Download service & repair manual Komatsu 170-3 series –

Controlling arm replacement on a Komatsu 170-3 requires careful execution and the right tools. click here for more details on the download manual…..

Below are detailed steps and the tools needed for the process:

### Tools Required:
– **Socket Set**: A comprehensive socket set (including metric sizes) will be needed to remove bolts from the control arm assembly.
– **Wrench Set**: A combination of open-end and box-end wrenches for tightening and loosening nuts and bolts.
– **Torque Wrench**: For ensuring that all bolts are tightened to the manufacturer’s specifications.
– **Pry Bar**: To help in separating parts if they are stuck or difficult to remove.
– **Hammer**: A rubber mallet or dead blow hammer can be used to gently tap components without damaging them.
– **Jack and Jack Stands**: To safely lift and support the vehicle while working underneath it.
– **Pneumatic or Electric Impact Wrench**: For quickly removing stubborn bolts.
– **Suspension Tool Kit**: May include specialized tools for bushings or ball joints if applicable.
– **Safety Gear**: Gloves, safety glasses, and steel-toed boots for personal protection.
– **Grease or Lubricant**: To ease the installation of new components and prevent corrosion.

### Replacement Procedure:
– **Preparation**:
– Park the Komatsu 170-3 on a level surface.
– Engage the parking brake and turn off the ignition.
– Place wheel chocks around the wheels to prevent rolling.

– **Lifting the Vehicle**:
– Use the jack to lift the vehicle at the designated lift points.
– Secure the vehicle with jack stands to ensure it remains stable during the replacement process.

– **Removing the Wheel** (if necessary):
– If the control arm is obstructed by the wheel, remove the wheel by loosening the lug nuts with the socket set and then taking off the wheel.

– **Disconnecting Components**:
– identify and remove any components connected to the control arm, such as sway bar links or shock absorbers, using the appropriate tools.
– Using the impact wrench or socket set, remove the bolts securing the control arm to the chassis and the spindle/knuckle.

– **Removing the Old Control Arm**:
– Once all bolts are removed, gently pry the control arm away from its mounting points using a pry bar.
– Inspect the old control arm for wear or damage before discarding it.

– **Preparing for New Control Arm Installation**:
– Clean the mounting surfaces on the chassis and spindle to ensure a good fit for the new control arm.
– Apply grease or lubricant to the bolts and bushings of the new control arm for easier installation.

– **Installing the New Control Arm**:
– Position the new control arm in place and align it with the mounting holes.
– Insert the bolts and hand-tighten them to hold the control arm in position.

– **Tightening Bolts**:
– Using the torque wrench, tighten the bolts to the manufacturer’s specifications, ensuring each bolt is properly secured.
– Reattach any components that were disconnected earlier, such as sway bar links or shock absorbers.

– **Reinstalling the Wheel** (if removed):
– Place the wheel back on the hub download Komatsu 170 3 workshop manual and hand-tighten the lug nuts.
– Use the torque wrench to tighten the lug nuts to the manufacturer’s specifications.

– **Lowering the Vehicle**:
– Carefully remove the jack stands and lower the vehicle back to the ground using the jack.
– Re-check the lug nuts and ensure everything is secure.

– **Final Inspection**:
– Before operating the machine, double-check all connections and components.
– Take the vehicle for a short test drive to ensure that everything is functioning properly and that there are no unusual noises or handling issues.

### Disposal:
– Dispose of the old control arm and any other removed components according to local regulations.

By following these steps and using the appropriate tools, you can effectively replace the control arm on a Komatsu 170-3. Always refer to the specific service manual for detailed specifications and torque values related to your model.
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