rear diff spider gear busted in 1601D

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79coyotefrg
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rear diff spider gear busted in 1601D

Postby 79coyotefrg » Thu Mar 21, 2019 5:17 pm

My good friend Doc Clary called and said his tractor wouldn't move unless he used the diff lock. When I got there to see it I immediately thought something broke in the differential.
I followed agirlandhertractor's extensive write up and used that to get in there. I found the left side brake was froze solid with rust , hoping that was the problem but No. I knew the right side wheel seal was leaking so I might as well go that far to get that fixed.
That's when we found the spider gears in several pieces in the bottom of the housing.

I am fairly positive to get the differential out I need to remove the "trumpet" housings (where the brakes reside including the axle housing) But I am hoping someone will tell me a much quicker way.
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winston
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Re: rear diff spider gear busted in 1601D

Postby winston » Fri Mar 22, 2019 5:06 pm

Have not been there done that. Juwt looking at agirlandhertractors thread I am not sure you would have to remove the axle housings. Maybe just the hydraulic lift assembly and brake assemblies. Looks like maybe the differential carriers might come out then.

79coyotefrg
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Re: rear diff spider gear busted in 1601D

Postby 79coyotefrg » Fri Mar 22, 2019 6:49 pm

I talked to a friend that works for a tractor maintenance and repair shop in NewJersey and he said the "trumpets" had to come off and then the differential would be easy to get out.
I will try and get pictures as I go tomorrow.

79coyotefrg
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Re: rear diff spider gear busted in 1601D

Postby 79coyotefrg » Sun Mar 24, 2019 6:27 pm

winston wrote:Have not been there done that. Juwt looking at agirlandhertractors thread I am not sure you would have to remove the axle housings. Maybe just the hydraulic lift assembly and brake assemblies. Looks like maybe the differential carriers might come out then.

we found the axle housings had to come off to get to the differential carrier bearings. there was about a 1/4 inch of metal on the housing that wouldnt allow the bearing caps to come past.
Bad news, I messed up a shim. God knows where to find those.

winston
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Re: rear diff spider gear busted in 1601D

Postby winston » Mon Mar 25, 2019 4:43 am

Don't know which shim you are needing but if it could be similar to 45,46,47 here it would seem to me you could make them out of shim stock. https://www.hoyetractor.com/CTGY/1600BRAKES.htm

79coyotefrg
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Re: rear diff spider gear busted in 1601D

Postby 79coyotefrg » Sun Apr 28, 2019 8:36 pm

After removing the trumpet housings it took serious effort removing the stub gear assembly and the differential itself.
I am doing this on my phone. I will load pictures and edit later on the desktop.

79coyotefrg
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Re: rear diff spider gear busted in 1601D

Postby 79coyotefrg » Sun Apr 28, 2019 9:40 pm

removing the PTO box.
A girlandhertractor's post was amazingly good help getting this started

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brake drum
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right side trumpet housing
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removing the diff lock lever required driving out the roll pins and sliding it out to the right side
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DO NOT do this to get these (i call them stub gear housings)
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notice the shims? they are on top and bottom and these set the mesh of the ring and pinion gears.
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right side stub housing and the differential carrier
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disassembly of the diff to get to the busted spider gears BUT we didnt realize the diff carrier was damaged
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rebuilding the stub axle housings
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the "new to US" diff carrier housing (this was NOT CHEAP FOLKS)
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first try with the new spider side gears and THICK washers shims.
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.027 inch
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after several attempts we found a .018 shim locally that fit perfectly
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left side stub axle housing. Notice the shims
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if you need help translating Japanese. Thanks to BigMike and his Japanese wife.
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Going back together I used some blue loctite on the ring gear bolts
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stripping all the old gasket material
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ITS IN!!! OMG IT'S BACK IN!!!
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winston
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Re: rear diff spider gear busted in 1601D

Postby winston » Mon Apr 29, 2019 5:08 am

Wow, great pictures, these are bound to help folks in the future. Thanks for taking the time to do this. Are you up and running?


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