Mark VII Idler Shaft Issue.PNG (47.46 KiB) Viewed 7508 times
I am having a problem with my Mark VII idler shaft moving in and out of the idler shaft sheave. The idler sheave on the Mark 5/V has a retaining clip that holds the sheave on the shaft. This Mark VII does not. The set screw holding the bearings inside the idler shaft is tight. I thought about machining the shaft to accept a retaining clip or adding a set screw on the poly v side of the sheave. Anyone already have an alternate work around or had the same issue.
IMG_0333 resized.jpg (84.6 KiB) Viewed 7508 times
IMG_0333 resized.jpg (84.6 KiB) Viewed 7508 times
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Mark 7 Power Pro, Mark V 510, Mark VII (early 1960s) Headstock wall mount drill press on Mark 5 way tubes, Mark 5 Shorty with reversible motor, Overhead Pin Router, Power station with band saw, Jointers, Belt Sanders, Strip Sander, Scroll saw, Jigsaw, Shopsmith Lathe Duplicator, Craftsman 2.5 hp 13" Planer/molder, Craftsman 5 hp 12-inch planer molder, myriad Shopsmith accessories, Harbor Freight sawmill with extensions to cut 22' logs.
M VII IDLER SHAFT BEARING RETAINER.jpg (270.35 KiB) Viewed 7469 times
The setscrew only secures the bearing SPACER.
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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
I was sure you would have the solution. I’ll try to get it done soon. Thanks Roger
Mark 7 Power Pro, Mark V 510, Mark VII (early 1960s) Headstock wall mount drill press on Mark 5 way tubes, Mark 5 Shorty with reversible motor, Overhead Pin Router, Power station with band saw, Jointers, Belt Sanders, Strip Sander, Scroll saw, Jigsaw, Shopsmith Lathe Duplicator, Craftsman 2.5 hp 13" Planer/molder, Craftsman 5 hp 12-inch planer molder, myriad Shopsmith accessories, Harbor Freight sawmill with extensions to cut 22' logs.
Replacing the clip on the idler shaft turned out to be a much easier job than I anticipated. After loosening the belts, removing the retaining screw, and the nut and washer from the idler shaft I was able to lift the bearing block out exposing the shaft.
Where the clip is to be installed on the idler shaft.
IMG_0339.JPG (104.07 KiB) Viewed 7412 times
Several years ago I picked up a beater Mark VII for the motor. I tore that idler shaft apart before my initial post but couldn't tell there had ever been a slot for the clip hence the original question.
Someone worked this Mark VII until it couldn't give anymore.
IMG_0343.JPG (224.51 KiB) Viewed 7412 times
Thanks again JPG for the help.
Mark 7 Power Pro, Mark V 510, Mark VII (early 1960s) Headstock wall mount drill press on Mark 5 way tubes, Mark 5 Shorty with reversible motor, Overhead Pin Router, Power station with band saw, Jointers, Belt Sanders, Strip Sander, Scroll saw, Jigsaw, Shopsmith Lathe Duplicator, Craftsman 2.5 hp 13" Planer/molder, Craftsman 5 hp 12-inch planer molder, myriad Shopsmith accessories, Harbor Freight sawmill with extensions to cut 22' logs.
redleg wrote:Replacing the clip on the idler shaft turned out to be a much easier job than I anticipated. After loosening the belts, removing the retaining screw, and the nut and washer from the idler shaft I was able to lift the bearing block out exposing the shaft.
$matches[2]
Several years ago I picked up a beater Mark VII for the motor. I tore that idler shaft apart before my initial post but couldn't tell there had ever been a slot for the clip hence the original question.
IMG_0343.JPG
Thanks again JPG for the help.
Ah yes. I also have one of those boogered shafts. Bought it hoping to get a backup. Buyer beware!!!
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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