In a perfect world your diesel would not leak a drop of fluid. Unfortunately, with the age of your vehicle, it may not be economically possible to eliminate every leak. Sometimes you may just have to live with some leaks. Lets face it, these older diesels are 20+ years old and that age takes its toll on gaskets, rubber seals, o-rings and rubber lines.
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Since owners of these cars seem to want to keep driving them, then sooner or later they must deal with some fluid leaks. It has been said the most important thing about maintaining your Mercedes is fluids, fluids, and fluids. Lets make sure those fluids stay where they should.
This guide will take you through the process of diagnosing any and all fluid leaks on the 115, 116, 123 and early 126 chassis diesels up to 1985. Much of the general information will apply to the 201 and 124 chassis diesels as well, although the images are of the other chassis. I cover all the common reasons for engine oil leaks, diesel fuel leaks, engine coolant leaks, transmission fluid leaks, rear end fluid leaks, brake fluid leaks, and even power steering fluid leaks. In each section I will explain the summary action needed to cure each leak. Remember this is a diagnostic guide, not a repair manual as such. If repair requires additional parts or instruction I will direct you to the source.
I have assembled a number of repair kits to deal with fluid leaks. Each kit comes with complete instructions to aid you in doing the repair yourself. I will refer to these kits in each section where applicable. I will also share tips and tricks I have learned over the years to prevent or eliminate many different types of leaks. You may not be able to fix every last one, but together we can fix the serious leaks and prevent future disaster.
The number one reason for catastrophic engine or component failure is loss of fluid. I want to help you make sure that does not happen to your Mercedes!
PLEASE NOTE: This same information is contained in my complete Diesel Engine Fault Diagnostic Manual. If you have already purchased that large volume no need to purchase this guide.
We have many resources and kits to help you fix your diesel fluid leaks. For information on repairing your diesel engine fluid leaks use the solutions finder to enter the location of the problem, your chassis and the work leak. You can also use our general search box to search for " leak repair kit.'
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.