Graco C Series Instructions-Parts List Manual page 4

Removing & Installing a Pump Assembly
1. Push the pin (231) just barely into the connecting
rod (C), but not into the mating hole of the pump
piston rod (E).
2. Pull piston rod (E) out of pump 2 - 3 in. (50-75
mm).
3. Align the flats of the piston rod (E) and the pump
outlet. Lift the pump into position and gently push
on the pin (231) while moving the pump slightly
until the pin slips into the hole. Be sure the retain-
ing ring (B) snaps down over the end of the pin.
4. Check the back of the bearing housing (A) to be
sure the parts are installed properly.
5. Lift the pump to align the mounting holes and in-
stall the mounting screws (D). IMPORTANT –
torque the screws to 20 ft-lb (27 N.m). See Fig 2.
6. Plug in the power cord so the notch (H) in the col-
lar (J) and the tab (G) in the socket align. Screw
on the collar. See Fig 3.
WARNING
MOVING PARTS HAZARD
Be sure the retaining spring (B) is firmly
in the groove of the connecting rod (C),
all the way around, to prevent it from
working loose due to vibration. See Fig 2.
If the pin works loose, it or other parts could break
off due to the force of the pumping action and re-
sult in serious bodily injury or property damage and
equipment damage.
4
308127
2
231
C
B
E
3
Fig 2
H
Fig 3
231
A
B
C
D
1
Torque to 20 ft–lb
1
(27 N.m)
Front view of pump and
2
sprayer connecting link
Cutaway view shows how
3
pin goes through
connecting rod
F
G
J
0407
0408