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Figure 23
Figure 24
Figure 25
19 July 2023/v1.7
15.
When refacing the counterbore seat, turn the crank
handle clockwise. At the same time, hold the gear
bushing. This will result in a horizontal feed of
0.15mm per revolution. Turn the crank handle more
carefully when the carbide tip approaches the wall
and let the gear bushing slip partially between your
fingers. This permits you to stop turning as soon as
the carbide tip touches the wall. Figure 23
16.
The measuring level on the magnetic base allows
the counterbore depth to be checked without
removing the unit. Figure 24
The level height above the engine surface is:
BB-86 Standard
BB-86 Mini
BB-86 Giant
17.
Press the bow downwards and push the turning tool
until the centering roller touches the counterbore
wall. This step enables a rough centering of the unit
on the next counterbore. Figure 25
BB-86 | Serial-No. 865 / 0609 ©
ATTENTION:
Do not turn the crank handle backwards,
otherwise the hard metal tip might break.
35.00mm (1.378 In)
35.00mm (1.378 In)
32.00mm (1.259 In)
(All rights reserved)
26
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