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Oliver, Cletrac, Co-op & Cockshutt Tractors Discussion Forum
Show Parts for Model:

Power Steering on 1800

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Author  [Modern View]

11-05-2012 02:43:04

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I have an Oliver 1800 tractor with a Gemmar steering unit. The steering is very inconsistent between power steering (easy) & manually (hard to turn) steering. I"ve had the Gemmar unit removed, disassembled, inspected & rebuilt (looked good). The Flow Divider has 3 washers in it now and overall looked good. (Although during first removal, there was some pieces of small, o-ring like pieces caught in the spring & spool as well as up by the Gemmar unit. Not sure where these came from). The 3 pt hitch & the Loader/grapple work very well. I put a pressure gauge on the Flow Divider unit. Again, whenever the psi > 1000, the steering worked good. However, the pressure was inconsistent (low & high) and it corresponed with the ease of steering. Just wondering what else to look for. The Serial number starts with 111. Any help or advice would be greatly appreciated!!

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P Heisey Harleysville,PA

11-11-2012 07:32:01

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 Re: Power Steering on 1800 in reply to ksimons_65, 11-05-2012 02:43:04  
Hi Kevin,

I have parts and information on stock here for the Gemmer Power Steering head. This head was also used on the later 770/880, 1800-A Series Oliver tractors and ALL the COCKSHUTT built 550/560/570/570S tractors with the P.S. option.

I do not know anything about the power steering pump or hydraulic pump on your 1800 Oliver.

If you think your problem is in the PS head, I can assist you.

Phil Heisey

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Kevin Simons

11-13-2012 18:53:14

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 Re: Power Steering on 1800 in reply to P Heisey Harleysville,PA, 11-11-2012 07:32:01  
Thanks for the info. I've had the Gemmar power steering head off, torn apart and rebuilt. However, that was not the issue. I'm thinking it's somewhere within the hydraulic pump unit. Just not sure what to check (relief valve?)

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Kevin Simons

11-07-2012 17:37:37

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 Re: Power Steering on 1800 in reply to ksimons_65, 11-05-2012 02:43:04  
Was hoping someone could respond to this offering any type of advice. Appreciate it!!

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J. Schwiebert

11-08-2012 08:07:00

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 Re: Power Steering on 1800 in reply to Kevin Simons, 11-07-2012 17:37:37  
I have some questions. How can I call you over the weekend. I will also tell you except one I did on a Cockshutt about 15 years ago I have not worked on one since at least 1975.

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Kevin Simons

11-08-2012 20:25:56

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 Re: Power Steering on 1800 in reply to J. Schwiebert, 11-08-2012 08:07:00  
J. Schwiebert- Please send a reply to my e-mail address of on what time of day this weekend would work best to talk with you about the questions regarding the power steering.

I will then reply to you via e-mail with my cell phone number and hopefully some "general" times/day that would work

Thanks for your help and advice!!

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