Graco 236462, Instructions Manual

Page: 19 / 30

Repair
308352E 19
13. Lubricate and install the throat packings and glands
in the packing housing (3) one at a time, with the
lips of the v-packings facing down, in the following
order. Refer to F
IG
. 13, page 20:
- the male gland (7*)
- one UHMWPE v-packing (6*)
- one PTFE v-packing (4*)
- UHMWPE (6*)
- PTFE (4*)
- UHMWPE (6*)
- the female gland (5*)
14. Loosely install the packing nut (2).
15. Lubricate the displacement rod (1). Slide the rod,
piston assembly, and priming piston rod (18) into
the cylinder (10) from the bottom, until the top of the
rod (1) protrudes from the packing nut (2).
16. Lubricate the seal (8*) and install on the bottom of
the cylinder (10). Slide the intake valve housing (17)
onto the priming piston rod (18). Ensure that the
smooth surface of the valve stop (VS) is facing
down toward the pump intake.
17. Screw the housing onto the cylinder. See F
IG
. 13,
page 20.
18. Lubricate the priming piston rod (18), then slide the
assembled intake valve (ZE) onto the rod, making
certain that the packing nut (15) goes on the rod
first.
19. Push the valve assembly up the rod, stopping
before it reaches the intake valve housing (17). See
F
IG
. 12 page 19.
20. Hold the valve body (16) steady with a wrench. Use
an adjustable wrench to torque the packing nut (15)
to 97–106 N
•
m (71–78 ft-lb).
21. Use a rubber mallet on the priming piston rod (18),
to drive the valve assembly up to the stop (VS).
22. The intake seat (37) is reversible. Inspect both sides
of the seat and install it with the best side facing into
the housing (17). Push it into the housing until it
seats securely.
23. Lubricate the seal (38*) and install in the bevel
around the bottom of the seat. Refer to F
IG
. 13,
page 20.
F
IG
. 12
03830
16
15
17
10
2
1
18
ZE
Hold valve body (16) steady. Torque packing
nut (15) to 97–106 N•m (71–78 ft-lb).
1
1