If you have a W116 or W126 300SD or a turbo 1981 to 1985 5 cylinder W123 Diesel you must pay attention to your oil cooler hoses. If one of these hoses fail you will destroy the engine unless you are in the habit of looking at your oil pressure gauge every 5 minutes while driving. If you see any signs of wetness or leaks change them before they fail.
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Product Details
This is something you can do yourself but it is not a begninner D.I.Y. job. These detailed instructions walk you through changing your oil cooler hose(s). Multiple pictures provide a visual aid to help you complete this job. 6 pages in length.
We highly recommend you have our special wrenches on hand to change these hoses. Also, if you are going to the trouble of replacing the hoses it is a good time to replace the oil filter housing gasket. This is one of the more common areas where these diesel engines leak oil.
PLEASE NOTE: We offer free written instructions when you purchase one or more of the hoses / lines from us. The written instructions are exactly the same as this PDF.
For direct links to related parts mentioned see below:
How to view this on-demand Manual:
Once you complete the purchase of this manual you will be able to download it immediately when you are logged in and on your personal account page (click on My Account). The PDFs will show up under My PDF Manuals. You will be allowed three downloads, so please save the file on your machine for backup.
Important note: This PDF may or may not contain all the information you will need to solve your specific problem. Please read the description carefully and make certain it applies to your particular Mercedes. If you are not certain please contact us first. Due to the nature PDF download manuals or instructions we can not issue a refund if you purchase in error or assume it contains information it does not. Please keep in mind that no follow-up technical support is implied or offered after purchase.
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116 123 617 Turbo Diesel Upper Oil Cooler Hose with Instructions
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616 617 Diesel Oil Cooler Line Removal Special 3 Wrench Set
Replacing your oil cooler lines/hoses is a very important maintenance item on your older Mercedes diesel. Getting them on and off though is a different matter!
1977 to 1985 Diesel Special 24 mm Oil Filter Housing Fitting Wrench
NOTE: May be black or chrome depending upon stock on hand. This standard 24 mm combination wrench is specially ground in our shop so that it will hold the fitting on the late 616 and 617 oil filter housing when loosening the oil cooler hose end nut.