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Back in the early days almost all diesels had pony motor starters!
Neither electric motors or batteries were all that good back then.
Eventually they got better and glow-plugs were installed as well
relegating pony motors to a piece of history.
What you may not know is the pony motors generally also heated the
intake manifold providing warm air to the diesel during start and also
were water cooled with water circulated through the diesel block. Hence
on the JD at least the pony motor had two speeds 'start' and 'run' which
meant 'start the diesel' (max power) or 'run the pony' which was about
half speed and intended to warm the diesel so it would start. I
personally started that tractor at below(f) zero with no issue.... it
just took 20 minutes. :-)
- DrF
On 12/27/2021 12:52 PM, Gad Miron wrote:
A John Deer?
I thought only Caterpillar Diesel tractors had a pony motor.
What do you know!
A Happy New Year DrF and everybody on the i team.
Gad
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