MTU Detroit Diesel 183 Series Technical Publication page 187

Task Description
Connecting rod
Note
Replace conrod bolts every time the engine is disassembled.
Using the magnetic crack-testing method with fluorescent penetrant powder, check conrod, conrod cap and conrod
bolts for cracks.
Replace cracked parts.
Check condition of conrod and conrod-bolt threads for ease-of-movement.
Polish out all traces of nicks in conrod, replace conrod if necessary.
Check conrod main bore for blueing. If blueing is present (due to bearing damage), replace conrod.
Check main bore for wear and scoring; if necessary, machine bore to repair stage or replace conrod.
Check bush for scoring, dirt, wear and hot runs.
Use emery cloth to polish out slight wear and pitting; replace conrod bush if necessary.
Smooth conrod main bore with emery cloth.
Compressed air is air which has been compressed under pressure. Risk of injury!
Always wear protective goggles or safety mask when blowing out or drying out with compressed air.
Clean interfaces of conrod and bearing cap, blow dry with compressed air.
The interfaces are not to be damaged, replace conrod as necessary.
Check conrod oil bore for cleanliness, clean with bore brush and blow out with compresseed air.
Note:
Do not use a steel brush!
20080/1 E 98-12
Caution!
The pressure must not exceed 3 bar.
Group 03
Subgroup 7004
Page 7