MTU Detroit Diesel 183 Series Technical Publication page 219

Task Description
20080/1 E 98-12
Position feeler gauge between inlet valve and rocker
arm and/or between exhaust valve and rocker arm.
Note
Valve clearance is set correctly if it is possible to pull
the gauge through with slight resistance.
Valve setting wrench
Gauge 0.60 mm
Gauge 0.40 mm
Gauge retainer 617 589 00 40 00
If it is necessary to correct valve clearance, fit valve
setting wrench on adjusting screw, release locknut and
correct valve clearance. Tighten locknut, 50 Nm.
Remove rotator on gear case.
Rotating device
Group
Subgroup
Page
422 589 00 11 00
422 589 01 23 00
617 589 04 23 00
407 589 00 63 00
05
1122
5