Char Lynn Power Steering
Printed From: Unofficial Allis
Category: Allis Chalmers
Forum Name: Farm Equipment
Forum Description: everything about Allis-Chalmers farm equipment
URL: https://www.allischalmers.com/forum/forum_posts.asp?TID=37661
Printed Date: 10 Sep 2025 at 9:07pm
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Topic: Char Lynn Power Steering
Posted By: Leo_MN
Subject: Char Lynn Power Steering
Date Posted: 21 Sep 2011 at 7:32am
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I have a used Char Lynn SF-101 power steering unit we installed on a D17 gas tractor. We added a new Prince flow divider to supply 3GPM @ 1000 psi to the unit. It works but in "chunks." If you are standing still and try to turn in either direction it feels like it is binding. When you get the wheels to turn just a little then they move easily. The same is true when you are traveling. The unit sticks in other places too but randomly. Is the unit bad or what else can I try? Does anyone rebuild these units? |
Replies:
Posted By: CTuckerNWIL
Date Posted: 21 Sep 2011 at 7:47am
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What kind of shape is your steering gear in? If it binds while turning, the power steering unit won't fix that and may have a hard time overcoming the bind. Things only get worse when you try to steer while the wheels aren't moving.
------------- http://www.ae-ta.com" rel="nofollow - http://www.ae-ta.com Lena 1935 WC12xxx, Willie 1951 CA6xx Dad bought new, 1954WD45 PS, 1960 D17 NF |
Posted By: Nathan (SD)
Date Posted: 21 Sep 2011 at 9:06am
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You used the tractor hydraulics to supply the ps unit? I would test to make sure you are actually getting a steady 1000 psi to the unit. Just T-in a pressure gauge and then watch it when you try to use the unit. |
Posted By: Bull
Date Posted: 21 Sep 2011 at 9:27am
| I had a complete Char Lynn unit on a 45 years ago. It performed exactly as you describe. |
Posted By: Leo_MN
Date Posted: 21 Sep 2011 at 9:27am
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The tractor has been hard to steer even without the loader but never in "chunks," just stiff. I never thought it was abnormal for a heavy old manual steering tractor though. With that update, do you still think it could be the steering gear?
We had the front end off to add the front mounted pump but never looked at the steeering gear mechanism. It has a wide front and the 3 rib tires.
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Posted By: Leo_MN
Date Posted: 21 Sep 2011 at 9:32am
| We have a front mounted pump for live hydraulics that is used for both the loader and the Char Lynn. The flow divider priority is the Char Lynn with whatever is left over going to the loader. I will be measuring the pressure to the Char Lynn that should confirm or eliminate any flow / pressure problems. Thanks |
Posted By: WD45
Date Posted: 21 Sep 2011 at 7:59pm
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Have a unit on our WD45 diesel. Works very well. ------------- Fred Dunlop, G,B,CA, WC,WF, 3 WD45`s,gas, diesel and LP,U,D10 series III, D12,D14,D15 SERIES II,D17 Series IV in Gas and Diesel ,D19 GAS and D21,170 185,210 ,220 an I-600 8070 fwd, 716H and 1920H |
Posted By: CTuckerNWIL
Date Posted: 22 Sep 2011 at 8:10am
Yes, if it would steer hard before the loader and PS there is something wore out. With proper working steering gear, you should be able to steer with a spinner knob, without much effort, as long as the tractor is moving. A little grease goes a long way also. Jack the front end up before trying to grease the king pins. ------------- http://www.ae-ta.com" rel="nofollow - http://www.ae-ta.com Lena 1935 WC12xxx, Willie 1951 CA6xx Dad bought new, 1954WD45 PS, 1960 D17 NF |
Leo_MN wrote:Posted By: skipwelte
Date Posted: 22 Sep 2011 at 8:38am
| I have 3 of those Char Lynn units, I do notice that if you are not moveing there is a resistatnce to turning the steering wheel at first. If your at or near idle it steers hard. Rev up the motor and move the tractor it steers well, the initial resistance is still there, just not near as noticeable. HTH |