Remove/install expansion reservoir · ar2030w4950a · Mercedes-Benz WIS

Designation

Engine
900.9

Engine
902.9

Engine
904.9, 906.9

BA20.20-N-1006-01D

Nut securing coolant expansion reservoir to firewall

AR20.30-W-4950A

Remove/install expansion reservoir

23.11.10

ENGINES 900.9 in MODELS 375.1, 970, 972, 975, 976

ENGINES 902.9 in MODELS 375.1, 970, 972, 974, 975, 976

ENGINES 904.9 in MODEL 374, 375.1, 673, 674, 676, 958.0, 970, 972, 975, 976

ENGINES 906.9 in MODELS 374, 958.0, 970, 972, 974, 975, 976

ENGINES 924.9 in MODELS 958.0, 970, 972, 974, 975, 976

ENGINES 925.9 in MODELS 970, 972, 974

ENGINES 926.9 in MODEL 958.0

W20.30-0003-09

1 Expansion reservoir

2 Nut

3 Electrical connection (coolant fluid level sensor)

6 Oil filler pipe

7 Retaining hook

4 Coolant hose

5 Hose clamp

 	Remove/install
1	Drain coolant at radiator	Engine 904.9, 906.9	AR20.00-W-1142C
		Engines 900.9, 902.9, 924.9, 925.9, 926.9	AR20.00-W-1142J
2	Remove trim grille
3	Disconnect coolant fluid level sensor electrical connection (3)
4	Remove coolant hoses (4) from expansion reservoir (1)
5	Detach oil filler pipe (6) from fitting on the expansion reservoir (1)
6	Remove expansion reservoir (1)	 Unhook expansion reservoir (1) upwards.
		 Installation: Hook in retaining hook (7) on the firewall opening.
			*BA20.20-N-1006-01D
7	Install in the reverse order
	Checking
8	Check connections on coolant hose (4) for leaks

 Radiator, coolant hoses

 Radiator, coolant hoses