Traction Front wheel drive not operating

[Ranchofla]

Ok, so I am no longer lurking, cause I think I broke my tractor yesterday. I have a CK20 HST that I bought a little over a year ago (used). Oh picture is below for those of you who like them.

So I was using my middle buster on a friends pasture yesterday when I heard a pop then my traction when to almost nothing. Figured it was the FWD, but had to finish what I was working on. Tinkered with it this morning and after taking the bend out to the control bar, I still do not have FWD, when I push on the lever it does not lock into a position at the bottom, it does at the top just fine. Tried the lever with the bar disconnected and same thing, no lock when moving the lever into FWD position.

So suggestions as to what I broke.

 

[Harry in Ky]

You might check the drive shaft couplers. Most compact tractors have splined shafts with couplers to drive the front axle, and on occasion the couplers, usually the front one, will force past the stop and become disconnected.

 

[joshuabardwell]

I read a story here on TBN a while back about a guy who was going downhill in 4WD mode with a heavy load and he blew some component of his front drivetrain--like where the drive shaft interfaces with the front axle. If my memory serves, this part is often designed to be the weak link in the chain, because it is relatively (ha ha) easy to repair, vs. a more substantial drivetrain component.

I'm surprised to hear you busted your FWD pulling a middle-buster. Usually it's loader work with no counterweight that busts them.

 

[Ranchofla]

You might check the drive shaft couplers. Most compact tractors have splined shafts with couplers to drive the front axle, and on occasion the couplers, usually the front one, will force past the stop and become disconnected.

Harry,

Thanks for the reply, I disconnected the shaft cover front and back and everything looked good and still connected.

Karl

 

[Ranchofla]

So after I started today's project. I jacked up the front of the tractor and turning either wheel, just turns that wheel, no locking no stopping, does that mean the front spline is broke? Guess I will look at taking that apart oh what fun..

Today's project


Rancho

 

[rider7767]

I hope this helps.

 

[ritcheyvs]

So after I started today's project. I jacked up the front of the tractor and turning either wheel, just turns that wheel, no locking no stopping, does that mean the front spline is broke? Guess I will look at taking that apart oh what fun...

The fact that you can turn one wheel with the other standing still means something is broken or disconnected in the gears of the front differential or (more likely) the bevel gears that connect the actual wheels to the front axle. Another list member had a similar problem that was caused by a failed circlip (as I recall) that allowed the gears to disengage. Maybe you can determine which side (assuming it is a side) is bad by turning each wheel while watching to see if the front axle turns, The axle should be visible through the axle oil fill hole, I think. If the wheel turns without turning the axle, that's good evidence of a problem with the bevel gears on that side. I'm guessing a little here here because I don't have a CK or a CK20 shop manual. Fortunately, I have not had to work on that part of my tractor. Good luck.

 

[Ranchofla]

Scott,

Thanks, I will check that out and see what happens.

Rancho

 

[Ranchofla]

Tony,

Thanks, I found a pretty good parts layout pdf and had been playing with the lever, and as I said in my first post, it does not appear that the lever locks in the 4 wheel drive location like it does in the 2 wheel drive position. More investigation will happen as I can get to it.

Rancho

 

[rider7767]

Tony,

Thanks, I found a pretty good parts layout pdf and had been playing with the lever, and as I said in my first post, it does not appear that the lever locks in the 4 wheel drive location like it does in the 2 wheel drive position. More investigation will happen as I can get to it.

Rancho

I have the digital service manual if you need specifics. I would send you the whole thing, but it is to big. I am on dish internet which is limited. I love living in the country, but the internet choices suck.