DIGGER DERRICK
1-76
463280 - 9/14 Terex South Dakota, Inc. Digger Derrick
OPERATION GUIDELINES
TILTING AND EXTENDING JIB
The following procedures are for tilting and extending the jib boom.
To tilt the jib boom (4), use the following procedures:
1. Support the jib boom (4) and remove pins (2).
2. Tilt jib boom (4) to desired angle.
3. Align mounting holes.
4. Secure with pin (2).
To extend and retract a single stage jib boom, use the following procedures:
1. Support the jib boom (4) and remove pin(s) (3).
2. Extend or retract jib boom (4) to desired length.
3. Align pin hole in jib boom (4) with pin hole in jib mounting bracket (1).
4. Secure with pin(s) (3).
To extend and retract a two stage jib boom, use the following procedures:
1. Support the jib boom assembly (4) and remove pin(s) (3).
2. Extend or retract second stage jib boom (4) to desired length.
3. Align pin hole in second stage with pin hole in first stage.
4. Secure with second stage pin(s) (3).
5. Extend or retract first stage of jib boom (4) to desired length.
6. Align pin hole in first stage with pin hole in jib mounting bracket (1).
7. Secure with first stage pin(s) (3).
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