Checkout and maintenance
1-23
ELECTRIC BRAKE pEDAL ADJUsTMENT
Early model JBC vPI System III balancers
• Remove the two screws securing the brake pedal assembly.
• Remove the weight tray.
• Remove the cover from the electronic box.
• Attach a vOm to each lead of the microswitch.
• Rotate either the microswitch activator or the micro switch on the brake pedal assembly until the circuit
is open.
• Check to make sure that the circuit closes when the brake pedal is depressed.
ELECTROMAgNETIC MOTOR BRAKE ADJUsTMENT
• Remove power from the balancer.
• Remove weight tray assembly.
• Losen hex set screw from the motor pulley.
• Adjust the distance between the magnetic brake and clutch plate to 0.2mm by moving the motor pulley.
• Apply power to the balancer and retest braking capability by pressing on the brake pedal.
MECHANICAL BRAKE CABLE ADJUsTMENT
• mount a standard 15” tire and wheel assembly.
• using your foot apply pressure to the foot pedal assembly.
using a 13mm wrench hold the nut located at the top of the cable as indicated on.
• using a flatblade screwdriver turn the cable counterclockwise to apply tension to the brake or clockwise
to loosen the brake.
• The cable is properly adjusted when the tire and wheel assembly has a little resistance.
MECHANICAL BRAKE CABLE
• Disconnect the power from the rear of the machine.
• Remove the Display panel.
• Remove the weight tray.
• Disconnect the brake cable from the vibratory member. make note of the location of the springs and
washers.
• Remove the two 5mm bolts holding the pedal to the frame.
• Separate the pedal from the pedal bracket.
• Pull the cable through the protective flex tubing.
• Reverse pocedures for installation.
MOTOR REMOVAL
• Disconnect the power from the rear of the machine.
• Remove the weight tray.
• Disconnect the motor wiring harness from the Power Supply box.
• Remove the setscrew securing the motor pulley to the motor.
• Remove the (4) bolts securing the motor from the vibratory system.
• Reverse procedure for installation.
• using a pry bar, pry against the motor spacers to tighten belt.
HOOD sWITCH / CAM / spRINg
(VPI SYSTEM III, IV)
• Disconnect the power from the rear of the machine.
• Remove the weight tray.
• Disconnect the Hood Switch from the Power Supply Board and remove the wiring from the connector.
• Remove the two (2) screws holding the switch to the mounting bracket.
• Remove the set screw holding the cam to the hood shaft and slide the cam off of the shaft.
NOTE: THE HOOD SPRING IS UNDER PRESSURE. TO RELEASE PRESSURE RAISE THE HOOD
TO THE OPEN POSITION.
• Remove the screw from the shaft that attaches the hood spring.
• Reverse procedures for installation.
Summary of Contents for EEWB304B
Page 1: ...WHEEL BALANCER Service Manual EEWB502B C EEWB503B EEWB304B ...
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