Go BottomBalky B7800 loader
 | Jelliott
Join Date: Jul 2003 Posts: 58 North Georgia 
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2004-02-02 75752
My LA 402 loader on my 35 hour B7800 was acting a little strange this weekend. I was transporting firewood from a stack in the yard to my front porch. The wood was green, and I really loaded the bucket to the brim.n It was a fairly heavy load, but I have lifted heavier loads of rock in the past with no problem.
As I have done several times before, I loaded and transported the wood with the bucket ~12 inches off the ground, and lifted it to ~5 feet in order to unload onto the porch. When I went to lift the loaded bucket, it moved VERY slowly for the first several inches, then took off and lifted as fast as normal. It did this on the first three loads, then performed normally for the remaining couple of loads. I thought I may have air in the system or something, so I cycled the loader from full up to fully down several times after I first experienced the slow initial lift problem. It seemed to function normally when unloaded, but was still slow for the next two loads.
I'm not sure if this is a problem or not. One thing I should maybe mention is that it was very cold this weekend, at least by north GA standards, probably around 30 - 35 degrees. I don't know if the temp was a factor. I bought my B7800 last June, and this was the first time I used it in temperatures at, or just above freezing. What's the concensus? Is this normal, or do I need to see my dealer? Bear in mind that the loader functioned perfectly normally after the first three bucketfulls. This was not much of a hinderace, it just made me a little nervous as I had not experienced this phenomenon before.
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 | itsgottobegreen
Join Date: Oct 2003 Posts: 329 Mt. Airy, MD
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2004-02-02 75757
I know my la302 on my b7500 has very slow loader functions when you leave it out side in the cold. My bucket curl usally doesn't want to go down very fast if at all. But goes up with no problem. I did have the loader not come up once when left out side for 2 days in 5 degree weather. That was fun. Unclipped the hoses. Jacked up the bucket and plug them back in. Parked it in the garge for a day and had no problems. If there is any mositure in the lines it will freeze up or the hydro fluid will jell. I just changes the hydro fluid and haven't had it happen again. Also my dad'd car lives out side while my tractor lives inside. He finally decided to build another 2 bay garage. ....
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 | plots1
Join Date: Jul 2003 Posts: 563 mo 
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2004-02-02 75759
Might check the hydro filter,I change mine out with about that many hours and found more crap on the screen then I would of liked too. ....
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| TomG
Join Date: Feb 2002 Posts: 5406 Upper Ottawa Valley 
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2004-02-02 75765
To test if it's normal and due to the temperature you might give the tractor longer warm-ups or work the TX a bit under load. Moving the loader up and down without load and holding the relief valve open for awhile when cycling it will help warm the oil. Screen cleaning and filter changing on general principal is a pretty good idea.
It's hard for me to imagine that 30-degree temps would affect it like that since 30 degrees would be a very warm days for me this time of year. I often work the tractor at minus 10-20F and haven't seen slowed lifting speeds. I do use a multi-season oil though. At those temps, placing the loader in float does ease the bucket down in slow motion when oil has been in the cylinders a few minutes and chills. ....
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| itsgottobegreen
Join Date: Oct 2003 Posts: 329 Mt. Airy, MD
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2004-02-02 75797
plots my screen had a lot of fillings for only having 150 hours on it. The 1st owner never changed it. I hope it just from the machining process at the factory. ....
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| Jelliott
Join Date: Jul 2003 Posts: 58 North Georgia
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2004-02-03 75824
Thanks for all the advise. I believe I will let it ride for now. If there is a problem, I'm sure it will as problems do, get worse not better.
The temp. was in the teens the night before I used the tractor, but had warmed to the low 30's. The hydraulic oil was possibly still much cooler.
Unless I experience more problems, I'm going to hold off another 15 hours and change all the fluids/filters at 50 hours per Kubota's recommendation. ....
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