My Mark five developed a loud screeching noise. I have found the issue or at least think I have. After getting the motor on the table. I removed the nut and spring and cleaned the shaft. Replacing the counter clockwise nut, the question came to mind, What holds the nut in place. I have read the forum enough to learn on some models there is a snap ring. Mine does not have a snap ring or a slot to put one in. What does hold the nut in place?
Learned alot just reading the maintenance section of the forum.
Thanks for any help.
Steve
Sheave spring nut and washer
Moderator: admin
follow up to sheave and nut ?
The nut was finger loose when I disassembled the unit.
Thanks
Thanks
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JPG
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- Location: Lexington, Ky (TAMECAT territory)
The left hand threads prevents the normal loads from loosening the nut.
However the spring is what is trying to move the nut. It does not apply much torque to the nut.
The sheave is keyed, so it should not be torqueing the other end of the spring.
If the sheave was not sliding easily on the shaft, it probably was causing the belt to slip/squeal.
The floating sheave is what maintains belt tension.
However the spring is what is trying to move the nut. It does not apply much torque to the nut.
The sheave is keyed, so it should not be torqueing the other end of the spring.
If the sheave was not sliding easily on the shaft, it probably was causing the belt to slip/squeal.
The floating sheave is what maintains belt tension.
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╟JPG ╢
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Goldie(Bought New SN 377425)/4" jointer/6" beltsander/12" planer/stripsander/bandsaw/powerstation /Scroll saw/Jig saw /Craftsman 10" ras/Craftsman 6" thicknessplaner/ Dayton10"tablesaw(restoredfromneighborstrashpile)/ Mark VII restoration in 'progress'/ 10E[/size](SN E3779) restoration in progress, a 510 on the back burner and a growing pile of items to be eventually returned to useful life. - aka Red Grange
╟JPG ╢
╚═══╝
Goldie(Bought New SN 377425)/4" jointer/6" beltsander/12" planer/stripsander/bandsaw/powerstation /Scroll saw/Jig saw /Craftsman 10" ras/Craftsman 6" thicknessplaner/ Dayton10"tablesaw(restoredfromneighborstrashpile)/ Mark VII restoration in 'progress'/ 10E[/size](SN E3779) restoration in progress, a 510 on the back burner and a growing pile of items to be eventually returned to useful life. - aka Red Grange
steve54 wrote:My Mark five developed a loud screeching noise.
Steve
That screeching can also be caused by letting the motor sheave snap back, which reduces the needed space to keep it from rubbing on the housing.
SS 500(09/1980), DC3300, jointer, bandsaw, belt sander, Strip Sander, drum sanders,molder, dado, biscuit joiner, universal lathe tool rest, Oneway talon chuck, router bits & chucks and a De Walt 735 planer,a #5,#6, block planes. ALL in a 100 square foot shop.
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Bob
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Bob
steve54 wrote:One final question, should I be able to compress the motor spring enough by hand to re-install the nut? I am just able to this by setting the motor on end and using the sheave plate to rotate the shaft?
Thanks again
NO!!! Use the board and a dowel rod to reinstall the the spring and nut. Here's a PDF that may help, starting at number 8 and the spring board description at the top of the page.
[ATTACH]17740[/ATTACH]
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replacing the motor spring.PDF- (292.02 KiB) Downloaded 273 times
SS 500(09/1980), DC3300, jointer, bandsaw, belt sander, Strip Sander, drum sanders,molder, dado, biscuit joiner, universal lathe tool rest, Oneway talon chuck, router bits & chucks and a De Walt 735 planer,a #5,#6, block planes. ALL in a 100 square foot shop.
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Bob
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Bob