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Cush Drive Rebuild
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Tools Used:
- Drill Press
- Safety Glasses
- Ball Peen Hammer
- Rubber Hammer
- Flat Head Screwdriver
- Pick tool
- Small Punch
- Center Punch
- Pliers
- Circlip Pliers
- Channel Locks
- Vice
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- To test the Cush Drive shake it
- If it makes noise the Springs inside are broken
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- This step will happen when you take the Cush Drive out of the motor,
this is for demonstration purposes only - Push the threaded side of the Cush Drive Spindle
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- With you other hand catch the Roller Bearings
- Inspect the roller bearings. There should be 21 to 24 depending on your model.
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- SET the Cush on the vice DO NOT tighten it
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- Pull the Circlip that retains the bearing
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- With a Rubber Hammer gently tap the Cush Drive Spindle
- Make sure the vice is open larger than the bearing on the other side
- This will push the bearing out
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- SET the Bearing and Spindle on the vice
- DON'T TIGHTEN
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- Tap the Spindle and it will come free from the Bearing
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- Now you are going to drill out the Rivets
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- With a Center Punch tap each rivet
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- You are making a guide for the drill bit to go directly into the center of the rivet
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- To start drill off the heads of the (6) rivets (7/32 drill bit)
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- Now you can see the springs
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- Pull them out with your small screwdriver
- If they are broken they should just fall out
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- Drill out the center of the rivets (5/32 drill bit)
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- Be Careful it is very easy to break the bit
- Drill slowly
- The rivet is softer than the gear you will be able to hear when you are drilling into the gears if this happens stop and reposition it
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- Clean EVERYHING
- BLOW off all the metal shavings
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- Put the 2 gears back together
- BE CAREFUL you can put it together upside down
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- This is what it should look like (no lip)
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- To install the NEW Springs compress them with the Cahnnel Locks and tap them with your hammer
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- This is what it should look like when you are done
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- Install the NEW Back Plate
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- Install the NEW Top Plate
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- To lock them in I like to use a vice to get them started
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- Set the back part of the Rivet against the vice and peen the rivets with you ball peen hammer.
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- A little bit of Grease will help the bearing go in
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- Use a Large socket to tap it in
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- Note: This step will actually happen when you install the drive into the motor but Ill show you now for demonstration purposes.
- Grease the bearing race
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- Now the bearings will stick to your finger
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