Coil Housing Assembly - Chevrolet 1973 Overhaul Manual

Fig. 2--Removing Shaft Locknut
signs of excessive grooving due to slippage, both the
pulley and the clutch hub and drive plate assembly
should be replaced. The frictional surfaces of the pulley
and bearing assembly should be cleaned with a suitable
solvent before reinstallation.
Bearing Replacement
1. With the pulley and bearing assembly removed
from the compressor, use a sharp pointed
instrument to remove the wire retainer ring.
I f the bearing is to be reused be
CAUTION:
careful not to slip and damage the seal.
2. From the rear of the ' p ulley, press or drive bearing
out of pulley using Tool J-9398 and Handle J-8092.
3. From the front of the pulley and using Tool J-9481
with Handle J-8092, press or drive the new bearing
into the pulley.
Installation
1. Using Tool J-9481, press or drive the pulley and
bearing assembly onto the compressor neck. The
pulley should now rotate freely.
2. Install retainer ring using Snap Ring Pliers J-6435.
3. Install the wire bearing retainer ring.
4. Replace the hub and drive plate assembly. Use
proper tools. DO NOT drive or pound on the hub
assembly.

Coil Housing Assembly

Removal
1. Remove the hub and drive plate assembly, the
pulley and bearing assembly, and electrical
connector.
2. Scribe the location of the coil housing to the
AIR C O N D IT IO N IN G COM PR ESSOR
Fig. 3-R em oving Hub and Drive Plate Assem bly
Fig. 4 -D riv e Plate Key Installed in Keyway
compressor body. This operation is to insure that
the electrical terminals will be reassembled in the
same position.
3. Using Snap Ring Pliers J-6435, remove the coil
housing retainer ring (fig. 8).
4. Remove the coil housing assembly.
Inspection
Check coil for loose connectors or cracked insulation.
Amperage should not be more than 3.2 amps at 12 volts
D.C. at room temperature.
Installation
1. Rotate the coil housing to the correct position as
indicated by the scribe marks and the location of
the electrical terminals and fit into place (fig. 9).
2. Use Snap Ring Pliers J-6435 to install retainer ring.
NOTE: Install flat surface of the retainer
ring facing the coil housing.
3. Replace the pulley and bearing assembly and the
hub and drive plate assembly. DO NOT drive or
pound on the hub assembly.
4. If the compressor is installed in the vehicle, connect
the electrical connections.
1-3