Banjo Bolt Size?

duncwarw

Member
I did a head gasket today on my 135 and dropped the little banjo bolt that goes through the fitting on the back/side of the head on the carb side. I'm guessing its an oil fitting. The little pipe the bolt goes through is thin, rigid metal and it goes forward.

If anybody knows what size that bolt is, I'd really appreciate it.
Meanwhile, I'll try to find a diagram so I can maybe get a part number....
 
Upper oil line bolt is 731 294 M1 for the Perkins gas, parts list does not give a size. Most likely fine thread as that's what Perkins used on hardware. Lower oil line bolt is 731 248 M1. Maybe one is 1/4 fine and other is 5/16 fine? I'll try to look at my forklift, it has the Perkins gas in it too.
 
Hey thanks!

I should have mentioned it's the 3cyl gasser.
I would have liked a diesel, but this one came cheap and was a an up-grade from the Deere 420U I'm junking.
 
Though I haven't found the bolt, I did find one of the washers and I tried a couple of regular bolts in the head to see what size bolt I should look for tomorrow. Both the washer hole and a standard thread bolt that seem the right size & wrong thread are 3/8".

Also, with the tank still out, I fired-up and moved the tractor so I could look for the banjo bolt.
It ran off what was in the carb bowl. Nothing came out of that skinny pipe the bolt is missing from.

I was expecting oil to shoot out of it.

I'm hoping one of the nearby(ish) tractor dealers will have the bolt. NAPA certainly didn't.
 
No luck so far, but I spoke to a local tractor dealer and he says he can make a bolt if I find a regular bolt that fits.

I thought I'd better add a picture in case somebody can tell me what it is. I found a parts diagram online 9Long search) and the pipe is MAYBE depicted on the engine diagram but not identified. It goes from the base of the distributor and ends on the head (opposite side of the engine). No idea what it's for, but it doesn't seem to leak. Vacuum maybe?

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FWIW. I Found dimensions on a French web site:



BOLT Width : 30 mm
Height : 10 mm
Depth : 15 mm
Weight : 0.01 kg
 

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