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Bush version of outrigger bearing removal tool https://ausmini.com/forums/viewtopic.php?f=25&t=84890 |
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Author: | drmini in aust [ Thu Mar 13, 2014 12:01 pm ] |
Post subject: | Bush version of outrigger bearing removal tool |
I decided to make this tool so I could remove the outrigger bearing outer ring from the flywheel housing without destroying it by welding etc. NOTE: Dimensions shown suit the A series 4 synchro flywheel housing, with the LATEST size RHP bearing outer ring, (34mm bore). Earlier bearings (now NLA) were smaller ID (33.37mm bore). --------- --------- Note the bearing ring is shown there after extraction. --------- Note the O-ring is just to keep collets together after use. Sorry no can do a CAD drawing, but here are the machining details: Material- 1045 or better. Turn collets in 1 piece, body diameter 34.0mm x 13mm long. Shoulder turn 36mm diameter x 2.2mm long. Drill & tap right through, M12 x 1.75 Split in two, with a 5mm gap. I used a 5mm slot drill in the mill. Mill 2 lugs 7mm wide on the flange. Cut away the rest of the flange, I used the bench grinder. Put a 2.5mm x 45deg chamfer all round, between the 2 lugs. I used the bench grinder. (it's only for clearance) To use, drop the collets into the bearing, check they are level with each other and the 2 lugs are in the slots, and screw the stud right in. Then drop a Mini drive yoke over it, fit washer and tighten nut. You could make up an outer body instead, but this works fine. I warm the alloy housing to ~200C with a hot air gun to reduce drag, but these rings are not fitted real tight. [edit] typo [edit 2]- This tool MUST be hardened, I bent the 2 lugs off mine this week. The bearing ring was very tight due to previous case butchery at the circlip. |
Author: | Mick [ Fri Mar 14, 2014 6:10 pm ] |
Post subject: | Re: Bush version of outrigger bearing removal tool |
Again, thanks to Kevin for this much easier method of removing the outrigger. My second most disliked job next to the idler gear needle roller... Mick |
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