After reviewing the training video and STEP-by-STEP instruction sheet, install the blank bur provided with your EZ Press. Tap the bur against the counter and try to pull it out using your fingers. If bur pulls out call ProScore for replacement spindle/collet.

Loosen head cap using appropriate cap wrench and remove turbine. If head cap and turbine come out together, separate and set head cap aside. Discard 2 o-rings and 2 loading springs.

Inspect the head and head cap for debris and clean thoroughly using a cotton swab and handpiece cleaner. If any debris is overlooked the turbine may not fit back into either the head cap or head and may bind.

Compare the bearings in your rebuild kit with the ones on your turbine. We have found differences in some models of NSK Turbines. If you notice a difference contact ProScore for support.

Place Insert B under the spindle ram.

Locate one of the 3 holes below the ProScore Label on the EZ Press II. Loosen Insert 2 and place it over the top of the turbine. Press gently down on the turbine and turn the #2 Insert clockwise until you feel it just touch the chuck. Then turn the #2 Insert slightly counterclockwise. Place Insert 2 under bearing ram on the right.

Watch an instructional video on the #2 Insert here →

Pick the turbine up and feed the blank bur up into the spindle ram. While holding the turbine, slowly pull down on the handle until the rear bearing goes into the hole and the impeller is sitting flat.

Verify all parts are aligned. Pull down or tap on the handle firmly to push out the spindle / collet. The spindle /collet will fall down into the tray below. Now the turbine is completely disassembled.

Discard old bearings and slinger. Inspect impeller and autochuck for any visible damage. If any are found contact ProScore for a replacement.

Open your new rebuild kit and compare the two bearings. Place both on the counter with the black sides up and take a close look. The rear bearing has a raised out lip.

Pick up rear bearing and try to get it started on the rear of the spindle with your fingers with the black side facing the bur end. If the bearing is loose enough to push all of the way on with just your fingers use EZ Tight to hold it on.

Feed the blank bur up into the spindle ram on the left once more and hold in place. Slowly pull the handle down until the rear bearing meets Insert 2. Make sure everything is aligned and gently press the rear bearing onto the spindle. You will feel the bearing come to a stop because the spindle is stepped in the center. DO NOT FORCE PAST THIS POINT WHEN YOU MEET RESISTANCE! If the end of the spindle is not directly over the hole in Insert 2 then the bearing will stop prematurely and the button on the end will not stick out far enough to release the bur when you’re done, so it is important to be sure that your alignment is correct.

Hold the spindle so the bur points up and drop the impeller over the bur. Before pressing the impeller on check the direction. With the bur pointing directly away from you the blades at the 12 o’clock position should be slanting to the left.

Feed the bur up into the bearing ram on the right and hold in place. Slowly pull the handle down until the rear bearing meets Insert 2. Verify the end of the spindle is aligned with the hole in the center of Insert 2 then press down until it comes to a stop. If the impeller is riding loosely on the spindle contact ProScore for replacement.

Locate the front bearing and drop it over the bur. The dark side of the bearing should face down towards the impeller. Verify alignment. Repeat the pressing procedure. If the front bearing is riding loosely on the spindle use EZ Tight to hold it on.

Drop the slinger over the bur so the longer flange is facing down towards the front bearing. Make sure slinger is aligned before pressing on. If it is crooked then damage will occur where pressing down. Gently press the handle down until the slinger comes to a stop at the front bearing. The turbine is now rebuilt.

Replace o-rings in head cap and head of handpiece. Seat 1 loading spring into the head cap. Place the final final loading spring over bur and ensure it lies on front bearing.

Hold the handpiece so the head points upwards and install the turbine and head cap. Check the bur for resistance as you tighten the head cap. Connect the handpiece and run with bur installed. If the head cap heats up while testing, remove turbine and re-inspect head with an explorer to make sure no debris was overlooked.

If clean, then a spindle adjustment may be required. Turn the screw counter clockwise on Insert 2 1/8 a turn to gain spindle clearance. Place the bur up into the bearing ram and slowly pull down on the handle while holding the turbine in place until it meets Insert 2. Be sure everything is properly aligned then apply a gentle pressure to the handle until you feel a slight shift of parts. Re-install and test. If problems still occur contact ProScore for tech support.