MTU Detroit Diesel 183 Series Technical Publication page 237

Task Description
20080/1 E 98-12
Set bore gauge with micrometer.
Dial gauge 001 589 53 21 00
Using bore gauge, measure basic bores for valve seat
inserts in cylinder head.
Check limit values according to Tolerance and Wear
Limits List 05-3832 or 05-3832a.
Machine to repair size as required.
Dial gauge 001 589 53 21 00
Basic bore reconditioning
Insert pilot (5) (11.9 mm dia.) into valve guide until
slotted rod stop contacts valve guide; if necessary,
press down slotted rod with screwdriver. Secure with
mandrel inserted at top and bottom of pilot (arrows).
Secure rotating tool in support.
Group 05
Subgroup 3832
Page 5