B7500 Noise

jbcat2 · Jan 8, 2005

I have a 2 y/o B7500 hydro with 175 hrs. While using the loader to move snow I have been hearing what seems to be a squealing noise coming from underneath the tractor or from the front end. It only happens when in 4wd and more in reverse. It seems to get louder after working it awhile. I put the tractor on jack stands and ran the tractor in both 4wd and 2wd and the noise would not sound. I checked the fluid level in he front axle and it was about 1/4 qt low and I topped it off. Noise still there. with front end off the ground, both wheels spin free and without any grinding. Anyone else have this problem??? /forums/images/graemlins/confused.gif

GregJ · Jan 8, 2005

A very common problem with the B7500 is the hub tension bolt coming loose. It should be torqued about every 50 hours. When it comes loose it creates a squealing/ginding type sound. The bolt can be found on the back side of the hub. It tightens a shim which holds the hub on the axle.

Hope this helps,
Greg

jbcat2 · Jan 8, 2005

Thanks for the reply, now trying to find the bolt your describing. Took both fron wheels off and every bolt I find feels tight. Still looking.

GregJ · Jan 8, 2005

I should have been more specific. It is the rear hubs. You can do it without removing the wheels.

Greg

jbcat2 · Jan 8, 2005

After reading your reply for a bit, I figured it to be the rear. I found the right one somewhat loose. Tightened it, tried it out and could not hear the noise. When you hear a strange grinding noise, it amazing all the bad thaughts that run through your mind$$$$$. I just keep telling myself that its impossible to kill these machines! Thanks - JB

GregJ · Jan 8, 2005

JB.... You just experienced what I think every other B7500 owner has, or will experience at one time or another. I think we all felt the same relief when it ends up costing us a little elbow grease instead of a few hours of shop time.... /forums/images/graemlins/grin.gif

Greg

GregJ · Jan 8, 2005

JB,
Another followup. It may be necessary to completely remove the hub and clean them before you can really get a good torque on them. Mine actually came loose enough the first time that I have some wear, which resulted in a slight wobble on my right wheel. I torque it to at least 110lbs. now.

Greg

jbcat2 · Jan 9, 2005

I will have to try that. When I was putting the tractor away last night I could hear the noise. The noise almost sounds like one of the anti scalp wheels on the mower vibrating. Unfortioniatly the mower is in the barn!!! Thanks - JB

hwew · Jan 9, 2005

Another thing worth mentioning here is I found out that I get a squealing noise under the hood (on the left side near the axle no the b7500 and on the right ride on the bx2200)
It happens only a few seconds after startup while idling during warmup and goes on for about 2 minutes then goes away.
I found that it comes from the engine oil filter.
Kubota part #15241-32093
I bought 23 of these filters because I thought bigger filter means more filter paper inside.
I don't know if the newer smaller style kubota filters also do this.
I noticed the noise on both my bx2200 and my b7500.

So what I am trying to say check this out also.

btolle · Jan 9, 2005

Grab the roll bar and see it that is the source of the rattle. My B7510 roll bar rattles (almost a buzz at times). I tightened the bolts, helped just a little but still rattles. I have learned to live with it since I know it is not anything serious.

Bill Tolle