Repairing the automatic clutch on a KUBOTA B26 Tractor Loader Backhoe involves several steps and requires a good understanding of the machinery, as well as specific tools and parts. click here for more details on the download manual…..
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Below, I’ll outline an overview of the procedure and describe the components involved.
### Important Safety Precautions
1. **Disconnect the Battery**: Always start by disconnecting the battery to prevent any electrical shorts or accidental starts.
2. **Wear Safety Gear**: Use safety glasses, gloves, and steel-toed boots to protect yourself during the repair.
### Tools and Equipment Needed
– **Basic Hand Tools**: Wrenches, sockets, screwdrivers, etc.
– **Torque Wrench**: To ensure bolts are tightened to the manufacturer’s specifications.
– **Pliers and Cutters**: For removing clips and retaining rings.
– **Jack and Stands**: To safely lift the backhoe if needed.
– **Service Manual**: A KUBOTA B26 manual for reference to specifications and diagrams.
### Components of the Automatic Clutch
1. **Clutch Disc**: The friction material that engages and disengages the power from the engine to the transmission.
2. **Pressure Plate**: Applies pressure to the clutch disc to keep it engaged.
3. **Flywheel**: Mounted on the engine crankshaft, it provides a surface for the clutch disc to engage.
4. **Release Bearing**: Allows the clutch pedal to disengage the clutch when pressed.
5. **Clutch Fork**: Transfers the motion from the clutch pedal to the release bearing.
6. **Hydraulic Cylinder**: Acts to activate the clutch through hydraulic pressure.
7. **Clutch Housing/Cover**: Protects the internal components and houses the clutch assembly.
### Steps for Automatic Clutch Repair
#### 1. **Access the Clutch**
– **Remove the Engine Cover**: To access the clutch assembly, you may need to remove the engine cover using appropriate tools.
– **Disconnect the Hydraulic Lines**: If the clutch is hydraulic, disconnect the lines carefully to avoid fluid spills.
#### 2. **Remove the Clutch Assembly**
– **Unfasten the Pressure Plate Bolts**: Use the socket wrench to remove the bolts securing the pressure plate to the flywheel.
– **Take Off the Pressure Plate**: Carefully lift off the pressure plate and inspect it for wear or damage.
– **Remove the Clutch Disc**: Slide the clutch disc off the flywheel
and inspect it for wear. If it is worn down, it needs to be replaced.
#### 3. **Inspect Components**
– **Check the Flywheel**: Inspect the surface of the flywheel for any signs of scoring, cracks, or uneven wear. Resurfacing might be necessary.
– **Examine the Release bearing and Fork**: Check for wear or damage. Replace if necessary.
#### 4. **Install New Components**
– **Install the New Clutch Disc**: Align the new clutch disc with the flywheel. Ensure the splines engage correctly.
– **Place the Pressure Plate**: Align the pressure plate over the clutch disc and secure it by tightening the bolts in a crisscross pattern to ensure even pressure.
#### 5. **Reassemble the Clutch**
– **Reattach the Release bearing and Fork**: Ensure they are properly aligned and function smoothly.
– **Reconnect Hydraulic Lines**: If applicable, reconnect the hydraulic lines securely.
#### 6. **Final Assembly**
– **Replace the Engine Cover**: Securely fasten the engine cover back in place.
– **Reconnect the Battery**: Reconnect the battery terminals.
#### 7. **Test the Repair**
– **Start the Engine**: Start the tractor and test the clutch operation.
– **Check for Leaks**: If you disconnected hydraulic lines, check for any leaks.
### Conclusion
Repairing the automatic clutch on a KUBOTA B26 involves detailed steps and careful attention to the components involved. Always refer to the specific service manual for torque specifications and detailed diagrams specific to your model. If you’re uncertain or uncomfortable with any part of the repair, it’s wise to consult a professional mechanic.