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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
ET26/2 Extra Long Rocker Bearing
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<blockquote data-quote="greg brillus" data-source="post: 103031" data-attributes="member: 597"><p>Hi there Steven, You will be fine with all you have, the parts will go together very nicely. Your point about heating the rocker, cooling the pin is probably not necessary given these parts are steel not alloy. I would still definitely linish a small bevel on one end of the pin, as the bevel you see is more so the pin does not rub against the side walls of the cylinder head tunnel. It is very important that you check that the pin does not protrude out one side even a small amount, as the pin will gouge its way in leaving a scar down the tunnel side wall and this will make the final fit very difficult. This extra bevel I mention is only about a mm long not much more would be unnecessary, and they can be quite a tight fit into the rocker itself. Some support the rocker bush in a custom made cradle with a hole in it for the pin to pass through, but I prefer to support the rocker itself across the top of the jaws of a good bench vice, and open the jaws just enough so the alloy bush slides between the jaws. Remember to lube all the parts with oil and the pin should tap in nicely. If you do go too far, just flip it over and tap back the other way.........</p></blockquote><p></p>
[QUOTE="greg brillus, post: 103031, member: 597"] Hi there Steven, You will be fine with all you have, the parts will go together very nicely. Your point about heating the rocker, cooling the pin is probably not necessary given these parts are steel not alloy. I would still definitely linish a small bevel on one end of the pin, as the bevel you see is more so the pin does not rub against the side walls of the cylinder head tunnel. It is very important that you check that the pin does not protrude out one side even a small amount, as the pin will gouge its way in leaving a scar down the tunnel side wall and this will make the final fit very difficult. This extra bevel I mention is only about a mm long not much more would be unnecessary, and they can be quite a tight fit into the rocker itself. Some support the rocker bush in a custom made cradle with a hole in it for the pin to pass through, but I prefer to support the rocker itself across the top of the jaws of a good bench vice, and open the jaws just enough so the alloy bush slides between the jaws. Remember to lube all the parts with oil and the pin should tap in nicely. If you do go too far, just flip it over and tap back the other way......... [/QUOTE]
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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
ET26/2 Extra Long Rocker Bearing
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