OIL PUMP REPLACEMENT
588/A page 20/24
Figure 15 – Oil Pump
1. Remove the oil pump cover bolts and oil pump
cover.
2. Remove the oil pump assembly, drive cone and
spring.
3. Clean and inspect parts for wear or damage,
replace as necessary.
4. Place the spring and the drive cone in the end of
the crankshaft.
5. Note the slot in the end of the crankshaft and the
drive tab on the back of the oil pump assembly.
Install the oil pump assembly into the bearing
carrier with the tab and slot aligned.
6. Note the groove around outer edge of the oil pump
assembly and the stop pin in the oil pump cover.
Position the oil pump cover and new gasket with
the pin in the oil pump groove, rotating the oil pump
as needed. The bolt hole positions ensure proper
orientation of the oil pump cover.
7. BY HAND, tighten the oil pump cover bolts while
the pump cover is held flush with the bearing
carrier.
NOTICE: If by hand tightening, the oil pump
cover cannot be drawn flush with the bearing
carrier, the drive tab or the stop pin are
improperly aligned. DO NOT WRENCH
TIGHTEN OR THE OIL PUMP WILL BE
DAMAGED.
8. Once the oil pump cover is secured by hand, the
bolts may be evenly tightened per Table 7 - "Bolt
Torque."
EXTENDED STORAGE PROCEDURES
If a compressor is not to be put into service for some
time, or if a compressor is to be taken out of service for
an extended period, the following procedures should be
taken.
1. Fill the crankcase with rust inhibiting oil. (New
compressors are shipped from the factory without
oil.) Squirt oil on the piston rods and crossheads
through the nameplate opening. Loosen the V-
belts to relieve the load on the bearings. Rotate the
compressor by hand a few times to distribute the
oil.
2. Plug all openings and purge the compressor with
an inert gas such as nitrogen or dry air at about 50
psig (3.5 bar-g). This may be done at the factory if
requested. Leave the compressor pressurized to
prevent air or moisture from entering the unit.
NOTICE: Tag the unit with a warning that it is
pressurized.
3. If a purge gas is not available, fog oil into the
compressor suction while rotating the unit. Then
plug all openings to keep out moisture, insects, etc.
4. Turn the flywheel by hand a few revolutions once a
month to distribute the oil.
5. Store the unit under a plastic wrap on its wooden
shipping base up off the ground. If the unit was
boxed for export shipment, leave it in its box. An
indoor or covered storage area is preferable.
6. When the compressor is to be put in service, vent
the remaining purge gas and change the crankcase
oil. See the "Pre-Startup Checklist" and "Startup
Procedure" sections in this manual.
Figure 16 – Pressurized Compressor Tag
•
Compressor is pressurized with inert gas.
CAREFULLY bleed off gas BEFORE
attempting any service.
Hazardous pressure can
cause property damage,
serious personal injury
or death.
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