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I have a 2006 ZForce50 that I am having trouble with one of the hydro transmissions on. The right side is sticking and not driving as well as the left side. It is usable, but very frustrating. I am looking for any advise on servicing or repairing the hydro, part number I have from the online manuals is Cub Cadet 01008193. Any help would be appreciated. I saw a thread about changing the gear oil, is there a procedure available for doing that? Thanks

There are numbers on the hydro its self. Im not finding what I need to tell you what to do.

I couldn't see any numbers on the Hydro, but I haven't pulled it yet either, might be on the top side. Model number for the Mower is 53AA5B7p710 with a SN 10D136Z02035 03/2006. Left handle moves forward and reverse with ease, and recenters when released. Right side requires force in both directions and has to be centered, will not recenter. Thanks for a quick reply.

TRMPyro said:

Right side requires force in both directions and has to be centered, will not recenter. Thanks for a quick reply.

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With engine off do you have same problem?

Yes, no difference that I recall, running or not. When I went out to look for the numbers I moved the handles without it running, very difficult on right side.

TRMPyro said:

I have a 2006 ZForce50 that I am having trouble with one of the hydro transmissions on. The right side is sticking and not driving as well as the left side. It is usable, but very frustrating. I am looking for any advise on servicing or repairing the hydro, part number I have from the online manuals is Cub Cadet 01008193. Any help would be appreciated. I saw a thread about changing the gear oil, is there a procedure available for doing that? Thanks

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Which hydro units do you have? EZT or 2800

Based on the Parts Tree diagram and the parts manual, they are IZT.

Have a close look at the linkages and pivots, they occasionally need some lube.
The control rod on the hydro has no resistance to movement is it just a valve, like your fuel tap.
All the hardwear between the hydro & the lap bar provide the centering and resistance to movement.

TRMPyro said:

Yes, no difference that I recall, running or not. When I went out to look for the numbers I moved the handles without it running, very difficult on right side.

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My hydro's act different with the engine not running. I would check the linkage for dirt and needing lubed.

bertsmobile1 said:

Have a close look at the linkages and pivots, they occasionally need some lube.
The control rod on the hydro has no resistance to movement is it just a valve, like your fuel tap.
All the hardwear between the hydro & the lap bar provide the centering and resistance to movement.

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Darn fast typer compaired to me.:laughing:

I agree with Bert. It's going to be in the linkage.
It should have a neutral return spring.

I believe I found the issue, thanks to the comments I received. Took off the linkages tonight and traced the sticking of the right handle to the cast aluminum bellcrank assembly that the linkages attach to, that is supposed to rotate around the Bellcrank Steering Shaft Assembly.....wasn't able to freely rotate and was sticking. I had to replace one of the cast aluminum bellcrank assemblies last year because one of the ears broke off, might not have reassembled it correctly. So my question is, what is the procedure for assembly? Do I lightly sand the shaft and lubricate before installing the linkage connector? Thanks for all the feedback, this is a much better situation than having a failed hydro.

Yes, clean the surface and apply some dry ludricant like lithium chassis grease or oany of the dry lubes you will find at push bike shops.
If there is a plastic bush then a couple of drops of kerrosene ( parrafin to some ) works wonders.
The operators manual will tell you to lube with oil either daily or weekly but oil will pick up dust which is why you need a dry lubricant.