Cadillac 60 Series 1963 Shop Manual page 415

13-34
HEATING AND AIR CONDITIONING
CAUTION: It is very important that all leaks
be repaired. Under no circumstances should
compressor be run when a leak exists, as com-
plete loss of refrigerant prevents oil return to
the compressor.
8. Charge system with refrigerant as described
in Note 23.
29. Compressor Removal and
Installation (Partial)
In order to perform certain engine operations,
it is necessary to move the compressor out of the
way. This can be done without disconnecting any
lines as follows:
a. Removal
1. Perform Steps 4 through 7, Note 28a.
2. Move complete assembly clear of working
area being careful not to kink hoses. Wire com-
pressor to a convenient location.
b. Installation
1. Perform Steps 1 through 4, Note 28b.
30. Adjusting Compressor Drive Belt
(Fig. 13-27)
1. Place Belt Tension Gage, J-7316, on drive
belt, mid-way between pulleys.
2. Loosen two bolts securing compressor to
mounting brackets at pivot areas.
3. Place Belt Tension Adjusting Wrench,
J-9646, on compressor front mounting flange.
4. Using a 1/2 inch square drive wrench, move
compressor outward until proper belt tension is
obtained. Adjust used belt to 60 pounds and new
belt to 90 pounds.
Belt Tension
Adjusting
Wrench
J-9646
Fig. 13-27 Adjusting Compressor Belt Tension
5. Tighten two mounting bolts.
31. Compressor Service
When servicing the compressor, remove only
the necessary components that preliminary diag-
nosis indicates are in need of service. Refer to
Fig. 13-28, for information relative to parts no-
menclature and location.
Some service operations can be p e r f o r m e d
without disturbing the internal mechanism assem-
bly or removing the compressor from the car.
Among them are replacement of the clutch plate
and hub assembly, the pulley and bearing assem-
bly, and the pulley bearing.
The clutch coil and housing assembly also
may be replaced without removing the com-
pressor, after clutch and pulley parts have been
removed. It is not necessary to disturb the shaft
seal.
The shaft seal assembly, however, can be re-
placed only by removing the compressor from the
car and removing the clutch plate and hub assem-
bly to gain access to the seal. A complete kit of
shaft seal parts is available for field replacement.
Removal and installation of external compres-
sor components, and disassembly and assembly
of internal components must be performed on a
clean workbench. The work area, tools, and parts
must be kept clean at all times. Parts Tray,
J-9402, should be used for all parts being re-
moved, as well as for replacement parts.
Although certain service operations can be
performed without removing the compressor from
the car, the operations described herein are
based on bench overhaul with the compressor
removed from the car. They have been prepared
in sequence in order 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 and measured.
This oil should then be discarded and new oil
added to the compressor as described in Note
25.
32. Compressor Clutch Plate and Hub
Assembly Removal and Installation
a. Removal
1. Place Holding Fixture, J-9396, in a vise,
and secure compressor to fixture with pulley
end up.
2. Keep clutch hub from turning with Clutch
Hub Holding Tool, J-9403, and remove lock nut