Search | W123 | Downloadable PDF

Illustrated 6 page step-by-step instructions for proper removal and installation of the modulator upgrade for the years and models noted here. Includes how-to specific details for using the new adjustment cap on the upgraded OEM modulators now available. These are installation instructions only.

To read or download in a 2-up format. Kent will walk you through the steps of adjusting the valve clearances on your older 190D, 200D, 220D, 240D, 300D, 300CD, 300TD, and 300SD. This procedure should be done every 12,000 miles. Two special wrenches are required.

For repairing non-structural areas only with Miracle Paint and fiberglass.

When you download this from your "account" at Mercedessource.com you can print it on standard 8 1/2 x 11 paper, or you can view it from any computer if you are logged in at Mercedessource.

Kent shares with you 3 key steps that you should consider doing to get your old fuel injected 6 and 8 cylinder engines running properly. These include:

Indications that your seal needs replacing are tears in the lip and no resistance when you close your trunk. If you trunk snaps shut too easily it means the seal has collapsed and is no longer sealing properly.

These instructions will walk you through removing and reinstalling your pump from the engine, inspecting and opening the pump, mounting the pump, removing, inspecting and reinstalling the pump piston, installing new seals, check valves and cover plate.

For all 108 109 114 115 107 116 123 126 201 and 124 Chassis 1968 to 1995 including those models that have a special cable installed to keep the transmission locked until the key was turned.

During his years of working on diesel engines, Kent has learned a few things about glow plugs. Some he learned the easy way and others he learned by “pain and suffering.” If misunderstood or improperly maintained, glow plugs can be the “achilles heal” of a diesel.

Book 1 explains how a series pre-glow system works and how to properly test it using inexpensive electrical testing equipment. If your glow plugs are not working you need to find the cause BEFORE you start buying parts. This is something you can do yourself.

These seals are not only cosmetic but they also provide a seal to minimize the amount of rain water getting down inside the doors on an older Mercedes.

A faulty or improperly adjusted rack damper bolt can cause your 617 5 cylinder turbo diesel engine to “rock” when it is idling. This means the engine will seem like it is changing speed up and down ever so slightly.

These instructions are part of our wagon rear hatch strut replacement kit and a printed copy is included free with the purchase of that kit (see related products below). Downloading and reading these instructions will explain how to do this repair yourself.