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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Oil Pump
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<blockquote data-quote="Cyborg" data-source="post: 122630" data-attributes="member: 3426"><p>I purchased 2 oil pumps recently. On one it was almost impossible to turn the pump by hand and the other turned “quite freely”. I haven’t measured them, but certainly a difference in clearance.</p><p>Prior to removing a pump sleeve, it would be worth checking to see if the outer race of the small roller has walked inward. I’ver never tried it, but thinking that with the inner race removed, you could sneak in there with a puller and pull the outer race home and out of the way (assisted with some heat). Looking at my supply of knackered oil pump sleeves tells me it’s fairly common for the race to move inward. If it is in the way, the reamer isn’t going to like that, nor will the new pump sleeve. The new pumps have an aluminum end cap instead of the original style bronze ones, so may not take the same amount of abuse during removal. Thinking it would be good to check the outer race before the pump housing is removed and better to use a puller than a slide hammer so the threaded rod doesn’t rip out of the pump housing.</p></blockquote><p></p>
[QUOTE="Cyborg, post: 122630, member: 3426"] I purchased 2 oil pumps recently. On one it was almost impossible to turn the pump by hand and the other turned “quite freely”. I haven’t measured them, but certainly a difference in clearance. Prior to removing a pump sleeve, it would be worth checking to see if the outer race of the small roller has walked inward. I’ver never tried it, but thinking that with the inner race removed, you could sneak in there with a puller and pull the outer race home and out of the way (assisted with some heat). Looking at my supply of knackered oil pump sleeves tells me it’s fairly common for the race to move inward. If it is in the way, the reamer isn’t going to like that, nor will the new pump sleeve. The new pumps have an aluminum end cap instead of the original style bronze ones, so may not take the same amount of abuse during removal. Thinking it would be good to check the outer race before the pump housing is removed and better to use a puller than a slide hammer so the threaded rod doesn’t rip out of the pump housing. [/QUOTE]
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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Oil Pump
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