This is a special pre-chamber fitting ONLY that will allow you to make your own prechamber removal tool for 1990 to 1991 350SD 350SDL (126 chassis), 1990 to 1993 300D 2.5 (124 chassis), and 1992 to 1995 300SD / S350 (140 chassis). This is custom threaded here in our and will only fit our custom made slide hammer starting in January of 2019 ( if you have our older model it will not work). NOTE: This could be used with any 5 lb slide hammer but you would need to have it welded to the end of your slide hammer or get a special threaded adapter made. You will be on your own if you purchase it for this purpose. WARNING: This is an intermediate to advanced D.I.Y job. No instructions or additional support is provided. Do not purchase this tool unless you are familiar with this procedure and the special precautions associated with it.
Here is a summary of the steps required to perform this job: No written or video instructions included with this part.
- Remove the intake manifold
- Remove the glow plugs
- Remove the mutli-spline collar nut (special tool required not included here - see related below)
- Install the fitting on end of our new model slide hammer
- Multiple upward hard hits of the sliding hammer will be required
- Clean the prechamber thoroughly before reinstalling
- Make certain prechamber is aligned properly when tapping it back into the head
NOTE: If you remove the valve cover and gasket you can use heat from a blow torch to heat the head slightly to aid in removal and replacement of the pre-chamber (see Kents video on use of blow torch)
Here is a picture of the special collar nut removal socket required. If you want to purchase that tool separately look below.
The following picture shows the special tool being used to remove the collar nut on a 1993 300D. THERE IS NO OTHER TOOL THAT WILL WORK FOR THIS JOB !
This will only fit our new model 2019 slide hammer as shown here. We modify the hammer for bigger and stronger threads here in our shop.