Grade Pot Wires - Quinton ST 55 Service Manual

RepairfReplacement and Calibration
7. Slip the grade pot out of the gear wheel and bracket.
8. Replace with new pot:
a. Slip the grade pot into the hole in the pot bracket, then into
the gear wheel. Tighten the nut to 20 inch-pounds torque.
b. Use the two screws from Step 2 to reinstall the pot bracket,
engaging the gear wheel with the rack gear as you install.
Caution
To prevent damage, don't mesh the gears too tightly.
Leave
1/16
inch clearance for each gear.
c. Be sure to leave the setscrew accessible and loose.
d. See Grade Pot Wires below.
9. Calibrate the grade pot.
Grade
Pot
Wires
At the end of each grade pot wire is a pin with a small metal flange.
The flange has a corresponding slot on the connector housing.
1. Insert each pin into the connector housing until it clicks slightly.
The flanges will be visible through the slots in the housing.
Red wire: slot 5 Red wire: slot 5
Black wire: slot 4 Black wire: slot 4
Blue wire: slots 1 & 2 No blue wire
2. Verify that the pin has engaged by pulling lightly on the wire.