| | | Care Point: | If there are any concerns regarding flushing or oil level adjustment, contact McLaren Aftersales Support.
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| Care Point: | Do not flush the drier, compressor or distribution unit.
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| Care Point: | Do not use flammable fluids.
Wear safety goggles.
Wear chemical resistant gloves.
Use approved fluids only. CFCs R-11,113 or 115 and Methyl Chloroform also known as 1,1,1, Trichloroethane are not acceptable.
Fluids designated for AC flushing should be used and may be either solvent or lubricant based. Fluids must meet regional specification to insure compatibility with refrigerant, oil and any materials used in the HVAC system.
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| 1. | If the system is contaminated, it must be flushed with approved fluids before new components are installed.
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| 2. | If replacing a component in the HVAC system, the amount of oil in the system must be returned to previous level.
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| 3. | The amount of oil the system must hold can be found on a label located on the compressor.
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| | | Care Point: | Additional oil can either be added with the air conditioning device, or by adjusting the oil quantity in a new compressor if one is fitted.
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| Care Point: | Do not adjust the oil level in the compressor if it is not being replaced.
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| 4. | The following table provides a guide as to how much oil must be added in addition to the amount removed during evacuation.
Component
| fl.oz.
| cc
|
Major system leak
| 1.5
| 45
| Minor system leak
| 0.5
| 15
| Condenser
| 1.0
| 30
| Drier
| 0.5
| 15
| Distribution unit
| 1.0
| 30
| Other hoses or hard lines
| 0.5
| 15
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| | | Care Point: | Compressor oil will only require adjustment if it is replaced.
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| Care Point: | Putting in the wrong quantity of compressor oil can damage the refrigerant compressor.
Oil will settle inside components, not all will have been extracted during evacuation.
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| 5. | Remove oil plug located on the outer housing and drain oil.
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| 6. | Drain oil from the fluid ports by turning the compressor shaft clockwise.
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| 7. | Measure and record the total amount drained.
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| 8. | If other components have been replaced adjust this figure dependant by the values in the table above.
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| 9. | Remove drain plug from new compressor, draining all oil as above.
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| 10. | Re-fill new compressor with amount of oil drained from old compressor, including any adjustments required (See example below).
Component
| Oil (cc)
|
Drain from old compressor
| 44
| Remaining in old drier
| 15
| Remaining in old Condenser
| 30
| Amount to be added
| 89
| New compressor fill amount (before drain)
| 236
| Amount to re-fill new compressor
| 147
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| | | Care Point: | Make sure seal and O-ring are clean and not damaged.
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| 11. | Install Oil drain plug. 17 Nm
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| 12. | Vacuum air conditioning system.
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| 13. | Check air conditioning system for leakage.
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| | | Care Point: | IMPORTANT: Make sure the correct HVAC refrigerant fluid is used.
Refer to vehicle label (located on the rear frame) and / or bulletin 13 P 001 - 13 P 001 - European Directive 200640EC Introduction of Refrigerant R1234yf
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| Care Point: | Make sure that the correct quantity (amount removed when evacuating system) of compressor oil is put back into the system when filling with refrigerant. Failure to do so can cause damage to the HVAC compressor.
Add additional oil either by the air conditioning device, or by adjusting the oil quantity in a new compressor if one is fitted (as above).
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| 14. | Fill air conditioning system.
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| 15. | Disconnect air conditioning device.
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| 16. | Install components in reverse order.
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| 17. | Check functionality.
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