Model 6210 Maintenance Manual
Section 7. Component Procedures
Electrical Components
Traction Amplifier Removal 1. If equipped with the optional keypad, press the red OFF ( O ) key. Place the Main ON/OFF Switch in the OFF position. Disconnect the battery connector from the truck. 2. Remove the tractor covers. 3. Discharge the capacitors in the traction amplifier by connecting a load (such as a contactor coil or a horn) across the amplifier’s TA B+ and TA B– terminals. 4. Push the locking tab and disconnect the J1 connector from the traction amplifier. See Figure 7-64. 5. Disconnect the power cables (terminals TA B+ and TA B–) on the traction amplifier. Do not stress the power cable connections. Disconnect the traction motor cables (terminals U, V, and W) at the traction amplifier. 6. Remove the screws securing the traction amplifier to the electrical panel. Remove the traction amplifier.
Traction Amplifier
Traction Amplifier Installation NOTE: All traction amplifiers are preset to factory default specifications. 1. Secure the traction amplifier to the electrical panel with the previously removed hex head cap screws. Torque screws to 11 ft. lbs. (14.9 Nm). 2. Connect the power cables (terminals TA B+ and TA B–) on the traction amplifier. Torque screws to 80 to 100 in. lb. (9.1 to 11.3 Nm) maximum. Do not stress the cable connections and put strain on internal components. 3. Connect the J1 connector and traction motor connectors (terminals U, V, and W) to the traction amplifier. 4. Connect the battery connector. 5. Place the Main ON/OFF Switch in the ON position. If equipped with the optional keypad, enter your PIN-key code and then press the green ON ( | ) key. 6. Test operation of the truck. 7. If equipped with the optional keypad, press the red OFF ( O ) key. Place the Main ON/OFF Switch in the OFF position. 8. Install the tractor covers.
Publication: 1146947, Revised: 12 Jan 2017
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