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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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