heavyquip Posted August 30, 2015 Share Posted August 30, 2015 Someone please help me . Have a etech 460 in a RD888SX dump truck . Lost two of the rockers , rollers got damaged so replaced a complete set of 12 , installed new Mack oil pump but have low oil pressure issues to the point that the ?Jake brake will not operate .Rod and main bearings look fine , new filters , fresh oil and still will not pass 20psi what could be my problem ? Quote Link to comment Share on other sites More sharing options...
thinice Posted August 31, 2015 Share Posted August 31, 2015 Hey heavy, I've known guys who talked about this on the Cat side. Both times they changed the filters to a 'taller' size and the pressure problem was solved. One also had lubricant holes in parts plugged with shavings. Quote Link to comment Share on other sites More sharing options...
gearhead204 Posted August 31, 2015 Share Posted August 31, 2015 failed cam bearing? can you put a presssurized oil supply into an oil galley port and then look for excessive leakage? Quote Link to comment Share on other sites More sharing options...
mowerman Posted August 31, 2015 Share Posted August 31, 2015 good luck,,,and welcome...bob Quote Link to comment Share on other sites More sharing options...
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