Posted by IHFarmer07 on February 22, 2015 at 19:01:29 from (104.237.108.124):
In Reply to: OIL PUMP posted by gbs on February 16, 2015 at 18:25:31:
Question for all you, I just registered to this site after seeing this thread. We are in the process of rebuilding a 966 after scorching #5 piston due to lack of lubrication as the block did not have any piston coolers and we were told that if you have both piston coolers that the 1" rotor oil pump will give a low oil psi reading at operating temp and the reason for this is something to do with Navistar having issues with the pumps locking up so they opened the specs of the 1" and at an idle will not have much oil psi. Now there's the 1.25" that is supposed to solve this low oil psi issue, so we bought the 1.25" pump and now the original harmonic balancer tightened to spec the engine will NOT move but as soon as we loosened the 3 bolts up to finger tight the engine moves freely. We found that the balancer is hitting the casting that separates the seal from the rest of the pump, has anyone had this problem that has used the 1.25" pump???? We are thinking about turning the surface for the ware ring from the ware ring down to the tapered thickness to gain clearance will this work?? Planning on calling the place we purchased the pump and see what their solution is.
Thanks!
This post was edited by IHFarmer07 at 19:02:15 02/22/15.
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