Detroit Diesel 4000 Series, Service Manual, Page: 242 / 2706

SERIES 4000 12/16V SERVICE MANUAL
C 013.05.08 – INSPECTION AND REPAIR
1. Clean cylinder liner.
2. Visually inspect cylinder liner for cracks using the magnetic crack-testing method with
fluorescent magnetic powder.
[a] If cylinder liner shows cracks, replace liner as necessary.
[b] If cylinder liner does not show cracks, continue inspection.
3. Visually inspect outer wall of cylinder liner for pitting.
[a] If outer wall of cylinder liner shows severe pitting, replace liner as necessary.
[b] If outer wall of cylinder liner does not show pitting, continue inspection.
4. Visually inspect sealing and mating faces for wear and damage.
[a] If sealing and mating surfaces show wear or damage, rub down with emery cloth or
oilstone as necessary.
[b] If damage is beyond repair, replace cylinder as necessary.
[c] If sealing and mating surfaces are not damaged or worn, continue inspection.
5. Replace O-rings.
6. For cylinder liners with carbon scraper ring (marine only): visually inspect carbon scraper
ring for scores and pitting.
[a] If carbon scraper ring shows scores or pitting, replace ring as necessary.
[b] If carbon scraper ring does not show scores or pitting, continue inspection.
7. Inspect floating mount of carbon scraper ring in the cylinder liner.
[a] If carbon scraper ring appears to jam, measure the bore in the cylinder liner. Replace
carbon scraper ring if necessary.
[b] If carbon scraper ring does not jam, continue inspection.
All information subject to change without notice.
C -96
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