NH TC45D creeping

[dynasim]

Y'all

I have recently purchased a NH TC45D SS 17LA, originally thought to be a 2002, but it turns out was made in 2000. I paid 16,500 and it has 1200 hrs.

I have learned much from this forum, and hope to contribute in the future, but I am still learning.

I will be using it to load, unload, and move industrial equipment, help in light construction activities, as well as doing on-call mowing and snow removal.

I purchased this specific model to maximize the fel and tph capacity while fitting on a 1/2 ton pickup capable trailer.

An issue that I haven't seen addressed that I need to fix(I was aware of it before I purchased) is that it creeps forward when I let off the forward hst(or the reverse hst) pedal. This is not a spring problem, but a centering problem as it creeps when I let off reverse. Can someone give me guidance as to where to look. Can I just recenter the cam? by loosening and turning a shaft in a block?

This is not critical for lifting items, but is dangerous when working in tight spaces.

Best Regards
Chris

 

[George2615]

I have a different brand tractor but my HST will also allow the tractor to creep both forward or backward depending on which way I was last traveling. Usually I just rock the HST pedal back and forth to center it again. The best way to prevent creep is to jamb on and lock the brake pedals which you should be doing anyway if you get off the tractor while it's still running.

 

[dynasim]

If I keep the brake on, I can't get it out of gear, and you can tell the tractor is under a small load. Also, if I joggle the reverse pedal to center the drive, it starts moving as soon as I let go.

Thanks for your help.
Chris

 

[DocHeb]

1. If I keep the brake on, I can't get it out of gear, and you can tell the tractor is under a small load. Also, if I joggle the reverse pedal to center the drive, it starts moving as soon as I let go.

2. This is not a spring problem, but a centering problem as it creeps when I let off reverse. Can someone give me guidance as to where to look. Can I just recenter the cam? by loosening and turning a shaft in a block?

Thanks for your help.
Chris

#1. Getting your tractor in and out of gear sometimes requires a small tap on the "go pedals" to get the transmission gears to sync. This is normal.

#2. There are adjustments. I've attached two pages from the owners repair manual that describes the procedure. Make sure you grease everything, including the edge of the bean-shaped HST plate under the driver's platform

 

[jinman]

Chris, do what Chris says...I mean what DocHeb says.

Turn the tractor off and get under that right platform. Operate the pedals and become very familiar with what they do. Check out the adjustable stops and the adjustments as DocHeb posted.

The pedals just rotate a shaft going into the transmission. That's all there is to it, one shaft. When that shaft is centered in the right position, the tractor will stop.

Good luck with your tractor and congratulations. I think you'll like the TC45D, but you may find it needs to be gone over and a lot of things tweaked and lubed to get everything working. I do want to caution you about the HST pedals and the welds on the early tractors. My pedal mechanism had some problems and broke early on in it's life. I just hope you don't have the same problem. Mine could have been an isolated case of a poor weld. As far as I know, I'm the only one on TBN whoever had this problem.

 

[dynasim]

Y'all

Thank your for your advice, and I think that will do. I thought that was the the way to go, but wanted to get confirmation.

I have read both of your historical post(before and after my purchase), and I want to thank you for the education.

I grew up on a farm with ooolllddd tractors, and this new toy is amazing. If they had this 30 years ago, my Mom and Dad would not been required to have 10 kids to work the farm!

Thanks again
Chris

 

[DocHeb]

There is another classic problem with the earlier Class III Boomers. The HST pedals had a tendency to not return to neutral when the tractor is under load and your foot comes off the pedal. This can be quite disconcerting, to say the least. Several factors contribute to this: Inadequate return spring tension (there is a technical service bulletin for this, and a repair kit that has a stronger return spring); operation of the tractor at low RPM while under load (fixed by always running >~2200 rpm); and inproper lubrication of the "go pedal" mechanism.

See also: http://www.tractorbynet.com/forums/nh-owning-operating/31792-hst-just-wont-stop-quit.html?highlight=woah

http://www.tractorbynet.com/forums/nh-owning-operating/18118-hst-pedal-sticks-under-load.html?highlight=pedal

 

[dynasim]

When I first test drove the tractor, I looked up the issue here, and that is what I thought was wrong. The fact it always moves forward, even after reverse, however, points me to your first solution. Also, the spring feels stiff, and there is definite pushback all the way to neutral.

I will be sure to lubricate things up, also.

Thank you again.
Chris

 

[dynasim]

Chris(DocHeb),

I adjusted the creep out of the system using your instrunction sheets as guidance. Thanks a million, as it was easy and worked. I would not have been able to figure that out on my own, as it was not obvious.

Thanks again.

Chris(dynasim)

 

[jim46ok]

Fixed TC45D "creep" today. Looked at DocHeb's pics, (thanks!) but adjusted mine without jacking up tractor. I did NOT adjust it with engine running!!

I marked position of the large hex nut, and loosened the center lock bolt. I found moving the large hex nut about 1/4" COUNTERCLOCKWISE, or LEFT, centered the control. Then tightened the lock bolt.

It may take you 2-3 tries. Best thing now, is it shifts into and out of gear easier, I guess 'cause there is not the pressure on the trans...anyway, 10 minutes and problem solved.....geez there is a lot of info here, and thanks to everybody!!