REFRIGERANT OIL & REFRIGERANT SPECIFICATIONS
Note. For compressor application, see COMPRESSOR APPLICATIONS & BODY DESIGNATIONS at the end of this article. DO NOT exceed A/C system refrigerant oil capacity when servicing system. See REFRIGERANT OIL & REFRIGERANT SPECIFICATIONS at the end of this article.
Note. Due to late changes, always refer to underhood A/C Specification Label in engine compartment or A/C compressor label while servicing A/C system. If A/C Specification Label and specifications in table differ, use label specifications.
| Application | (2) Oil: Ounces | Refrigerant: Ounces |
|---|---|---|
| "A" Body | 9.0 | 38 |
| "B" Body | 6.0 | 50 |
| "C" Body | 8.0 | 38 |
| "D" Body | 6.0 | 50 |
| "E" & "K" Bodies | 8.0 | 38 |
| "F" Body (3) | 8.0 | 32 |
| "H" Body | 8.0 | 38 |
| "J" Body | 8.0 | 36 |
| "L" Body | 8.0 | 42 |
| "N" Body | 8.0 | 42 |
| "W" Body | 9.0 | 36 |
| "Y" Body | 8.0 | 36 |
| "Z" Body (Saturn) | 6.6 | 36 |
| (1) Total system capacity, unless otherwise noted. (2) Body codes are determined by fourth character of VIN code. (3) Models use PAG Refrigerant Oil (Part No. 12345923) and R-134a refrigerant. | ||
| (1) | Total system capacity, unless otherwise noted. |
| (2) | Body codes are determined by fourth character of VIN code. |
| (3) | Models use PAG Refrigerant Oil (Part No. 12345923) and R-134a refrigerant. |
REFRIGERANT OIL & REFRIGERANT CAPACITY (CARS) (1)
| Application | (2) Oil: Ounces | Refrigerant: Ounces | ||
|---|---|---|---|---|
| "C" & "K" Series | ||||
| Pickup | 8.0 | 40 | ||
| Crew Cab & Utility | 8.0 | 48 | ||
| Suburban | ||||
| With Rear Unit | 11.0 | 68 | ||
| Without Rear Unit | 8.0 | 48 | ||
| "G" Series | ||||
| With Rear Unit | 11.0 | 68 | ||
| Without Rear Unit | 8.0 | 48 | ||
| "L" & "M" Series | ||||
| With Rear Unit | 10.5 | 60 | ||
| Without Rear Unit | 8.0 | 48 | ||
| "S" & "T" Series | ||||
| HR100T Compressor | 8.0 | 40 | ||
| V5 Compressor | 9.0 | 40 | ||
| "U" Series (3) | ||||
| With Rear Unit | 11.0 | 56 | ||
| Without Rear Unit | 8.0 | 42 | ||
| (1) Series codes are determined by fifth character of VIN code. (2) Total system capacity, unless otherwise noted. (3) Models use PAG Refrigerant Oil (Part No. 12345923) and R-134a refrigerant. | ||||
| (1) | Series codes are determined by fifth character of VIN code. |
| (2) | Total system capacity, unless otherwise noted. |
| (3) | Models use PAG Refrigerant Oil (Part No. 12345923) and R-134a refrigerant. |
REFRIGERANT OIL & REFRIGERANT CAPACITY (LIGHT TRUCKS & VANS) (1)
COMPRESSOR APPLICATIONS
Note. Due to late changes, always refer to underhood A/C Specification Label in engine compartment or A/C compressor label while servicing A/C system. If A/C Specification Label and specifications differ, use label specifications.
