Control Sheave Button Bearing

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br549
Platinum Member
Posts: 657
Joined: Sun Nov 30, 2014 8:51 am
Location: Midway between Houston/Galveston, TX

Re: Control Sheave Button Bearing

Post by br549 »

Right! I guess I was thinking that the speed control dial usually turns much easier when increasing speed, but you're correct, that is when the porkchop would actually be pulling on the loop and therefore the bearing. The spring at the floating sheave at the motor is being allowed to expand, and if that is well oiled, then it slides easily and therefore less pulling is required on the control sheave to get it to open.

I worked up the courage to try putting the bearing in. Went and got a 7/8" deep well socket, drilled a 1-1/8" hole in a 2x4 to set it part way in to hold it perpendicular to the 2x4. Smoothed down a 5/8" wood dowel and used it in conjunction with small faceplate and a washer to provide bearing surface when put in woodworking vice to squeeze the "snount" tight around bearing. Tested it dry first, and it seemed to tighten up fit a little, so I went for it.
Attachments
small faceplate, washer & 5/8" dowel
small faceplate, washer & 5/8" dowel
PB161233.JPG (206.27 KiB) Viewed 3056 times
washer keeps sheave vanes from hitting faceplate
washer keeps sheave vanes from hitting faceplate
PB161235.JPG (174.03 KiB) Viewed 3056 times
7/8" deep well 6 point socket, set 1/2" into 2x4. Deep well allows retaining loop and roll pin to remain installed thru hole in button while squeezing it all together
7/8" deep well 6 point socket, set 1/2" into 2x4. Deep well allows retaining loop and roll pin to remain installed thru hole in button while squeezing it all together
PB161237.JPG (181.11 KiB) Viewed 3056 times
small amount of JBWeld inside snout
small amount of JBWeld inside snout
PB161239.JPG (219.69 KiB) Viewed 3056 times
small amount of JBWeld on outside edge of bearing
small amount of JBWeld on outside edge of bearing
PB161240.JPG (184.34 KiB) Viewed 3056 times
bearing placed in snout, not much JBWeld squeeze out
bearing placed in snout, not much JBWeld squeeze out
PB161242.JPG (197.17 KiB) Viewed 3056 times
squeeze some, squeeze some more, but not too much
squeeze some, squeeze some more, but not too much
PB161244.JPG (199.1 KiB) Viewed 3056 times
after squeezing all that I dared
after squeezing all that I dared
PB161247.JPG (181.89 KiB) Viewed 3056 times
after sqeezing
after sqeezing
PB161248.JPG (186.39 KiB) Viewed 3056 times
not too much squeeze out on back side of bearing. Now leave it alone for 24 hours.
not too much squeeze out on back side of bearing. Now leave it alone for 24 hours.
PB161255.JPG (160.79 KiB) Viewed 3056 times
br549
Platinum Member
Posts: 657
Joined: Sun Nov 30, 2014 8:51 am
Location: Midway between Houston/Galveston, TX

Re: Control Sheave Button Bearing

Post by br549 »

Well, bearing seemed to be firmly in place after 24 hours when I tried to pull it out using hand force only, so I re-assembled everything (with no parts left over) and it now runs and sounds smoother and quieter than I remember.

Many thanks to all who offered advice and suggestions. Hopefully this repair will keep me going for many years to come.
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