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oil pump leaking ??

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Johnwebley:
I have a CB500-4,

 1974 M plate,

 recently its been dripping oil,and when I removed the gearbox sprocket cover,I noticed the section that covers
the oil pump,was lots of loose oil about,

 I had a look around,its very clean,no obvious leak,
 looking in the manual,I see a large O ring,and several smaller O rings at the mounting bolts,also the pressure-relief
cap,

any ideas?

Bryanj:
Its normally the outer cover  "O" ring which is not in the parts list but a 46 x 2 O ring fits, you can order it from Honda as a Goldwing part and the number is posted on here somewhere

matthewmosse:
I have had a couple leak from the oil pressure switch over the years.

totty:
There a few seals under that cover that could leak oil, it would make sense to clean it and see where it leaks when you next run it. My money is on the gear selector shaft seal.

Johnwebley:

--- Quote from: totty on February 08, 2014, 08:14:46 PM ---There a few seals under that cover that could leak oil, it would make sense to clean it and see where it leaks when you next run it. My money is on the gear selector shaft seal.

--- End quote ---


  the oil only collects in the pump section,I will ask my local guys if they have loose seals,if not,I guess
its try and find the Honda ones,

if I remove the pump,I will need

 2x 14 X ? on the mounting screws,
 1 x 47 x 2 pump to crankcase joint
 1 x 46 x 2 for end cover,
and maybe the 19 x 2 pressure relief cap

I have looked online for oil rings,seems if you know the size,
they can be had,very reasonably as well,
btw,what do think the max temperature around the pump ?

thanks all

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