Injector sleeve remove

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This page has been translated with google translate, there may be errors in the stories.

In various engines (cylinder heads) the injector (atomizer) is contained in a copper sleeve, called sleeve. This sleeve is cooled with cooling water and also provides a watertight and gastight seal. These types of sleeves can be found on the MD11. This sleeve has a disadvantage, namely that if it is damaged, the atomizer no longer closes properly and the compression will decrease. If the sleeve is damaged, it must be removed, I will explain step-by-step below how that goes.

Drawing of a sleeve in a cup.

To remove the sleeve you need the following tools:

Drill jig and drill around 12.5

Sleigh puller

Combination wrenches to use the sleeve puller.

Drill, jig and sleeve puller.

Step 1.

To remove a sleeve, the head of the motor must be loose and it must be properly secured to a workbench. The sleeve must also be cleaned equally well with, for example, brake cleaner, so that the sleeve puller has a good grip.

Step 2.

The sleeve must be partially drilled out because it is seamed in the head. Drilling is done with a drilling template because you absolutely must not damage the cast iron head with drilling. The drilling template ensures that the drill is properly guided and that it does not enter the cast iron head board. The diameter of the drill used must be less than the largest diameter of the sleeve that opens into the combustion chamber.

The drill must therefore be smaller than the outer diameter of the sleeve, but larger than the hole in the sleeve. Drilling out must be done because the sleeve is seamed on this side and in this way you take the tension / pressure off the sleeve. This makes it easier to pull it out with the sleeve puller.