C - 5 Required A djustment aft er AML System Part Replacement

[NOTICE]

 The adjustment value for each model is stored in the flash memory. When replacing the CPU board, read out the flash memory data from the malfunctioning CPU board to the PC, and write the data to the flash memory of new CPU board again. In that way, the adjustment works other than the clock adjustment become unnecessary. However, always check visually that the numerical value indications, such as boom length and boom angle, as well as the symbol indication that are shown on the AML display unit agree with the actual status.

Name of part to be replaced

Outrigger extension length detector

Slewing angle detector

Boom length detector

Adjustment item required to be performed

Outrigger extension length detector adjustment

Slewing angle detector adjustment

Boom length detector adjustment

Detector

AML control unit

Boom angle detector

Pressure sensor for moment detection

DISP board CPU board

When data can be read by computer for maintenance 1)

When data cannot be read by computer for maintenance 1)

CON1 board CON2 board

Proportional sol. valve for slewing control

Proportional solenoid valve

Proportional sol. valve for elevation control

Boom angle detector adjustment

Moment and load radius adjustment

Clock adjustment

Perform all the detector adjustments and valve output adjustment.

Perform all the detector adjustments.

Valve output adjustment for slewing

Valve output adjustment for elevating

1): Refer to "Data Readout/Rewriting with Maintenance Tool"

(Can be found in service section of TADANO INTRANET in Japan only)

For the adjustment work, refer to Chapter D, Adjustment Mode.

C - 6 Disassembly and Assembly [NOTICE]

 Before mounting or dismounting the AML, be sure to turn OFF the starter switch of the crane.

 During the disassembly and assembly, do not touch the front or back surface of the board directly by hands. (Prevent static electricity)

 Securely connect the connector while paying attention to avoiding adhesion of water, dust, exposure of ultraviolet rays and static electricity.

6.1 Disassembly of AML main unit

1. Remove the pan head screws (a) (10 positions), and slightly open the upper case from the lower case.

3. With the upper case, remove the board fixing pan head screws, and remove the display board and CPU board together.

4. With the lower case, remove the board fixing pan head screws, and remove the CON1 board and CON2 board together.

2. Remove the flat cable, and remove the upper case from the lower case.

6 2 Replacing the clock battery

[NOTICE]

 When the clock battery is worn out, the adjustment values, error codes and driving history cannot be backed up (saving data at power OFF). Also, when the error code or overload history is recorded in the AML, an accurate date and time cannot be recorded

 One built-in clock batteries is on CPU board. Battery type: CR2450

 When removing the battery, remove while holding the battery upper (positive side) because the battery may pop up.

The built-in clock battery longevity is usually about 10 years.

If the built-in clock batteries are wasted, replace them according to the following procedures.

(Procedure)

1. Remove the upper case (CPU board) from the AML main unit.

2. Remove the battery from the battery holder on CPU board (press the protrusion indicated by an arrow).

3. Install a new battery to the CPU board. The battery positive side must be faced up.

4. Mount the upper case (CPU board) to the AML main unit.

Press the protrusion