Search results

If you must pull the hydraulic head, turn the engine over by putting the transmission in 5th gear with transfer case in neutral. Use a pry bar though the yoke on the universal joint between the transmission and transfer case. A 3/4" round bar, 2' long is all you need.

The function of the delivery valve is a check valve in the system, I doubt a thin copper washer would reduce spring force enough to matter. Worth a try.

The hydraulic head swap isn't needed unless there is a crack in the head itself. Finding this would require careful inspection with magnification. The pictures you posted don't show detail enough to rule this out. Also, a new cap screw would help. You could try some dry moly spray on the...

Also, the O-rings do not seal the delivery valve. They are only sealing the low pressure side of the head, high pressure is always metal to metal seal.

That is the cover to the delivery valve. There is a spring under it, forcing the lapped delivery valve into the seat in the head. Take the plug out and see why it is leaking. I would venture there is a crack which cannot be repaired. But it could be loose. Yes, the injection pump is...