30-FV Carb. Leaking.

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baron_beeza
Posts: 12
Joined: Sat Jun 29, 2019 1:25 pm
Location: NZ

30-FV Carb. Leaking.

Post by baron_beeza » Mon Sep 09, 2019 3:32 am

30-FV Carb.

I am working on a 25 and it has a carb issue. There is a drilling from the float bowl out to the jet chamber as you would expect. The problem is that it continues beyond and as a result any fuel trying to fill the float chamber just leaks directly out. Something has to be missing. I have checked the Solex sites but didn't see any pics or schematics. Got the tractor as a non-runner and this may well be part of the problem, all else is good and actually had it running. (By modulating fuel supply).


Image

baron_beeza
Posts: 12
Joined: Sat Jun 29, 2019 1:25 pm
Location: NZ

Re: 30-FV Carb. Leaking.

Post by baron_beeza » Mon Sep 09, 2019 5:18 am

The engine was never going to run economically with the fuel path as depicted roughly here.

The previous owner must have assumed it was the float needle valve as I did notice the bottom of the float was crushed inwards.
He must have undone the drain plug and forced a screwdriver or similar up onto the float. That was not going to stop it flooding, - once he released pressure again.
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db2d
Posts: 2083
Joined: Fri Feb 24, 2012 10:01 pm
Location: Monmouthshire

Re: 30-FV Carb. Leaking.

Post by db2d » Mon Sep 09, 2019 7:19 am

The hole highlighted in the photograph should be blanked with a brass insert.

baron_beeza
Posts: 12
Joined: Sat Jun 29, 2019 1:25 pm
Location: NZ

Re: 30-FV Carb. Leaking.

Post by baron_beeza » Mon Sep 09, 2019 10:01 am

Thanks Cliff, I squeezed a blind pop rivet in and it seems to have fixed the carb issue. I will have to wait until the oil filter turns up in the morning to see how the engine runs now.
I was wondering about a brass plug as there was really no sign of anything having been there for a while.

The Cropmaster has been running fine, neither engine has signs of water dripping into the sump.
I am optimistic for the 25 running well now as it roared into life with the raw fuel dripping into the air inlet, out of that hole.

The Cropmaster is noisy in the transmission but all works ok. I will drop gearbox oil on both tractors and see how I am placed there.

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cobbadog
Posts: 588
Joined: Tue Oct 11, 2011 6:18 am
Location: beautiful Coopernook NSW. near Taree. NSW. Australia

Re: 30-FV Carb. Leaking.

Post by cobbadog » Wed Sep 11, 2019 7:01 am

The transmission do tend to growl a little but they are an extremely strong and well made box you should not be too worried. Ours growls a bit and always has done so since being in our care and have had no issues with it.
As for the carby while your waiting for the oil filter you can give it a good clean up. I found on ours that the felt seals on the main shaft were worn and air was sucking in through there and to my amazement the shaft runs on needle rollers. I made some new felt seals and this helped a lot. I also sat down and rubbed all the mating surfaces smooth and flat again to help with the carby sealing properly again. It was well worth the time spent as it ticks over nicely now.

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