ToolMaster TM-U3, Instruction Manual

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GRINDING SPINDLE
The spindle bearing has been factory-adjusted to exclude play while allowing for free-running of
the spindle. In the event some play develops in the course of time, such play should be taken
up by tightening the two nuts M. for this purpose, pull spindle from its seat after having loosened
screw S and removed the parts as indicated When tightening the nuts allow for a freerunning
spindle. Excessive tightening will result in bearing failure. After reinserting the spindle assembly
carefully tighten screw S in the bore, to hold the spindle assembly in position:
Wheel Replacement
To remove Grinding wheel you need to lock the spindle.
Firstly remove cup head cap screw (spindle lock screw)
Then line up hole in the spindle with the bolt hole,
may need to move spindle forward or back to correctly align
Use a pin to lock the spindle and the special tool to undo the wheel nut
Fit new wheel, tighten nut, remove pin and replace screw