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4850 trans?


 
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1963
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PostPosted: Fri Dec 07, 2012 4:53 pm    Post subject: 4850 trans? Reply to specific post Reply with quote

Our 4850 sometimes bogs down and loses power in 15th
gear(road gear) and has hyd oil temp light come on. Only does
this in this gear and runs fine in the other gears. What could
cause this?
 
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Tx Jim
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Joined: 14 Feb 1999
Posts: 17403
Location: Coyote Flats,Tx

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PostPosted: Sat Dec 08, 2012 3:52 am    Post subject: Re: 4850 trans? Reply to specific post Reply with quote

I would recommend checking pressures and the only test ports that are suppose to have pressure in 15th gear are C1,C2,BHi & B4. I would suspect that Clo may be getting some pressure and it isn't suppose to or possibly has some warped disc's.
 


Last edited by Tx Jim on Sat Dec 08, 2012 3:56 am; edited 1 time in total
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1963
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PostPosted: Sat Dec 08, 2012 3:19 pm    Post subject: Re: 4850 trans? Reply to specific post Reply with quote

It runs fine in 15th gear until you throttle down and then hit the
throttle again. Loses about 3 mph and the engine seems to
labor and in about 3-5 minutes the hyd oil temp light comes on
along with the ? and eventually the stop alarm.
 
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buickanddeere
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PostPosted: Sat Dec 08, 2012 3:27 pm    Post subject: Re: 4850 trans? Reply to specific post Reply with quote

Don't keep operating the tractor in any gear. A moderate priced repair will be very expensive.
 
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tim s
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Posts: 7365
Location: Somerset Ohio

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PostPosted: Sat Dec 08, 2012 4:18 pm    Post subject: Re: 4850 trans? Reply to specific post Reply with quote

It"s possible that low trans pressure is causing the alarm to go off,low pressure can cause a slow shift letting one clutch stay on a bit longer or one "not" engaging quick enough. warm it up and do some pressure checks to see what kind of trans pressure you have,,another possibility is a clutch can be warped and dragging too...B&D is right deal with it now and the cost may be minor...it will only get worse....
 
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