How do you start a John Deere 70 Diesel?

Im an I.H. and A.C. man but I just bought a J.D. 70 Diesel with a pony and have no idea how to get it started . Can it be explained here or do I need to try and get ahold of a manual? I'm hoping its easier than it looks. Thanks
Eric

Push the throttle a head a little.. Turn gas switch for pony motor on all the way turn the light switch one click , press the little starter pedal down by left foot, use the throttle and choke switch on left if the dash, let her warm up a bit ( don"t just let the pony motor start and scream wide open it will last longer if u let it warm up properly and let it warm up the big engine) when it"s ready to go after a couple minutes pull the lever on the left that engages the fly wheel.. Hope this helps.. Good luck..

Thanks! That sounds doable. I've never used a tractor with a pony before. I've read the 70 set fuel economy records that stood for decades

I thought one was suppose to let diesel engine turn over a few revolutions before pushing throttle forward to give the diesel any fuel. Also be sure and turn ign switch off after diesel starts as pony motor coils are expensive.

When I am turning over the diesel engine, I let the oil pressure build in the diesel before giving it compression and fuel.

You are correct Jim, there are a couple steps
missing. The poster would be WELL advised to get
a manual.

On my 720, a little different than the 70, I motor
the big diesel over with no compression til the
oil pressure comes up. Then I release the
decompression lever, motoring on full compression,
and then advance the throttle, and it will start.

I've never started a 70 with the one lever system,
the 720s and 820s I've run all had the separate
decompression lever. Can someone on here explain
the one lever system??

I walked down to the shop and pulled a 70 diesel owners manual. (B&D would be proud) 1. Turn on the gas two or three turns. 2.Set the cranking engine throttle lever to the right in the start position. 3.Turn the ingition light switch to the I position. 4.Hold choke leverto the left. The engine will not continue to run in this position, when engine starts release the choke. 5 On tractors equipped with starter pedal step on pedal to operate electric starting motor. Release when engine starts 6.On tractors without starter pedal push starting control lever forward to operate the electric cranking motor. Starting the Diesel engine. 1 Allow the cranking engine to run a short while One to three minutes. 2. Place cranking engine throttle lever in run position to the left. 3.SLOWLY pull the starting control lever all the way to the rear. Movement through the first half of lever travel relieves compressonin the diese engine. Movement through the second half of lever travel engages the cranking engine clutch. Lever will remain in the extreme rear position. Allow the cranking engine to motor the diesel engine UNTIL OIL PRESSURE REGESTERS ON OIL GUAGE. 4. Push the starting control lever forward until the swivel almost contacts the jam nuton the transmisson control rod. This put diesekl engine on full compression. Allow the engine to motor a few revolutions then advance speed control lever halfway. 5. AS soon as the diesel engine starts and runs push starting control lever forward enough to trip the transmisson control rod. I hope this helps. Rodney

Wow that does help thank you very much for typing all that! That does seem a somewhat complicated process. Now I need to familiarize myself with where all the levers are. Thank you

These instructions are from the John Deere Tractor Model 70 Diesel Operator’s Manual OM-R2032R under the [b:654c4848f0]STARTING THE ENGINES[/b:654c4848f0] topic on pages 28-30.

<a href="http://s200.photobucket.com/user/jameslloydhowell/media/John%20Deere%20Equipment/Big%20John%20and%20Krone%20260/Pony%20Motor%20Start/33fa6dac-f0ed-4008-96e2-7d5c41a8a772.jpg.html" target="_blank"> </a>

[b:654c4848f0]PRELIMINARY STEPS.[/b:654c4848f0]

(1) Set gear shift lever in neutral and pull the clutch lever back into disengaged position.

(2) In cold weather, set power shaft shift lever in disengaged position to relieve drag on engine caused by cold transmission oil. If power shaft is to be used, permit engine to warm up before engaging power shaft shift lever. [b:654c4848f0]CAUTION: Stop engine before engaging power shaft gears.[/b:654c4848f0]

(3) Make sure fuel shut-off valve at sediment bowl (located under main fuel tank) is open.

<a href="http://s200.photobucket.com/user/jameslloydhowell/media/John%20Deere%20Equipment/Big%20John%20and%20Krone%20260/Pony%20Motor%20Start/IMG_3565.jpg.html" target="_blank"></a>

(4) See that diesel engine speed control lever is in the “stop” position (all the way to the rear with stop pin pulled out).

<a href="http://s200.photobucket.com/user/jameslloydhowell/media/John%20Deere%20Equipment/Big%20John%20and%20Krone%20260/Pony%20Motor%20Start/97d71a47-56b9-4339-8b4d-ed08c90a44ed.jpg.html" target="_blank"></a>

[b:654c4848f0]STARTING THE CRANKING ENGINE.[/b:654c4848f0]
(1) Open fuel shut-off valve two or three turns by turning it counter-clockwise.

<a href="http://s200.photobucket.com/user/jameslloydhowell/media/John%20Deere%20Equipment/Big%20John%20and%20Krone%20260/Pony%20Motor%20Start/8dfab70c-3449-4eb5-a63b-1a1c50460a9c.jpg.html" target="_blank"></a>

(2) See that cranking engine throttle lever is in “idle” position.

<a href="http://s200.photobucket.com/user/jameslloydhowell/media/John%20Deere%20Equipment/Big%20John%20and%20Krone%20260/Pony%20Motor%20Start/a67de705-48a8-41b7-8f7c-285f2c24a25d.jpg.html" target="_blank"></a>

(3) Turn ignition-light switch to “I” position.

