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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Alton/Generator Oil Leak
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<blockquote data-quote="1660bob" data-source="post: 44766" data-attributes="member: 366"><p>I am considering this issue at present whilst building my motor.My Vin has yet to run, so i cannot claim experience, but my thoughts are thus:</p><p> The Alton, we have to assume is good to go- i.e. will not need any attention to itself for a good while (apparently not always the case!) the reason i say this is that, as i look at it, the only way to stop an oil leak here is to virtually glue the faces up real good -what else is there? Thus fitting of the unit i consider semi-permanent, and all positional adjustments must be settled before the "glueing " takes place. To this end, i managed to turn up an alloy distance collar with a superthin boss on it(and I mean thin-there is only a few thou to clear the Alton sprocket carrier ) that was a nice press fit in the end of the Alton.I glued (Wellseal)/pressed this in and can now consider it "part" of the Alton so that , as far as my bike is concerned, the axial position will always be right as soon as the faces abut when the generator is offered up. I have marked the Alton casing with two tiny centrepunch marks adjacent to the outer edge of the ET176 clamp, upon which i have scribed a reference line.The two punchmarks represent the extremeties of turning ajustment available to adjust tooth depth (there`s not much) before the Alton begins to push itself away on the crankcase "slope", (and open up the joint we are trying to seal), All this done, i now intend to use a good, flexible sealer (Threebond 1184?) but i suspect silicone will do the job a lot more cheaply, and no oilways in the primary to worry about should a bit get in). My primary has a crank seal fitted to hopefully stop it pressurising from the engine, and may be OK fully sealed (as my MK3 Commando was with no ill effect) but perhaps a small breather in the inspection cap may be wise? That`s my take on it,Bob.</p></blockquote><p></p>
[QUOTE="1660bob, post: 44766, member: 366"] I am considering this issue at present whilst building my motor.My Vin has yet to run, so i cannot claim experience, but my thoughts are thus: The Alton, we have to assume is good to go- i.e. will not need any attention to itself for a good while (apparently not always the case!) the reason i say this is that, as i look at it, the only way to stop an oil leak here is to virtually glue the faces up real good -what else is there? Thus fitting of the unit i consider semi-permanent, and all positional adjustments must be settled before the "glueing " takes place. To this end, i managed to turn up an alloy distance collar with a superthin boss on it(and I mean thin-there is only a few thou to clear the Alton sprocket carrier ) that was a nice press fit in the end of the Alton.I glued (Wellseal)/pressed this in and can now consider it "part" of the Alton so that , as far as my bike is concerned, the axial position will always be right as soon as the faces abut when the generator is offered up. I have marked the Alton casing with two tiny centrepunch marks adjacent to the outer edge of the ET176 clamp, upon which i have scribed a reference line.The two punchmarks represent the extremeties of turning ajustment available to adjust tooth depth (there`s not much) before the Alton begins to push itself away on the crankcase "slope", (and open up the joint we are trying to seal), All this done, i now intend to use a good, flexible sealer (Threebond 1184?) but i suspect silicone will do the job a lot more cheaply, and no oilways in the primary to worry about should a bit get in). My primary has a crank seal fitted to hopefully stop it pressurising from the engine, and may be OK fully sealed (as my MK3 Commando was with no ill effect) but perhaps a small breather in the inspection cap may be wise? That`s my take on it,Bob. [/QUOTE]
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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Alton/Generator Oil Leak
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