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Minneapolis Moline Tractors Discussion Forum

445 power steering help

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mwj

06-27-2006 20:12:57

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we have 445 power steering dont work looking for place to fill unit cant seem to find it looks like lines come back under seat this tractor has no three point but has levers on right side of seat for hyd.but dont see any port to hook up hoses any help thanks

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shinnery

06-28-2006 00:58:02

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Re: 445 power steering help in reply to mwj, 06-27-2006 20:12:57

Reread your post, the control valve housing is the assembly the levers for remote hydraulics and three point goes into under the seat. on the side of that housing should be four threaded plugs, those are the taps for the remote hydraulics. The top two are for the center lever and the bottom outside two are for the inner lever if you believe the I&T folks.
Bryce

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shinnery

06-28-2006 00:48:25

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Re: 445 power steering help in reply to mwj, 06-27-2006 20:12:57

I have a 445N-LP but do not have it running yet. The same pump is used for hydraulics, three point and power steering. I had noticed the problem with checking the hydraulic fluid. The I&T Manual? that I have says remove the cover from the control valve housing and fill it there. Fill it to 1"-1 1/4" below the top after cycling the three point & etc. It says use ATF Type A whereever you can find that. I think I would try tractor hydraulic oil. Maybe someone else has more experience on this and will correct me where I am wrong.
Bryce

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TRKelvin

06-28-2006 14:53:49

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Re: 445 power steering help in reply to shinnery, 06-28-2006 00:48:25

The correct modern fluid is Dextron III.

Some people drain and refill with hytrans so they can swap implements between other brand tractors and get by o.k
.
Shinnery said how to add fluid. It sounds like yours has all tel-flo parts except no 3 point lift. I've seen those only in pictures.

If fluid doesn't help screw a pressure gauge in where the 1/8" pipe plug is on the control valve at the front of the tractor and see if you get 650-700 psi-I think when turning the wheels. If the priority valve is giving you that, then the problem is in the valve itself.

The actuator may be worn and not fully opening the valve. Its the little brass piece that screws on the front of the valve and engages a slot in a sleeve on the steering shaft.

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mwj

06-28-2006 20:22:47

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Re: 445 power steering help in reply to TRKelvin, 06-28-2006 14:53:49

thanks guys for help did put in fluid when move lever on rt of seat you can hear pump working .but power steering still dont work is seems pump is mounted on rear of tractor above pto is this pump for p/s and remotes thanks again for help mike, note when you move remote lever it realy sounds like there is lots of pressure

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gregg in ohio

06-29-2006 16:30:39

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Re: 445 power steering help in reply to mwj, 06-28-2006 20:22:47

that s the pump for everything...above the pto..under the seat is the plate with 4 bolts on it fluid goes there..the reason your hearing the pump grunt when you pull one of the levers is because its blocked with plugs and not being used.otherwise there oar no hyd lines hooked to the ports..gregg

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mwj

06-30-2006 19:59:36

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Re: 445 power steering help in reply to gregg in ohio , 06-29-2006 16:30:39

thanks to all for help this is are first 445 have several other makes of tractors.what hp where they . we. will be selling this tractor soon anyon interested in it has one rear new tire and new frt tire , runs real good. metal little rough is 1200.00 to much we will sell it for that. thanks mike

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shinnery

07-01-2006 23:28:07

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Re: 445 power steering help in reply to mwj, 06-30-2006 19:59:36

In a factory brochure I have they call them 40 drawbar horsepower class. I gave $100 for one of mine (setting over 20 years in Texas) and about $400 for the other (rebuilt engine but no distributor and all sheetmetal off tractor and sat 5 yrars). There is not a good tire between the two of them.
Bryce

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