John Deere A tractor........

banjoman09 · Jul 19, 2016

Hi guys; any of you very familiar with this "A" tractor? Just purchased one I have a few things to fix. The PTO shaft does not engage; and yes, I have moved the "lever" to the left. Also,the tall handle on the lefthand side of the seat- I assume is for the 2-point on back of tractor? It doesn't not seem to do anything either; and yes I can move the lever forward and backward; Im thinking of pulling the "rockshaft" but want to make sure i'm not overlooking something. If I can call you that would be great - or post messages. Thanks for your help.

JDIH · Jul 19, 2016

The rockshaft won't work without the pto running

banjoman09 · Jul 19, 2016

ok and how do I "engage" the PTO ? Im new at this model.....thanks

55 50 Ron · Jul 19, 2016

Which lever did you move to the left? There is a PTO engagement lever and there may be ( depending on age of tractor) another lever for high and low range of the transmission which should be marked "H" and "L" for the two positions.

55 50 Ron · Jul 19, 2016

I should have asked what year is your tractor. You can tell by the serial number. Post the serial number and we can identify the year. Knowing the age of the tractor helps to know which control levers it has. Also what is your location? Maybe some one here is close by and could help in person.

cuby · Jul 19, 2016

Move the small lever to the left and then engage your clutch. Pto should work along with the hyds. These two items are not live unless clutch is ingaged.

banjoman09 · Jul 19, 2016

I will try again - but I did this yesterday and nothing. The guy I bought this from says the previous owner unhooked it somehow for a "pulling tractor"....then again...he may not know. But yes.....clutch engaged and lever to the left.... the PTO shaft does not turn. I will try after supper. Thanks.

banjoman09 · Jul 19, 2016

yes...the PTO lever....and there is a lever for high and low also. 1950.....thanks....but he also said it has a "49" transmission.

JOCCO · Jul 19, 2016

Banjo here are my best guess. The is a gear the pto lever moves to engage the gear train well it or its brothers break once in awhile. It is in the very, very bottom and a pain to get at (tranny dismantle) Next there is a jack shaft between the rear pto and this gear it has two couplers they could be stripped or broken. The pto must be turning to get the hydraulic pump working. Get one of those it service manuals and it spells it out and has pictures too.

banjoman09 · Jul 19, 2016

serial number is ; 643883

amo · Jul 19, 2016

If you can get a manual that always heps to understand tractors Amo

greenmech · Jul 19, 2016

Previous owner probably removed the shaft and coupling inside the case. If it doesn't engage, you will need to remove the rock shaft and have a look. Send me a e-mail and I'll call you, Ron Mn

Meangreen · Jul 20, 2016

(quoted from post at 00:07:40 07/20/16) yes...the PTO lever....and there is a lever for high and low also. 1950.....thanks....but he also said it has a "49" transmission.

Not sure what's going on here. Your serial number would mean your tractor is a 1949, but it shouldn't have a high/low for the transmission. It should be a 6 speed since that change was made in 1947.

Quite possibly you have a cobbled together tractor and the fact it was used as a puller, that doesn't surprise me.

Leroy · Jul 20, 2016

The 2 lever shift was made between 1950 and 1951. That is if I remember correctly without looking it up but it might have been 1949 and 1950. The same 2 lever shift in pressed frame models was used from 1947 to either 1949 or 1950 the same type of 2 lever shift was kept that was used from 1934 and in the pressed steel frame tractor that 2 lever shift was the high speed tranny, When they went to the single shift lever in 1951 they went to a slow speed tranny with second being equal in speed to first in the 2 lever version and was way better on PTO operation as you could slow down more fore the combine or corn picker for heavy crops. The 2 shift lever tractors had a round rear axle while the single lever had a square rear axle. That single lever shift gave them the same speeds as the pressed frame B.

Rich'sToys · Jul 20, 2016

This is at least the third time you've posted about this. You've received numerous suggestions and advice from many different people. At some point you're just going to have to tear into it and find out what is actually going on. Or we can keep speculating from now till Christmas!
Good luck, and let us know what you finally find out.

banjoman09 · Jul 20, 2016

Oh you guys...how short fused you are; I was asking to make sure theres nothing else to do but take the back off- thats all. Ok, lets drop it; ill tear it apart.

banjoman09 · Jul 20, 2016

ok....it does have high/low lever....it is a 6-speed.... and the seller said it is 1950 with 49' transmission....can this be right ? Thanks !

Tx.Ricefields · Jul 20, 2016

The s.n.shows the tractor as a '50 and that is the yr. they changed to a straight 6 speed. As I remember there was some 2 stick transmissions used in the '50 tractor until the replacement was made (there is an exact s.n.of the change over). The straight 6 speed was a preferred transmission for pulling because it has the granny LOW. Who knows what someone did to disable the PTO or why? Can you turn the pto by hand or does it seem to be locked up?

Pete in MD · Jul 20, 2016

The 1st model year 1950 A was 640246. You said yours is 643883 so yours is a 1950.

The 1st single stick trans was 648000. The two stick trans on your A is the way it left the factory.

The 1st square axle housing was 650764.

Now it's time to remove the rockshaft housing and see what is broken or missing in the pto system.

banjoman09 · Jul 28, 2016

Took top cover off and found the problem ; pulled Rock Shaft and found a "coupler" split into.....have it fixed now and thanks for all your help!

John Deere A tractor........

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