Hpw tipsy are backhoe loaders? Cat 426b

[Piston]

Piston, it sounds like your rear tyres are too soft. Look on the side wall of the tyre, and you should find some writing stating the max pressure. Compare this with the actual pressure. After that you can increase the pressure until you are satisfied with the stability.More air means more stability and a harder ride. NOTE if the tyres are "loaded", then you must rotate the tyre so the valve stem is at the top of the rim then let the last drip out of the valve. Then you can take the pressure reading accuratly AND with out rusting up the guts of your pressure gauge. Most people forget this.
good luck

Thanks for the tip, I know my pressures are rather low so that could certainly be the problem. I will try bumping it up to max.

 

[TractorGuy]

Best to stick with the low pressures unless you want to be replacing tires. I set mine at the 32 listed in the manual and didn't take long for a small stump nub to cost me a $600 tire. I keep mine at 20 psi now. Follow the advise to keep the loader low and be careful. After you dig a stump out make sure to pack the dirt as you fill the hole. Otherwise you may create a very dangerous soft spot. I learned this the hard way. I eventually had to lift the tractor with the hydraulics on both ends and put logs under the tires to get it out. Now I rake dirt in and pack with the heel of the BH bucket in layers. I finish by pushing the last layers in with the loader and drive back and forth over the area repeatedly to pack it back.

 

[redman135]

Piston, it is unlikely you will need or want max pressure. On large tyres as little as 2lb will make a difference.
example: JD6910, mower, wgt 1.3 ton(hay and silage contracting) on 3ph @ 18 lb pressure(rear) would get pitchforked into oncoming traffic if you hit a bump on the edge of the road. I increased the pressure to 22lb and that cured the problem. Only 4lb and major difference. I could safely travel at full speed.