| Application | Compressor |
|---|---|
| "A" & "W" Bodies | Harrison HR6-HE 6-Cyl. or Harrison V5 5-Cyl. |
| "B" & "D" Bodies | Harrison HR100T/HR110-MD 4-Cyl. |
| "C", "E", "F", "H" & "K" Bodies | Harrison HR6-HE 6-Cyl. |
| "J", "L" & "N" Bodies | Harrison V5 5-Cyl. |
| "Y" Body | Nippondenso 10PA20 10-Cyl. |
| "Z" Body (Saturn) | Zexel Rotary Vane |
| (1) Body codes are determined by fourth character of VIN code. | |
| (1) | Body codes are determined by fourth character of VIN code. |
COMPRESSOR APPLICATIONS (CARS) (1)
| Application | Compressor | |
|---|---|---|
| "C" & "K" Series | Harrison HR110T 4-Cyl. | |
| "G" Series | ||
| Except 6.2L Diesel | Harrison HR6-HE 6-Cyl. | |
| 6.2L Diesel | Harrison A6 6-Cyl. | |
| "L" & "M" Series | Harrison HR6-HE 6-Cyl. | |
| "S" & "T" Series | Harrison HR100T 4-Cyl. or Harrison V5 5-Cyl. | |
| "U" Series | Harrison HR6-HE 6-Cyl. or Harrison V5 5-Cyl. | |
| (1) Series codes are determined by fifth character of VIN code. | ||
| (1) | Series codes are determined by fifth character of VIN code. |
COMPRESSOR APPLICATIONS (LIGHT TRUCKS & VANS) (1)
BODY DESIGNATIONS
| Body Designation (1) | Model |
|---|---|
| "A" Body | Century, Cutlass Ciera & Cutlass Cruiser |
| "B" Body | Caprice & Roadmaster |
| "C" Body | DeVille, Ninety-Eight & Park Avenue |
| "D" Body | Fleetwood |
| "E" Body | Eldorado & Riviera |
| "F" Body | Camaro & Firebird |
| "H" Body | Bonneville, Eighty-Eight & LeSabre |
| "J" Body | Cavalier & Sunbird |
| "K" Body | Seville |
| "L" Body | Beretta & Corsica |
| "N" Body | Achieva, Grand Am & Skylark |
| "W" Body | Cutlass Supreme, Grand Prix, Lumina & Regal |
| "Y" Body | Corvette |
| "Z" Body | Saturn |
| (1) Body codes are determined by fourth character of VIN code. | |
| (1) | Body codes are determined by fourth character of VIN code. |
BODY DESIGNATIONS (GENERAL MOTORS CARS)
| Model | (1) Designation | |
|---|---|---|
| Astro & Safari | ||
| 2WD | "M" Series | |
| 4WD | "L" Series | |
| Blazer (K), Pickups (C/K), Sierra, Suburban & Yukon | ||
| 2WD | "C" Series | |
| 4WD | "K" Series | |
| Lumina APV, Silhouette & Trans Sport | "U" Series | |
| Blazer (S/T), Bravada, Jimmy, Pickups (S/T), Sonoma & Typhoon | ||
| 2WD | "S" Series | |
| 4WD | "T" Series | |
| Vans | "G" Series | |
| (1) Series codes are determined by fifth character of VIN code. | ||
| (1) | Series codes are determined by fifth character of VIN code. |
BODY DESIGNATIONS (GENERAL MOTORS LIGHT TRUCKS & VANS)
REFRIGERANT OILS
Only NEW, pure, moisture-free refrigerant oil should be used in A/C systems. This oil is highly refined with a very low moisture content. Oil container must be tightly closed when not in use, or moisture from air will be absorbed into refrigerant oil.
Refrigerant R-12 based systems use mineral oil, while R-134a systems use synthetic/Polyalkylene Glycol (PAG) oil. Using a mineral oil based lubricant with R-134a systems will result in A/C compressor failure due to lack of proper lubrication.
Use ONLY specified oil for the appropriate system and A/C compressor. Always check the underhood A/C specification label or A/C compressor label before adding refrigerant oil to A/C compressor/system. The following types of R-134a refrigerant oil are currently available.
GM
PAG Refrigerant Oil (12345923)
Note. Synthetic/PAG oil absorbs moisture very rapidly, 2.3-5.6 percent by weight as compared to a mineral oil absorption rate of .005 percent by weight.
DISCHARGING SYSTEM
If compressor has stem-type service valves, it can be isolated and removed without discharging entire system. Otherwise, discharge A/C system 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 loosening or tightening fittings. Some refrigerant lines are connected with a coupling. Special tools may be required to disconnect lines. Cap all openings as soon as lines are removed. DO NOT remove caps until ready to connect lines and fittings.
Note. All R-134a based systems use 1/2-16 ACME threaded fittings. Ensure all replacement parts match the connections of the system being worked on.
CONNECTING LINES & FITTINGS
Always use NEW gasket or "O" ring when connecting lines or fittings. Coat "O" ring with refrigerant oil, and ensure it is not twisted during installation. To prevent damage to lines and fittings, always use 2 wrenches.
