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This quick reference guide will help you locate the source of the most common problems found on 123 and 126 chassis front suspensions. Illustrated parts breakdowns will guide you to the parts needed to repair the problem.
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.
This 16 page PDF downloadable SLS manual was written specifically for 123 300TD wagon owners, but also applies to the models mentioned above, 300TDs from 1979-1985 and other chassis above up to 1990.
This is a very common wear problem on most older Mercedes. The steering idler arm bushings are made out of rubber and when they wear your steering will get sloppy and you may hear squeaking noises when you turn the steering wheel.
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.
Instructions to complete a diesel system purge. Does not include instructions on changing the filter
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.
This 12 page instructional downloadable booklet by Kent Bergsma covers brake bleeding equipment and procedures for all model Mercedes from the mid 1950s to the mid 1990s. This covers chassis Ponton 110 111 112 113 108 109 114 115 116 107 116 123 126 201 and 124.
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.
These are the instructions that are included free with all of our Rear Subframe Mount Replacement kits. If you are interersted in seeing what this job entails, or you have the parts already, then these downloadable instructions are great.
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.
This book explains how a parallel pre-glow system works and how to properly test it using inexpensive electrical testing equipment. If your PENCIL style glow plugs are not working properly, you need to find the cause BEFORE you start buying parts.
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.
1973 to 1980 Vacuum Door Lock Actuator Rubber Diaphragm Replacement Instructions by Kent Bergsma - Download
These five page step-by-step illustrated instructions will walk you through the correct procedure of removing your old worn and cracked door lock rubber diaphragms from the actuator housing and replacing them with new ones. These are procedural instructions only.
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.
Included are instructions for testing the valve as well as removing and replacing it yourself. The valve is located at the back of the fuel injection pump. If working properly it will shut the fuel off inside the pump.
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 radiator neck reinforcement kit and a printed copy is included free with the purchase of that kit (see related products below).
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.
Running badly means poor performance. It happens sooner or later to EVERY diesel owner. The word "performance" is often used to describe how well a diesel engine runs once started. The principles discussed will cover all Mercedes diesels from the mid 1950s to the mid 1990s.
A diesel compression test is an extremely important engine diagnostic procedure. It should be done on any diesel you are planning to purchase. More than any other test, it can tell you if you are purchasing a healthy engine.
33 page digital PDF manual. Applies to all 110 115 116 123 126 201 124 140 diesels from 1961 to 1994. From my many years of working professionally on Mercedes diesels I have learned fuel injectors are the single most neglected maintenance item. I believe there are a number of reasons for this.
5 page digital PDF Instructions include multiple pictures to assist you in completing the job. Clear and detailed with tips and tricks from Kent Bergsma's years of experience.
We also highly recomend the Ultimate Flexible Brake Hose tool to complete the job. Look below to view.
Late 123 Early 126 Ignition Tumbler Switch Replacement Procedure Instructions by Kent Bergsma - Download
5 page PDF digital instructions to walk you through changing out your ignition tumbler.
Is your drivers seat starting to sag more than it use to? Are you finding it is just not comfortable any more on long trips? Maybe it tips to one side and you are constantly trying to compensate your weight to the other side.
Older Mercedes have a very effective emergency brake design which was virtually the same on all models from the late 1960s right up through the early 1990s. The actuating mechanisms are all mechanical and are controlled by a Y cable under the car.
Until now there has been no practical information for the DIYer to know how to test and replace their own vacuum 3/2 valve assemblies.
Downloadable PDF is 10 pages and includes step by step instructions and detailed photos to help you complete this job.
For all 123 chassis cars sedans, coupes and wagons from 1977 to 1985. Why a glove box manual! Of all the Mercedes glove boxes I have worked with from the early 1950s up to the mid 1990s, the 123 chassis glove box has p
For all 108, 109, 114, 115, 107, 116, 123, 126, 201, and 124 chassis from 1965 to 1995. I wrote this repair guide to show you how to properly remove your instrument cluster and replace worn or failing components. (NOTE: This is not a detailed manual on how to repair the components.
This repair guide covers all 123 chassis Mercedes sedans and wagons built from 1977 to 1985. Fits 240D 300D 300TD 300CD 280CE Removing a 123 chassis door panel and doing related door maintenance and repair are all fairly easy jobs for the do-it-yourselfer.
Changing the V-belts on your older 5 cylinder turbo diesel engine can be a pain. If you have not done it before it can be a REAL pain that leaves you confused and frustrated. In some cases it is possible to damage or break critical adjusting mechanisms if not done properly.
Have you been having electrical problems in your older Mercedes? Maybe you have taken the fuse box cover off and wiggled a few fuses and it has solved the problem for a while. You probably noticed corrosion on the tips of the old aluminum fuses.
The original fuel lines on most late 70s and early 80s Mercedes Diesels were braided line and with age they do rot and develop slow leaks.
The digital PDF instructions will walk you through the install and detailed photos will visually assist you step by step. PDF is 4 pages long.
Digital PDF instructions for cleaning your pencil glow plug chambers. 5 pages of step by step instructions with detailed pictures to visually assist you in completing the job.
Applies to 190D, 200D, 220D, 240D, 300D, 300CD, 300TD and 300SD (Not for 1984 to 1985 190D) Downloadable PDF eBook 3 explains how to properly remove and replace the glow plugs in the early diesel engines up to 1985.
If you have never replaced a hood star it can be frustrating getting the old one out and the new one in properly.
Our detailed instructions will explain how to do it in a few minutes with simple hand tools. Multiple pictures visually walk you through the process. PDF is 2 pages.
These instructions pertain only to the multi pin plug switch on the back of the ignition lock and key assembly.
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.
Can't get your trunk open with the key? Lost the key?
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.
Diagnose door lock problems on 1977 to 1985 240D 300D 300CD 300TD 280E 280CE. For all 123 chassis cars with vacuum door locks from 1977 to 1985. Now you can finally fix those pesky vacuum door locks yourself!
This guide will explain how to properly change the fluid and filter in your late 123, 126, 201, 124, late 107 chassis Mercedes as well as early 129 and 140 chassis. This includes model years from 1982 to 1993.
Installation instructions specific for 123 / 126 chassis only - general for other chassis. Details included on how to make your own fuel tank outlet hose and fitting with materials supplied in the Flexible Fuel Line Replacement kit.
This instruction booklet is meant to be an introduction to simple rust repairs. I have also written a manual that goes into more advanced repairs using Miracle Paint to replace larger rotted sections of sheet metal.
For most 123 chassis cars made from 1977 to 1985 and all 116 chassis sedans built from 1973 to 1980 with the Behr Heater motor. This repair guide will take you through the process of how to properly remove your heater blower motor and replace the motors two brushes.