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QT16 Quit Jerking


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#1 chieffan OFFLINE  

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Posted June 13, 2017 - 02:26 PM

Picked up this QT over a year ago.  It has always had a jerking when pulling up a grade going forward.  Reverse and level or down grade was fine.  Was going to drop the rear end and see if anything was out of line.  Didn't get to it so it sat all winter. with no fluid.  Yesterday I needed to mow a small pasture and wanted the QT as the deck will raise a lot higher than most.  Filled it with fluid, fired it up and went off to mow.  Run for about a half hour & got about half of it done, jerkin away if it tried to hold a steady pace so had to keep varying the ground speed.  This morning went back to finish up.  Started out the same way, wanting to jerk on up grade.  Was doing a lot of forward/reverse moving and suddenly the jerk was gone.  Drove it up a good hill to the shop and it ran smooth.  Let it cool a while and headed back to the machine shed, up an incline into the shed and it was smooth as could be.

 

I have tried various things with this unit and probably put at least 2 hours on it last summer trying to work out the problem.  Could it possibly have been air in the system some place that took this long to work its way out?  I did go backwards fairly fast a few times.  Would this have an effect on getting the air out - if that was the problem?  I don't want to blow my horn to loud just yet till I see what happens next time I want to use it in a couple days.


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#2 Rainier OFFLINE  

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Posted June 13, 2017 - 02:37 PM

I had a similar problem with my 1556. I love it when they fix themselves!
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#3 Cvans ONLINE  

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Posted June 13, 2017 - 03:18 PM

Sounds like it could have been varnish making something sticky. Sometimes when you get the Tranny nice and hot the varnish will soften and move on. Might be a good idea to change the filter in a couple of days. 

Nice when it happens. Whatever it was it saved you a lot of work.  :thumbs:


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#4 boyscout862 OFFLINE  

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Posted June 13, 2017 - 04:26 PM

I agree with Cvans. The oil change probably made the difference. Change it again. Good Luck, Rick


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#5 chieffan OFFLINE  

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Posted June 13, 2017 - 05:20 PM

Sounds like it could have been varnish making something sticky. Sometimes when you get the Tranny nice and hot the varnish will soften and move on. Might be a good idea to change the filter in a couple of days. 

Nice when it happens. Whatever it was it saved you a lot of work.  :thumbs:

 

 

I agree with Cvans. The oil change probably made the difference. Change it again. Good Luck, Rick

I changed the fluid and filter when I got it.  Had 2 hours on it till the fresh oil yesterday.  I think I will mow with it about Friday which will pu another couple hours on it, then change the filter.  I use Baldwin filters on everything. 


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