100K Potentiometer (R2); Test Procedure; R2 Potentiometer Removal - Clarke Clean Track® L24 56317170 Service Manual

100K Potentiometer (R2)

Warning!
Note: The potentiometer (pot) doesn't have to be removed from the drive paddle cover to test.

Test Procedure

1. See Figure 22. Remove the front drive paddle Cover (G) from the Rear Housing (H) held together with four Screws
(I). Note that the cover will have the speed limiting pot (R2) mounted to it.
2. Note the location of the three wires for reassembly, then disconnect the wires from the pot and remove the cover.
3. Test the (R2) potentiometer's resistance values using an ohmmeter as follows. Its specification is 100,000 ohms
(plus or minus 10%).
a. Connect the meter leads to each of the outside connections on the potentiometer. The meter should read
approximately 100,000 ohms.
b. Take one of the test leads and connect to the middle terminal, then turn the stem both directions. The
resistance value will change (vary), increasing and decreasing through its full range of 0-100,000 ohms and
100,000-0 ohms approximately.
If you do not get similar readings, replace the potentiometer.

R2 Potentiometer Removal

1. See Figure 25. Remove the Setscrew (L) (1/16" wrench) and pull
the Adjustment Knob (M) off of the pot stem.
2. Remove the pot's anchor nut (1/2 inch wrench), then remove the
Pot (R2) from the drive paddle cover.
56 - Form No. 56043161 - Clean Track
Disconnect the battery pack before servicing machine.
L24
®
Figure 25