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Home >> Mercedes Benz >> 2017 >> SL65 AMG >> Repair and Diagnosis >> Heating, Ventilation & A/C (HVAC) >> HVAC Control Systems >> Climate Control - 231 Chassis >> Testing & Repair >> Remove/install air conditioner housing - AR83.30-P-5200RK

Remove/install air conditioner housing - AR83.30-P-5200RK

MODEL 231 

Fig 1: Air Conditioner Housing Remove/Install Components (1 Of 5)
G11129386Courtesy of MERCEDES-BENZ USA
Fig 2: Air Conditioner Housing Remove/Install Components (2 Of 5)
G11129387Courtesy of MERCEDES-BENZ USA
Fig 3: Air Conditioner Housing Remove/Install Components (3 Of 5)
G11129388Courtesy of MERCEDES-BENZ USA
Fig 4: Air Conditioner Housing Remove/Install Components (4 Of 5)
G11129389Courtesy of MERCEDES-BENZ USA
Fig 5: Air Conditioner Housing Remove/Install Components (5 Of 5)
G11129390Courtesy of MERCEDES-BENZ USA
DANGER Risk of injury  to skin and eyes suffering scalding from contact with hot coolant spray. Risk of poisoning  from swallowing coolant. Do not open cooling system unless coolant temperature is below 90 °C. Open cap slowly and release the pressure. Do not pour coolant into beverage containers.
Wear protective gloves, protective clothing and safety glasses.
AS20.00-Z-0001-01A
NOTES Notes on coolant   AH20.00-N-2080-01A
REMOVINGINSTALLING Remove/install     
1 Detach suction line (2) and pressure line (3) from expansion valve (1)   AR83.30-P-5520RK 
2 Release pressure in cooling system IMPORTANT To do so, carefully open cap at coolant expansion reservoir and then close again.  
3 Pinch off coolant hoses (4, 5) with pinch-off pliers SPECIAL TOOL Hose clamp pliers Figure
4 Remove coolant hoses (4, 5) from connection fittings (6) at air conditioner housing (A32)    
5 Seal connection fitting (6) on air conditioner housing (A32) NOTES
The connection fittings (6) must be sealed upon removing the air conditioner housing (A32). Otherwise the vehicle interior may be soiled by escaping coolant.
 
6 Remove dashboard   AR68.10-P-1000RK
7 Remove jacket tube   AR46.10-P-0400RK
8 Disconnect electrical connector (10)    
9 Disconnect electrical connectors (12, 14) IMPORTANT To do so, pull out retaining slider (11, 15) in direction of arrow up to end stop.  
10 Disconnect Electrical connection (13)    
11 Disconnect electrical connections (8)    
12 Expose electrical wiring harnesses (9) of instrument panel support (7) INSTALLATION IMPORTANT Route electrical wiring harnesses (9) so that they do not chafe.  
13 Unscrew nuts (17, 19)    
14 Remove screw/bolts (16, 18, 20) TORQUE SPECIFICATION Bolt, crossmember to A-pillar *BA68.10-P-1001-02D 
    TORQUE SPECIFICATION Bolt, crossmember to firewall below windshield *BA68.10-P-1002-02D 
    TORQUE SPECIFICATION Screw/bolt, crossmember strut to transmission tunnel *BA68.10-P-1003-02D 
15 Remove instrument panel support (7) IMPORTANT Use aid of helper.  
16 Remove water drain hoses (21, 22) from air conditioner housing (A32)    
17 Remove air conditioner housing (A32) NOTES
Carefully lift out air conditioner housing (A32). Otherwise components in the vehicle interior may be damaged.
INSTALLATION IMPORTANT Ensure that seal (23) is seated correctly at firewall.
Use aid of helper.
 
18 Install in the reverse order    
19 Fill coolant, bleed cooling system and check it for leaks Model 231 with engine 279 AR09.41-P-6834RKC
    Model 231 with engine 279 AR20.00-P-1142RKC
    Model 231 with engine 157, 276, 278 AR20.00-P-1142RK
CROSSMEMBER BELOW INSTRUMENT PANEL

Number Designation Model 231
BA68.10-P-1001-02D Bolt, crossmember to A-pillar Nm 25
CROSSMEMBER BELOW INSTRUMENT PANEL

Number Designation Model 231
BA68.10-P-1002-02D Bolt, crossmember to firewall below windshield Nm 25
CROSSMEMBER BELOW INSTRUMENT PANEL

Number Designation Model 231
BA68.10-P-1003-02D Screw/bolt, crossmember strut to transmission tunnel Nm 25
Fig 6: Identifying Hose Clamp Pliers (003 589 03 37 00)
G11129391Courtesy of MERCEDES-BENZ USA