Chevrolet 1977 Monte Carlo, Repair Manual

Page: 45 / 428

AIR CO N D ITIO N IN G COMPRESSOR OVERHAUL ID - 3 9
Before fully seating the assem bly onto the Front Head,
be sure the clutch coil terminals are in the proper location
in relation to the com pressor and that the three protrusions
on the rear o f the clutch coil align with the locator holes
in the Front Head.
6. Install the rotor and bearing assem bly retainer ring
and reassem ble the Clutch Plate and Hub assem bly as
described in "R-4 Compressor Clutch Plate and Hub"
R eplacem ent procedure. C heck to see that the clutch plate
to clutch rotor gap is .020 - .040 inches.
7. "Evacuate and Charge the Refrigerant System"
according to the D IS C H A R G IN G , A D D I N G OIL,
E V A C U A T IN G , A N D C H A R G IN G P R O C E D U R E S
F O R C .C.O .T. A /C SY STE M S in the A IR
C O N D IT IO N IN G section.
R-4 COMPRESSOR THRUST AND
BELLEVILLE W ASHERS
Remove and Replace
1. D ischarge the Refrigerant System" according to the
" D IS C H A R G IN G , A D D I N G OIL, E V A C U A T IN G
A N D C H A R G IN G P R O C E D U R E S F O R C.C.O .T. A /C
SY ST E M S in the A IR C O N D IT IO N IN G section.
2. R em ove the Front H ead assem bly as described in
"R-4 Com pressor Front Head" R em oval procedure.
R em ove and discard the front head O-ring seal.
3. R em ove the tw o thrust washers and one belleville
w asher from the com pressor shaft. N o te the assembled
p osition o f the washers.
4. Install a new thrust washer on the com pressor shaft
w ith the thrust washer tang pointing "up" (Figure ID -105).
5. Install the new belleville washer on the shaft with
the high center o f the w asher "up".
6. Install the rem aining thrust w asher on the shaft with
the tang pointing "down" (Figure I D - 105).
7. Lubricate the three washers w ith clean 525 viscosity
refrigerant oil and assem ble the Front H ead and new O-ring
on to the com pressor as described in "R-4 C om pressor Front
Head" R eplacem ent procedure.
R-4 COMPRESSOR M A IN BEARING
Remove
1. "D ischarge the Refrigerant System" according to the
D IS C H A R G IN G , A D D I N G O IL , E V A C U A T IN G A N D
C H A R G IN G P R O C E D U R E S F O R C.C.O .T. A /C
SYSTE M S in the A IR C O N D IT IO N IN G section.
2. R em ove the Front H ead assem bly as described in
"R-4 Com pressor Front Head" R em oval procedure.
D iscard front head O-ring.
3. Place the Front Head assem bly on tw o blocks, as
show n in Figure I D - 106, and use M ain Bearing R em over
J-24896 to drive the Main Bearing out o f the Front Head.
Replace
1. Place the Front Head "with neck-end down" on a
flat, solid surface.
2. A lign the new M ain Bearing and the Bearing
Installer J-24895 squarely with the bearing bore o f the Front
Figure 1D-105 Replacing R-4 Thrust and Belleville Washers
Figure 1D-106 Removing R-4 Main Bearing
Head and drive the bearing into the Front Head. The
Installer J-24895 m ust seat against the Front Head to insert
the bearing to the proper clearance depth (see Figure 1D-
107).
3. A ssem ble the Front H ead to the cylinder, using a
new O-ring as described in "R-4 Com pressor Front Head"
R eplacem ent procedure.
4. "Evacuate and Charge the Refrigerant System"
according to the D IS C H A R G IN G , A D D I N G OIL,
E V A C U A T IN G A N D C H A R G IN G P R O C E D U R E S
F O R C.C.O .T. A /C SYSTE M S in the A IR
C O N D IT IO N IN G section.
R-4 COMPRESSOR SHELL A N D /O R O-
RINGS
Remove
1. "Discharge the Refrigerant System" according to the
D IS C H A R G IN G , A D D I N G OIL, E V A C U A T IN G A N D
C H A R G IN G P R O C E D U R E S F O R C.C.O.T. A /C
SYSTE M S in the A IR C O N D IT IO N IN G section.
T H R U S T
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W A S H E R S
B E L L E V IL L E
F R O N T
H E A D
J 2 4 8 9 6
B E A R IN G
R E M O V E R