In article ,
Jim Elbrecht wrote:

I've got an old-ish [10yrs?] treadmill that I stuck in the outdoor
gazebo for my morning walk when it rains or whatever.

Lately it started slipping a bit every so often. So I pull it
apart & it looks like it is slipping where the drive pulley is pressed
onto the 1 1/4" or so shaft that the walking belt rides on.

Did it get cold enough for the metal shaft to shrink more than the
plastic pulley?

Do you think Loctite make a product that will make it grip, or is
there a better product out there.

I've got nothing to lose-- this thing is long past paid for. I'm
just trying to keep from tossing this one and picking up another.

Jim

I think I'd try removing the shaft pulley/assembly, then separating the
pulley from the shaft.

Then I'd roughen up & clean the area on the shaft where the pulley sits,
and clean the pulley bore; then apply a thin coat of JB weld to both the
shaft end and bore, replace the pulley back on the shaft clean up any
squeeze-out, and set aside to cure overnight.

If the pulley is really a tight fit, you might need to figure a way to
provide a dash of clearance for the JB Weld... your on your own there.

Good Luck!

Erik

PS, maybe 'spot' check a little JB Weld somewhere on the plastic pulley
first to be sure nothing funny happens... E