Graco GM 3500 Instructions-Parts List Manual page 19

WARNING
To reduce the risk of serious bodily injury from
pump rupture, use only tool 222–586 to remove
the sleeve. If the sleeve is stuck, send the cylinder
to your Graco distributor for removal.
6. Remove the sleeve whenev-
er your service the pump.
Use special tool, Part No.
222–586 only. Screw the nut
(H) into the cylinder (219).
Screw down the rod (J) to
push the sleeve out. See Fig
19–1.
Assembling the pump.
NOTE: Use all the parts in repair kit 222–588 for the
best results. Parts included in the kit are
marked with an asterisk, (201*), in the text and
drawings.
NOTE: Soak the packings in oil, and coat the rod and
inside of the cylinder with oil to prevent dam-
age during assembly.
NOTE: Alternate leather and plastic v–packings and
be sure their lips as face the direction shown
in Fig 18–3. Incorrect installation damages the
packings and results in pump leakage.
1. Check the piston rod (224) and the inside of the
sleeve (218) for scoring or scratches. If these parts
are damaged, new packings will not seal properly.
2. Stack the piston packings onto the piston (222) as
shown in Fig 18–3 and Fig 19–2.
DISPLACEMENT PUMP
3. Tighten the piston
J
H
219
4. Apply ONE drop of adhesive, supplied with the repair
Fig 19–1
5. Tighten the nut (211) onto the rod (224) to 19 ft–lb
6. Stack the throat packings into the top of the cylinder
8. Assemble and install the intake valve. Use a new
nut (211) against the
piston to 10.5 in–lb
(1.2 N.m.) to seat
the packings, and
then back off and fin-
ger tighten.
Fig 19–2
Note the alignment of the piston (222) to the piston
nut (211) and maintain this alignment through Steps
4, 5 and 6.
kit, to the piston threads. Place the ball (225*) on the
piston. Hand tighten the piston into the rod (224) just
until the nut (211) contacts the rod. Place the flats of
the rod in a vise.
(25 N.m). Use two wrenches to maintain the align-
ment as mentioned in Step 3.
(219). Install the packing nut (216) loosely.
7. Insert the piston rod
assembly into the
top of the sleeve. In-
stall the gasket (202)
on the sleeve. Slide
the sleeve assembly
into the bottom of
the cylinder. Note
that the tapered end
of the sleeve is the
bottom. See Fig
19–3.
gasket (202*). Tighten the valve to 67 ft–lb (90
N.m). See Fig 18–1.
224
204*
APPLY ONE
DROP
OF SEALANT TO
THESE THREADS
211
222
CYLINDER
TAPERED
END OF
PISTON
SLEEVE
ASSY.
Fig 19–3