Where are you putting shims inside the pump? My Lift-All manual doesn't mention shimming anything. If clearances are too great to produce good pressure, you need to replace worn out parts--either the pump body, cover plate, or back plate.
The drive gear and driven gear have to be "thinner" (1.998 in. to 2.000 in.)than the pump body is thick (2.001 in. to 2.003 in), or the pump cover and backplate will pinch the ends of the gears when you tighten the bolts.
The driven gear stud and the drive gear shaft keep the gears where they need to be in the pump body, if the bushings for the gears are all in good shape.
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Today's Featured Article - The 8N and the Fox - by Zane Sherman. Dec. 13 1998, Renfroe, Alabama. Last niht I dreamed about the day that I plowed the field of about 10 acres over on what Jimmy and Dandy called the Ledbetter field. I was driving the 1948 8N Ford tractor that Jimmy bought in 48 new This was prebably in about 1951 and maybe even befor the house was built. This would have made me to be about16 years old and I drove the tractor for nothing and would have paid to drive it if I had had any money which I didn't, but neit
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