Displacement
Pump
WARNING
To
reduce the risk of serious bodily injury from
the sleeve.
If
the sleeve
is
stuck, send the cylinder
pump rupture, use
onfy
tool
222-585
to remove
to your Graco distributor for removal.
6.
Remove the sleeve
(218)
whenever your Setvice
the pump. Use special tool, Part No.
222-585
only. Screw the nut (H) into the cylinder
(219).
Screw down the rod
(J)
to push the sleeve out.
See Fig.
36.
h
Assembling
the
pump.
NOTE For the best results, use repair kit
222-587,
and use all the
kit
parts. Parts included in the kit. are
marked with
an
asterisk,
(202*),
in the text and draw-
ings.
NOTE Soak the packings
in
oil, and coat the rod and
inside
of
the cylinder with oil.
NOTE Alternate leather and plastic packings as
face the direction shown. Incorrect installation dam-
shown in Fig.
39.
Be sure the lips of the v-packings
ages the packings and results in pump leakage.
1.
Check the piston rod
(224)
and the inside of the
sleeve
(21 8)
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.
39.
3.
Tighten the piston nut
(21
1)
onto the piston to
0.7
N.m.
A
Apply
one drop
of
-
224
sealant
lo
lhese
threads
225*
21 1
222
Fig.
31
w28
4.
5.
6.
7.
8.
Note the alignment of the piston
(222)
to the pis-
ton nut
(21 1)
and maintain this alignment through
Steps
5,6
and
7.
Apply ONE drop
of
adhesive, supplied with
the
repair
kit,
to the piston threads. Place the ball
the rod
(224)
just until the nut
(21 1)
contacts the
(225*)
on the piston. Hand tighten the piston into
rod. See Fig.
37.
Place the flats
of
the rod in a
vise.
Tighten the nut
(21 1)
onto the rod
(224)
to
25
as mentioned in Step
4.
N.m.
Use
two
wrenches to maintain the alignment
Stack the throat packings into the top of the cylin-
der
(219).
install the packing nut
(216)
loosely.
See Fig.
39.
Install the new O-ring
(202*)
on top of the sleeve
the top
of
the sleeve. Slide the sleeve assembly
(216).
Insert the piston rod
(224)
assembly into
into the bottom
of
the cylinder. Note that theta-
38.
pered end of the sleeve
is
the bottom. See Fig.
A
Tapered end
Fig.
38
0330
9.
Assemble and install the intake valve. Use am
packing
(202*).
Tighten the valve to
64
N.m. See
Fig.
39.
34
307-889
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