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What would be causing our Kenmore roto belt to chirp every other minute?

This is a Kenmore model #661.626920 roto-belt evaporative cooler from the late 80's. It still runs well but recently after it has ran for a while it starts to make a chirping sound about every other minute, it has been oiled near the pulley, what other things do you think it could be? Thanks

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Kenmore , Building Supplies
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Manage My Life
I have a Rotobelt that chirps too. The bearings on the spider carriage wear out causing the squirrel cage to shift back and forth. The squirrel cage rubs against the inside of the casing, on either end alternatively. This makes a horrible vibration that creates the chirping sound. The solution is to replace the spider carriage bearings.
by Manage My Life
July 10th, 2012
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Joey S
The periodic chirping is likely emitting from one of the evaporator pad (key#5) rollers (keys 15,16&17) when it rotates or the noise could be from the motor (key#6) that rotates the evaporator pad. You should be able to shut off the blower unit and leave the evaporator pad motor operating to see if it continues to make the noise. If it does make the noise the problem is with one of the rollers or the motor. If the noise does not recur after shutting the blower motor off, the noise is from the blower motor which will likely need to be replaced if there is no place to oil the motor shaft.

I recommend calling a service technician to diagnose and repair your evaporative cooler.
by Joey S Earned 1,958 community points in Kenmore
September 8th, 2009
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