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 Post subject: 74 T500 oil pump seals
PostPosted: Sat Aug 13, 2016 4:23 pm 
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On the main road

Joined: Wed Jun 08, 2016 12:54 pm
Posts: 129
Country: United States
Bikes owned: RD400 T500 Titan GT550
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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PostPosted: Sat Aug 13, 2016 5:00 pm 
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Moto GP
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Joined: Mon Dec 13, 2010 4:32 pm
Posts: 3145
Location: southwestern Pennsylvania
Country: USA
Bikes owned: 69 T350 thru 75 GT750
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.

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BAS (Bike Acquisition Syndrome) - too many bikes but have room for more

Suzuki:
GT750 2x75
GT550 72 project & 75
GT380 72
T500 73 project
T350 69, 71 & 72 project
T250 72
Honda 85 CB650SC & 86 CB700SC
Yamaha 75 XS650
09 Triumph Bonneville SE


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PostPosted: Sat Aug 13, 2016 5:41 pm 
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On the main road

Joined: Wed Jun 08, 2016 12:54 pm
Posts: 129
Country: United States
Bikes owned: RD400 T500 Titan GT550
Thank you can't find Bloop2 pump seals on eBay do you have link.


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PostPosted: Sat Aug 13, 2016 6:48 pm 
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Joined: Sat Sep 05, 2015 3:14 pm
Posts: 100
Location: southeast pa
Country: us
Bikes owned: GT
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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76 GT185
77 GT250
77 GT380
76 GT500
73 GT550
73 GT750
74 GT750
71 T250 scrambler
75 T500 cafe


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PostPosted: Sun Aug 14, 2016 1:05 am 
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To the on ramp

Joined: Tue Mar 10, 2015 12:35 pm
Posts: 349
Location: Wales
Country: WALES
Bikes owned: suzuki gt 550j
Look here viewtopic.php?f=23&t=8422 send him a pm?

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98 carb Blackbird and GT550j


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PostPosted: Sun Aug 14, 2016 6:27 am 
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On the main road

Joined: Wed Jun 08, 2016 12:54 pm
Posts: 129
Country: United States
Bikes owned: RD400 T500 Titan GT550
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!


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PostPosted: Mon Aug 15, 2016 9:12 am 
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On the main road

Joined: Wed Jun 08, 2016 12:54 pm
Posts: 129
Country: United States
Bikes owned: RD400 T500 Titan GT550
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)


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PostPosted: Mon Aug 15, 2016 9:34 am 
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To the on ramp

Joined: Tue Mar 10, 2015 12:35 pm
Posts: 349
Location: Wales
Country: WALES
Bikes owned: suzuki gt 550j
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

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98 carb Blackbird and GT550j


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PostPosted: Mon Aug 15, 2016 12:18 pm 
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On the main road

Joined: Wed Jun 08, 2016 12:54 pm
Posts: 129
Country: United States
Bikes owned: RD400 T500 Titan GT550
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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