VG412
26
9. Loosen both set screws and install proper groove blade.
10. Adjust the tool bits as shown in Figure 29. Turn hand knob clockwise to expose both set screws "D".
Loosen both set screws. Turn adjusting screw "B" to adjust groove depth. Use depth gage to check
depth, the lock blade set screws "D". Then retighten the set screws.
11. Turn hand knob counter-clockwise to retract blade until both set screws are covered.
12. Loosen clamp screws, "C" Figure 24, and slide blade holder into the blade block until the blade just
clears the high spot on the pipe. Tighten screws "C" and rotate the gear plate by hand to be sure blade
clears the pipe and the actuator bar clears the handknob.
Figure 30
Figure 30
13. Turn the hnad knob until tool bits contact the pipe at the highest point and add 1.5 to 2 turns on the
knob for preload.
14. Engage the drive shown in Figure 31 and turn on power and commence grooving.
Summary of Contents for VG412
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