komatsu excavator guide

how to change controls on a komatsu 138lc

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The best komatsu excavator what to look for in a used komatsu loaders should be maintained and repaired by the company you bought it from or a local dealer who has contact with the company.

Komatsu 138LC-Shut off the komatsu 138lc excavator motor, and set the parking brake.

If you’re familiar with excavators, then you know that they need a lot of power. They can run for hours without stopping, which is great for the operator but not so great for the machine.

The komatsu 138lc excavator has a powerful engine, but it also needs to be protected from catastrophic failure in case something goes wrong. This is where a parking brake comes in handy.

A parking brake is nothing more than a lever connected to the wheels of the excavator. By pulling the lever back, you apply the brakes and stop the vehicle. If you push forward on the lever, you release the brakes and allow the vehicle to move forward again. The parking brake can also be used to turn or maneuver your excavator if necessary (although it wouldn’t really be necessary in an emergency).

You have to have a few terms down pat on this one. “Komatsu” is the brand, and “138lc” is the model number. Now that you’ve got that terminology out of the way, let’s move on to the next part.

As with any piece of machinery, when you shut off a piece of equipment, lock it in place. A locked machine won’t roll away and can’t start up by accident. You don’t want it rolling into your group’s camp and starting an avalanche or worse.

Komatsu 138LC-6

Komatsu 138LC-6-Climb out of the cab and remove the long bolt that attaches the seat to the cab floor.

Climb out of the cab and remove the long bolt that attaches the seat to the cab floor. Remove the bolts from the bottom of the seat bracket and set the seat aside. If your seat has an air suspension, disconnect the air line from the driver’s side of the cab. On some models, this will require using a wrench to loosen a fitting. Remove all bolts from around the steering column.

If you have a tilt steering column, pull up on it until it locks into place and you can see all of its attachment points. If you don’t have tilt steering, use a screwdriver to loosen and remove the top panel on your dashboard.

Remove any bolts that attach your steering column to your instrument panel or dashboard. Disconnect any electrical connectors leading to your steering column and remove it from your truck.

komatsu 138lc excavator

Komatsu 138LC-Pull the seat out of the cab, disconnecting it.

Pull the seat out of the cab, disconnecting it.

With a flat-blade screwdriver, release the lever on the left side of the seat to unlock it and push it forward.

Disconnect the electrical harness on the right side of the seat by pressing down on the connector tab and pulling it apart.

With a socket wrench and a 6-mm socket, remove the four bolts attaching the bottom of the seat to the floorboard. The two front bolts are covered by plastic caps that can be pried up with a screwdriver.

The top of each rear corner of the seat is held in place by a spring clip that needs to be released in order to pull out the front edge of each side of the seat. With your fingers, pinch one end of each clip and pull up until it releases from its hole on each side.

Pull forward on both sides of the seat at once to release it from its holes in back and lift out of cab.

Komatsu 138LC-Remove the cover plate on either side of the control levers with a screwdriver.

Remove the cover plate on either side of the control levers with a screwdriver.

Remove the Phillips head screws from behind the cover plate.

Lift the control lever off of the handlebar and remove it from the cover plate. Pull out the small rubber “O” ring that is inside of the control lever to prevent water damage.

Locate the two screws on either side of the throttle grip at its base. Remove these screws with a Philips head screwdriver or an Allen wrench, depending on which type of screw is present.

Unscrew and remove the throttle cable from its housing at the base of the throttle grip.

Pull off the throttle grip and discard it in favor of your new grip.

Slide your new throttle grip over the end of your handlebar, making sure to pull through any wires or cables that may be in your way. Screw your new throttle cable into place at the base of your new throttle grip, just as you pulled off your old one.

Komatsu 138LC-6-Pull out wiring harnesses from within the control levers.

Step 1

Pull out wiring harnesses from within the control levers.

Step 2

Remove screws from each side of the control housing using a Phillips head screwdriver. Pull each half of the housing away from the other half to expose the throttle tube and switches.

Step 3

Remove the switch caps. Remove screws on each side of the switch housings. Pull off both switch housings to expose each set of wires. If a motorcycle’s switches are not attached to a housing, they can be removed by unscrewing them with a Phillips head screwdriver or Allen wrench (depending on your bike’s model).

Step 4

Label or mark each wire before disconnecting it. The two sets of wires in a control lever include a three-wire set for the brake light switch and a five-wire set for the horn, left turn signal, right turn signal, engine start button and high beam indicator.

Komatsu 138LC-6-Remove four bolts from each control lever with an Allen wrench. Place bolts in a safe place.

Remove four bolts from each control lever with an Allen wrench. Place bolts in a safe place.

Remove push pins securing the clutch control cable to the engine housing, and disconnect the cable. Repeat this step on the brake control cable, if applicable.

Komatsu 138LC-6-Unhook cable from each control lever and pull out of lever by hand.

Unhook cable from each control lever and pull out of lever by hand.

If you can’t remove the cables easily by hand, you can use a pair of pliers. Just be careful not to damage the cable casing when removing it. To get the cable out of the housing, push it through from the other side.

Take a pair of wire cutters or a hacksaw and cut both brake cables off close to where the ferrules are attached. If you want to save your old brake cables for future use, leave about an inch or two of wire on them. You’ll need to cut away some of the plastic casings that hold the brakes in place so you can pull them free from the frame. These are usually held in place with glue or zip ties.

Komatsu 138LC-6-It is possible to change controls on a komatsu 138lc excavator if you have some instructions on how to do it.

It is possible to change controls on a komatsu 138lc excavator if you have some instructions on how to do it.

You can also put backhoe attachments on the machine and do excavation work as long as you have the backhoe bucket with you.

We would be happy to help you with your backhoe if you would like to send us some pictures of your machine and we will tell you if it is worth repairing or not.

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