Chevrolet 1988 Light Duty Truck Repair Manual page 59

R-4 AIR CONDITIONING COMPRESSOR
SUBJECT
D escrip tion ........................................................................................................................................................................................ 1
Minor Repair to the C o m p re s s o r...............................................................................................................................................1
Clutch Drive Hub R eplacem ent.............................................................................................................. \ ..............................1
Clutch Rotor and/or Bearing Replacem ent - V-Groove T y p e ...............................................
Clutch Rotor and/or Bearing Replacem ent - Poly-Groove T y p e ..........................................
Clutch Coil and/or Pulley Rim Replacem ent - V-Groove T y p e .............................................
Clutch Coil and/or Pulley Rim Replacem ent - Poly-Groove T y p e ........................................
Major Repair to the C o m p re s s o r............................................................................................................
Shaft Seal R e p la c e m e n t.......................................................................................................................
Pressure Relief Valve R eplacem en t..................................................................................................
High-Side High-Pressure Cut-Off Switch R e p la c e m e n t.............................................................
Front Head and/or Seal R e p la c e m e n t..............................................................................................
Main Bearing R ep la c e m en t...................................................................................................................
Thrust and Belleville Washers R eplacem ent.....................................................................................................................1
Shell and/or Seal Replacem ent................................................................................................................ ..............................1
Discharge Value Plate and/or Retainer R eplacem ent.....................................................................................................1
Cylinder and Shaft Assembly R e p la c e m e n t.....................................................................................................................1
Leak T e s t in g ....................................................................................................................................................................................1
S p e c ific a tio n s ..................................................................................................................................................................................1
Special T o o ls ....................................................................................................................................................................................1
The Harrison R-4 compressor is a four cylinder, radial
opposed with 10.0 cubic-inch displacem ent.
Two belt-driven systems are available: V-groove and
poly-groove. The drive system affects minor repair proce­
dures.
Clean the com pressor before servicing. Clean replace­
ment parts with trichloroethane, naptha, Stoddard solvent,
kerosene or equivalent. Blow dry with dry air. Use a non­
lint producing cloth.
SECTION 1B3
CONTENTS
DESCRIPTION
After removing the com pressor from the vehicle, drain
and measure the refrigerant oil. Add new 525 viscosity
refrigerant oil after repair. Refer to " Specifications."
IDENTIFICATION
An identification label attached to the com pressor
provides the name of the manufacturer, model num ber
and build code. If the label is removed or becomes
dislodged during service operation, reattach it using an
adhesive sealant such as Loctite 312 or equivalent.
1B3-1
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