31EATON 620 Mobile Open Circuit Piston Pump Service Manual E-PUPI-TS018-E2 November 2017
Shimming process
Kit 9900776-000
Shimming Process
Installation Information
This shim kit is to replace
the crush ring within the
pump end cover.
If the housing, drive shaft,
shaft bearings or end cover
is replaced during servicing,
the original can no longer be
used to assure proper bear-
ing set.
Shimming procedures 1. Measure the thickness of
the existing crush ring.
2. To obtain a starting point,
stack shims to a few
thousandth of an inch less
than the measurement
of existing crush ring.
Then insert shims in to
the housing in the same
location as the removed
crush ring.
3. Assemble the housing
shaft bearings, shaft and
end cover. Install the end
cover cap screws and
torque to 384+/- 28 N.m.
4. Using a dial indicator,
measure drive shaft end
play. Target shaft end play
range is .001” to .003”
(.03 to .08 mm) clearance.
Add shims to achieve
proper shaft end play.
If no movement of the
shaft is observed, shims
will needs to be removed
and steps 3 and 4 be
repeated.
5. Finish the assembly of
the pump.
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