Coupler

Kyle8

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I changed my coupler the other day and i was checking it today just to make sure everything was ok and noticed a crack. Im ordering a new coupler today.Everything is still working and tight . Anyone with any info or help would be much appreciated.
 

Kyle8

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20170418_142543.jpg
 

rob allen

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Could have set up in a warehouse for awhile and dry rotted. Or it's offline when you installed it.
 
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Qwikdry

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if you don't want to order one Kyle, i am up in Brigham City, Utah. their is a place in Corrine just 5-10 minutes to the west they have every coupler or belt pulley, or anything you can think of. K & K Bearing of Corrine. i saw couplers in there when i was picking up a 5.5" drive pulley for my truckmount. you will just need to know the shaft size.
 
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longkenn

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Kyle8

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if you don't want to order one Kyle, i am up in Brigham City, Utah. their is a place in Corrine just 5-10 minutes to the west they have every coupler or belt pulley, or anything you can think of. K & K Bearing of Corrine. i saw couplers in there when i was picking up a 5.5" drive pulley for my truckmount. you will just need to know the shaft size.
Thanks
 

SRD

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Kevin Dumas

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Regarding the "orange" Hytrel coupling sleeves, they will take much more torque than the "black" EPDM sleeves but the temperature limits on Hytrel is lower than the EPDM type.

I believe a lot of coupler failures on truckmounts are heat related.
Temperature limits on the black sleeves is 275 degrees and I have tested many tm's with a laser thermometer and have seen temperatures of 350-375 on the flange closest to the engine. Even higher if the exhaust is routed close to the coupler.

You also need different flanges for the Hytrel sleeve.
 
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seagrtj

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Just make sure you measure the the gaps between hubs correctly according to the coupler specs. You could be putting too much stress on it under load if the measurements are off