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Adding an Auxiliary pad to a pump previously without one
1. Remove the six retaining screws (H80) and remove the retaining plate (H70) and cover plate (J15).
Remove the cover plate
H80
H70
H40
P108928
2. Observe the alignment pin (H40). If the pin remains in the charge pump, leave it in place. If the pin
comes out with the cover plate, reinstall it in the geroter eccentric.
Ensure that a cover for left hand rotation is used. (See instructions included with the auxiliary pad kit).
Orienting the alignment pin
J80
J60
J92
J95
J90
J50
J15
J30
J10
P108929
Gerotor
assembly
Left hand rotation
(outside looking into pump)
Alignment pin
H80
H70
Service Manual
Series 90 Pumps
Minor repair
50
520L0818 • Rev 0101 • August 2015