<a href="http://s200.photobucket.com/user/jameslloydhowell/media/John%20Deere%20Equipment/Big%20John%20and%20Krone%20260/Pony%20Motor%20Start/30ca3315-dc54-4e2d-b6ab-e02fbdaf7421.jpg.html" target="_blank"></a>

(4) Hold choke lever to the left. The cranking engine will not continue to run with the choke in this position; therefore, when engine starts, release the choke lever. It is not always necessary to choke a hot engine.

<a href="http://s200.photobucket.com/user/jameslloydhowell/media/John%20Deere%20Equipment/Big%20John%20and%20Krone%20260/Pony%20Motor%20Start/0ddfab1b-83d9-4f3e-9393-86ccc3648109.jpg.html" target="_blank"></a>

(5) Push starting control lever forward to operate the cranking motor. Release lever when engine begins to run.

<a href="http://s200.photobucket.com/user/jameslloydhowell/media/John%20Deere%20Equipment/Big%20John%20and%20Krone%20260/Pony%20Motor%20Start/7f044174-84ec-430d-9bd4-dee3df308366.jpg.html" target="_blank"></a>

[b:654c4848f0]STARTING THE DIESEL ENGINE.[/b:654c4848f0]



(1) Allow cranking engine to run a short while before engaging it with the diesel engine. The length of time will vary with temperature conditions, being normally from 1 to 3 minutes.

(2) Place cranking engine throttle lever in “run” position (to the left).

<a href="http://s200.photobucket.com/user/jameslloydhowell/media/John%20Deere%20Equipment/Big%20John%20and%20Krone%20260/Pony%20Motor%20Start/c5c0ee62-bc88-498f-bd2c-a4ed41c8abb6.jpg.html" target="_blank"></a>

(3) Slowly pull the starting control lever all the way to the rear. Movement through the first half of lever travel relieves compression in the diesel engine and engages the cranking with the diesel engine. Movement through the second half of lever travel engages the craning clutch. Lever will remain the extreme position. In cold weather it normally necessary to turn (or “motor”) the diesel engine longer before it will start.

<a href="http://s200.photobucket.com/user/jameslloydhowell/media/John%20Deere%20Equipment/Big%20John%20and%20Krone%20260/Pony%20Motor%20Start/IMG_3575.jpg.html" target="_blank"></a>

Allow the cranking engine to motor the diesel engine [b:654c4848f0]until oil pressure registers on oil gauge.[/b:654c4848f0]

Push starting control lever forward until the swivel almost contacts the jam nut on the control rod. This puts diesel engine on full compression. Allow engine to motor for several revolutions then advance speed control lever about halfway.

<a href="http://s200.photobucket.com/user/jameslloydhowell/media/John%20Deere%20Equipment/Big%20John%20and%20Krone%20260/Pony%20Motor%20Start/7e807406-1d71-4dfc-860c-016daf4a0754.jpg.html" target="_blank"></a>

<a href="http://s200.photobucket.com/user/jameslloydhowell/media/John%20Deere%20Equipment/Big%20John%20and%20Krone%20260/Pony%20Motor%20Start/IMG_3564.jpg.html" target="_blank"></a>

[i:654c4848f0]NOTE: Do not advance speed control lever until diesel engine oil gauge shows pressure and engine is turning freely on full compression.[/i:654c4848f0]

As soon as the diesel engine starts and runs, push starting control lever forward to neutral. [b:654c4848f0]CAUTION: Do not push lever beyond neutral.[/b:654c4848f0]
[b:654c4848f0]STOPPING THE CRANKING ENGINE.[/b:654c4848f0]

Turn off the fuel to the cranking engine. Wait a few minutes to allow engine to use [b:654c4848f0]all[/b:654c4848f0] the fuel in the carburetor, then [b:654c4848f0]turn off[/b:654c4848f0] the ignition switch.

Once you get the <a href="http://youtu.be/DZOJW_N5yoM">pony motor (cranking engine) running</a>, you can <a href="http://youtu.be/TtEgyQRzzpg">start the diesel engine easily</a> with a little practice.

Enjoy your Model 70 Diesel tractor.

Hope this helps.

Wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong

(quoted from post at 10:44:22 07/05/13) Wrong wrong wrong wrong wrong wrong wrong wrong wrong wrong

Click to expand...

Hey b&amp;d what's wrong,wrong,etc.??????

Wow thank you for going to such great lengths. The pics and explanations help so much.
Eric

The original single lever process simply energized the cranking engine's starter motor when you pushed it forward. It took a pretty stout push but that's how it worked. The trouble with it was if you pushed too hard when disengaging from the Diesel it was possible to re-engage the cranking engine's starter with the then running (at about 6000 RPM) cranking engine.

Normally this forward motion on that single lever was taking place when the diesel had just started. On the 70D the cranking engine was governed at 6000 (I think they calmed them down a bit on the 720 and 730) and he had just finished his task of starting the diesel so it was going full bore which was NOT a good time to ever bump the starter drive pinion into the flywheel.

They re-designed them starting with 7026869. Earlier 70's could be converted using the AF 2305 starter pedal assembly kit. I have one such "converted" tractor.

Hope that helps.

Hmmm the pics won't come up any more, any chance you could email them? [email protected]
Thanks

Click on the "photo image" and it will take you to my Photobucket account.

All of the photos are "visible" at my Photobucket account.

Let me know if this doesn't work for you.

Jim ohio is washing down the cylinder walls with
raw fuel and contaminating the crancase oil. Slobber
up the stack too.
Deere also requested prelubing the bearings
before applying compression. And it just makes sense
to do so when possible.
Two lever tractors whose operator doesn't use the
decompressor suffer more clutch wear.