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Old 10-08-2016, 09:40 PM   #3
backyard
Gone Wild
Columbia
 
Join Date: Jun 2015
Location: East TN
Posts: 525
Default Re: Reversing Switch, Directional Key Switch, & Starter Circuits

COLUMBIA MODELS WITHOUT 5 SOLENOIDS

The first attachment shows what terminals are connected within the directional key switch when in forward or reverse. This can be used to test the switch. The spade terminals are for the ignition circuit and the round terminals are for the starter circuit. In other words, both the ignition circuit and starter circuit are built within one switch, unlike the HD models.

The second attachment (gif) shows what happens when you turn the key on and press the accelerator in forward and reverse. As you can see there is a slight difference in forward and reverse. In forward power comes out of terminal I to feed the rest of the circuit but in reverse power comes out of terminal G and piggybacks with terminal I (to feed the rest of the circuit) while powering a reverse buzzer. The diode prevents power from feeding back to terminal G while in forward so the buzzer doesn't sound. The end result is this ignition circuit activates the starter solenoid which activates the starter circuit.

The third attachment (gif) shows what happens with the starter circuit. The ignition circuit is shown as energized. What happens within the switch is, in forward F1 connects to A2 and A1 connects to ground, and in reverse F1 connects to A1 and A2 connects to ground. The circuits power comes from the battery, through the starter solenoid, through the F terminals of the starter, and into the E terminal of the switch. The connections in the switch and the patch of the circuit from here out decides whether the starter is in forward or reverse. Power flows out of either the F (A2-forward) or B (A1-reverse) terminal of the switch into the armature windings of the starter. Power then flows out of the armature windings back to the other terminal of the switch. That terminal is connected to the A terminal which is grounded. When the circuit is complete the starter turns.
Attached Images
File Type: png ColumbiaContinuity.png (35.6 KB, 0 views)
File Type: gif ColumbiaIgnitionCircuit.gif (113.8 KB, 0 views)
File Type: gif ColumbiaStarterCircuit.gif (141.7 KB, 0 views)
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