MTU Detroit Diesel 183 Series Technical Publication page 252

Group 05
Subgroup 4532
Page 6
20080/1 E 98-12
Release securing screw (9) and turn knurled wheel (8)
counter-clockwise approx. ½ to 2 lines of graduation (1
line of graduation = 0.1 mm). Retighten securing screw
(9) and locknut of rapid adjusting screw and turn again.
Hold knurled wheel in position (12) for advance and turn
crank until top of cutting tool has come outwards.
Cutting must continue until seat is smooth (machining
limits must not be exceeded). Then turn again without
cutting. The values given in the Tolerance and Wear
Limits List 05-4532 or 05-4532a must achieved for
newly installed inserts.
Note
Valve seat must be replaced if valve seat inner contour
(arrows) was damaged or worn when machining inlet
valve seat.
Measure valve clearance (See Page 2).
Task Description