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STEP 4 

Now that the drive plate and wide drive rings have been removed, place 
a 3/16” collet into the collet holder.  Insert the spindle halfway above 
the fork, into the collet.  Once the collet is tightened, use a flat head 
screwdriver to unscrew the spindle bolt.  Then pull the various pieces 
apart and place on your work surface. 

 
 
 

STEP 5 

You can now place the nosepiece in a 13/32” collet.  Unscrew the sheath 
housing from it while simultaneously depressing the latch.  This will 
keep the flange on the nosepiece from being caught up. 
 
  

 

STEP 6 (Only perform this step if the latch is damaged)  

If you need to replace the latch on the sheath housing, place it over two 
v-blocks.  Hold a small punch or pin with a set of tweezers over one end 
of the pin in the housing.  Gently tap the pin out of the housing and 

remove the latch and spring.  The replacement latch kit is part# 40503.  

 

 

STEP 7 (Only perform this step if necessary) 

To remove the dog pins (40459) from the drive 
plate, place the plate into the crows foot shaped 
hole on your block (far left pic).  Then use a thin 
punch to drive the pins out of the holes.  To remove 
any of the bushing posts, place the plate upside 

down over Hole #6 in your block (above right picture).  Again 
use a thin punch to drive the post(s) out of the drive plate.  To 
the left is a picture of the bushing and bushing post disassembled 
from the drive plate. 
 

 

STEP 8 (Perform this step only if bearing is broken) 

If the small 40435 bearings on the drive ring spindle are damaged, 
they must be replaced.  Accomplish this repair by placing the 
damaged bearing upside down in one of the holes on your block as 
shown in the picture at left.  Place a thin punch over the back of the 

bearing post and tap it out.  The disassembled bearing post should 
contain the 40435 bearing, and a brass 40453 spacer washer as 
shown.  
 

 
The nose portion disassembly should now be complete.  Line up your parts like that 
shown in the picture on the following page.  All of these parts are replaceable and all can 
be ultrasonically cleaned. 
 
 

Summary of Contents for Shorty

Page 1: ...e spindle lock button as shown Then wrap a strip of rubber around the speed change collar and motor housing and unscrew All the threads on this handpiece are regular thread so turn counterclockwise to...

Page 2: ...sary To remove the dog pins 40459 from the drive plate place the plate into the crows foot shaped hole on your block far left pic Then use a thin punch to drive the pins out of the holes To remove any...

Page 3: ...e Drive Ring Spindle 8 40437 Wide Drive Rings 9 40449 Main Spindle 10 40432 Main Spindle Bearing 11 40464 Thrust Washer 12 40464B Metal Shim 13 40448 Loading Springs Sub Assembly B Disassembly Motor H...

Page 4: ...ress the spindle and tool through the raceway STEP 12 Now turn the partially disassembled raceway over see picture The front motor bearing must be removed from the raceway Use your Lares assembly tool...

Page 5: ...shown Using the same Lares punch press the spindle into the impeller STEP 16 If you did not replace the rear o ring in STEP 10 do so now Then reinstall the vent plug STEP 17 Place the rear turbine bea...

Page 6: ...lutch assembly horizontally and opposite each other far left Press them together and hold tightly while screwing the spindle bolt into the spindle as shown near left STEP 24 Insert the spindle half wa...

Page 7: ...ge of the clutch housing Now mesh the two drive plate bearings into the two narrow drive rings in the motor housing Once these are correctly aligned begin to thread the two halves together Be sure not...

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