36
307-785
Removing and Installing a Pump
WARNING
To reduce the risk of a serious injury, follow the
Pressure Relief Procedure on page 4 whenever
you are instructed to relieve pressure.
Remove the pump
.
04433
69
42
43
47
70
224
40
216
Fig. 28
223
86
99
1.
Flush the pump. Relieve the pressure. Stop the
pump with the piston rod (224) in its lowest posi-
tion or carefully rotate the blades of the fan with a
screwdriver to lower the rod.
2.
Hold the intake valve (223) steady with a wrench.
Unscrew the suction tube (86).
3.
Disconnect the hose (70).
4.
Push up the spring (42). Push out the pin (43).
5.
Loosen the locknut (47). Unscrew the pump from
the bearing housing (69).
Install the pump.
1.
Screw the displacement pump three–fourths of the
way into the bearing housing (69).
2.
Hold the pin (43) up to the pin hole in the connect-
ing rod assembly (68). Continue screwing in the
pump until the pin slides easily into the hole. Back
off the pump until the top threads of the pump cyl-
inder are flush with the face (A) of the bearing
housing and the outlet nipple (40) is facing straight
back.
3.
Push the spring (42) into the groove all the way
around the connecting rod.
4.
Torque the locknut (47) to 70 ft-lb (97 N.m), using
a 2 inch open–end wrench and a light hammer.
WARNING
Be sure the retaining spring (42) is firmly in the
groove of the connecting rod, all the way around, to
prevent it from working loose due to vibration.
If the pin works loose, parts could break off due to
the force of the pumping action. These parts could
be propelled through the air and result in a serious
injury, sprayer damage or property damage.
CAUTION
If the locknut (47) loosens during operation, the
threads of the bearing housing (69) will be dam-
aged. Be sure to tighten the locknut firmly.
5.
Tighten the packing nut (216) just enough to stop
leakage, but no tighter. Fill the wet-cup/packing nut
1/3 full with Graco TSL. See Fig. 29.
68
47
42
69
Fig. 29
03750
43
A
Torque the nut to
70 ft–lb (95 N.m).
1
1
216
Summary of Contents for Ultra 1000
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