JD40C

[Dana]

Hi guys,
Unless this machine has been totally updated, I am lost. The JD 40C serial #(70826),On the left side of the gear box/engine block, indicates to me that is was built in 1955 but clearly has 5 rollers. Is this common? I know that it had extensive work to it before it sat for so long. Am I missing something?

[Stan Disbrow]

Hi,

No, sounds about right.

The 'M' series tractors were produced 1947-52 and then the 40 superseded it.

IIRC, the 'MC' came out 1949 or 1950, a bit later than the M wheel tractor variant. The MC was 3-roller only, or at least I don't ever recall there being a 4-roller MC. Might have been some right at the end there, given the way Deere tends to work in changes.

The 40 was either 3-roller or 4-roller *at first* but then they added the 5-roller during the 40 series production. Since the 420 superseded the 40 in 1956, then your having a 1955 5-roller 40c sounds about right to me.

later!

Stan

[Paul Buhler]

Half an hour later with a power washer, he loosened up every link except for a handful and saved the tracks.

I found this in an older discussion from Lavoy and thought it worth a try. I've found my power washer an asset when working on my machine - It lets me see the problem better, makes the work more pleasant (cleaner), with care has few unintended consequences, and it does help loosen things up. Paul

[Stan Disbrow]

Hi,

And, after the power washing gets it on the road to freedom, go find a ditch with some water in it and run the tracks thru that and they'll really free up.

Everyone: Note that part about being careful with the pressure washer, though. There are things you don't want to point that jet at....

When we had the dealership, I often had the 'kid job' of running the steam cleaner. One of those *really* makes the shi...er...stuff fly!

later!

Stan

[Lavoy]

5 roller track frame was an option from about 64,000 on up.
Lavoy