T500 / T350 Oil Pump Seal Kit

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jabcb
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Re: T500 / T350 Oil Pump Seal Kit

Post by jabcb »

oldjapanesebikes wrote:
dgoodsy wrote:Does anyone know if there is a similar kit available for the gt750 (j) oil pump?
What exactly do you need for the GT750 pump ? 8)
For the GT380/GT550/GT750 pumps:
The oil seal at the bottom of the pump is available from Suzuki.
The oddly-shaped top gasket is available from the UK eBay seller, astraxuk. I think its also available from the German seller that you have to contact via email.

For the control arm shaft seal in both types of pumps:
Bloop2’s pic for the T-series kit doesn’t show the seal, but I think his kit now includes that o-ring.
The GT380/GT550/GT750 pumps has the seal, but I have no info on it.
BAS (Bike Acquisition Syndrome) - too many bikes but have room for more

Suzuki:
GT750 2x75
GT550 72 project & 75
GT380 72
T500 69 project & 73 project
T350 69 & 71
Honda 85 CB650SC & 86 CB700SC
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oldjapanesebikes
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Re: T500 / T350 Oil Pump Seal Kit

Post by oldjapanesebikes »

jabcb wrote:The oil seal at the bottom of the pump is available from Suzuki. The oddly-shaped top gasket is available from the UK eBay seller, astraxuk. I think its also available from the German seller that you have to contact via email..................Bloop2’s pic for the T-series kit doesn’t show the seal, but I think his kit now includes that o-ring.
I was actually waiting till the fellow asking the question had clarified what he or she thought they needed, however:
  • - the oil seal is available from anywhere - its just a standard seal so all you need to do is match the size
  • - the fellow in Germany is Reiner - just email him for a price list, and his contact info is found on this link, along with contact info for other suppliers I have dealt with
  • - that shaft seal is not an o-ring - it is a u-seal and finding a good replacement is proving problematic
8)
Ian

If at first you don't succeed, just get a bigger hammer !
dgoodsy
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Re: T500 / T350 Oil Pump Seal Kit

Post by dgoodsy »

oldjapanesebikes wrote:
dgoodsy wrote:Does anyone know if there is a similar kit available for the gt750 (j) oil pump?
What exactly do you need for the GT750 pump ? 8)
I don't even know exactly to be honest. I had the pump out and rigged up away to spin the pump and watch the output, when I moved the pump lever to the full throttle position 4 ports remained outputting next to nothing while 2 of the ports started pushing much more oil through. I guess that's indicative of a sticking piston, but I don't trust the seals which may have been dry for a number of years. I figure if a seal kit is reasonably priced I may as well replace them.


Thanks for the leads on the parts guys, I will be looking into them!
'72 GT750
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oldjapanesebikes
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Re: T500 / T350 Oil Pump Seal Kit

Post by oldjapanesebikes »

dgoodsy wrote:........when I moved the pump lever to the full throttle position 4 ports remained outputting next to nothing while 2 of the ports started pushing much more oil through. I guess that's indicative of a sticking piston, but I don't trust the seals which may have been dry for a number of years. !
Could be a sticking piston. Take a read through the pump section in the GT750 Shop Manual as there is some good information there. I have a copy on line at this link if you don't have one. As well Richard has done a great write-up on the pump operation which you can fine on his own site (here), and which is also cross posted on mine (here).

Hope that helps. 8)
Ian

If at first you don't succeed, just get a bigger hammer !
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jabcb
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Re: T500 / T350 Oil Pump Seal Kit

Post by jabcb »

One more useful link…

The PO had taken the pump actuator arm off of the pump on one of my GT750s. He then installed it 180 degrees out.
I had a spare pump & came up with a way to figure out how to properly orient the actuator arm.
See: viewtopic.php?f=2&t=11662&p=155174&hili ... mp#p155174
BAS (Bike Acquisition Syndrome) - too many bikes but have room for more

Suzuki:
GT750 2x75
GT550 72 project & 75
GT380 72
T500 69 project & 73 project
T350 69 & 71
Honda 85 CB650SC & 86 CB700SC
09 Triumph Bonneville SE
dgoodsy
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Re: T500 / T350 Oil Pump Seal Kit

Post by dgoodsy »

Thanks a lot guys. I have skimmed through most of those links but with me not really being familiar with the pumps lots of it went over my head. I will have them handy when I am ready to check the pump again and have it in front of me.
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PippiFyrecracker
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Re: T500 / T350 Oil Pump Seal Kit

Post by PippiFyrecracker »

Hey! Does anyone one on here still have freds contact info? I want to buy one of those kits and I just realised we both live in the province!!! :D
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jabcb
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Re: T500 / T350 Oil Pump Seal Kit

Post by jabcb »

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

Suzuki:
GT750 2x75
GT550 72 project & 75
GT380 72
T500 69 project & 73 project
T350 69 & 71
Honda 85 CB650SC & 86 CB700SC
09 Triumph Bonneville SE
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smokin_blue
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Re: T500 / T350 Oil Pump Seal Kit

Post by smokin_blue »

For those who have rebuilt the T500 pumps are there any critical points or things to know (whether it be pulling, rebuilding, or reinstall) before I pull the pump and replace the seals?

thanks!
'07 Suzuki SV650
'90 GSX-R1100 streetfighter
LS650 powered custom framed café
'72 T500 with a Lyster frame
'69 T500-parts/project?
'83 GR650-project

Past bikes
'06 Triumph Sprint ST
'86 GSX-R750
'74 GT250/T350 custom
'79 GS750
'74 TS250
'81 TS100
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jabcb
Moto GP
Posts: 3763
Joined: Mon Dec 13, 2010 4:32 pm
Country: USA
Suzuki 2-Strokes: 69 T350 thru 75 GT750
Location: southwestern Pennsylvania

Re: T500 / T350 Oil Pump Seal Kit

Post by jabcb »

The small bolt used to prime the pump has left hand threads.

Beyond that, its a pretty simple & reliable design.
BAS (Bike Acquisition Syndrome) - too many bikes but have room for more

Suzuki:
GT750 2x75
GT550 72 project & 75
GT380 72
T500 69 project & 73 project
T350 69 & 71
Honda 85 CB650SC & 86 CB700SC
09 Triumph Bonneville SE
User avatar
smokin_blue
On the main road
Posts: 130
Joined: Fri Nov 01, 2013 8:30 pm
Country: usa
Suzuki 2-Strokes: www.street-unique.com
Location: Minnesota
Contact:

Re: T500 / T350 Oil Pump Seal Kit

Post by smokin_blue »

Great! thanks!
'07 Suzuki SV650
'90 GSX-R1100 streetfighter
LS650 powered custom framed café
'72 T500 with a Lyster frame
'69 T500-parts/project?
'83 GR650-project

Past bikes
'06 Triumph Sprint ST
'86 GSX-R750
'74 GT250/T350 custom
'79 GS750
'74 TS250
'81 TS100
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