Removing and installing condenser - ra83001400538x(0538)

Model 140, A. Engines 104, 119 up to 05/91, B. Engines 104, 119, 120 as of 06/91 

1. Engines 104, 119 up to 05/91 
   Fig 1: Identifying Condenser Components (1 Of 2)

   Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

   Lower engine compartment covering	Remove.
   Air conditioner	Drain (recycling).
   Front central stiffening member	Remove (7 screws).
   Protective grille	Remove, 2 clips (1), 2 screw clips (2).
   Upper pressure line	Unscrew at condenser and seal off openings (parts set 140 830 01 27).
   2 lip seals	Pull off.
   Electrical connectors (M4x1 and M4x2)	Disconnect and remove cable (4 clips).
   Jack up vehicle	Open left-hand opening in bumper.
   Retainer for pressure line	Remove (1 nut).
   Pressure line on condenser	Remove and seal off openings.
   Lower vehicle	and unscrew 2 screws (3) holding condenser.
   Condenser	Lift out.
   3 screws (4)	Unscrew.
   Bracket with auxiliary fans	Remove.
   Install	In reverse sequence, lubricate the connection thread with compressor oil (refer to note).
   Receiver dehydrator	Replace (Removing, installing and replacing receiver dehydrator  ).
   Air conditioner	Evacuate, refill, check function and check for leaks; run engine at idle speed only in the first 4 minutes.
   	NOTE: If the condenser is not reinstalled immediately, flush out the condenser with nitrogen. Then seal off the connections with plugs. When renewing the condenser fill with 20 cm3 compressor oil
   	After completing the work: Erase fault memory in the control unit (Diagnosis manual - air conditioning). Parts which have come into contact with compressor oil for R12 or R134a may only be installed in systems operating with the same refrigerant.

   TIGHTENING TORQUES IN NM
   
   

   Lower line to condenser	24 ± 4
   Upper line to condenser	17 ± 3

2. Engines 104, 119 and 120 as of 06/91 

Fig 2: Identifying Condenser Components (2 Of 2)

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Battery	Disconnect negative pole.
Air conditioner	Empty (recycling)
Protective grille	Remove, 2 clips (1), 2 screw clips (2).
Electrical plug connection (M4 X 1, M4 X 2)	Disconnect and remove cable (4 clips).
Raise vehicle	Open the left opening in the bumper.
Bracket for pressure line	Remove (1 nut)
Pressure line for condenser	Remove and seal openings (parts set 140 830 01 27).
Upper pressure line	Unscrew at condenser and seal openings (parts set 140 830 01 27).
Radiator with condenser	Remove (20-4200) .
3 bolts (4)	Unscrew.
11 clips (94)	Press out and remove frame (90).
Connections M4 X 1, M4 X 2	Unclip.
5 bolts (84)	Unscrew and remove auxiliary fan.
2 bolts (3)	Unscrew and remove condenser from radiator.
Install	In reverse sequence, lubricating the connection thread with compressor oil (refer to note)
Receiver dehydrator	Renew (Removing, installing and replacing receiver dehydrator  ).
Air conditioner	Evacuate, refill, check function and check for leaks; run engine at idle speed only in the first 4 minutes.
	NOTE: If the condenser is not reinstalled immediately, flush out the condenser with nitrogen. Then seal the connector with plugs. When renewing the condenser, fill it with 20 cm3 compressor oil.
	Parts which have come into contact with compressor oil for R12 or R134a may only be installed in systems operating with the same refrigerant.