Graco A Series Instructions-Parts List Manual page 23

15
123
Fig. 20
2. Align the hole in the rod (107) with the connecting
rod assembly (15). Use a screwdriver to push the
retaining spring up and push in the pin (17). Push
the retaining spring (18) into place around the
connecting rod.
WARNING
MOVING PARTS HAZARD
Be sure the retaining spring (18) is firmly
in the groove all the way around, to pre-
vent the pin (17) from working loose due
to vibration. See Fig. 20.
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 into the air and result in
serious injury or property damage, including the
pump connecting rod or bearing housing.
3. Reconnect the drain hose (33).
4. Tighten the packing nut (102) enough to stop
leakage, but no tighter. Fill the wet-cup 1/3 full with
TSL. Push the plug (123) into the wet-cup.
Disassembling the pump
(See Fig. 21 except where noted)
1. Remove the intake valve (118). See page 22.
Displacement Pump
17
18
102
01068
2. Unscrew the packing nut (102) and plug (123).
3. Use a plastic mallet to tap the piston rod (107)
down, and then pull the rod out through the bottom
of the cylinder.
4. Remove the throat packings (104*,105*) and
glands (103*,106*).
5. Loosen the jam nut (117). Remove the cylinder
(115) and the o-ring (116*).
6. Clamp the flats of the piston rod in a smooth jaw
vise. Use an open-end wrench to loosen the
retaining nut (110) and then unscrew the piston
valve (108) from the rod (107).
7. Remove all parts from the piston valve (108).
123
102
*103
105*
*104
*106
*113
101
117
*116
115
Fig. 21
107
109*
110
111
112*
114*
125*
126*
108
118
03148A