Manuel oil pump

[Madbradcustoms]

Ok, I. Have. A Vz200tlrz
Thats a 2001, 200hpdi.
this motor has more than 3000 hours on it this is the first break down ever..
it destroyed the rod bearing number 1 cylinder.
It shows sign of no oil at that bearing.
, now I have rebuilt motor first run still shows no oil..
I flushed all lines and checked all check values during
Rebuild... I bleed air off the gear driven pump, I test ran on the hose.
Pull check value number one cylinder no oil flow.
How do I test this pump?

[Tucker]

Moving this to the top as I have no idea how to test an oil pump on an HPDI without blowing it up. Can't run off a premix tank.