This is one of the more common oil leaks I see on the 602 (5 cylinder) and 603 (6 cylinder) diesel engines. In fact, I have seen it on almost every one of these engines I have worked on. It may not be a large leak, but there seems to always be oil wetness around and below the area of the emergency stop lever on the side of the injection pump. This applies to the 1986 to 1987 300SDL, the 1987 300D and 300TD, the 1987 to 1989 190D 2.5, the 1990 to 1993 300D 2.5, and the 1990 to 1994 350SD, 350SDL, 300SD, and S350.
Product Details
Many are surprised to learn there is an o-ring behind the lever that can be replaced. Age, heat and vibration all play a toll on this small rubber seal. So I set out to find or have made an o-ring that would serve as an improved replacement over the original. I wanted an o-ring made of a high grade material that could withstand the heat and wear associated with a diesel engine. The o-ring I found hard but pliable, compresses well, and is made of high grade nitrile which is less prone to age-hardening. I even a special plastic tool to help you make the repair without damaging the surface of the new o-ring.
This repair kit contains the following:
- 2 replacement seals
- Special tool
- Complete PDF illustrated instructions
- Pair of nitrile gloves (not shown)
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How to view the PDF digital instructions:
Once you complete the purchase of this product you will be able to download the digital instructions immediately when you are logged in and on your personal account page (click on My Account). Any PDFs will show up under My PDF Manuals. You will be allowed three downloads, so please save the file on your machine for backup.
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The lever is located on the side of the injection pump and can be easily accessed inside the engine compartment. Common oil leak shown.
