Question about Mastercool 67680 Evaporative Cooler Air Conditioner

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The shaft on the master cool is moving from side to side and it vibrates. how do I stop it from moving

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You need a couple of locking collars to keep the shaft from sliding around inside the bearing mounts.
the shaft on the master cool is moving from side - 1f2558a.jpg

You'll have to take the pulley off and possibly the bearings to insert the locking collars in between key areas where the collars can keep the shaft from moving in and out. You'll need to know the size of the shat (probably 3/4") to know which collars to get. You can find them online at www.indoorcomfortsupply.com

You'll probably want some leather washers also to eliminate friction between metal parts.

Posted on Feb 14, 2010

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Posted on Jan 02, 2017

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IT sounds like it could be in the transfer box as that can give you the vibration if the bearings have a little bit of wear but still lets go to something for you to do now and that is get some small 2oz weights (square bits of metal ) and about 6 big hose clips 2" bigger than the tailshaft.Now get under the truck and fit 2 or more to the rear shaft with 1,, 2 oz plate side by side 1/2 way up, and the plates under the screw on the clips so its got the weight in 1 place , this will let you balance it your self and you keep undoing them 2turns and moving around the shaft 1/2" at a time and if better
add another clip and plate in the same place till you get the vibration out of it and when all 100% then mark the shaft where the plates are and then take off plates and hose clips and weigh them so you no what size weights to weld on and mark shaft on back axle and front flang so as you get it bolted in the same place all the way through so when new plates are welded on then all must be 100%.
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