PLACING SYSTEM IN OPERATION
After component service or replacement has been completed, evacuate system thoroughly with a vacuum pump. Charge system with proper amount of refrigerant. Perform leak test. After system has been leak tested, check system operation.
Note. A/C systems normally will not need additional refrigerant oil unless oil loss has occurred due to ruptured lines, leaking compressor seals, compressor overhaul or component replacement.
HARRISON A-6 6-CYLINDER
- Operate system for several minutes to stabilize system. Turn engine off. Discharge system using approved refrigerant recovery/recycling equipment, and remove compressor. Remove drain plug. Drain oil, and measure amount drained.
- If no oil leak exists, add amount of oil drained plus one ounce. If A/C components are replaced, add specified amount of refrigerant oil to system. See «A-6 COMPONENT REFRIGERANT OIL CAPACITIES»(/buick/roadmaster/viii-1991-1996/remont/general-servicing-all-makes/#ac-compressor-refrigerant-oil-checking) table. Install drain plug and compressor. Evacuate and recharge system. Perform leak test.
| Component | Ounces |
|---|---|
| Accumulator | 2 |
| Condenser | 1 |
| Evaporator | 3 |
A-6 COMPONENT REFRIGERANT OIL CAPACITIES
HARRISON HR6-HE 6-CYL, HR100T, HR110-MD & HR110T 4-CYL, & V5 5-CYL
- Operate system for several minutes to stabilize system. Turn engine off. Discharge system using approved refrigerant recovery/recycling equipment. Remove compressor. Drain and measure oil.
- If no oil leaks exist and more than one ounce is drained, add drained amount using NEW oil. If less than one ounce is drained, add 2 ounces of NEW oil.
- If replacing A/C components, add specified amount of refrigerant oil to system. See «HR6-HE, HR100T, HR110-MD, HR110T & V5»(/buick/roadmaster/viii-1991-1996/remont/general-servicing-all-makes/#ac-compressor-refrigerant-oil-checking) COMPONENT REFRIGERANT OIL CAPACITIES table. Install drain plug and compressor. Evacuate and recharge system. Perform leak test.
| Component | Ounces |
|---|---|
| Accumulator | 3.5 |
| Condenser | 1.0 |
| Evaporator | 3.0 |
HR6-HE, HR100T, HR110-MD, HR110T & V5 COMPONENT REFRIGERANT OIL CAPACITIES
NIPPONDENSO 10PA20 10-CYLINDER
- Slowly discharge system using approved refrigerant recovery/recycling equipment. Remove A/C compressor, and drain compressor oil. Measure amount drained, and discard oil.
- If no leaks exists, add drained amount plus one ounce. If excessive leak exists, remove accumulator and drain oil. Measure amount drained, and discard oil.
- If amount drained is less than 3 ounces, add 3 ounces. If amount drained is more than 3 ounces, add drained amount. If system components are replaced, add specified amount. See «10PA20 COMPONENT REFRIGERANT OIL CAPACITIES»(/buick/roadmaster/viii-1991-1996/remont/general-servicing-all-makes/#ac-compressor-refrigerant-oil-checking) table.
| Component | Ounces |
|---|---|
| Compressor | (1) |
| Condenser | 1 |
| Evaporator | 3 |
| (1) Drain oil from compressor, and then add drained amount plus one ounce. | |
| (1) | Drain oil from compressor, and then add drained amount plus one ounce. |
10PA20 COMPONENT REFRIGERANT OIL CAPACITIES
ZEXEL ROTARY VANE
- Slowly discharge system using approved refrigerant recovery/recycling equipment. Remove A/C compressor. Install compressor oil drain Adapters (SA9149AC-5 and SA9149AC-6) to service ports. Drain compressor oil. Measure amount drained, and discard oil.
- Add proper amount of refrigerant oil to compressor (total system capacity minus amount retained in components that have not been replaced). See «ZEXEL COMPONENT REFRIGERANT OIL CAPACITIES»(/buick/roadmaster/viii-1991-1996/remont/general-servicing-all-makes/#ac-compressor-refrigerant-oil-checking) table. Install compressor. Evacuate and recharge A/C system. Perform leak test.
| Component | Ounces |
|---|---|
| Condenser | 1 |
| Evaporator | 3 |
| Receiver-Drier | 1 |
ZEXEL COMPONENT REFRIGERANT OIL CAPACITIES
See also:
• A-6 COMPONENT REFRIGERANT OIL CAPACITIES