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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Twin oil pump fitting
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<blockquote data-quote="greg brillus" data-source="post: 112896" data-attributes="member: 597"><p>One issue you can have when passing a 1" ream up the bore if the mains are in, the reamer can hit the edge of the outer race, and this will blunt the reamer. I've had to get up the bore with a small grinding stone and take a whisker off the bearing race..........All a complete bugger, and hindsight is a great thing after the fact. Once the hole is true and round with no burs, the sleeve should push in with the cases cold. I use a good coating of that brown loctite number 3 which is a non hardening sealant ideal for oil pump and water pump installations. I have found if the sleeve is very tight to withdraw, you are better off to use some threaded rod and make a puller that winds the sleeve out, as a slide hammer is too brutal, you can literally pull the thread out of the far end of the pump, it is only a threaded alloy plug after all. If your plunger will not easily fit to the new sleeve, then you have likely bent the sleeve. Any drastic changes to the bore of the sleeve and/or the plunger will likely result in the engine wet sumping. I have seen it done by a so called expert with the end result being that the bike would loose the entire contents of the oil tank into the crankcases in less than a week. We had to completely strip the engine and start again.........This was because the pump bore in the cases was undersized about 0.002" this on a new set of cases. Not fun to fix at all........... Good luck with it.</p></blockquote><p></p>
[QUOTE="greg brillus, post: 112896, member: 597"] One issue you can have when passing a 1" ream up the bore if the mains are in, the reamer can hit the edge of the outer race, and this will blunt the reamer. I've had to get up the bore with a small grinding stone and take a whisker off the bearing race..........All a complete bugger, and hindsight is a great thing after the fact. Once the hole is true and round with no burs, the sleeve should push in with the cases cold. I use a good coating of that brown loctite number 3 which is a non hardening sealant ideal for oil pump and water pump installations. I have found if the sleeve is very tight to withdraw, you are better off to use some threaded rod and make a puller that winds the sleeve out, as a slide hammer is too brutal, you can literally pull the thread out of the far end of the pump, it is only a threaded alloy plug after all. If your plunger will not easily fit to the new sleeve, then you have likely bent the sleeve. Any drastic changes to the bore of the sleeve and/or the plunger will likely result in the engine wet sumping. I have seen it done by a so called expert with the end result being that the bike would loose the entire contents of the oil tank into the crankcases in less than a week. We had to completely strip the engine and start again.........This was because the pump bore in the cases was undersized about 0.002" this on a new set of cases. Not fun to fix at all........... Good luck with it. [/QUOTE]
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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Twin oil pump fitting
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