Check the motor s fan belt tension.
Swamp cooler belt tension.
This belt can become loose if it becomes worn and stretches out over time or if the motor slips in its sliding mount.
Install new cooler pads.
So while your cooler will run you ll have to.
Most motors on swamp coolers have an automatic reset thermal overload.
Will too much belt tension on a swamp cooler cause the motor to burn out.
Once inside check the tension of the belt running from the swamp cooler motor to the fan.
A common problem is the fan belt that runs from the fan motor to the fan blade axle.
When pressed it should move about one half inch.
Incorrect fan belt tension could cause your swamp cooler motor to overheat.
Lightly oil the bearing on the blower assembly and the motor if it has an oil receptacle.
The tightening of the belt is a straightforward and simple operation.
It should not be too tight or too loose.