Power Module; Removal - JLG TOUCAN 8E Service And Maintenance Manual

SECTION 8 - CONTROL COMPONENTS

8.4 POWER MODULE

The power modules are located at the rear of the chassis
between the driving wheels. The master module is
mounted on the right side of the chassis and the slave
module on the left side.
The master power module controls the right drive motor
and the hydraulic pump motor.
The slave power module controls the left drive motor.
Both power modules are identical and share the same
software. The master or slave condition of the power mod-
ules is defined by the wiring of the inputs: on the master
module, the connector pin #6 is energized at power-up.
Figure 8-24. Power Module Removal - Installation
8-16

Removal

PRIOR TO ANY SERVICING OPERATION ON POWER MODULES,
DISCONNECT BATTERY PLUG.
AFTER MACHINE OPERATION, EVEN WITH THE POWER TURNED
OFF AND THE BATTERY DISCONNECTED, INTERNAL CAPACI-
TORS OF THE POWER MODULES MAY REMAIN CHARGED FOR
SOME TIMES. REFER TO THE FOLLOWING PROCEDURE TO DIS-
CHARGE THOSE CAPACITORS.
1. From ground controls, swing the turntable 90° from
chassis center line. Shut machine down and discon-
nect battery plug.
2. Actuate the battery filling pump button: the pump
will run for a few seconds till the capacitors are dis-
charged.
3. Remove chassis covers and rear chassis shield.
4. Disconnect AMP connector from the power module:
Refer to Section 11.
5. Tag and disconnect power cables from the power
module.
6. Loosen the nut (1) securing the chassis cover
bracket (2).
7. Remove the four screws securing the power mod-
ule. Use a ratchet wrench with appropriate exten-
sions and a universal joint (3) to remove the bottom
screws. Remove the power module.
– JLG Lift – 31210090