Roland VersaCAMM VP-540 Service Notes page 99

4) Fix the setscrew at the D-cut part by pushing the gear
against the bearing.
< Procedure for pump without the motor >
1)
Remove the 3 screws as shown in the figure to remove
the plate from the pump, and fix it to the new pump.
Assemble the 2 pumps.
11
BEARING
SCREW
3-36
SETSCREW
GEAR
SETSCREW
GEAR
D-cut part
PLATE