Justy L3-1189cc 1.2L (1987)
Check insulation resistance between each slip ring and aluminum bracket of the electromagnetic powder clutch using an ohmmeter (set in the max. ohm
range). If continuity exists, replace the electromagnetic powder clutch.
Do not attach the test probes to the slip rings with alligator clips as this may scratch them.
Use an ammeter in series with the brush feed wires to monitor clutch current.
The rated current applied to the coil in the clutch is divided into three steps, determined by how far the accelerator pedal is depressed, and road speed.
Accelerator pedal released......................................................................................................................................................................................0.4-1.8 A *
Accelerator pedal pressed lightly.................................................................................................................................................................................3.0 A **
Accelerator pedal pressed heavily...........................................................................................................................................................................3.51 A ***
*
Above preset road speed.
** Only accelerator switch operated and above preset road speed.
***Accelerator switch and throttle position switch operated, above preset road speed.
If you are bench checking the powder clutch it should hold 105 ft/lbs of torque when 3.5 amps is induced into the coil.
HANDLING PRECAUTIONS
1.
Do not turn the powder clutch over. Always store it with the hub up or the powder may spill out of the opening.
2.
Do not scratch or dent the slip rings.
3.
Do not attempt to dis-assemble the powder clutch. No internal parts are serviceable. The powder clutch is serviced as an assembly only.
4.
Do not steam clean or wash the powder clutch in a solvent tank as this will contaminate the powder inside.
5.
Do not remove the drive plate from the engine as it is properly balanced with the flywheel.
BELT HANDLING PRECAUTIONS
