32 EATON 620 Mobile Open Circuit Piston Pump Service Manual E-PUPI-TS018-E2 November 2017
Assembly
Assembly must be conducted in a clean
environment. Dispose of leakage oil and
oily cloths in an environmentally responsible
manner. Before assembly carefully clean
all the parts and blow out holes with
compressed air. Tighten all the screw plugs
to the specified torque. Exceptions are
specified in the text. Lubricate O-rings and
shaft sealing rings lightly with an acid free
lubricant and to hold the O-ring in place in its
groove or cavity.
1. Install snap ring and shaft seal
Note: Press shaft seal inside till the
face of the seal exactly matches with
inner surface of retaining ring groove.
3. Install cradle bearings
Note: The cradle bearings are asymmetrical.
Install with longer side towards the top of the
pump (controller side).
4. Install cradle bearing screws
Note: The old cap screws can not be reused
and must be replaced with new ones because
the screws will be damaged during disassem-
bly. The new cap screw threads will be coated
with loctite.
2. Insert the shaft bearing race
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