5.14.1 TESTING STEPS:
1. Hold the shank against a solid surface, and tap the end of the bit.
2. If the bit slides down into the shank AT ALL it needs to be replaced.
3. If the bit doesn't slide in the shank, hold the shank with pliers and with another pair of
pliers; grip the bit BELOW THE FLUTE, just above where the bit joins the shank. Do not
use excess grip pressure on the bit itself. Twist the bit and shank in two, opposite
directions
4. If the shank and the bit can twist independently, the bit should be replaced.
To simplify tooling changes or settings, a Bit Gauge is included to record the depth setting most
suitable for your purposes. See Fig 15. The Bit Gauge is inside the back door of the machine
to the left of the router wrenches. Proper bit depth varies by application but as a rule of thumb
- the drill depth only needs to be long enough to just penetrate the pocket.
Fig 15
5.14.2 SETTING STEPS:
1. Set the gauge on top of the collet and use an awl to scratch a reference line in the soft
aluminum where each bit should be. “D” for Drill and “R” for Router.
2. The plate has two sides that can be used settings for different processes in the shop.
TSM-21 Diagnostic Manual Parker/Humphrey Solenoids
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