Release the spindle
Required tools
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Vise
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Torx wrench
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Allen key
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Pin spanner
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Wrench
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Fork-shaped tool
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Fasten the drill in a vise with rubber pads, with the air logic unit upward and the drill handle to the right. Remove the spindle guard.
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Note the position of the feed cassette. The markings, on the cassette end closest to the spindle, indicate the actual feed rate.
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Remove the cassette lock, the cassette, the five screws and two washers. Use a Torx wrench on the screw of the cassette lock and allen key on the other four screws.
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Pull out the clutch.
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Put the pin spanner in the original position of the clutch, with the four pin facing down. Turn the spanner until the pin locks into position.
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Note the position of the spindle:
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If the spindle is in starting position – Turn the pin spanner counterclockwise with a wrench until the spindle is released.
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If the spindle is in finishing drilling position – Turn the pin spanner clockwise with a wrench until the spindle is released.
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Pull out the pin spanner.
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Install the clutch in the original position.
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Put the feed cassette in the original position making sure that the markings on the cassette end closest to the spindle indicate the required feed rate.
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If you cannot install the cassette easily, turn its splines with the fork-shaped tool to align them.
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Install the washers and the four screws in the original position. Tighten the screws. Install the lock and the lock screw. Tighten the screw.
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Put the spindle guard back in the original position and secure it.
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Connect the air hose to the nipple. Do a functional test of the emergency stop button:
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Push the start button.
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Push the emergency stop button so that it locks in position. The spindle must stop immediately.
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Pull the emergency stop button to reset it. The motor must not restart.
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Disconnect the air hose.
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Before using the tool, test the starting position valve and the depth valve to ensure previous malfunction.
Step 1 – Make a visible test. Remove the valves from the tool. Turn the valves clockwise with the fork-shaped tool. Compress the valves and see if the spring is OK.
Step 2 – See section “Leak test”.
