cub lo-boy transmission problem

IH CUB Lo-Boy Series - 154, 184, 185 Forum -- Questions and answers to all of your Lo-Boy related issues.

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JerseyLoBoy
Posts: 6
Joined: Sat Nov 19, 2016 3:02 pm
Zip Code: 07716
Tractors Owned: 185 Cub LoBoy

cub lo-boy transmission problem

Postby JerseyLoBoy » Sat Jan 14, 2017 9:51 pm

Folks I am having an issue with my 185 shifting. Pulled the shifter and found the forks in place but very loose on the two shafts, is this normal? The bolts holding the forks are ok and tight. Any suggestions. It seems like all the links you refer to above are not working anymore.

Eugene
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Re: cub lo-boy transmission problem

Postby Eugene » Sat Jan 14, 2017 10:39 pm

The forks are suppose to be solid, not floppy.

Try a lock washer under each bolt. If the lock washer is not sufficient to tighten up the shifter forks, then you will have to do some investigation.
I have an excuse. CRS.

JerseyLoBoy
Posts: 6
Joined: Sat Nov 19, 2016 3:02 pm
Zip Code: 07716
Tractors Owned: 185 Cub LoBoy

Re: cub lo-boy transmission problem

Postby JerseyLoBoy » Sun Jan 15, 2017 9:26 pm

Eugene,

Is there a service manual that shows how the rails, detents, forks and such are removed? There is currently lockwashers under the bolts so it seems I need to take this apart more to see whats going on underneath.

JerseyLoBoy
Posts: 6
Joined: Sat Nov 19, 2016 3:02 pm
Zip Code: 07716
Tractors Owned: 185 Cub LoBoy

Re: cub lo-boy transmission problem

Postby JerseyLoBoy » Sun Jan 15, 2017 9:38 pm

i should mention the transmission was shifting perfect until my brother used the tractor and didn't know that you had to stop in order to shift into another gear. He was trying to shift on the fly and that seems to be a no go.

tst
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Re: cub lo-boy transmission problem

Postby tst » Sun Jan 15, 2017 9:52 pm

shift forks can crack on these mostly on the under side where its hard to see, use a small mirror to check for cracks, take the bolts out of the forks and check for wear, I have seen many worn when they get loose so they will not tighten up and the bolts need to be replaced

Eugene
Team Cub Mentor
Team Cub Mentor
Posts: 15371
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Re: cub lo-boy transmission problem

Postby Eugene » Sun Jan 15, 2017 10:02 pm

The parts manual for a Numbered Cub or a standard Cub will show the parts you want. Transmission parts in both tractors are close to identical.

Take the bolt out of one shifter fork. You can then remove the shifter fork and see what's going on.

Just checked my 154's parts book. The bolts/screws are identified only by IH part number.
I have an excuse. CRS.

outdoors4evr
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Zip Code: 48423
Tractors Owned: 184
Location: Davison, MI

Re: cub lo-boy transmission problem

Postby outdoors4evr » Tue Jan 17, 2017 8:54 am

Once they crack, they tend to slip out of gear in Reverse or First. Some people weld them up, but you can buy newly manufactured ones from HamiltonBobsCubs (Site sponsor). Here is a link to the first/reverse shift fork.
http://hamiltonbobs.com/cart/product/1strev-gear-shift-fork-p5547/drive-train-c63/ih-m13/154-cub-lo-boy-mm4
184 w/ Creeper & 3-Point
IH 3160a Mower
IH Model 15 Tiller

JerseyLoBoy
Posts: 6
Joined: Sat Nov 19, 2016 3:02 pm
Zip Code: 07716
Tractors Owned: 185 Cub LoBoy

Re: cub lo-boy transmission problem

Postby JerseyLoBoy » Sun Mar 19, 2017 8:44 pm

Folks wanted to follow up. I found a broken shifter cup along with a cracked shifter fork. Classic issues described by all here. I appreciate the help.

SONNY
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Re: cub lo-boy transmission problem

Postby SONNY » Mon Mar 20, 2017 8:40 pm

Glad you found the problem!!!! thanks; sonny
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