74 T500 oil pump seals

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RossB
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Suzuki 2-Strokes: RD400 T500 Titan GT550

74 T500 oil pump seals

Post by RossB »

Hey gents read all threads on this but a I'm a little slow just got bike on road runs good
Noticed air in oil lines after my ride is that normal or is there a bad seal in the pump? I bled lines
So there was no air at all in lines tank full. Can't find rebuild kit looked everywhere any ideas?
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jabcb
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Re: 74 T500 oil pump seals

Post by jabcb »

Forum member bloop2 sells a complete oil pump kit on eBay.

Be extra careful with the oil pump priming bolt because it has left hand threads.
BAS (Bike Acquisition Syndrome) - too many bikes but have room for more

Suzuki:
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RossB
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Suzuki 2-Strokes: RD400 T500 Titan GT550

Re: 74 T500 oil pump seals

Post by RossB »

Thank you can't find Bloop2 pump seals on eBay do you have link.
karl pa
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Re: 74 T500 oil pump seals

Post by karl pa »

The T500 and GT500 have one line that splits to two lines for each cylinder.where these lines split,they can develop air leaks causing air bubbles in oil lines.
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GTandcbr
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Re: 74 T500 oil pump seals

Post by GTandcbr »

Look here viewtopic.php?f=23&t=8422" onclick="window.open(this.href);return false; send him a pm?
98 carb Blackbird and GT550j
RossB
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Suzuki 2-Strokes: RD400 T500 Titan GT550

Re: 74 T500 oil pump seals

Post by RossB »

Thanks after further inspection think air leak is coming from spilt were lines join together because one line is full the other 3 have air, going try to bond joints not many options out there. Thanks again!
RossB
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Suzuki 2-Strokes: RD400 T500 Titan GT550

Re: 74 T500 oil pump seals

Post by RossB »

I'm back! So here's were I'm at, made fixture to put a very little amount of air into lines no leaks found that 3 of the 4
check valves were not closing trying to clean them carefully. Open for ideas don't want to take them apart! (check valves)
GTandcbr
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Re: 74 T500 oil pump seals

Post by GTandcbr »

You can clean the lines and check valves with carb cleaner. Allow them to dry.To test them properly you need to fill the lines with 2T oil using a syringe or something similar. Then hang them up with the check valves downwards overnight. The lines should still be full with no bubbles in the morning. If not they are not doing the job and will allow oil to continue flowing into the crankcase after the engine is stopped. Not good! The check valves can be serviced by removing them but unless you know what you are doing its very difficult. New valves can be bought but there are mixed views on whether they work or not and they are expensive. If yours leak i would try to source another set. Good luck
98 carb Blackbird and GT550j
RossB
On the main road
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Joined: Wed Jun 08, 2016 12:54 pm
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Suzuki 2-Strokes: RD400 T500 Titan GT550

Re: 74 T500 oil pump seals

Post by RossB »

Thanks think I'm all set there hanging right now, looks good so far. hate to take them a part there super clean.
Thanks
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