D12/14 front hydraulic pump questions
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Category: Allis Chalmers
Forum Name: Farm Equipment
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URL: https://www.allischalmers.com/forum/forum_posts.asp?TID=182497
Printed Date: 22 May 2025 at 6:25pm
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Topic: D12/14 front hydraulic pump questions
Posted By: KMAG
Subject: D12/14 front hydraulic pump questions
Date Posted: 13 Aug 2021 at 11:03am
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I was looking at a D12 with a hydraulic oil tank between the distributor housing and oil filter. It connects to a pulley driven pump off the crank just under the distributor drive and has lines running to rear of tractor. Was the setup better/worse than rear pump setups? Redundant? Owner didn't know anything about it. Thanks. Here is a pic of the setup on another tractor. 
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Replies:
Posted By: jaybmiller
Date Posted: 13 Aug 2021 at 12:38pm
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That's be a 'live' hydraulic setup..as long as engine is running, you got hydraulics. With the regular setup, push the clutch in you lose hydraulics. ------------- 3 D-14s,A-C forklift, B-112 Kubota BX23S lil' TOOT( The Other Orange Tractor) Never burn your bridges, unless you can walk on water |
Posted By: PaulB
Date Posted: 13 Aug 2021 at 12:40pm
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That was used on many of the earlier D10/12 tractors when a "Traction booster" system wasn't needed, just a lift/lower system. Such as when a tractor was to be primarily only used for cultivating. That pump system also was used to power the power assist steering offered as a option on D10/12 tractors. ------------- If it was fun to pull in LOW gear, I could have a John Deere. Real pullers don't have speed limits. If you can't make it GO... make it SHINY |
Posted By: Fred in Pa
Date Posted: 13 Aug 2021 at 12:59pm
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Picture above is a original engine gear driven pump .Used on early serial # D 10 12 ,Rear pump where used on later models and if used hard for PTO work would rip splines off drive hub and shaft at flywheel and u lose power to rear of tractor for PTO n Hydraulics ------------- He who dies with the most toys is, nonetheless ,still dead. If all else fails ,Read all that is PRINTED. |