TEA-20 rookie starter questions

boingy · Jan 5, 2017

Hi folks,

First post.

I have some rookie questions about the starting gear on a 1951 TEA-20.
This is type where the starter motor is energised by pushing the gear lever into the "S" position, presumably to ensure you're not in gear when you start it. There is currently no battery fitted so I have a multimeter on the starter terminals to check the switch.

Questions:

1. The lever stays in the start position when I release it. Is that how it should be? I expected it to spring back out.

2. Is there anything that stops the starter being engaged when the engine is running?

Thanks,

Ian

Bruce(OR) · Jan 5, 2017

Ferguson relied on people being smart enough to engage the "S" position with the shifter lever to start the
engine and then smart enough to release it once the engine started. It will not automatically pop back out.
There is absolutely nothing that will prevent you from shoving it back into the "S" position once the engine is
running and grinding the starter other than careful operation of the shift lever. When you get in a hurr to
shift the gears, it is possible to "bang" the starter.
Now your looking for a solution, RIGHT? That solution is dependent upon how far off original you desire to go.
It utilizes a by pass switch, 4 PSI oil pressure switch and a Ford double post starter relay.

boingy · Jan 5, 2017

Hehe, thanks for the quick reply.
I guess I'm finding it odd that Mr F assumed folks were dumb enough to try to start it in gear but smart enough to not hit the starter when it is already running, especially as it is so close to the 3rd gear position.

I think I can picture your solution but I'll probably stick with it as it is for now. I just wanted to check that it was not missing a return spring or a mechanical gate or something. Somewhere in one of the many TE/TO manuals I've read recently there was mention of lifting the lever over a "bump" to get to the start position.

John Deere D · Jan 5, 2017

Pic:
(1) TEA 20 12 Volt

(2) TEA 20 6 Volt

(3) Connector rod to STARTER RELAY SWITCH

Bob..

boingy · Jan 6, 2017

Thanks, Bob. Ours is 6V which is why it has not got a battery yet.

I don't know what prices are like at your side of the pond but in the UK you pay double for a 6V battery compared to a 12V so I'm checking the tractor over before buying one.

TEA-20 rookie starter questions

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