Page 1133 - Workshop Manual - Aumark (BJ1051)

51-41
Heater and AC-Refrigerant oil

Replacement

1. Discharge the refrigerant (refer to “Chapter 51 Heater and AC-Refrigerant,
Replacement”)
2. Discharge the refrigerant oil
(a). Disassemble the compressor (refer to “Chapter 51 Heater and AC-compressor,
Replacement”)
(b). Pour out refrigerant oil from compressor.
3. Fill in refrigerant oil
(a). Install compressor (refer to “Chapter 51 Heater and AC-compressor, Replacement”).
(b). Fill in refrigerant oil according to specified quantity.
Standard value: 180ml
z Normally for new AC system, it does not need to fill extra refrigerant oil, because
inside of new compressor there is stored all necessary refrigerant oil required by the
complete system (14%-18% of the refrigerant inside of AC system). It will need
filling refrigerant oil if the AC system is repaired more than two times or there is
refrigerant oil deficient caused by other reasons. Supplement some refrigerant oil
after the replacement of system.
Name of replaced part Refrigerant oil quantity to be supplemented
Compressor It does not need filling in grease because there are 180ml grease brought by
compressor
Evaporator 40 ~ 60 ml
Liquid reservoir 10 ~ 30 ml
Condenser No oil leak mark 0 ~ 30 ml

There is oil leak mark 40 ~ 60 ml
Hose No oil leak mark - 51
There is oil leak mark 40 ~ 60 ml
Air leak of the system No oil leak mark -
There is oil leak mark 80ml

Replace the pipe of complete system 40 ~ 60 ml

4. Fill in refrigerant (refer to “Chapter 51 Heater and AC-Refrigerant, Replacement”)
5. Run engine to normal working temperature
6. Check if the refrigerant is leaking (refer to “Chapter 51 Heater and AC-Refrigerant,
Inspection”)

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