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Evaluating an A7/A10 oil pump #781204 08/11/19 7:50 pm
Joined: Nov 2009
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bon Offline OP
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Trying to finally get my A10 going, all back together and on the road. One thing has me concerned, is the oil pump. Is there anyway to test or inspect the pump while off the bike ? I don't want to mount the pump and then realise the pump is knackered, maybe wrecking the crankshaft.

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Re: Evaluating an A7/A10 oil pump [Re: bon] #781326 08/13/19 12:16 am
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NickL Offline
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Fill it with oil, put your thumb over the output side and turn the pump with your other hand, if it leaks at the joints,
then you will need to strip it and spend time facing the body and end plate. Most people don't bother and just buy
a new one. It's not a five minute job to recondition one. The pump should be reasonably free to turn and the gears
should be level with the ends of the body section for best performance. Time and patience lapping the faces square
is what makes for a good pump. If there has been crap in it the gears may have worn but normally they are ok
providing the body (mainly on the delivery side) is not badly scored.
Turning the pump with the outlets blocked as i say will show any pressure leaks, once that's ok check the face
for flatness and all will be good.
This is of course only my opinion, but i have never had one of these a65 or a10 pumps that couldn't be put back
into good working order. Just time and patience....................

Re: Evaluating an A7/A10 oil pump [Re: bon] #781328 08/13/19 12:55 am
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bon Offline OP
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Thanks NickL.


Moderated by  Allan Gill, Jon W. Whitley 

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