Hello again Navydad, the bushings on the pump seem to leak oil pass them?

There is a number stamped on the crankshaft (9 2M R 195) I have asked the parts guy will this help determine the if I have installed the correct main bearings but the rods were standard sized. I made the mistake of throwing my old mains away and used the O6R# to get the bearings. I am located in GA. Also, the oil pressure runs up to 60psi cold and drops to about 10psi or lower when warmed and has old rocker arm shaft with spacer/washer and bolt.Hello again Navydad, the bushings on the pump seem to leak oil pass them?
you did the correct way in ordering the bearings by the 06r0 serial number.normally the entire crank will be std. or undersized. check the rocker shafts they should have a small cup plug in one end of them, some times these plugs will come out. if your pressure starts out at 60 then comes down to 10 then you have a problem you are correct. does the check engine or stop engine come on ? the ops or oil pressure sending unit is in the wiring with the oil pressure Gage in a freight liner.





oil pump, fore got too tell you that the bushings some time will spin inside the body or will end up in side the pan.also the regulator valve that you replaced the alumni. one make sure it says series 60 to the block, the old Relief ones looked the same but did not say series 60 to the block on it.





some thing else is a spun or loose bushing in one of the exhaust or intake rockers i found this out on a bus one time . i had too remove the shaft and inspect them they looked ok until i removed the shaft and found the bushing loose that was a weird one !! let me know talk too you later. good luckHello again Navydad, the bushings on the pump seem to leak oil pass them?
Your oil changes viscosity around 180 to 240 degrees .





Like Crisco. Thick when cold , and thin when hot.





If your holding 50 psi fully warmed up , you can pretty much bet you have the correct bearings in.





Run it easy for 500 miles with conventional oil ,check your oil pressure ,change the oil and filter, check for metal shavings in the old oil.





I would not run a low viscosity oil like 5W30





I would run at least a 10W30.





If you have not put new rings on the pistons I also would highly suggest you run a fully synthetic oil.





But not if you replaced the piston rings.





Synthetic will not seat your rings to the walls , it's to slippery.





After this oil change run it easy for another 2500 miles .





Change the oil and filter again , check your oil pressure, and consider the engine broke in .









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