General Description - Pontiac Fiero 1988 Service Manual

V-5 AIR CONDITIONING COMPRESSOR OVERHAUL 1D3-1
SECTION 1D3
V5 AIR CONDITIONING C O M P R E S S O R
OVERHAUL
For Compressor REMOVAL AND INSTALLATION, DISCHARGING, ADDING OIL,
EVACUATING AND CHARGING PROCEDURES FOR A/C SYSTEMS, see Air Conditioning Section IB.
CONTENTS
General Description
1D3-1
V5 Compressor Theory of Operation 1D3-2
S e r v i c e Procedures
1D3-4
Minor Repair Procedures
1D3-4
Clutch Plate and Hub Assembly 1D3-4
Clutch Rotor and Bearing ........................... 1D3-5
Clutch Coil 1D3-8
Major Repair Procedures
1D3-8
Shaft Seal Replacement 1D3-9
Seal Leak Detection 1D3-9
Pressure Relief Valve 1D3-11
High-Pressure Cut-Off &
Low-Pressure Cut-Out Switches 1D3-
Control Valve Assembly 1D3-
Rear Head, Head Gasket,
Rear Valve Plate, Suction Reed
Plate
and Cylinder-To-Rear Head
O-Ring 1D3^
Cylinder-To-Front Head O-Ring 1D3-
Leak Testing (External) 1D3
S p e c i a l Tools
1D3
11
12
12
13
13
14
GENERAL DESCRIPTION
Vehicles using the V5 compressor (Fig. 1) may
have differences between installations in the mounting
brackets, drive systems, pulleys, connections, and
system capacities. Basic overhaul procedures are
similar between compressors used on different vehicles.
Fig. 1 V 5 Compressor, V-Groove Pulley & Standard
Mounting
When servicing the compressor, keep dirt and
foreign material from getting on or into the compressor
parts and system. Clean tools and a clean work area are
important for proper service. The compressor
connections and the outside of the compressor should
be cleaned before any "on car" repairs, or before
removal of the compressor. The parts must be kept
clean at all times and any parts to be reassembled
should be cleaned with Trichloroethane, naphtha,
Stoddard solvent, kerosene or equivalent solvent and
dried with dry air. Use only lint free cloths to wipe
parts.
The operations described below are based on
bench overhaul with the compressor removed from the
car, except as noted. They have been prepared in order
MAXIMUM MOUNTING
IN FRONT HEAD
520002-1D3
Fig. 2 V 5 Compressor Front Head Orientation
of accessibility of the components. When a compressor
is removed from the car for servicing, the amount of
oil remaining in the compressor should be drained,
measured and recorded. This oil should then be
discarded and new 525 viscosity refrigerant oil added
to the compressor (see "Refrigerant Oil" Distribution
in Section IB).
N O T I C E :
It is important that the oil drain plug
(Figure 1) be removed and the oil drained thru the
plug opening to insure complete draining of oil
from the compressor.
Vehicles using the V5 compressor may have one
of two different rear heads. One rear head contains no
pressure switches. They are located in the refrigerant