B07.16-0004-04
Indications on removal
The sealing ring must be removed from the injector housing.
The injectors must not be disassembled.
Remove the injectors with the appropriate special tool.
Cleaning instructions of the injector housing and of the injector seat in case of light carbonizing
To avoid the penetration of dirt, before cleaning the injector housing, plug the combustion chamber hole with the plug from the cleaning kit 611 589 01 68 00.
For the cleaning of the housing, before using the cylindrical wool brush 651 589 01 68 00, remove the excessive dirt and oil with a cloth.
In the utilization of cylindrical wool brush 651 589 01 68 00 the use of a power drill is permitted.
Should it be necessary, the cleaning of the injector seat surface can be done with a cylindrical brass wire brush 611 589 01 68 00.
In this case, do not utilize a power drill to drive the brush.
Repeat the cleaning process until the housing is free of dirt and/or carbon.
Apply compressed air jets to eliminate cleaning residue and cover the housing.
If a satisfactory result is not obtained, follow the cleaning instructions for heavy carbonizing.
Cleaning instructions of the injector housing and of the injector seat in case of heavy carbonizing
In this case the use of a power drill is not permitted.
For the cleaning of the housing utilize a cylindrical steel wire brush 668 589 00 68 00.
Before the cleaning of the injector seat surface, plug the hole of the combustion chamber with the cleaning kit plug 611 589 01 68 00.
Insert the cylindrical steel wire brush, carefully, in the housing and clean the injector seat surface.
Repeat the cleaning process until the housing is free of dirt and/or carbon.
Apply compressed air jets to eliminate cleaning residue and cover the housing.
If a deformation is detected on the injector seat surface, a rework is possible utilizing a special tool 611 589 00 66 00.
Rework in the case of deformation of the injector seat surface
Always remove theminimum amount of material for correction, whichwill permit, if necessary, future reworks.
Reworking the injector seat surface utilizing the special tool 611 589 00 66 00.
Refer to the reworking procedure in the workshop information. In this case, do not utilize portable power drill.
After the rework, observe thespecified limits for the injection nozzle protrusion (2.32 mm to 2.85 mm).
There will be cases in which the amount of material removed still permits the utilization of a normal sealing ring.
Ifthe injector nozzle protrusion is not within the specified limits (2.32 mm to 2.85 mm), a special size sealing ring will be necessary.
Instructions on cleaning of injection nozzles
Clean the region (A) of the injectors with a brass wire brush.
Never clean the injection nozzle with a metal wire brush.
Clean, carefully, the injector with a cloth.
Apply compressed air jets to eliminate residue and lint.
Instructions to install the injectors
Grease the region (B) of the injector stems with special grease.
Always replace the sealing rings between the injector and the combustion chamber.
The sealing ring and the contact surfaces must be free of grease.
Always replace the injector fastening bolts.