drive wheels lock on 2630 in cold weather

[Jim Stordahl]

During cold winter weather, one of the
rear wheels on my JD 2630 will lock up as if I
stepped on the brakes. It happens to one side or
the other, but not both at the same time. It only
happens during cold northern Minnesota weather -
20"s or below. The tractor is parked inside an
unheated, but insulated garage. When I back it
out, it"s fine, but after I drive for five minutes
or so (to move snow, etc) one of the rear wheels
will "lock up". After letting it sit for a while,
I"m able to nurse it back to the garage. If I run
the garage heater and warm it up before using it,
it does not happen. When it does lock up, I cannot
move the brake pedal, it seems to have pressure
pushing it into the "off" position. Any clues?

Thanks

Jim
 

[Tx Jim]

Any chance there's moisture in the hyd oil? Have you ever checked hyd filler cap breather to be sure it's free of dirt?
 

[bmiller36]

change your hdy oil,your problem will be over. Bob
 

[jjtractors]

I had a 2630 that did the same thing, changed the oil, still did it, sold the tractor and about a year ago I read on a site that the brakes have a pocket that will hold a small amount of water and freeze, they said to drain the brake valve in question, wish I had known that before I sold it, the local Deere dealer did not know anything about such a thing. Hope this helps you!!
 

[Jim Stordahl]

Thank you all, for such great suggestions! I will
follow your advice and see what happens.

Thank you!

Jim