Repairing the manual transmission on a Kobelco SK70SR-1E involves a detailed understanding of the machine’s components and the tools required for the job. click here for more details on the download manual…..
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Below are key points outlining the process and the necessary tools:
### Tools Required for Manual Transmission Repair
– **Wrenches and Sockets:**
– **Combination Wrench Set:** Used for various nut and bolt sizes. Ensure you have both metric and standard sizes.
– **Socket Set:** A complete socket set (including deep sockets) will allow you to reach bolts in tight spaces.
– **Screwdrivers:**
– **Flathead and Phillips Screwdrivers:** Essential for removing screws on covers and panels.
– **Pliers:**
– **Needle-Nose Pliers:** Useful for gripping small components or pulling out clips.
– **Channel Lock Pliers:** For larger components or to grip rounded nuts.
– **Torque Wrench:**
– Ensures that bolts are tightened to the manufacturer’s specifications, preventing over-tightening or under-tightening.
– **Jack and Jack Stands:**
– **Hydraulic Floor Jack:** To lift the machine safely.
– **Jack Stands:** For added safety while the machine is elevated.
– **Fluid Transfer Pump:**
– For draining and refilling transmission fluid, as manual transmission systems require specific fluid levels.
– **Magnetic Pickup Tool:**
– Handy for retrieving dropped nuts or bolts in hard-to-reach areas.
– **Cleaning Supplies:**
– **Degreaser:** For cleaning components before reassembly.
– **Rags and Brushes:** To wipe down parts and remove debris.
– **Gasket Maker or Gaskets:**
– For sealing covers and preventing fluid leaks after reassembly.
– **Service Manual:**
– A specific manual for the Kobelco SK70SR-1E will provide torque specs, diagrams, and detailed instructions.
### Steps for Manual Transmission Repair
– **Safety First:**
– Ensure the machine is turned off, parked on a level surface, and the parking brake is engaged.
– Use proper personal protective equipment (PPE) such as gloves and safety glasses.
– **Access the Transmission:**
– Use the hydraulic jack to lift the machine.
– Secure it with jack stands to prevent accidents.
– **Drain the Transmission Fluid:**
– Locate the drain plug on the transmission and use a fluid transfer pump or pan to collect the old fluid.
– **Remove the Transmission:**
– Disconnect any electrical connections or linkages connected to the transmission.
– Use the appropriate wrenches and sockets to remove the bolts holding the transmission to the engine and chassis.
– **Disassemble the Transmission:**
– Carefully take apart the transmission casing using screwdrivers and wrenches.
– Note the arrangement of components for easier reassembly.
– Inspect gears, bearings, and synchros for wear or damage.
– **Replace Worn Components:**
– Identify any damaged or worn parts that need replacement. Replace gears, bearings, or seals as necessary.
– **Clean Components:**
– Thoroughly clean all parts using degreaser and brushes. Ensure all old gasket material is removed.
– **Reassemble the Transmission:**
– Apply gasket maker or install new gaskets where needed.
– Follow the reverse order of disassembly. Ensure all components are properly aligned
and seated.
– **Reattach the Transmission:**
– lift the transmission back into place and secure it with bolts. Use a torque wrench to tighten bolts to the manufacturer’s specifications.
– **Refill Transmission Fluid:**
– Use the fluid transfer pump to refill the transmission with the appropriate type and amount of fluid.
– **Reconnect electrical and Linkages:**
– Reattach any electrical connections and linkages that were removed during disassembly.
– **Test the Repair:**
– Start the machine and run it through gears while monitoring for any unusual noises or leaks.
– Take the machine for a test drive to ensure proper operation.
– **Final Check:**
– After a brief operation, check the transmission fluid level and top off if necessary.
– Inspect for any leaks around the transmission and ensure all bolts are secure.
### Conclusion
Repairing the manual transmission on a Kobelco SK70SR-1E requires a combination of the right tools, a methodical approach, and attention to detail. Always refer to the service manual for specific Instructions and torque specifications to ensure a successful repair.
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