AR83.30-P-5200Q Remove/Install AC Housing
AR83.30-P-5200Q Remove/Install AC Housing
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 degrees C. Open cap slowly and release the pressure. Do not pour coolant into beverage bottles.
- Wear protective gloves, protective clothing and eye protection.
- Risk of explosion through welding or soldering work on the enclosed air conditioning system. Risk of poisoning through inhalation of overheated refrigerant vapor. Risk of injury from skin and eye contact with liquid refrigerant.
- Do not perform any welding work on the enclosed air conditioning system and in its immediate vicinity. No fire or naked flame.
- Wear safety glasses and protective gloves; work in well-ventilated premises only. All repair work on the air conditioning system's circuit to be performed on drained system only.
CAUTION: Protect the air conditioning system's circuit and components against moisture during repair work.
1 Open engine hood
2 Extract pressure in cooling system
3 Detach lower engine compartment paneling
NOTE: Front paneling.
4 Drain coolant from radiator
5 Move driver and front-passenger seats back as far as they will go
DANGER:
- Risk of explosion from explosive gas. Risk of poisoning and caustic burns from swallowing battery electrolyte. Risk of injury with caustic burns to eyes and skin from battery electrolyte or from handling damaged lead-acid batteries
- No fire, sparks, naked flames or smoking.
- Wear acid-resistant gloves, clothing and eye protection. Pour battery electrolyte only into suitable and appropriately marked containers.
6 Remove instrument panel bracket
7 Remove accelerator pedal
8 Fold back left front floor lining
NOTE: Air duct to left rear compartment (14) must be accessible.
9 Remove air duct to left rear compartment (14)
10 Fold back right front floor lining
NOTE: Air duct to right rear compartment (15) must be accessible.
11 Remove air duct to right rear compartment (15)
12 Remove desiccant cartridge
CAUTION: Installation: the desiccant cartridge must be replaced each time the refrigerant circuit is opened. Note additional oil filling capacity after replacing components.
13 Unscrew nut (1)
- Nut to expansion valve: 8 N.m
14 Detach pressure lines with retaining plate (2
CAUTION: Plug openings.
See "Special Tools" below.
CAUTION: Installation: replace O-rings (wet with compressor oil).
15 Detach hose clamps (3) from filler neck
CAUTION: Installation: mount hose clamp (3) using hose damp pliers at an angle of 45 degrees (Fig. A).
- Hose clamp pliers (length 210 mm; tensioning range 80 mm)
See "Commercially Available Tools" below.
16 Detach hot-water supply hose (4)
CAUTION: Seal opening.
See "Special Tools" below.
17 Detach hose clamp (5) from filler neck
CAUTION: Installation: mount hose clamp (5) using hose clamp pliers at an angle of 45 degrees (Fig. B).
- Hose clamp pliers (length 210 mm; tensioning range 80 mm)
See "Commercially Available Tools" below.
18 Detach hot-water return flow hose (6)
CAUTION: Seal opening.
See "Special Tools" below.
19 Remove condensed water drainage hose (7)
20 Detach coupling (8) from evaporator temperature sensor (B10/6)
21 Remove evaporator housing slightly from firewall
22 Remove cockpit wiring harness (9) from evaporator housing
23 Remove evaporator housing
- MB long-term grease
24 Install in the reverse order
25 Read diagnostic trouble code memory and erase
26 Normalize actuator motors
27 Perform basic programming.
Special Tools
Set of Plugs, P/N# 129 589 00 91 00:
Commercially Available Tools
Commercially Available Tools:
