Komatsu Loader-3 Combination Switch(Transmission Switch)(old version)

attention:

The electronic circuit of Komatsu Loader-3 Combination Switch is designed and built in 2 old and new versions, which are completely similar in terms of performance.

But some of the circuit parts are different

The easiest way to identify the old and new circuit is the presence of 2 brick resistors on the circuit of the old version

If these resistors do not exist in the circuit of the new version

The presence of these 2 resistors on the circuit of the old version and its absence on the circuit of the new version can be easily seen with the eye

To see the new version of this circuit, click on the link below:

 Komatsu-3 Loaders Combination Switch(Transmission Switch ; new version)

 Transmission Switch for models:

Komatsu Wheel Loader WA120-3

Komatsu Wheel Loader WA150-3

Komatsu Wheel Loader WA180-3

Komatsu Wheel Loader WA200-3

Komatsu Wheel Loader WA250-3

Komatsu Wheel Loader WA320-3

Komatsu Wheel Loader WA380-3

Komatsu Wheel Loader WA470-3

Komatsu Wheel Loader WA480-3

Komatsu Wheel Loader WA500-3

Komatsu Wheel Loader WA600-3

Part numbers:

417-43-26120

417-43-26121

417-43-26122

Electronic circuit specifications:

For the first time in the world

Photo and real color of the parts in the circuit.

The actual location of the parts on the circuit corresponds to the board.

very high quality circuit.

Designed for easy and convenient repairs.

Full specification of parts and data sheet of each part.

The technical number of the parts and the location number of the parts on the board.

Using different colors to draw the routes on the circuit to distinguish between the routes and as a result, easier and faster repairs.

Very easy and fast repairs due to the use of the circuit.

Specifications of input and output bases of the board (connectors).

Accurate and transparent design.

The numbers of parts bases and their functions

Separation of main routes such as negative voltage (ground) and positive supply voltages (24 V, 5 V, 3.3 V, etc.)

The actual size of the pcb parts with range.

Description of the piece of work if necessary.

Connecting the circuit with other parts and circuits (if necessary).

Identifying the location of non-electrical parts such as heat sinks and display bodies.

Knowing the size of the pcb and the exact shape of the pcb and the location of the screws on the pcb.

Schematic clarity of diodes and transistors.

Comprehensibility of circuit lines and routes.

Internal circuit of the modules on the board (if any).

Writing the numbers of similar parts in cases where the original part is missing or hard to find.

The purpose of preparing these circuits is quick and easy repairs of electronic circuits of road construction machines.

The utmost care has been used in the production and design of these circuits so that quick and easy repairs can be made

The location of the parts on these circuits is in accordance with the actual location of the parts on the pcb board, which makes repairs simple

The technical specifications of each part in the circuit are specified, which leads to a better understanding of the working principles of the parts and the circuit, and helps a lot in troubleshooting the circuit.