Chevrolet 1988 Light Duty Truck Repair Manual page 74

1B4-2 DA-V5 AIR CONDITIONING COMPRESSOR
bearing. The rotation acts as an oil separator, which
rem oves some of the oil from the crankcase-suction
bleed, rerouting it to the crankcase where it can lubricate
the com pressor mechanism.
Up to 0.113 kg (4 oz.) of oil can collect in the crankcase.
Therefore, it is im portant when replacing a com pressor
that the oil in the old com pressor crankcase be drained
through the drain plug and m easured (discard after
recording amount).
All replacem ent com pressors will be shipped from
Harrison with 0.2268 kg (8 oz.) of oil in the crankcase. The
oil must be drained and retained. Then replace the oil in
the same amount as previously recorded from the old
compressor. Refer to " S pecifications."
IDENTIFICATION
An identification label attached to the com pressor
provides the name of the manufacturer, model number
and build code. If the label is removed or becomes
dislodged during service operation, reattach it using an
adhesive sealant such as Loctite 312 or equivalent.
1. C lu tc h C o il T e rm in a ls
2. H ig h P re ssu re R e lie f Valve
3. H ig h S id e Low P re s su re S w itc h
4. H ig h S id e C u t-O ff S w itc h
5. C o m p re s s o r C o n tro l Valve
Figure 3— Rear Head Details
F-04535