Has a 371 Detroit Engine that the governor is no working all rusted up

Has a stuck injector and got it freed up, can run manually working fuel rail

Steering clutches may need adjusted

Non adjustable blade

I have the opportunity to purchase a 1971 6 for 1800.00

It has a broken sprocket axle on the right rear (looking from the back forward)

It doesn't have a Detroit Engine, the oil pressure was about 30 psi

Is the oil pressure too low 

Engine does not have a turbo

Has a manual tilt blade

Will parts interchange between these to machines mainly sprocket axels

Should I go ahead and buy the 71 model and replace the axle

About how much does an axle cost

I have about 10 acres of bottom with 4-6" trees i want to clear, will a 6 be big enough

Any help would be appreciated

I went out and checked Model number on Detroit powered dozer earlier this morning.

You are correct it is a HD7. So no interchangeability of parts.

The Serial number is 13524 which I believe makes it a 1947 model

Not sure where to start trying to get the governor to work correctly so it will idle and throttle correctly. I guess I could start taking it apart working my way back to the Blower and down the linkage on the side of the block.

 I have another 371 Engine not sure if the bolt patterns are the same as it is a new motor that was used in the oilfield.

I like the idea of the 6 being a 1971 model just not sure of sprocket shaft being available as well as bearings and seals and how hard it is to replace.

Thanks for the info.

Thanks for the picture of the push bar.

The 6 is supposed to have one with it, just wasn't there with the dozer at the time.

I can make one as well if the one with it is too light. That picture gives me a lot of detail to pattern one.

Thanks

not sure if I will buy the 6 or not.

The guy won't answer or return calls or text

I tried to locate a shaft here locally to no avail, seller said they had two on the shelf.

Oh well. I will try again tomorrow

I was thinking it was a 6 spline form what I could see that was something that i was going to check on. That and the serial # for sure

That will tell the real story

There were some other concerns I had with the dozer as well, no air filter, not enough fluid to properly operate bald, fresh coat of paint (yellow and Black) 

I am still interested in the dozer if I can just get a hold of the seller.

Thanks for the info. Will post more as I find out.

I have not bought the 6 yet.

I think it is a 6 spline

air these shafts something that breaks on a regular basis or is it from abuse / neglect

If I get the 6 I will check with you on pricing

Thanks

he is supposed to send me serial number and spline configuration as well as contact info for parts on shelf

I will look at dozer when I get back in two weeks form now

Thanks for all the info

I've got a HD 6G with the 20 spline rear sprockets but they're pretty worn out.  I found a set of New Old Stock 6 spline sprockets for pretty much scrap price.  Anyone know if the shaft diameter was the same or if it's viable to have the 6 spline machined out to fit my 20 spline axle?  Any advice appreciated.

I checked with my friend who is doing the work, he can get pretty much unlimited machining work for free so that's not a problem, same with welding or fabrication.  The sprockets I'm looking at one is brand new never been installed.  

Next question he threw at me is if I have any idea for finding a track chain?  It's worn down to the center pin on more than a few links.

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