Table of Contents
Advertisement
- -
18-54
1977 PONTIAC SERVICE MANUAL
FRONT
HEAD
Fig. 18-93 1 9 7 7 A-6 Shell-To-Front Head 0-Ring
Installation
30. Add required amount of 525 viscosity refrigerant oil
(see "C.C.O.T. Refrigerant Oil Distribution").
31. Check for external and internal leaks as described
in the following "Compressor Leak Testing" procedure.
Fig. 18-94 Installing 1 9 7 7 A-6 Rear Head
MINOR REPAIR PROCEDURES FOR THE R - 4
COMPRESSOR
The following operations to the R-4 Compressor Clutch
covered later in this section as "Major Repair Procedures"
Plate and Hub, Rotor and Bearing, and Coil & Pulley Rim
because the system MUST FIRST BE PURGED of
are covered as "Minor" because they may be performed
Refrigerant-12.
WITHOUT FIRST PURGING THE SYSTEM OR
REMOVING THE COMPRESSOR from the vehicle.
The Compressor Shaft Seal assembly and Pressure Relief
Illustrations used in describing these operations show
Valve may also be serviced WITHOUT REMOVING THE
the compressor removed from the vehicle only to more clearly
COMPRESSOR from the vehicle but these operations are
illustrate the various operations.
Advertisement
Table of Contents
