Graco B Series Instructions-Parts List Manual page 15

Removing and Installing a Pump
Removal
WARNING
To reduce the risk of injury due to sprayer starting
unexpectedly, shut off engine and disconnect spark
plug before performing checks or service.
1. Flush the sprayer. Remove the suction hose.
Remove the outlet hose.
WARNING
MOVING PARTS HAZARD
To reduce the risk of amputating fingers,
keep fingers away from the connecting
link and pin while jogging the engine.
2. Start the engine. Jog the Easy Spray Control
between PRIME and OFF until the connecting link
stops near the bottom of the stroke and is fully
exposed. See Fig. 10. Shut off the engine.
3. Unscrew the collar (C) and disconnect the power
supply cord from the control (75). See Fig. 11.
4. Loosen the two mounting screws (60). See Fig. 10.
5. Use a screwdriver to push in the connecting link
pin (228) just until you can gently pry the retaining
ring up (61) from the back of the connecting link
(22). Then push the pin in so it falls out the back.
6. Remove the two mounting screws (60) while
supporting the weight of the pump with your free
hand. See Fig. 10.
7. Disconnect the cables (D) from the pressure drain
valve. See Fig. 12.
8. Unscrew the gauge, using a 1.062 inch wrench.
Unscrew the pressure drain valve assembly from
the pump.
Installation
1. Screw the pressure drain valve into the pump.
Install the gauge.
2. Push the pin (228) slightly into the connecting link
(22), but not into the mating hole of the pump.
3. Pull the piston rod (201) out of the pump 2 to 3
inches (50 to 75 mm).
4. Align the flats of the pump piston rod and the
pump outlet. Lift the pump into position and gently
push on the pin (228) while moving the pump
slightly until the pin slips into the hole. Be sure the
retaining ring (61) snaps down over the end of the
pin. Check the back of the bearing housing to be
sure the parts are installed properly. See Fig. 10.
WARNING
MOVING PARTS HAZARD
To reduce the risk of a serious injury or
property damage if the pin (228) comes
loose, be sure the retaining spring is
completely in the groove of the connecting link to
prevent it from working loose due to vibration.
5. Lift the pump to align the mounting holes and
install the mounting screws. IMPORTANT – torque
the screws to 20 ft-lb (27 N.m). See Fig. 10.
6. Connect all cables (D) to the pressure drain valve.
See Fig. 12. Plug in the power cord so the notch
(B) in the collar (C) and the tab (A) in the socket
align. Screw on the collar. See Fig. 11.
228
23
61
22
60
1 Torque to 20 ft–lb (27 N.m)
2 Back of pump
Cutaway view shows how pin (228) goes
3
through connecting rod
Fig. 10
75
B
C
A
Fig. 11
D
Fig. 12
228 2
201
22
1
61
3
0407
01782
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