Hi,
slammds15 - I can only assume that the lubrication system was cleaned correctly first time around
I have seen this on a number of engines where the hardening was faulty. The fact that the brake lobes were OK gives a clue. is there a history of faulty cams on these motors. Cummins have a history of cam issues
Detroit have from time to time read the cam part numbers in situ to ensure they pick up cams with suspect hardening prior to parts being eaten alive!
Other engine families (unnamed on here) are also experiencing similar cam quality issues
Residual dust can have a long life in any engine if it is not cleaned correctly!
Going by your comments it is not a lubricant issue
slammds15 - I can only assume that the lubrication system was cleaned correctly first time around
I have seen this on a number of engines where the hardening was faulty. The fact that the brake lobes were OK gives a clue. is there a history of faulty cams on these motors. Cummins have a history of cam issues
Detroit have from time to time read the cam part numbers in situ to ensure they pick up cams with suspect hardening prior to parts being eaten alive!
Other engine families (unnamed on here) are also experiencing similar cam quality issues
Residual dust can have a long life in any engine if it is not cleaned correctly!
Going by your comments it is not a lubricant issue