Eaton 420 Series Installation Information

420 Series Eaton
Kit 9900194-008 Shimming Process
Installation Information
Introduction
This shim kit is to replace the crush ring within the pump
housing. If the housing, drive shaft, shaft bearings or end
cover is replaced during servicing, the original crush ring can
no longer be used to assure proper bearing set.
Shimming procedures:
1 Measure the thickness of the existing crush ring.
2 To obtain a starting point, stack shims to a few thou-
sandth of an inch less than the measurement of existing
crush ring. Then insert shims into the housing in the
same location as the removed crush ring.
3 Assemble the housing (**without interface o-ring seals),
shaft bearings, shaft and end cover. Install the end cover cap
screws and torque to 97 +/- 9 lbf.ft.
4 Using a dial indicator, measure drive shaft end play. Target
bearing set range is .001" clearance to .002" interference
(preload). Add shims to achieve proper bearing set. If no
movement of the shaft is observed, shims will need to be
removed and steps 3 and 4 repeated.
5 Finish the assembly of the pump.
Crush Ring 2
Housing 14
® Pumps
Front Bearing 16
Shim Kit 9900194-008 2
Rear Bearing 18
Shaft 1
Cap Screws 30
End Cover 4