MTU Detroit Diesel 183 Series Technical Publication page 195

Task Description
Measuring piston protrusion.
20080/1 E 98-12
Insert bearing cap and manually install conrod bearing
screws.
Note
Markings on bearing cap and conrod must be aligned.
Tighten conrod bearing screws alternately in several
stages to 100 Nm and then further rotate to 90° to 100°
angle of rotation.
Note
Check projection between piston crown and crankcase
partition with piston at TDC.
Secure dial gauge (7) in dial gauge holder (8).
Dial gauge
Dial gauge holder
Position dial gauge holder (8) with dial gauge (7) on
appropriate measuring block and feeler (arrow) on
piston crown with preload (approx. 3 to 4 mm) .
Set scale of dial gauge to "0".
Position feeler (arrow) on partition on crankcase and
read off measured value = piston projection.
See Tolerance and Wear Limits List for specified values
(03-7004).
Note
If projection is greater than 0.3 mm install thicker
cylinder head gasket
Dial gauge 001 589 53 21 00
Dial gauge holder
Bar engine and check for clearance between oil spray
nozzle and piston. If necessary, align oil spray nozzle.
Group
Subgroup
Page
001 589 53 21 00
343 589 00 40 00
343 589 00 40 00
03
7004
15