Remove/install additional radiator - AR20.20-P-3866SX

ENGINE 275.982 in MODEL 221.179, 216.379 

Fig 1: Identifying Additional Radiator Components

Courtesy of MERCEDES-BENZ USA

	Remove/install
1	Turn steering to the right and detach key from ignition lock
2	Drain coolant at radiator		AR20.00-P-1142H
3	Remove front right fender liner (1)
4	Pry off additional fan connector (A) from left bracket (2) on mounting frame for additional radiator (3) and disconnect
5	Unlock additional fan relay (K9) and detach upwards from bracket
6	Remove bolts (2a), unscrew nuts (2b) and remove left bracket (2) on mounting frame for additional radiator (3)	Installation:  Check for correct seating of the additional radiator (3) in the four rubber supports (3a).
7	Remove additional radiator (3) downwards	Installation:  Check for correct seating of the four rubber supports (3a) in the mounting frame for additional radiator (3).
8	Open retaining clamp (4a) and remove coolant lines (4) at additional radiator (3)	Catch escaping coolant in a container. Installation:  Check coolant lines (4) and spring-loaded band-type clamps for damage; replace if necessary.
9	Remove air ducting (5) and additional fan for coolant (M4/2) from additional radiator (3)	If necessary
10	Install in the reverse order