Starter Switches, Key Switches, and Thermostarter Plugs
Part of the standard engine package for all the tractors listed on this page was a thermostarter system, aiding cold starts. This ingeniously simple system featured a combination glow plug and fuel valve
threaded into the intake manifold. Fed from the fuel return line off of the injectors, the small thermostart reservoir held enough fuel for a cold start.
Turning the starter switch clockwise to the first position activated the heating element of the thermostart plug; the heat thus generated by the energized
element un-seated the ball valve (which otherwise kept the fuel shut off) above it, letting a small charge of fuel from the reservoir trickle into the intake manifold.
The heat from the coil then ignited this fuel within the intake manifold, thus heating the air within it. Turning the starter switch the rest of the way then activated the starter,
thus drawing this heated air into the engine, allowing it to start. Releasing the spring loaded starter switch then turned off current to the heating element.
Cool air rushing in through the intake manifold, and thus over and past the thermostart plug, would reseat the ball valve within it, thus halting fuel flow.
The reservoir would then be re-filled by the return fuel line, and remained ready for the next time it was required. Far more eloquent was this system in operation than it has been described here.
Starter/Thermostart Switch $59.50US
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Key Switch (with keys), for: $42.50US |
Oliver/Cockshutt 1250-A, 1255, 1265, 1355, 1365 White 1270, 1370, 1470, 2-50, 2-60 MM G350, G450 AC 5040, 5045, 5050 Long 310, 320, 350, 445, 460, 480, 510, 520, 550, 560, 610 UTB 300, 320, 340, 350, 353, 445, 453 500, 530, 533, 550, 553, 640, 683, 703 Hesston 420, 445, 450, 480, 480-8, 500, 540, 550, 600, 640 $5.00US
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Thermostart Plug, for:
Oliver/Cockshutt 1250-A, 1255, 1265, 1355, 1365 $25.00US |
Glow Plug, for:
Fiat/Cockshutt 411R $22.00US |
