12
DISPLACEMENT PUMP SERVICE
20. Refer to the illustration in Fig 5 for your displacement
pump (217–201 or 220–449). Install the gland/pack-
ing stack (160**) on the piston valve (112) as follows,
with the lips of the v–packings facing up.
For Model 217–201 Displacement Pump:
Slide
the gland/packing stack supplied in Repair Kit
222–101 down onto the piston valve (1 12).
Do not
disassemble the packing stack,
and be sure the
lips of the packings are facing up. Install the backup
washer (131) on top of the gland/packing stack.
For Model 220–449 Displacement Pump:
Slide
the gland/packing stack supplied in Repair Kit
221–156 down onto the piston valve (1 12).
Do not
disassemble the packing stack,
and be sure the
lips of the packings are facing up.
21. Install the piston ball (132) in the piston valve housing
(110). Apply medium grade thread sealant to the
threads of the piston valve (112) and housing (110).
Screw the piston valve into the piston valve housing,
torquing to 81–102 N.m (60–76 ft–lb). Screw the pis-
ton rod (122) into the piston valve, aligning the holes.
Insert the cotter pin (126**).
22. Place the pump housing (109) in the vise. Install the
new o–rings (125**) on the pump cylinder (111). Lu-
bricate the cylinder and slide it into the pump housing
as far as possible.
NOTE:
In Model 220–449 Displacement Pump, install
the pump cylinder so the tapered end faces the
bottom of the pump.
23. Slide the rod guide (113) onto the piston rod (122),
with the flat side facing down.
24. Install the displacement rod assembly through the
bottom of the pump, guiding it carefully through the
throat packings.
Fig 5
Model 217–201
Model 220–449
PISTON PACKINGS
NOTE: LIPS OF V–PACKINGS
MUST FACE UP
131
112
110
110
112
160**
PISTON
GLAND/
PACKING
STACK
160**
PISTON
GLAND/
PACKING
STACK
**126
132
122
122
**126
132
Summary of Contents for Power-Flo Series
Page 2: ......
