16
308352
Displacement Pump Service
Reassembly
Fig. 13 shows a cutaway of the entire pump.
1.
Lubricate the intake packings and install them in
the valve body (16) in the following order,
with the
lips of the v-packings facing up:
the female
gland (25*), one PTFE packing (24*), one
UHMWPE packing (26*), one PTFE (24*), one
UHMWPE (26*), and the male gland (23*). See
Fig. 11.
2.
With the beveled side facing up, press the intake
valve seal (39*) into the recess of the intake valve
packing nut (15) until it snaps into place. The nose
of the seal should be flush with or slightly recessed
into the face of the packing nut.
3.
Place the flats of the valve body (16) in a vise.
Screw the packing nut into the valve body hand-
tight. Set the intake housing assembly aside.
4.
Lubricate the piston seal (13*) and install it on the
piston seat (14). Screw the piston guide (11) onto
the seat (14). Place the guide in a vise as shown in
Fig. 9 and torque the seat to 75–88 N.m (55–65
ft-lb).
5.
If it was necessary to remove the priming piston
rod (18) from the piston (12), place the flats of the
piston in a vise. Using an adjustable wrench on the
flats of the rod, screw the rod into the piston.
Torque to 125–137 N.m (92–101 ft-lb). Be careful
not to create burrs on the flats of the rod.
6.
Place the piston seat/guide assembly onto the
piston (12) so the 45
_
beveled seating surfaces
match. Screw the displacement rod (1) into the
piston (12) hand tight, then torque the rod to
339–359 N.m (250–265 ft-lb).
04225
Fig. 11
1
2
39*
15
Lubricate.
Lips of v-packings must face up.
1
2
1
2
1
2
1
2
23*
26*
24*
26*
24*
25*
16
Содержание King 236462
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