Graco 310645H Repair And Parts Manual page 22

Use Pump Assembly Replacement Kit 287255.
Disassembly
First read and follow instructions in the Before
performing any service on sprayer section, page 9.
Then remove hopper, front and back covers, page 9.
Remove hose extension and RotoFlex HD Pump
assembly from frame, page 11.
1 To prevent rotor assembly
from moving, insert a long
screw driver or pry bar in the
pulley.
2 Remove large bolt and
washer in center of rotor
assembly.
3 Pull rotor assembly off
shaft.
22
Rotor Assembly Replacement
ti4714a
ti4711a
Rotor Assembly Replacement
Reassembly
1 Put new rotor assembly from kit on shaft.
2 Insert a wrench in the
pulley to prevent it
from moving..
3 Replace bolt. Torque to
40 ft. lbs.
4 Replace RotoFlex HD Pump and hose extension,
page 12.
5 Replace back and front covers and hopper. See
Removing and Replacing Hopper, Front and Back
Cover, page 9.
ti4714a
ti4712a
310645H