KaVo GENTLEsilence LUX 6500B Repair Procedure

KaVo GENTLEsilence LUX 6500B – PB (Pushbutton )Repair ProcedureTools needed to properly repair this handpiece:1. Kavo Coupler2. 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 shouldnow start seeing them out of Manufacturers warranty. Lube is required on thishandpiece.STEP 1Try 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 feelhow 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 speedand for a smooth rundown. Check the water spray – it should be a fine mist. Attempt tocut a shell to test the torque. Disassemble the handpiece following the instructionsbelow.DISASSEMBLYSTEP 2Using the Kavo PB back cap removal tool (10129), twist in acounterclockwise direction to unscrew the back cap and remove theturbine assembly.TIP: Sometimes the cap is very tight. Be very careful not to let the tool slip and strip orscratch the back cap.STEP 3Place the turbine in yourworkblock. As pictured, be sureto insert the rear bearing of theassembly into the hole justabove and to the right of Hole#2. This hole allows the bearingto fit in nicely while providinggood support for the impeller. Don’t worry about the fragile impeller, on the OEM KaVo6500 turbine, we must replace it any way.