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crwdns2944351:0crwdnd2944351:0Mercedes W123 Diesel Thermostat Replacementcrwdnd2944351:0crwdne2944351:0

crwdns2933797:0iRobotcrwdnd2933797:0crwdne2933797:0

crwdns2936043:0crwdne2936043:0 crwdns2933505:0crwdne2933505:0 iRobot

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No device
Type
replacement
Thing
Thermostat
Title
Mercedes W123 Diesel Thermostat Replacement
Introduction
The thermostat on your car regulates how much coolant flows through the radiator. At first, none is allowed through; this helps the engine warm up faster to the proper operating temperature.As your engine warms the thermostat begins to open. When it reaches its proper operating temp the thermostat is fully open, allowing full coolant flow. Assuming the rest of your cooling system is in good order this full flow of coolant will keep your engine at or near the proper operating temp at all times, except under the most extreme loads.However, a failing thermostat will cause some serious heating issues on your car. In the best case scenario it will stay open, which means your car may never come up to full temp. This won't kill your engine right away, however it's bad for it in the long term. In the worst case, it will not open all the way, which could lead to your engine overheating. This could destroy your engine.So if you notice heating issues and believe it's your thermostat, it's fairly easy to replace.As always when dealing with automotive fluids you should wear the proper protective gear, such as gloves and glasses. Also be sure to catch the fluid properly and dispose of it safely and in an environmentally sound way!
Time Required Min
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Time Required Max
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Imageid
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Difficulty
Moderate
Conclusion
To reassemble your device, follow these instructions in reverse order.
Author
iRobot
Public
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crwdns2943215:0crwdne2943215:0

  • 10mm Socket x1 added.
  • Socket Wrench x1 added.
  • Penetrating Lubricant x1 added.

crwdns2943213:0crwdne2943213:0

  • W123 Diesel Thermostat x1 part # 6172001815 added.

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  • Community-Contributed Guide added.