (137). Unscrew the pump.
r
I
U
@ f p 1
a %
2 0 4 '
2 0 2 '
Fig. 23
m 2 5 1
Disassembling
the
Pump
1.
Unscrew the intake valve (223) and remove all parts.
See Fig. 23.
2 . Remove the plug (205). Unscrew the packing nut
(216). See Fig. 24.
Fig. 24
'W
W26
26
308-082
3 . Tap the piston rod (224) down and then pull
it
out the
bottom of the cylinder (219). See Fig. 24.
4. Remove the glands
( 2 0 9 ' , 2 0 8 ' )
and v-packings
( 2 0 7 ' , 2 1 3 ' ) from the throat. See Fig. 24.
5 . Clamp the flats of the piston rod (224) in a vise.
Loos-
en the piston (222). Unscrew the nut (211) from the
piston. Remove the glands ( 2 1 0 ' , 2 1 4 ' ) and pack-
ings ( 2 1 2 ' , 2 0 6 ' , 2 0 3 ' ) from the piston. See Fig. 24.
Fig. 25
w z 7
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