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Dodge D250 1990 - Page 242

Dodge D250 1990
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Base
Engine Components
DODGE
Turbo Diesel
In-Chassis
Repairs
Page 9F-13
Wash the cylinder head in hot soapy water solution.
After
rinsing,
use compressed air to dry the cylinder head.
Polish
the gasket
surfaces
with
400
grit
paper.
Use
an
orbital
sander or sanding block to maintain a
flat
surface.
Inspect the valve guides for scuffing or
scoring.
Measure the valve guide bore.
Diameter
mm
in
8.019
8.089
MIN
MAX
0.3157
0.3185
Note:
If the valve guide bore is over the maximum
limit,
refer to
engine Alternative Repair Section 9K.
Inspect the head surface for
nicks,
erosion, etc.
Check
for head
distortion as illustrated.
Limit
Variation:
0.010mm
[.0004
inch]
within
a
50.8mm
[2.0 inch] diameter area
0.30
[0.012
inch] overall end
to end or side to side.
Note:
If the cylinder head deck surface is out of specification,
refer to engine Alternative Repair Section 9K.

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