C-125 8 speed won’t go in gear

[rsmall5206 6]

Hello

 

i recently got given to me a c-125 with 4 gears snd hi/lo range. I have tried to put it to gear but it seems to be stuck in neutral and same for the hi/lo. This has been sitting for a while outside any suggestions 

[The Tuul Crib 7,338]

Is the belt guard in place?

it helps stop the belt when the clutch pedal

is depressed.

[rsmall5206 6]

Stupid question. Does the tractor have to be running to get it in gear? I am still waiting on my carb to get done.

[71_Bronco 1,072]

If its not running, try pushing the tractor forward or back a little. The gears inside are straight, flat cut for the most part, so it could be that you are just hitting the ends of the gears.

 

If its been sitting outside, I'd suggest changing the oil in it, and checking the rubber boot on the shifter handle.

[Pullstart 64,533]

, nice free score!

 

It might be a good idea to drain the transmission right off the bat and fill it to the brim with diesel fuel for it to sit a month or two.  

[rsmall5206 6]

Ok what does the diesel do for it

[Achto 28,779]

16 minutes ago, rsmall5206 said:

Ok what does the diesel do for it

 

Works as a penetrating fluid and cleanser. 

 

Might also be a good idea to pull the shift lever out and see if the shift pawls are stuck in one position. 

[stevasaurus 23,065]

First thing to do is what Achto said.  Lift the boot, pull the shifter and look inside.  If it looks rusty and the forks are froze in place, I would open the trans.  Try using a large screwdriver to move one of the shift forks, but don't go all out trying to force the issue.  Then drain out what is in the trans and see what that looks like.  Let us know and we can go from there.  How long has this horse been sitting?  

[rsmall5206 6]

5 to 10 years 

[rsmall5206 6]

When checking the oil with the dipstick looks good and clean

[oliver2-44 10,368]

38 minutes ago, rsmall5206 said:

When checking the oil with the dipstick looks good and clean

Sometime with it sitting a long time the water settle to the bottom and the oil looks clean on top.  verses if its run with water in it the oil will look milky gray or tan.

If it has a good rubber boot on the shifter that's a good thing.

But even then with it sitting outside 5-10 years water can get into the oil.

[stevasaurus 23,065]

The shift rails are above the level of the oil, they would only get lubed if the horse was running.  BTW, the hi/low shifter is above the oil level also.  Oliver2-44 is correct.  With no lubrication, these transmissions are subject to condensation, even with a good boot, and that could rust the shift rails if it has been sitting that long.  Pull the boot up and remove the shifter and see if you can pry the shift forks with a heavy screw driver.  Let us know what you find.  

   Don't use just the shifter to force things, you could break off the end and then you will have to open the trans.  The end of your shifter could tell us something also.

[rsmall5206 6]

Another dumb question how do you take the shifter off? The boot was completely junk

[stevasaurus 23,065]

There is a Dog Point set screw under the shifter boot.  It has a lock nut on it.  Take a long 1/8" Allen Wrench to reach in from underneath the tower and loosen the lock nut...turn out the set screw and lift out the shifter.  It takes me longer to type this then to do it.  

[stevasaurus 23,065]

Check this thread...

 

 

[rsmall5206 6]

Ok thanks I will look at it tonight 

[tunahead72 2,518]

1 hour ago, stevasaurus said:

Check this thread...

 

 

 

That's a great thread!

 

[rsmall5206 6]

Ok so I pulled the shifter was not able to pry anything. Looks rusty inside. Drained oil and bunch of water came out first then oil. Is it junk?

[rsmall5206 6]

[tunahead72 2,518]

4 minutes ago, rsmall5206 said:

... Is it junk? ...

 

Probably not, but I'll let the other guys point you in the right direction here.  These trannies are tough, and respond well to repairs.  I've never taken one apart myself, but there's several good videos here that will show you how, and lots of advice free for the asking, I wouldn't hesitate if mine needed to be done.

 

[Mickwhitt 5,016]

Definitely not junk, but some work to strip it from the chassis and then deal with what you find when you split the box is not a days work. 

As with all Wheelhorse surgery its pretty straightforward if you have a decent grasp of mechanics. I wouldn't advocate attempting in depth repairs unless you were confident you could do the work, or were fortunate enough to have someone to dig you out of any holes you got yourself into.

I'm not being mean about you as I don't know your level of skill or expertise. But some folk I have seen on other forums ask which end of a screwdriver you knock nails in with and you just know things are not going to end well. 

If you can wield a spanner then this place will get you through most operations including a transmission overhaul.

I have some photos of my gear box in pieces if you would like to see what you will find inside there.

Mick 

[71_Bronco 1,072]

I'd say its savable... to the right person.

 

If you're looking to flip it, this could be a money pit that you wont make a profit on. If you'd just looking to tinker, and use it when done, absolutely savable.

 

With the rust we can see, it may not be the smooth-est, quiet-est trans once you're done, but that doesn't mean it wont work. There's a member on here who had a completely brown, rusty, crusty trans that he saved.

 

On the plus side, you can get all new seals, bearings and gaskets for this (if you need them). But like I said, its pretty much a labor of love at this point.

 

On the plus side, as others have said, they are pretty stout transmissions and can be saved.

 

Side Warning: If you do pull the transmission to split it, be very careful taking off the hubs. Using a standard 3-jaw puller can break them.

[stevasaurus 23,065]

Electrolysis is probably the answer here.  It is easy and cheap.  I was able to save this rusted trans...

 

 

All you need is a 5 gallon bucket, a box of washing soda (not baking soda), water and a battery charger...oh, and a sacrificial piece of steel or iron.  Explain the process later.

 

This is the set up...

 

Then the process starts...

 

After a few days...part are rust free and movable.  Just need to wire brush to put back together.

 

 

The above picture is about 1/2 done.

 

[rsmall5206 6]

Thanks everyone. Not sure what I am going to do yet. I have a little mechanic skills but not sure about this yet. I Had a local guy tell he has transmission 8 speed from a b-80 but will fit is the question?

[stevasaurus 23,065]

The trans from the B-80 will fit, but it may have 1" axles instead of 1 1/8".  Something to check.  Don't throw out that transmission, it is very fixable.