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Antique Steel Wheel Tractors - Old Iron Lugs and Cleats Photos and information about antique steel wheeled farm tractors. This is where to find the heaviest of Old Iron tractors.

Antique Steel Wheel Tractors - Old Iron Lugs and Cleats

Fiat 702 Tractor


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  #11  
Old 11-30-2017, 10:03:03 AM
Molinegb Molinegb is offline
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Default Re: Fiat 702 Tractor

Odd it has Whitworth bolts. Tell it has been apart before. My Norton motorcycle had Whitworth wrench set in toolbox.
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  #12  
Old 11-30-2017, 01:02:58 PM
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Phil Johnson Phil Johnson is offline
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Default Re: Fiat 702 Tractor

Got an e-mail from David Parfitt regarding the model of this tractor and it appears to be indeed the later model 703. The radiator tag states 703 7230113. The engine tag is 302A 7130113 and the tag on the rear casting is 703 7430113. I suspect the recurring number 30113 is the actual tractor number.

Thanks, David.
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  #13  
Old 11-30-2017, 01:33:10 PM
IHCparts IHCparts is offline
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Default Re: Fiat 702 Tractor

FYI; there will be an 702 up for auction in the Netherlands soon: http://www.vdiauctions.com/lot/lot-d.../2558/fiat-702
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Old 11-30-2017, 03:12:50 PM
Norm Johnston Norm Johnston is offline
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Default Re: Fiat 702 Tractor

Phill when I restored my Swedish AVANCE tractor from the mid 1920's The nut sizes had me confused for awhile. they were all whitworth threads and some appeared to be sae nuts and some metric nuts. It was only when reading the parts book I found that in the tool kit originally was supplied spanners in 32nds ie 19/32 etc. maybe it is the same with that Fiat.
Good luck with the block repair, it sure has its fair share of cracks.
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Old 12-01-2017, 10:52:47 AM
AultmanTaylor AultmanTaylor is offline
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Default Re: Fiat 702 Tractor

Hi guys,

A lot of the very early European tractors use withworth treads. Our 1913 Pavesi does, as do a lot of the early Lanz, ...
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  #16  
Old 12-18-2017, 12:38:24 AM
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Default Re: Fiat 702 Tractor

The fuel tank was beyond repair so it is now over at the Robb McCollum's shop so he can make a replacement.

The block is still out for repair so I had a look at the rods and pistons. Rings all look good and are all a nice fit in their grooves, but #3 rod bearing seemed to be binding on it's journal, so I removed it and measured it and the journal and the side to side measurement was fine at about .003 clearance, but the top to bottom was the same as the shaft. The rod also had a slight bend in it. After straightening and a little careful hand scraping the clearance was adjusted to .003 and it now fits nice on the shaft. There are no shims on these bearings.

Number two had a tight spot on the wrist pin bush so it was taken apart and the bush was not centered in the rod so it was pressed in to where it belonged and a very light hone cleaned that up.
I didn't like the rod bolt assembly on #2 as the bolts had been replaced and the castellated nuts were too short so were spaced out with a stack of three lock washers under each nut! I'll replace these with deeper castellated nuts when it goes back together.
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Old 12-18-2017, 08:19:57 AM
Stuart Landry Stuart Landry is offline
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Default Re: Fiat 702 Tractor

Phil,
Good to see another old FIAT tractor , I have a 703 model ,
The clutch pedal works the opposite way on my 703 ,
You push & lock the pedal down to drive ,
Thus compressing the clutch spring , Which in turn can put added end thrust on the crankshaft?
Might be a good idea to check the end float on the crankshaft ,
As there is not much room for the conrods in the crankcase cut out ,
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Old 12-18-2017, 11:04:12 AM
Tony Thompson Tony Thompson is offline
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Default Re: Fiat 702 Tractor

Threads like this are very valuable!
Many of us will never work on something as unusual as you often do. Documenting your skill-set with your frequent unique projects allows all of us old iron hounds to learn as you go. Very entertaining and educating at the same time for lots of enthusiasts

Thank you very much Phil

Are you going to arc-n-nickle or employ the spray transfer?
Tony
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  #19  
Old 12-18-2017, 12:36:11 PM
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Default Re: Fiat 702 Tractor

Stuart, the tractor is a 703 (see post #12). Clutch works as you said. I'm not sure how to change the title.

Tony, the block is at Cal Blakeney's Edmonton Cast Iron Repair, a specialty shop here. They did extensive repairs on the 20-35 Allis heads that went to Jacob in Wi., and have done other cast repairs for myself and others on the Stak. They are using the cast iron fusion welding process which entails heating the block to red heat and welding the cracks while hot with the oxy-acetylene process using cast iron filler material.
It's and expensive process, but the best way to repair cast. Cal is going to do this one himself.
He was one of my students many years ago when I taught welding at the tech school!
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Old 12-18-2017, 09:40:52 PM
Brasherman Brasherman is offline
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Default Re: Fiat 702 Tractor

Great looking project! Nice that you know the guy welding it learned from a great instructor! That will be a heck of a job for him!
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