TM 9-2320-260-34-1
3-80. VALVE SEAT GRINDING (Contd)
CAUTION
Do not try to remove a large quantity of grinder material at one
time; take several cuts. Failure to do so may result in damage to
electric grinder.
Grinder motor switch must be in "OFF" position before making
adjustments to tool bit and tool bit must be away from grinder
wheel stone. Failure to do so may result in damage to tool bit.
5. Turn knurled knob clockwise to remove a small amount on grinder wheel stone. Move tool bit back
and forth across grinder wheel stone several times to ensure a fill and clean cut has been made.
b. Pre-Grinding Operation
NOTE
Use two boards to support cylinder head to allow valves to clear
workbench.
1. Place cylinder head (1) on workbench with valve seats (2) facing up.
2. Place valve guide arbor on valve guide (3) from valve seat (2) side of cylinder head (1).
3. Position grinder driver and grinder wheel stone on valve guide arbor.
4. Position electric grinder motor on grinder driver at chuck.
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