KaVo GENTLEsilence LUX 6500B Manual

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.

STEP 4
Next, we must carefully press the Good OEM Spindle
out of the bearings. DO NOT ATTEMPT to BREAK
the BEARINGS. We are using a different technique
on the KaVo 6500. With the 00024R Round punch
perfectly aligned over the spindle, carefully press the
spindle down out of the top bearing and impeller.
STEP 5
You will now be left with the items
pictured (from left); The Flanged
Spindle, The bearing/impeller set,
and the front thrust washer. You
will re-use the Spindle and Washer
but the bearing/impeller set is junk.
Picture
Number Part Number Description
1 10106
10106S O-Ring O-Ring (Sable brand)
2 10216 KaVo 6000/6500 Spring Washer Kit
3 40405CM Myonic Straight Bearing
4 OEM KaVo 6500 Flanged Spindle
5 10116TI After-Market KaVo 6500B Impeller
6 10101ANG KaVo Bearing
7 10116TS KaVo 6500B Front Slinger Washer

Assembly for OEM Spindle Only
STEP 1
Now the re-assembly process will begin. First,
place a 40405CM bearing, with the shield side UP,
into Hole #2 on your work block. Next, using your
Auto-Chuck Protector Punch (00024A), carefully
press the spindle down into the bearing until the
flange on the end of the spindle touches the
bearing.
You should now line up your new
assembly as pictured at left. Spindle with
bearing, Impeller, Front Bearing and
Slinger Washer
STEP 2
Place the 10116TI Impeller, with the beveled side Down, over Hole
#1 on your work block. Then insert the open end of your Spindle
into the center hole on the impeller. Using your Auto-Chuck
Protector Punch (00024A), carefully and slowly press the Spindle
into the Impeller until the Bearing touches the Impeller.
STEP 3
Place your 10101ANG Bearing, shield side Down, into Hole #2 on
your workblock. Next, insert your Spindle/Bearing/Impeller
assembly into the bearing. Using your Auto-Chuck Protector
Punch (00024A), carefully press the Spindle into the bearing.

STEP 4
With the main turbine assembly now assembled, place the
10116TS front thrust washer onto the front end of the spindle.
Next, place the front end of the assembly into Hole #2 in your work
block. This will center the turbine and should allow you to slowly
and carefully press the turbine assembly into the thrust washer.
STEP 5
Your completed turbine assembly should look like the picture at
left. First, install the new o-rings into the head and back cap.
When inserting the turbine into the handpiece, please remember,
the Small 10216 Wavy-Washer goes down in the head of the
6500B while the Larger 10216 Wavy-Washer goes in the Back
Cap.
Assembly for After-Market Spindle
Only
Picture
Number Part Number Description
1 10106
10106S O-Ring O-Ring (Sable brand)
2 10216 KaVo 6000/6500 Spring Washer Kit
3 40405CM Myonic Straight Bearing
4 10116T-A
10116T-S After-Market KaVo 6500 Spindle/Impeller Combo Sable KaVo 6500B Balanced Spindle/Chuck Combo
5 10101ANG KaVo Bearing
6 10116TS KaVo 6500B Front Thrust Washer

STEP 1
Place your 10101ANG KaVo bearing, Shield Side
DOWN, into Hole #2 on your work block. Then, place
the open end of your 10116T KaVo 6500B Spindle
into the Bearing. Using your Auto-Chuck Protector
Punch, carefully press the spindle into the bearing
until the impeller and bearing make contact.
STEP 2
Now, place the 40405CM bearing, Shield Side DOWN, into
Hole #2 on your work block. Then, place the button end of
the spindle in the bearing. Using your Auto-Chuck
Protector Punch, carefully press the spindle into the
bearing until the impeller and bearing make contact.
STEP 3
Now, place the 10116TI Thrust Washer onto
the open end of the spindle. Next, place the
assembly down into Hole #2 in your work
block to properly align the turbine over the
washer. Lastly, carefully press the turbine
into the Thrust Washer until the Bearing and
Washer touch.
STEP 4
Your completed turbine assembly should look like the
picture at left. First, install the new o-rings into the head
and back cap. When inserting the turbine into the
handpiece, please remember, the Small 10216 Wavy-
Washer goes down in the head of the 6500B while the
Larger 10216 Wavy-Washer goes in the Back Cap.