Displacement
Pump
219
B
A
0028
Fig.
24
WARNING
To
reduce the risk of serious
bodily injury from pump rup
-
ture,
use
only
tool
224–788
to
remove the
sleeve. If the
sleeve is stuck, send the
cylinder to your Graco dis-
tributor
for removal.
6. Remove the sleeve when servicing the pump. Use
special tool, Part No. 224–788 only . Screw the nut
(B)
into the cylinder (219). Screw down the rod (A) to
push
the sleeve out. See Fig. 24.
Assembling the Pump
NOTE:
Use repair kit 220–877, and using all its parts,
for
the
best results. The kit includes parts marked with an as
-
terisk,
(201*).
NOTE:
Soak the packings in oil, and
coat the rod and in
-
side
of the cylinder with oil.
NOTE: Alternate leather and plastic packings Be sure
the
lips of the v–packings face the direction shown.
Incor-
rect 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. 23
.
3. Tighten the piston nut (21 1) onto the piston to
10.5
in–lb (1.2 N.m.) to seat the packings, and then
back of
f and finger tighten.
211
222
225*
Apply
one drop
of sealant to
these threads
224
0029
Fig.
25
NOTE;
Note and maintain the alignment
of the piston
(222)
to the nut (21
1) through Steps 4, 5 and 6.
4. Apply
ONE
drop of adhesive, supplied with the repair
kit,
to the piston threads. Place the ball (225*) on the
piston.
Hand tighten the piston into the rod (224) just
until
the nut (21
1)
contacts the rod. Place the flats of
the
rod in a vise.
5. Tighten
the nut (21
1) onto the rod (224) to 19 ft–lb (25
N.m). Use two wrenches to maintain the alignment
as
mentioned in Step 3.
6. Stack
the throat packings into the top
of the cylinder
(219).
Install the packing nut (216) loosely
.
C
D
219
218
202*
0030
Fig. 26
7. Insert
the piston rod assembly (C) into the
top of the
sleeve (218).
Install the gasket (202*) on the sleeve.
Slide the sleeve assembly into the bottom of the
cylinder
(219)
. Note that the tapered end
(D) of the
sleeve
is at the bottom. See Fig. 26.
8. Assemble and install the intake valve. Use a new
gasket (202*). T ighten the valve to 67 ft–lb
(90
N.m). See Fig. 21
.
Installing the Pump
See Fig. 21
and 27.
1. Screw
the
pump 3/4 of the way into the bearing hous
-
ing
(76). Hold the pin (71) up to the pin hole in the
con
-
necting
rod (79) and continue screwing in the
pump
until
the pin slides easily into the hole.
2. Align
the top threads of the pump cylinder flush
with
the
face (E) of the bearing housing and so the outlet
nipple
(15) faces the rear of the unit.
3. Push the retaining spring (75) completely into the
connecting rod groove. T ighten the locknut (137)
very
tight - 70 ft–lb (95 N.m), to prevent it loosening
and damaging the threads of the bearing housing.
Torque:
70
ft–lb
(90 N.m)
71
75
76
137
79
E
0031
Fig.
27
WARNING
Be sure the retaining spring (75) is firmly in the
groove, all the way around, to prevent the pin (71)
from
working loose due to vibration.
If
the pin works loose, it or other parts could break of
f
due
to the force of the pump action. These parts
could
be
projected through the air and result
in serious bodi
-
ly
injury or property damage, including
damage to the
pump
connecting rod and bearing housing.
4. Tighten the packing nut (216) just enough to stop
leakage.
Fill the nut 1/3 full with Graco TSL.
5.
Assemble the remaining parts.
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