Replacing the struts on a Komatsu 930E-3 dump truck is a complex task that requires mechanical expertise, proper tools, and safety precautions. click here for more details on the download manual…..
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Here’s a step-by-step guide to help you understand the process and components involved in strut replacement. Please note that this is a general overview and you should refer to the specific service manual for your vehicle for detailed specifications and procedures.
### Components Involved in Strut Replacement
1. **Strut Assembly**: This is the main component that absorbs shocks and provides support to the vehicle’s suspension.
– **Spring**: Provides initial support and absorbs road shocks.
– **Shock Absorber**: Dampens the oscillation of the spring.
– **Strut Mount**: Connects the strut to the vehicle body and allows for rotation during steering.
2. **Mounting Bolts/Nuts**: These secure the strut assembly to the vehicle frame and suspension components.
3. **Control Arms**: These connect the strut assembly to the vehicle frame and help control the wheel’s motion.
4. **Steering Knuckle**: This is where the strut assembly connects to the wheel assembly.
5. **Brake Components**: The brake caliper and rotor may need to be removed for access to the strut.
### Tools Required
– Hydraulic jack and jack stands
– Socket set (metric and standard)
– Wrench set
– Strut spring compressor
– Torque wrench
– Screwdrivers
– Pliers
– Hammer or soft mallet
– Safety glasses and gloves
### Step-by-Step Strut Replacement Process
1. **Safety Precautions**:
– Park the dump truck on a flat surface and engage the parking brake.
– Wear safety glasses and gloves to protect yourself.
2. **Lift the Vehicle**:
– Use a hydraulic jack to lift the front or rear end of the dump truck, depending on which strut you are replacing.
– Place jack stands under the vehicle to provide extra support.
3. **Remove the Wheel**:
– Use a socket wrench to remove the lug nuts and take off the wheel to access the strut assembly.
4. **Disconnect Brake Components**:
– If necessary, remove the brake caliper and rotor to gain access to the strut assembly.
– Secure the caliper using a bungee cord or other means to avoid stressing the brake line.
5. **Remove the Strut Assembly**:
– Locate the upper strut mount bolts in the engine bay or under the hood. These are typically secured with nuts.
– Remove the nuts using the appropriate socket or wrench.
– Locate the lower mounting bolts on the control arm and remove them.
– Carefully lower the strut assembly from the vehicle.
6. **Compress the Spring**:
– Use a strut spring compressor to compress the coil spring on the strut assembly.
– Ensure that the spring is securely compressed and follow the manufacturer’s instructions for using the compressor.
7. **Remove the Old Strut**:
– Once the spring is compressed, remove the top strut mount nut and take off the mount.
– Remove the coil spring from the old strut.
8. **Install the New Strut**:
– Place the coil spring onto the new strut assembly and secure it with the top mount and nut.
– Make sure everything is aligned correctly.
9. **Reinstall the Strut Assembly**:
– Position the new strut assembly back into place, securing the upper mount first.
– Reinstall the lower mounting bolts to the control arm
and tighten them to the manufacturer’s specifications.
10. **Reattach Brake Components**:
– Reinstall the brake rotor and caliper.
– Ensure that all components are securely fastened.
11. **Reinstall the Wheel**:
– Put the wheel back on and hand-tighten the lug nuts.
– Lower the truck back to the ground with the hydraulic jack and then use a torque wrench to tighten the lug nuts to the manufacturer’s specifications.
12. **Repeat for the Other Side**:
– If replacing both struts, repeat the process for the other side of the vehicle.
13. **Test the Vehicle**:
– Once both struts are replaced, perform a test drive to ensure proper operation.
– Check for any unusual noises or handling issues.
### Final Considerations
After replacing the struts, it is advisable to have the vehicle’s alignment checked and adjusted as necessary. This will help in ensuring proper handling and tire wear. Always refer to the service manual for specific torque settings and detailed procedures specific to the Komatsu 930E-3 dump truck. If you are not confident in your ability to perform this task, consult a professional mechanic.
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