Injector Protrusion - Dodge D250 1990 Service Manual

In-Chassis Diagnostic Procedures
Page 9E-4
Base Engine Components
DODGE Turbo Diesel
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Injector Protrusion
Injector protrusion can affect power from the engine. In
addition to a single sealing washer (A) on the injector, the
thickness (B) of the head gasket controls Injector protrusion.
Oversize service head gaskets are used when the head surface
on the block has been refaced. The head gasket is marked to
indicate the thickness. One notch means the gasket is standard
for use with blocks that have not been refaced.
Two notches identify that the gasket is for use with blocks that
have been refaced 0.15mm [0.006 inch]. The block should be
marked with one X on the rear of the block to indicate the
surface has been refaced 0.15mm [0.006 inch].
Three notches indicate the gasket is for use with a block that
has been refaced 0.50mm [0.0197 inch]. Two 50Cs on the rear
identifies a block has been refaced 0.50mm [0.0197 inch]
resurface.