A/c Compressor Oil Checking: Other Dodge Cab & Chassis Dakota

ISOLATING COMPRESSOR

Note. For compressor application, see A/C SYSTEM SPECS in AIR CONDITIONING AND HEATING Section.

Note. Only compressors with stem-type service valves can be isolated.

1. Connect manifold gauge set to compressor service valves. Ensure valves on gauge set are closed. Place both valves on compressor in the mid-position. Start engine and operate air conditioning.
2. Slowly turn compressor suction valve clockwise toward closed (front-seated) position. When suction pressure is reduced to zero, turn engine and compressor off and quickly turn suction valve stem inward to the full front-seated position. Turn discharge valve into front-seated position.
3. Loosen oil level plug to release internal pressure in the compressor. Compressor is now isolated from the rest of the system and service valves can be removed from the compressor.

REFRIGERANT OIL

Only new, pure, moisture-free refrigerant oil should be used in air conditioning systems. This oil is highly refined and dehydrated to a point where moisture content is less than 10 parts per million. Oil container must be tightly closed at all times when not in use, or moisture will be absorbed into the refrigerant oil from the air.

DISCHARGING SYSTEM

If compressor has stem-type service valves, it can be isolated and removed without discharging entire system. Otherwise, discharge system completely using approved refrigerant recovery/recycling equipment before loosening any fittings.

DISCONNECTING LINES & FITTINGS

After system is discharged, carefully clean area around all fittings to be opened. Always use 2 wrenches when tightening or loosening fittings to avoid twisting or distorting lines. Some refrigerant lines are connected with a coupling. Special tools are required for disconnecting theses lines. Cap or plug all openings as soon as lines are removed. DO NOT remove caps until immediately before connections are made to prevent entry of air and moisture.

CONNECTING LINES & FITTINGS

A new gasket or "O" ring should be used in all instances when connecting lines or fittings. Coat "O" ring with refrigerant oil and ensure it is not twisted during installation. Always use 2 wrenches to prevent damage to lines and fittings.

CHRYSLER C-171 & C-171/A590 COMPRESSOR OIL CHECKING

1. Slowly discharge system using approved refrigerant recovery/recycling equipment. Disconnect refrigerant hoses at compressor. Remove compressor mounting bolts and remove compressor.
2. Remove suction port on top of compressor and drain oil. When repairing A/C systems with a ruptured hose or condenser, leaking shaft seal or when replacing other components additional oil will need to be added.
3. Add amount of refrigerant oil to compressor to make up total system capacity, minus oil retained in components that have not been replaced. See C-171 & C-171/A590 REFRIGERANT OIL CAPACITIES table.
4. Install compressor. Evacuate and recharge A/C system. Perform leak test.

NIPPONDENSO 6C-17 COMPRESSOR OIL CHECKING

1. Slowly discharge system using approved refrigerant recovery/recycling equipment. Disconnect refrigerant hoses at compressor. Remove compressor mounting bolts and remove compressor.
2. Remove suction port on top of compressor and drain oil. When repairing A/C systems with a ruptured hose or condenser, leaking shaft seal, or when replacing other components additional oil will need to be added.
3. Add amount of refrigerant oil to compressor to make up total system capacity, minus oil retained in components that have not been replaced. See 6C-17 REFRIGERANT OIL CAPACITIES table.
4. Install compressor. Evacuate and recharge A/C system. Perform leak test.

NIPPONDENSO 6E-171 & 6P-148 COMPRESSOR OIL CHECKING

1. Slowly discharge system using approved refrigerant recovery/recycling equipment. Remove A/C compressor. Drain compressor oil. Measure amount drained and discard oil.
2. If amount drained is between 3 and 5 ounces, add drained amount of new refrigerant oil (use only Motorcraft Refrigeration Oil YN-9) into compressor through suction port.
3. If amount drained is less than 3 ounces, add 3 ounces. If amount drained is more than 5 ounces, add 5 ounces. Use new "O" rings on refrigerant lines. Install A/C compressor. Evacuate and recharge system. Perform leak test.

NIPPONDENSO 10PA17 COMPRESSOR OIL CHECKING (LASER & TALON)

Add specified amounts if components are changed. See 10PA17 REFRIGERANT OIL CAPACITIES (LASER & TALON) table.

10PA17 COMPRESSOR OIL CHECKING (EXCEPT LASER & TALON)

1. Slowly discharge system using approved refrigerant recovery/recycling equipment. Disconnect refrigerant hoses at compressor. Remove compressor mounting bolts and remove compressor.
2. Remove suction port on top of compressor and drain oil. When repairing A/C systems with a ruptured hose or condenser, leaking shaft seal, or when replacing other components additional oil will need to be added.
3. Add amount of refrigerant oil to compressor to make up total system capacity, minus oil retained in components that have not been replaced. See 10PA17 REFRIGERANT OIL CAPACITIES (EXCEPT LASER & TALON) table.
4. Install compressor. Evacuate and recharge A/C system. Perform leak test.

SANDEN TR-105 6-CYL COMPRESSOR OIL CHECKING

1. Slowly discharge system using approved refrigerant recovery/recycling equipment. Disconnect refrigerant hoses at compressor. Remove compressor mounting bolts and remove compressor.
2. Remove suction port on top of compressor and drain oil. When repairing A/C systems with a ruptured hose or condenser, leaking shaft seal, or when replacing other components additional oil will need to be added.
3. Add amount of refrigerant oil to compressor to make up total system capacity, minus oil retained in components that have not been replaced. See TR-105 REFRIGERANT OIL CAPACITIES table.
4. Install compressor. Evacuate and recharge A/C system. Perform leak test.

TR-105 REFRIGERANT OIL CAPACITIES

Scheme 12

1. Start and run engine at high idle with A/C on for 15 minutes. Stop engine. Front-seat service valves (if equipped) on compressor and discharge system using approved refrigerant recovery/recycling equipment.
2. Remove compressor oil plug. Look through oil fill plug hole and rotate compressor crankshaft to allow dipstick to be fully inserted. Insert dipstick and measure oil. (Scheme 12) Each mark on dipstick represents one ounce of oil.
3. Determine compressor mounting angle by placing angle gauge across flat areas on the mounting ears. Determine amount of oil needed in accordance with mounting angle. See SD-709 COMPRESSOR OIL CAPACITIES table for specified amount.
4. Correct compressor oil level as necessary. Install compressor oil plug and tighten to 72-108 INCH lbs. (8-12 N.m). Evacuate and recharge A/C system. Perform leak test.