312-8 / 417-8 go BOOM

[The Gman 476]

Have a 312-8 I upgraded to a 417-8 and was cleaning up some stray snow with the plow in the driveway when you guessed it................ kaboom. The tranny got very ugly with me. Stopped dead in her tracks and started to make all kinds of rattles and clunks. Shifters are locked up and it's leaking gear oil out a crack in the bottom.

I have two rolling chassis, a C175 hydro with the hydro lift and a C160 manual.

Do you see any problems bolting up the C175 tranny to it.

The 417 has the electric lift so the rock shaft no longer has the lift handle.

 

Let me know pleeeeeaase.

[Snoopy11 5,714]

I can't help with your C175 swap question... but... Gary... you broke an 8 speed, 8 pinion? Wooooow... I'm impressed...

 

Don

[ebinmaine 68,258]

Hydros and manuals are two very different beasts in the shift linkage and steering tower areas.  

 

Your best bet for a quick repair is to get the manual transmission outta the C160 roller and use it in the 312/417 you had running.  

 

Or ....

 

Dismantling the current transmission to see WTH went out. 

Ain't easy to kill an 8 speed 8 pinion.  

 

It's legitimately possible you may be able to repair that one just as easily.   

 

 

[pfrederi 17,864]

Broke a differential bolt that got jammed between bull gear and case cracking it... My bet

[oldlineman 1,482]

I had one go in a 414-8,I was  lucky didn't do much damage, good luck. I would do what EB suggested, you would need a new case

 anyway or at least a half. Bob 

Edited November 25, 2022 by oldlineman

[The Gman 476]

It will definitely be torn down and documented, but that will be in the spring.

Sounds like my quickest fix is to bolt the C160 on it and go.

No room for it right now. Got a 654 in resto. and 520 with a 2 stage blower I'd like to get running (elusive no spark) for this winter as well

Thanks all

Snoopy.............. couldn't believe it myself. Thought it was bullet proof

[Bill D 1,932]

You could swap the KT17 in to the C175.  Having hydro lift while plowing would be great.

[953 nut 55,743]

The gear jammer to hydro swap would include the need of swapping out the shifter tunnel so you would have the shifter and hydro lift rockshaft.

The engine pulley would also need to be changed. Engine swap sounds like the best way to go. Are both engines battery ignition?  

[Bill D 1,932]

4 hours ago, The Gman said:

It will definitely be torn down and documented, but that will be in the spring.

Sounds like my quickest fix is to bolt the C160 on it and go.

No room for it right now. Got a 654 in resto. and 520 with a 2 stage blower I'd like to get running (elusive no spark) for this winter as well

Thanks all

Snoopy.............. couldn't believe it myself. Thought it was bullet proof

Since you broke the transmission case, take it apart, save the good parts and scrap the rest.  Put the c160 transmission in the 417 or swap the engine into the C175 if you know the transmission is good.

[JoeM 7,874]

8 minutes ago, Bill D said:

couldn't believe it myself. Thought it was bullet proof

I just think some of the toughest work on these machine is plowing snow, reversing direction, hitting things, weighted wheels, chains. figure a big difference from cutting grass going pretty much in circles. 

[mrc 840]

hi Gman,

     years ago i blew up the 8 speed in my 416-8.  what happened was what pfrederi says above.  a differential bolt backed out and got caught in between the gears. lots of carnage. luckily i did not crack the case.  somewhere on RS are the pics.  good luck

 

regards

mike in mass.  

[squonk 41,309]

9 hours ago, JoeM said:

I just think some of the toughest work on these machine is plowing snow, reversing direction, hitting things, weighted wheels, chains. figure a big difference from cutting grass going pretty much in circles. 

And tying to go to fast and shifting before the tractor is stopped.