MTU Detroit Diesel 183 Series Technical Publication page 259

Task Description
20080/1 E 98-12
Mount dial gauge holder on cylinder head .
Position dial gauge with pre-load on valve head of inlet
valve set scale to "0".
Dial gauge
Dial gauge holder
Turn back engine and observe dial gauge until pointer
on dial gauge is stationary.
Read off measured value for TDC inlet.
Remove dial gauge with dial gauge holder.
Set piston of 1st cylinder to overlap TDC.
Mount dial gauge holder; to do so position dial gauge
with pre-load on valve head of exhaust valve and set
scale to "0".
Dial gauge
Dial gauge holder
Rotate engine further in direction of rotation and
observe dial gauge until pointer of dial gauge is
stationary.
Read off measured value for TDC exhaust.
Remove dial gauge holder and dial gauge.
Set valve clearance of 1st cylinder (05-1122).
Install cylinder head screws (01-5014).
Remove rotating device.
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