MTU Detroit Diesel 183 Series Technical Publication page 248

Group 05
Subgroup 4532
Page 2
20080/1 E 98-12
Valve seat machining
Note
Valve guides are installed.
Clamp cylinder head on valve spring compresor.
Valve clearance measurement
Insert valves.
Secure dial gauge (14) to dial gauge holder (15).
Mount dial gauge holder (15) on plane surface on
cylinder head and feeler of dial gauge (14) on valve
head with preload (approx. 3 to 4 mm).
Set scale of dial gauge to "0".
Mount feeler of dial gauge (14) on plane surface on
cylinder head and read off valve clearance.
Dial gauge
Dial gauge holder
For limit values, see Tolerance and Wear Limits List
05-4532 or 05-4532a.
If limit values are exceeded, replace valve.
Note
If valve seats are only slightly indented they can be
reconditioned without replacing valve seat inserts
provided limit values are not exceeded .
Remove valves.
Task Description
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