Graco LINE LAZER A Series Instructions And Parts List page 27

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
10.5 in–lb (1.2 N.m.) to seat the packings, and then
back off and finger tighten.
Apply one drop
of sealant to
these threads
Fig. 25
NOTE; Note and maintain the alignment of the piston
(222) to the nut (211) 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 (211) contacts the rod. Place the flats of
the rod in a vise.
5. Tighten the nut (211) 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.
Displacement Pump
A
B
219
0028
Fig. 24
1) onto the piston to
224
225*
211
222
0029
C
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
gasket (202*). T ighten the valve to 67 ft–lb
(90 N.m). See Fig. 21.
Installing the Pump
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
79
(90 N.m)
76
E
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 off
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.
219
202*
218
D
0030
new
See Fig. 21 and 27.
71
75
137
0031