How to Convert a Final Drive by Changing the Swash Plate

How to Convert a Final Drive by Changing the Swash Plate

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A final drive is a complex part whose internal parts are all designed to work seamlessly together to match exacting specifications and work within distinct measures of performance. While the final drives on most machines share the basics of how they work and how they function, even the slightest differences in their internal parts — from the size of a reduction gear to the slope of a swash plate — can greatly alter how the final drive performs.

At H&R, our final drives are designed, built, and (often) updated to match the expected performance profile of the machines on which they’ll be mounted. The added step of updating a final drive ensures the final drive will work perfectly with the machine. During the update process, H&R technicians will routinely change either the swash plates inside the final drive or the reduction gears inside the final drive. These changes will alter the speed of the final drive to ensure it meets the specifications dictated by the machine.

In addition to performance adjustments, H&R technicians routinely add fittings, elbows, and hoses to ensure a final drive fits perfectly into a machine without other adjustments for fitment. An H&R final drive is designed to get you back to work with no time-consuming modifications or additional trips to the hydraulic shop — straight from the pallet and onto your machine with no extra work.

Watch the video below to see an H&R technician update a final drive by changing out the internal swash plate.



Steps To Update Final Drive By Changing Swash Plate

  • Final drives are capable of working at different speeds. Updating the final drive ensures final drives from H&R match the required performance specifications of the machine in which they will be installed.
  • The motor valve at the top of the final drive is removed.
  • The brake piston is removed by directing air pressure into the center of the final drive.
  • The clutches, cylinder block, and pistons are removed from the interior of the final drive.
  • The swash plate is removed and then replaced with a new swash plate that will change the speed at which the final drive operates.
    • The new swash is made at a different angle changing the speed of the final drive.
    • This ensures the base final drive is compatible with a customer’s machine.
  • The pistons and cylinder block are placed back into the final drive.
  • The clutches and brake piston are adjusted on to the final drive.
  • The motor valve is placed onto the top of the final drive.
  • The final drive is tested at two speeds to ensure it is in working condition.

At H&R we understand that when a final drive fails it can leave a machine down, a worksite waiting, and a project left on pause. That’s one of the reasons we take pride in getting our customers a part quickly and why we take every step to ensure their replacement part is the solution that will get them back up and running as fast as possible.

If you’re in search of a replacement final drive, our Parts Specialists are here to help. As a top supplier of aftermarket final drives with a deep inventory and fast, smart search capabilities, we’re here to show you our commitment to straightforward simplicity from search to delivery to final installation. Just give us a call.