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W114115, W116, W123, W124, W126

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Start WARSZTAT Silnik OM617 Engine cooling Removal and installation of coolant thermostat

Removal and installation of coolant thermostat

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20—110 Removal and installation of coolant thermostat
 
 

 
 
Tightening torques
Type
Nm
 
 

 
 
Screws for housing cover coolant thermostat
9-11
 
 

 
 
116
6-10
 
 

 
 
Drain plug for radiator
 
 

 
 
123, 126
1.5-21)
 
 

 
 
M This torque can be obtained by means of a washer or a coin.
 
 

 
 
Special tools
 
 

 
 
Tester for cooling system
om617 - 0430-1.jpg
001 589 48 21 00
 
 
Radiator cap with hose for leak test
605 589 00 25 00
 
 
7 mm socket on flexible shaft for hose clamps
123 589 12 09 00
 
 

 
 
Removal
om617 - 0430-2.jpg
 
 
1    Drain coolant (20-010).
2   Disconnect hose on coolant thermostat housing cover (arrow).
3   Unscrew coolant thermostat housing cover.
 
 

 
 
4 Remove coolant thermostat with seal out of cover.
 
 

 
 
5 Check seal for damage and replace, if required.
 
 

 
 
20.8-110/1 F2
 
 

 
         

 

       
 

 
 
Installation
om617 - 0431-1.jpg
 
 
Note: Replace damaged seal.
 
 
6 Place seal on coolant thermostat.
 
 

 
 
om617 - 0431-2.jpg
tss-w-m
 
 

 
 
7    Install coolant thermostat with seal in such a manner that arrow on thermostat points upwards.
8   Screw on coolant thermostat housing cover, tighten to 9—11 Nm and connect hose.
om617 - 0431-3.jpg
 
 

 
 
9   Add coolant (20-010).
10   Pressure-test cooling system with tester (approx. 1 bar gage pressure).
 
 

 
 
20.8-110/2 F2