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Bearing Plate Bolts
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Bearing Plate Bolts
I stripped down the rear pinion gear cover of the shaft drive tonight to see what the grease was like.
Unfortunately, I snapped off one of the six bearing plate bolts. Annoyingly, part of the bolt is no stuck in the thread! I guess I will have to try and drill it out.
What type of bolt do I need to replace it? I know the top is 10mm.
Many thanks for any help.
Unfortunately, I snapped off one of the six bearing plate bolts. Annoyingly, part of the bolt is no stuck in the thread! I guess I will have to try and drill it out.
What type of bolt do I need to replace it? I know the top is 10mm.
Many thanks for any help.
fender- Posts : 52
Join date : 2013-09-26
Re: Bearing Plate Bolts
The bolts are M6 x 15mm with a built in washer. I would recommend replacing these with good quality high tensile or stainless steel ones with a separate washer. The Yamaha ones are low quality steel thus why one sheared off.
Be careful when drilling out broken one, dont use too big a drill and it may be worth buying a screw extractor which has a spiral thread that grips the screw. You may be able to remove it by tapping the square tang of a file into the hole, plenty of easing fluid & maybe a bit of heat to expand the alloy. Do not try to fully drill out the screw as you will inevitably damage the thread in alloy casting.
Be careful when drilling out broken one, dont use too big a drill and it may be worth buying a screw extractor which has a spiral thread that grips the screw. You may be able to remove it by tapping the square tang of a file into the hole, plenty of easing fluid & maybe a bit of heat to expand the alloy. Do not try to fully drill out the screw as you will inevitably damage the thread in alloy casting.
JohnW- Posts : 1384
Join date : 2011-10-29
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