Remove, install coolant thermostat · ar2010p2460pr · Mercedes-Benz WIS

AR20.10-P-2460PR

Remove, install coolant thermostat

23.5.00

ENGINE 111.951 in MODEL 203.035 /235 /735

ENGINE 111.955 in MODEL 203.045 /245 /745

P20.10-2023-06

1 Front engine trim panel

2 Left engine trim panel

3 Coolant line (radiatorcoolant thermostat housing)

4 Coolant line (coolant thermostat housingexpansion reservoir)

5 Bolts

6 Cover

7 O-ring

 	Removing, installing
1	Drain coolant	 At radiator	AR20.00-P-1142PR
2	Take off front engine trim panel (1)
3	Take off left engine trim panel (2)	 Only front part.
4	Disconnect coolant line (3)	Installation: Inspect condition of coolant line and hose clamp, replace if necessary.
			*WH58.30-Z-1001-06A
			*WH58.30-Z-1002-06A
5	Detach coolant line (4)	Installation: Inspect condition of coolant line and hose clamp, replace if necessary.
			*WH58.30-Z-1001-06A
			*WH58.30-Z-1002-06A
6	Unscrew bolts (5)		*BA20.10-P-1004-01B
7	Remove cap (6) together with coolant thermostat	 The coolant thermostat must not be taken out of the cap (6). It will be destroyed if this is done. Re-installation is not possible. The cap (6) is supplied together with the coolant thermostat for repair purposes.
		Installation: Replace O-ring (7).
8	Install in the reverse order
9	Inspect cooling system for leaks		AR20.00-P-1010P
Danger!	Risk of accident from vehicle starting off by itself when engine running. Risk of injury from contusions and burns if you insert your hands into the engine when it is started or when it is running	Secure vehicle to prevent it moving off. Wear closed and close-fitting work clothes. Do not touch hot or rotating parts.	AS00.00-Z-0005-01A
10	Run engine and inspect for leaks

 Coolant pump, coolant thermostat

Commercially available tools

Number	Designation
WH58.30-Z-1001-06A	6 mm socket hexagon on flexible shaft for hose clamps with worm drive
WH58.30-Z-1002-06A	7 mm socket hexagon on flexible shaft for hose clamps with worm drive

ar2000p1010p Inspect cooling system for leaks
ar2000p1142pr Drain/pour in coolant
ar2000p1142pr
as0000z000501a Risk of accident from vehicle starting off by itself when engine running. Risk of injury (bruises and burns) resulting from working on the engine while it is being started or when it is running.