carb needles & seats 750

Thanks but on the Del Lorto VHB 30 A Squareslide there is no fitting for a socket. I don't see anywhere to fit a small socket. Its a rounded brass tube. Just looked under the top Squareslide. Nothing for a socket. The other thing I had my tank redone on the inside.
They used Red Coat Sealant. Would the Redcoat breaking down in the fuel cause needles to stick?
 
Looking at my Green Book there,s a diagram showing an entire VHB carb disassembled along w info on doing so.
If you see red flakes in the fuel filter or carb bowl, you’ll need to take the carb apart and clean/ inspect all the parts and passageways, best in an ultrasonic cleaner.
There are Del Orto complete rebuild kits and instructions available from Bevel Heaven in CA and Steve Allen is a carb expert.
 
Evan said:
Thanks but on the Del Lorto VHB 30 A Squareslide there is no fitting for a socket. I don't see anywhere to fit a small socket. Its a rounded brass tube. Just looked under the top Squareslide. Nothing for a socket. The other thing I had my tank redone on the inside.
They used Red Coat Sealant. Would the Redcoat breaking down in the fuel cause needles to stick?
Click to expand...
You should be able to put a spanner or socket if you must on the float valve seat of a VHBA.
Coating the inside of fuel tanks with anything else than a phosphate solution isn't recommended.
Paul
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It is plain to see these needle seats do not have a hex fitting for removal. I have 4 30A VHBs. All have the same brass seat w/out a hex fitting. So a stud wrench to remove? & then it was 4 yrs ago that I had the tank redone & they used the Redcoat on the inside. Old 15538 ran beautifully up to a yr ago when one carb started to leak! So I replaced the leaking one & then the other side leaked. Then I get too busy in the summer to do anything.
I believe the Redcoat is causing the needles to stick. I have access to a sand blast. But you take all the brass ports out prior...
Haven't ridden in a year! Haven't even got the engine back on 8787 yet.
 

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Well, at least the VHBs as used by Laverda have cast-in/pressed-in float valve seats. I'm guessing the pic that Paul has posted is of a Guzzi version as there is no thread visible where the main jet holder would go in. The Guzzi types have a completely different main jet and atomiser set-up which also houses the accelerator pump.

piet
 
sfcpiet said:
Well, at least the VHBs as used by Laverda have cast-in/pressed-in float valve seats. I'm guessing the pic that Paul has posted is of a Guzzi version as there is no thread visible where the main jet holder would go in. The Guzzi types have a completely different main jet and atomiser set-up which also houses the accelerator pump.

piet
Click to expand...
Mea culpa.
I've looked at other VHBs and the seat is a press fit.
Paul
 
Ok I have to re do the tank. Again! New hoses & petcocks. Had no idea Redcoat would do this. Says on Google it will cause needles to stick when it breaks down. I will talk to that radiator place & tell them what happened. Red Coat is not good on Carbs. Decades ago I did coat my other tank w/ Eastwood Tank Sealant. Not Red Coat. My Gt ran for decades w/ this sealant. Never had this problem.
So after tank would the petcocks have to be replaced? & then Ultrasonic clean the carbs... & anything else I need to know I would appreciate it. The radiator place did pressure test the tank. I'm hoping I don't need any sealant.
 
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