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Allis Chalmers Type-B 1940 AC Hydraulic Pump failure

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JohnParm
Join Date: Oct 2013
Posts: 0 Massachusetts
TractorPoint Premium Member -- 5 Tractors = Very Frequent Poster

2013-10-19          188153


Please Welcome JohnParm to Tractorpoint. From: Massachusetts. Interests: Antique Allis-Chalmers
. Equipment: Alis Chalmers Type-B 1940 Tractor. Property: One Acre Residential/Agricultural

Need help with the Hydraulic pump. Pump charges cylinders to raise dual plows attached to cross bar, two-lifts attaced to seat bracket. the lifts do not hold in the up position, i.e...they drop. Something is not working on this Hydraulic Pump; any suggestion about troubleshooting this pump's mechanisms?

John

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____________________________________________________________________________________
Allis Chalmers Type-B 1940 AC Hydraulic Pump failure

View my Photos
JohnParm
Join Date: Oct 2013
Posts: 0 Massachusetts
TractorPoint Premium Member -- 5 Tractors = Very Frequent Poster

2013-10-21          188159


Hdraulic Pump on Allis-Chalmers Type B located off the PTO ....

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Allis Chalmers Type-B 1940 AC Hydraulic Pump failure

View my Photos
DennisCTB
Join Date: Nov 1998
Posts: 2646 NorthWest NJ
TractorPoint Premium Member -- 5 Tractors = Very Frequent Poster  View my Photos  Pics

2014-02-05          188837


Jump to top of list ....

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Allis Chalmers Type-B 1940 AC Hydraulic Pump failure

View my Photos
kthompson
Join Date: Oct 2005
Posts: 5219 South Carolina
TractorPoint Premium Member -- 5 Tractors = Very Frequent Poster  View my Photos  Pics

2014-02-05          188838


John hope you enjoy TP. It has been great for me.

How fast is your lift dropping? (Don't need time it.)
Is it dropping while the tractor is running or only when cut off?

If it is dropping while tractor is running and or doing so fast then I think the seals control valve or in the cylinder(s) itself are leaking.

You need to determine if it is leaking fast enough to cause any issue. If a real slow leak you make find no or little benefit to having it worked on. kt ....

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____________________________________________________________________________________
Allis Chalmers Type-B 1940 AC Hydraulic Pump failure

View my Photos
kd8ajc
Join Date: Jul 2014
Posts: 3 Kalamazoo, Michigan
TractorPoint Premium Member -- 5 Tractors = Very Frequent Poster

2014-07-17          190715


Hello, after 42 years of searching, I am 98% sure I have located my Grandfathers 1947 AC model C. He had a plow with a "lift assist" and I assume this means a hydraulic pump. Please forgive my ignorance but is the plow lift controlled entirely from the lever that pivots from under the front of the bench seat? I have seen 1 or 2 ads that suggest a flow valve is needed to direct the oil to raise or lower the plow. I think this is incorrect. Thank you and if you know of anywhere I can find the parts, lever, ram, etc, please let me know. James Newton Kalamazoo, Michigan ....

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