JD 70 pony motor

[mul-skiner]

Im interested in buying a JD 70 the guy said the pony worked and ran fine untill one day there was an awful sound in the clutch of the pony he took the cover off by the clutch and he said there were some bent bolts in there can someone tell me if this is going to be exspensive fix or not.

 

[johndeeregene]

yes its green, its a anything to do with a pony motor. its goin to be high.
johndeeregene

 

[RobMD]

At the VERY WORST, the pony could have threw a rod or decapitated itself because of the sudden stop. You're looking at a possible electric conversion... you..just..never..know... with a pony that just stops.

 

[bill mart]

do you know if the pony suddenly stopped when the noise started or did they just shut it down ? bill m.

 

[mul-skiner]

Bill it still runs fine and it did not stop suddenly the noise came from in by the clutch he said he does not use it, for it might cause further damage. Thanks.

 

[buickanddeere]

Look over in the JD section of this site under some F.I.T. postings.
Your buddy with the 70 obviously wouldn't know what a service manual was if one hit him.
Over 50 some years. No maintenance,wear,dirt, dust, rust and dried up lube in the clutch rollers are the problem.
The wild guesses of connecting rods is just a wild guess. Rods aren't a problem if the operator had half a wit and changed the engine oil once and a while. An shut the gasoline valve off instead of thinning the lube oil with gasoline.
These quick easy fixes with an electric start rarely work out too. Somebody gets the idea that a 12V battery, a MT40 delco starter, a bracket and a $59.99 Napa starter will work.
Those cob jobs might work, if at all. If slam started on a warm day.
Have a look, most of these conversions are half done jobs with a tangle of disconnected wires, no working lights or instruments. Mismatched sheet metal & dash. And most need to be boosted or pull started anyways.
Those are 376 and 482 cubic inch two cylinders. They take the same cranking effort on the compression strokes as a 1128cu" or 1446cu" diesel. What's on those for cranking systems?
You wouldn't think of less than a two group 31 batteries, 4/00 cables, and a Delco MT42 starter. 24V if you want it to start in weather where you would wear a coat.

 

[mul-skiner]

Buick and deere Im with you I would like to keep this tractor original oh by the this guy is not my buddy though he is tring to sell his seventy he said a deere mechanic told him over the phone it would not cost that much to fix (just wanted another opinion) Thank you for your time.

 

[kendak]

stay way way away from any Deere with a pony motor....this is the got to be the most stupid thing JD every did to a tractor....sold my 820 because of the pony ...got a 730D ES & can crank & go in less than a min.....uses [1] gp 27 batt....Kent

 

[Jimmy Umfress]

I have a JD 70 ES on LP run a gen. and 1 850 CCA bat. starts easy any weather. Mine is a 53 year model, have a friend up the road has a 56 year model 70 on alt and one 12 volt bat. starts good too.