Compressor HVAC: Service and Repair

Pre-removal & Post Installation Operation:

Removal Steps 1-7:

DISCHARGE HOSE DISCONNECTION

CAUTION: As the compressor oil and receiver are highly moisture absorbent, use a non-porous material to plug the hose and nipples.

To prevent the entry of dust or other foreign bodies, plug the dismantled hoses and compressor nipples.

<> A/C COMPRESSOR REMOVAL
Take care not to spill any compressor oil when removing the compressor.

INSTALLATION SERVICE POINT

>>A<< A/C COMPRESSOR INSTALLATION
If a new compressor is installed, first adjust the amount of oil according to the procedures described below, and then install the compressor.

1. Measure the amount X cubic.cm (X fl.oz) of oil within the removed compressor.
2. Drain (from the new compressor) the amount of oil calculated according to the following formula, and then install the new compressor.

New compressor oil amount = 140 sq(cm) (4.7 fl.oz)

140 cubic.cm - X cubic.cm = Y cubic.cm (4.7 fl.oz - X fl.oz = Y fl.oz)

NOTE: Y cubic.cm (Y fl.oz) indicates the amount of oil in the refrigerant line, the condenser, the evaporator, etc.

NOTE: When replacing the following parts at the same times as the compressor, subtract the rated oil amount of each part from Y cubic.cm (Y fl.oz) and discharge from the new compressor.

Quantity:
Evaporator: 60 cubic.cm (2.0 fl.oz)
Condenser: 15 cubic.cm (0.5 fl.oz)
Suction hose: 10 cubic.cm (0.3 fl.oz)
Receiver: 10 cubic.cm (0.3 fl.oz)

Disassembly Steps 1-10:

DISASSEMBLY AND ASSEMBLY

DISASSEMBLY SERVICE POINT

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> SELF-LOCKING NUT REMOVAL

ASSEMBLY SERVICE POINTS

>>A<< FIELD CORE ATTACHMENT

Line up the pin hole on the compressor unit with the field core projection and attach.

>>B<< SNAP RING INSTALLATION

Using snap ring pliers, fit the snap ring so that the snap ring's tapered part is on the outside.

>>C<< SELF-LOCKING NUT INSTALLATION
Using a special tool, as when removing the nut, secure the armature and tighten the self-locking nut.

>>D<< AIR GAP ADJUSTMENT

Check whether or not the air gap of the clutch is within the standard value.

Standard value: 0.3 - 0.5 mm (0.012 - 0.020 inch)

NOTE: If there is a deviation of the air gap from the standard value, make the necessary adjustment by adjusting the number of shims.