Operation CHARM: Car repair manuals for everyone.
Home >> Mercedes Benz >> 2000 >> ML 320 (163.154) V6-3.2L (112.942) >> Repair and Diagnosis >> Heating and Air Conditioning >> Compressor HVAC >> Service and Repair
Manuals through 2025 now available!

Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.

LEMON is the spiritual successor to CHARM, I recommend you try it!

Link: lemon-manuals.la or lemon-manuals.org.ua

(Some people have issue connecting. LEMON is investigating. For now, use Firefox or change your DNS server)

Or, hide this message: temporarily or permanently

Compressor HVAC: Service and Repair



Remove And Install Refrigerant Compressor






DANGER:
- Risk of explosion from welding or soldering work on dosed air conditioning system. Risk of poisoning from inhaling overheated refrigerant vapors. Risk of injury from skin and eye contact with liquid refrigerant.
- Do not carry out any welding work on the closed air conditioning system or in the surrounding area. No smoking or open flames. Wear eye protection and protective gloves. Work only in well ventilated areas.
- Carry out repair work on the air conditioning system circuit only after the system has been discharged.

CAUTION: Protect air conditioning circuit and components from moisture when carrying out repair work.

1 Discharge air conditioning system

NOTE: Installation: Evacuate, refill air conditioning system and check for proper operation and tightness.

2 Remove poly V-belt
3 Unscrew bolt (1) securing low-pressure refrigerant line (2) to refrigerant compressor (6)
- Detach low-pressure refrigerant line (2) from refrigerant compressor (6).

NOTE: Installation: Replace sealing rings and moisten with compressor oil.

4 Unscrew bolt (3) securing high-pressure refrigerant line (4) to refrigerant compressor (6)
5 Disconnect connector (A9x1) from refrigerant compressor (6)

NOTE: Installation: Replace sealing rings and moisten with compressor oil.

6 Unscrew bolts (5) securing refrigerant compressor (6) to crankcase
7 Remove refrigerant compressor (6) from below

NOTE: Installation: Pay attention to additional oil filling capacity when replacing fluid reservoir.

8 Install in the reverse order.
9 Remove receiver/drier

CAUTION: The fluid reservoir must be replaced each time the refrigerant compressor is removed and installed.

NOTE: Installation: Pay attention to oil filling capacity when replacing fluid reservoir.
pro multis · About Operation CHARM