Maintenance
Manual No. 188000
September 1, 2009
Maintenance
Whizard
®
AirMax MACH 3 Operating Instructions and Parts
List
5-11
Inspection and Maintenance of Handpiece
(Continued)
Pinion Gear
Check for worn or chipped teeth. Worn out teeth are indicated by rounded off or pointed
tops on the teeth.
Bearing
Install a new pinion and move the pinion side to side.
If the pinion feels loose in the bearing, the bearing should be replaced.
The bearing should be replaced after 500 hours of use.
Cover Plate
Look for signs of corrosion or wear on the cover.
Pay special attention to the area covering the gear teeth.
If the edge of the cover is worn, exposing the pinion and blade teeth, the cover should be
replaced.
Look for signs of wear on the pinion cover surface. If excessive wear signs are present,
check the seal on the power unit for leakage.
Frame
Inspect the frame surface where the housing is attached.
Look for corrosion and any nicks or burrs that may prevent proper housing seating.
Inspect the housing locating key for damage.
Inspect the cover retaining screws and replace if bent or damaged.
Steeling Device
Inspect the surface condition of the carbide steel. If chipped or cracked, it should be
replaced.
The plunger and steel should be cleaned and oiled with mineral oil in order to keep free
movement and prevent build-up of dirt.
Depth Gauge and Depth Gauge Clamps
Inspect the depth gauge for wear or damage.
If the depth gauge clamps are bent, replace the depth gauge.
