Remove/install fan unit - AR20.40-P-5050RK

ENGINE 157, 276, 278 in MODEL 231 

Shown on engine 278 

Fig 1: Fan Unit Remove/Install Components - Shown On Engine 278 (1 Of 3)

Courtesy of MERCEDES-BENZ USA

Fig 2: Fan Unit Remove/Install Components - Shown On Engine 278 (2 Of 3)

Courtesy of MERCEDES-BENZ USA

Fig 3: Fan Unit Remove/Install Components - Shown On Engine 278 (3 Of 3)

Courtesy of MERCEDES-BENZ USA

Shown on ENGINE 276 

Fig 4: Fan Unit Remove/Install Components - Shown On Engine 276

Courtesy of MERCEDES-BENZ USA

	Remove/install
1	Remove both engine air intake ducts (1)
2	Unclip cable (2) for hood unlocking
3	Remove weatherstrip (3) in front area
4	Remove screw/bolts (4)
5	Remove left and right expansion clip (5)	Engine 157, 276.9, 278 in model 231 Engine 276.8 in model 231 up to model year 2016
6	Remove cooler holder (6)
7	Remove front section of lower engine compartment paneling	Engine 157, 276.9, 278 in model 231 Engine 276.8 in model 231 up to model year 2016	AR61.20-P-1105RK
8	Remove coolant hose (7) from fan unit (8)	Engine 157, 278 in model 231 Engine 276.9 in model 231
9	Disconnect Electrical connection (9)	Engine 157, 278 in model 231 Engine 276.8 in model 231 as of model year 2016
10	Detach vacuum hose (10) from radiator shutters adjuster (11)	Engine 276.9 in model 231
11	Disconnect electrical connection (12)	Engine 276.9 in model 231
12	Disconnect electrical connection (13)	Engine 276.8 in model 231 up to model year 2016 Engine 276.9 in model 231
13	Unclip air duct segment (14) from fan unit (8)
14	Push away clamps on the left and right on fan unit (8) and remove fan unit (8) upwards	Ensure that fan unit (8) are seated correctly.
15	Install in the reverse order