Simplicity Conquest transmission

[Lougill]

Hello
I am new to the form, but have an unusual problem that happened yesterday mowing with my 2004 Conquest 23 HP Briggs. During the mowing of the lawn, the transmission started to randomly lock up in reverse, I mean dead stop the tractor, then a about 15 min later I look behind the tracker and transmission fluid is running out!! I stop mowing and park the tractor here is what it looks like under the transmission???

Any advice or help will really be appreciated!!!

Thank you

Lou

 

[dfbroxy]

Looks like you ran over a stick or piece of metal and it popped up and busted a hole in the trannie. Either buy a new or used trannie or buy a lower housing for yours and replace. One other way is tell wife mower is shot and buy a new one LOL.

 

[Rivets]

To me it looks like something let loose in the tranny and broke the tranny from the inside out. Either way you are in for any expensive repair or new unit.

 

[Lougill]

Does anyone have a source for used or rebuilt transmissions? How hard is to rebuild? Should mention the tractor has 250 hours

 

[Lougill]

Update the differential lock wasn’t disengaging, any thoughts from the crowd?

 

[bertsmobile1]

Rule of thumb with holes.
If the side slope in the fracture went outside to inside.
If the sides slope out then the fracture was inside to outside
just like a bullet passing through a body the exit side hole is usually bigger than the entry side hole so the edges end up sloping.

A moot point as the tranny is apart and there is metal shavings in the case .
There is no diff lock ASAIK.
The brake works by locking the lay shaft which in turn locks the diff so the wheels can only turn in opposite directions.

 

[Lougill]

Update the diff lock didn’t want to disengage!

1

 

[tom3]

Not sure of the whole situation. But if the gears can be salvaged I'd remove the lock parts and make a patch for the outside of the busted case. Form a piece of metal pretty close to the case shape, use JB quick Weld to glue it together. (the quick has a bit more body, not as runny) Refill with lube. The now open type differential should work for years like this. Heck, it's a lawnmower.

 

[mechanic mark]

https://mulliganspartscompany.com/k66-series/

 

[cruzenmike]

Definitely looks like an internal failure. The issue with rebuilding or repairing your transmission is that any contamination or metal fragments inside along with any damaged internals that you do not replace along with the case will lead to another failure and quickly at that. With 250 hours that is not so much that you should be considering a new mower but it should get you to thinking buying a used working hydrostatic before dropping $1000+ for a new unit. A comparable Simplicity will cost you over $5000 in today's money so if everything else works on the mower you can be back in action for 1/5 of that.