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 High-Low Range

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WellThatsSurprising
Screwdriver
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WellThatsSurprising

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PostSubject: High-Low Range   High-Low Range Icon_minitimeTue May 01, 2012 11:29 pm

I just realized the transmission on this tractor i'm planning to use has a high and low range meaning I might not be able to weld it locked... Any ideas?
High-Low Range Wp_00010
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Stretch44875
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Stretch44875

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PostSubject: Re: High-Low Range   High-Low Range Icon_minitimeWed May 02, 2012 8:47 am

Don't matter. Weld the spider gears in the diff. Make sure they are clean, and lots of heat/weld.
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dangeroustoys56
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PostSubject: Re: High-Low Range   High-Low Range Icon_minitimeWed May 02, 2012 8:17 pm

I wouldnt attempt to open that if it works - its literally full of gears and shims .
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Ropertractor14
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PostSubject: Re: High-Low Range   High-Low Range Icon_minitimeWed May 02, 2012 8:37 pm

Yeah these transmissions are quite complex, pretty much like a standard car transmission. I believe these use a different type of spider gear, judging the parts diagram. Looks like they are mounted externally to the ring gear and rotate around internal gears. Should be lockable. If you open it be careful it has to be opened on its side and on a certain side otherwise everything will fall out. I stuck a diagram up, not the same year or model as yours but they didn't change much over the years.

High-Low Range 917_2510
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https://www.youtube.com/user/GMCsierra1500
WellThatsSurprising
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WellThatsSurprising

Age : 23
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Location : East Bethel, MN

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PostSubject: Re: High-Low Range   High-Low Range Icon_minitimeWed May 02, 2012 10:18 pm

This is the actual diagram... help? please? Model #91725520
High-Low Range 00027510
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Stretch44875
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PostSubject: Re: High-Low Range   High-Low Range Icon_minitimeThu May 03, 2012 6:45 am

Only way to lock it is to go inside. If your not comfotable pulling it apart, maybe you could find someone who is?
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dangeroustoys56
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PostSubject: Re: High-Low Range   High-Low Range Icon_minitimeThu May 03, 2012 7:22 am

Oh - they also use 10w30 motor oil BTW - due to the tight spaces inside, a thicker oil wouldnt 'move around' as well - i herd that from a GT tractor site when i asked what type of gear oil to use in my GT II's trans ( same thing) .
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Hillbilly Homer
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PostSubject: Re: High-Low Range   High-Low Range Icon_minitimeThu May 03, 2012 1:28 pm

Very Happy Howdy yalll Very Happy
Long time builder and new to the forum.
This is a wonderful site with many good ideas.
Thank you for the opportunity to participate.

Its not the same as a locked diff but an alternative is to put Steering brakes on it.
Tire slips pull that brake!
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AcreFarm
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PostSubject: Re: High-Low Range   High-Low Range Icon_minitimeThu May 03, 2012 2:45 pm

^^^
Cutting brakes would be a good alternative for this transaxle. 1" keyed shafts are easy to find hubs for... also the housing & differential are strong enough to handle the stress.

Good idea, and welcome aboard Hillbilly Homer
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PostSubject: Re: High-Low Range   High-Low Range Icon_minitime

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