KaVo GENTLEsilence LUX 6500B – PB (Pushbutton)
Repair Procedure
Tools needed to properly repair this handpiece:
1. Kavo Coupler
2. Kavo Back Cap Removal Tool (10129)
3. Auto-Chuck Protector Punch (00024A)
4. Round Tip Punch (00024R)
The KaVo 6500B is a relatively new handpiece. It came out in 2005 and you should
now start seeing them out of Manufacturers warranty. Lube is required on this
handpiece.
STEP 1
Try to determine the problem before opening the handpiece. Insert a high speed bur,
checking that it inserts smoothly and tightens securely. Twist the bur manually to feel
how smoothly it turns. Attach it to your KaVo coupler and run the handpiece (if you can).
Check that air pressure is at 40-45 p.s.i.. Listen for the appropriate pitch at full speed
and for a smooth rundown. Check the water spray – it should be a fine mist. Attempt to
cut a shell to test the torque. Disassemble the handpiece following the instructions
below.
DISASSEMBLY
STEP 2
Using the Kavo PB back cap removal tool (10129), twist in a
counterclockwise direction to unscrew the back cap and remove the
turbine assembly.
TIP: Sometimes the cap is very tight. Be very careful not to let the tool slip and strip or
scratch the back cap.
STEP 3
Place the turbine in your
workblock. As pictured, be sure
to insert the rear bearing of the
assembly into the hole just
above and to the right of Hole
#2. This hole allows the bearing
to fit in nicely while providing
good support for the impeller. Don’t worry about the fragile impeller, on the OEM KaVo
6500 turbine, we must replace it any way.
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