Another thing to look at on my 648
Posted: Sun May 22, 2022 8:43 pm
First the disclaimers:
1) I have no doubt this has been discussed 1000 times. Please keep in mind this is my first GT. And first time working on a hydraulic drive system.
2) ras101 has posted a similar topic on travel control, but my understanding is the 446 and 648 are set up different. If that is not the case please let me know and we can discard this post.
So now that I’ve started using the machine I notice it seems to have trouble moving on uneven ground. Part of the problem is I don’t know what the characteristics of the 648 or any similar tractor should be. I would put it at anemic bordering on gutless going up hill.
I got my first clue the other day backing it out of the shop. When I depressed the foot control I noticed the direction control lever moved on its own. I held the lever in place and had much better response and a much better pedal. It was soft with a lot of free travel before.
A quick check of the owner manual showed me this is a common adjustment point. I’ve looked through the technical data here and read quite a bit online. It seems pretty straight forward. I see where the wear points would be. And how it should work.
You guys have made this repair before, I have not. What are the tips, short cut, things to know that a 1st timer wouldn’t pick up from looking at pictures and reading technical data.
Just like the power steering cylinder, I don’t think this repair is an emergency and may get put off till fall depending on how the other irons in the fire go.
This may come down to just needing adjustment, or, I may be rebuilding the linkage.
At this point I’m just gathering information, it makes it a lot easier for me when I’m actually turning wrench.
Thanks for taking a look and for you thoughts.
1) I have no doubt this has been discussed 1000 times. Please keep in mind this is my first GT. And first time working on a hydraulic drive system.
2) ras101 has posted a similar topic on travel control, but my understanding is the 446 and 648 are set up different. If that is not the case please let me know and we can discard this post.
So now that I’ve started using the machine I notice it seems to have trouble moving on uneven ground. Part of the problem is I don’t know what the characteristics of the 648 or any similar tractor should be. I would put it at anemic bordering on gutless going up hill.
I got my first clue the other day backing it out of the shop. When I depressed the foot control I noticed the direction control lever moved on its own. I held the lever in place and had much better response and a much better pedal. It was soft with a lot of free travel before.
A quick check of the owner manual showed me this is a common adjustment point. I’ve looked through the technical data here and read quite a bit online. It seems pretty straight forward. I see where the wear points would be. And how it should work.
You guys have made this repair before, I have not. What are the tips, short cut, things to know that a 1st timer wouldn’t pick up from looking at pictures and reading technical data.
Just like the power steering cylinder, I don’t think this repair is an emergency and may get put off till fall depending on how the other irons in the fire go.
This may come down to just needing adjustment, or, I may be rebuilding the linkage.
At this point I’m just gathering information, it makes it a lot easier for me when I’m actually turning wrench.
Thanks for taking a look and for you thoughts.