Farmall 100 Hydraulic Pump

MSFARMALL · Jul 9, 2021

The pump is leaking oil into crankcase. Is there an easy fix? I have read two different pumps were used; Thompson and Pesci. Is there easy way to identify?
Thanks in advance.

jimtrs · Jul 9, 2021

(quoted from post at 18:16:55 07/09/21) The pump is leaking oil into crankcase. Is there an easy fix? I have read two different pumps were used; Thompson and Pesci. Is there easy way to identify?
Thanks in advance.

Fix is pump front seal. Be sure shaft is not too worn.
I think it was a Cesna, Wooster, Pesco, Thompson pumps. Some with multiple versions. Some used o-rings, others used seal. Best bet would be to open up pump and see what's there.

Janicholson · Jul 9, 2021

Here are the diagrams that will let you know which you have. There are some with Oring seals. The key is often a speedy sleeve to repair a wear groove in the shaft. if the seal can be matched with one that is thinner, it will hit a different spot on the shaft. Polish the shaft roundy round, not in and out, with 600 grit paper. Jim
Pesco

Cessna

jimtrs · Jul 9, 2021

Jim & Jim
Similar names,
Similar posts
Same time

MSFARMALL · Jul 9, 2021

Thanks guys for the information.

Farmall 100 Hydraulic Pump

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