Service Manual

Lubricating Oil and Filter Analysis ISB, ISBe and QSB (Common Rail [...]
Page 7-50 Section 7 - Lubricating Oil System - Group 07
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For additional oil analysis information, refer to Cummins®
Engine Oil and Oil Analysis Recommendations, Bulletin
3810340.
NOTE: Do not disassemble an engine for repair based
solely on the results of an oil analysis. Inspect the oil
filters. If an oil filter shows evidence of internal engine
damage, find the source of the problem and repair the
damage. Reference the appropriate procedure(s) based
on the following oil filter inspection.
WARNING
Restrain the full flow lubricating oil filter and use care
when cutting open the upper section of the
combination filter. The filter element spring is under
compression and can cause personal injury.
Use tube cutter, Part Number 3376579, to open the upper
section of the bypass full-flow oil filter.
Inspect the filter element for evidence of moisture or metal
particles.
Metal Possible Source
Copper Bearings and bushings
Chromium Piston rings
Iron Cylinder liners
Lead Bearing overlay material
Aluminum Piston wear or scuffing