Displacement Pump Repair; Disassembling The Pump; Reassembling The Pump - Graco ULTRA PIUS+ 1500 Instructions-Parts List Manual

Displacement Pump Repair
INJECTION HAZARD
To
reduce the risk of serious injury,
whenever you are instructed to relieve
pressure, follow the Pressure Relief
included in the kit are marked with an asterisk (*) in
NOTE
Packing Repair Kit
222-877
is available. Parts
the text. Use all the new parts in the kit. Clean all
and replace them as needed.
parts. Inspect the non-kit parts for wear or damage,
223
Fig.
14
ma01
A
must face down
tips of V-packings
n
*205
A
21 6
Flg.
15
02397
Disassembling the Pump
1. Remove the intake valve (223), O-ring (202), ball
the parts. See Fig.
14.
guide
(220),
stop pin
(221)
and ball
(204).
Clean
2.
Always Install a new O-ring
(202*).
If no further
service is needed, reassemble the intake valve.
3. Remove the packing nut (216) and plug (205).
See Fig. 15.
4.
Tap the piston rod
(224)
down with a plastic mallet,
and then pull the rod out the bottom of the cylinder.
5. Remove the throat packings (207.213) and
glands
(208, 209).
See F i g
15.
14 308-552
6.
Remove the sleeve. Use the sleeve removal tool,
part no.
220-991,
if necessary.
To use the tool: screw the large nut (E) of the tool
rod (D) to push the sleeve out. Remove the tool.
into the top of the cylinder
(219).
Screw down the
See Fig. 16.
D
E
219
Fig. 16
0028
7.
Clamp the piston rod
(224)
in a vise. Loosen the
jam nut (21
1). Unscrew the piston valve
(222).
See Fig. 17-3.
8. Remove all parts from the piston valve (222).
Reassembling the
Pump
of the throat "V" packings must face down.The lips of
NOTE
Alternate leather and plastic packings. The lips
the piston "V" packings must face up. The lips of the U-
cup seal
(203)
face down. Incorrect instailation dam-
ages the packings and results in pump leaking.
NOTE:
Soak leather packings in oil before reassem-
bling the pump.
1. Check the outside of the piston rod (224) and the
inside of the sleeve
(218) for wear. If the parts are
worn, new packings will not seal properly. Re-
place these parts if needed.
2.
Stack these parts onto the piston valve
(222):
the
backup washer
(214), seal (203*),
female gland
and the two leather packings
(206*),
and the
(215*),
alternate the three plastic packings
(212*)
male gland (210*). See Fig. 17.
3. Tighten the packing retaining nut
(21 1)
onto the pis-
ton valve
(222)
to
0.35
N.m
(4
in-lb). See Fig.
18.
4.
Place the ball
(225)
on the piston valve
(222).
5. Apply one drop of adhesive, supplied, to the pis-
ton valve threads. Hand tighten the valve assem-
contacts the rod.
bly into the piston rod
(224)
just until the nut
(21 1)
NOTE: Note the alignment of the piston (222) to the
nut
(21 l),
and maintain it through Steps
6
and 7. Use
two wrenches to maintain the alignment.
6. Place the flats at the top of the rod in a vise.
7. Using
two wrenches,
CAREFULLY
tighten the jam
nut
(21 1)
against the piston rod
(224)
to
26
N.m
(19ft-lb).
See Fig.
19.