Dodge D250 1990 Service Manual page 258

Base Engine Components
DODGE Turbo Diesel
In-Chassis Repairs
Page 9F-29
Tighten the adjusting screw for the exhaust valve two complete
turns of the screw. Tighten the locknut.
Caution: Use extreme care that the piston does not
against the exhaust valve with so much force that it t
the push rod.
Rotate the crankshaft slowly in the direction of engine re
until the piston touches the exhaust valve.
Mark the vibration damper corresponding to the wire poin
Measure the distance and mark the pulley at one-half the n 5 n
distance between the two marks. This mark is the TDC mark. >!Ls