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1.5 OVER HOIST DETECTOR CAUTION
Pay attention to the distance between the hook block and the boom when raising the hook block.
The hook block also raises when the boom is extended. Always check the height of the hook block when performing the boom extending operation.
(1) Hook block
(2) Over hoist detector weight
(3) Over hoist detector
(4) Boom
The over hoist detector is a device which automatically stops operation as listed below, it also sounds the Over hoist and moment limiter alarm buzzer (5) to warn of an over hoisting condition, when the hook block (1) comes close to the Boom tip and lifts the weight (2) up:
• Hook raising
• Boom telescoping
• Boom raising
When the Over hoist and moment limiter alarm buzzer (5) beeps, return all of the Winch lever, Boom telescoping lever and Boom derricking lever to the NEUTRAL position immediately, then push the Winch lever forward (Down).
1.6 MACHINERY COVER
• Be sure to stop the engine and remove the starter switch key before removing the machinery cover.
• Do not remove the machinery cover immediately after the operation while the engine is still hot.
[1] REMOVING MACHINERY COVER
Remove the machinery cover with the following procedure when performing inspection/maintenance inside the machinery cover
1. Remove 9 mounting bolts (2) from the left side machinery cover (1).
Notes
The mounting bolts (2) are being used in quantity of 1 at the crane operation unit, 3 at the top, 3 at the rear and 2 at the forward left lower side.
2 Remove 3 mounting bolts (4) from the right side machinery cover (3).
Notes
The mounting bolts (4) are being used in quantity of 1 at the rear lower side and 2 at the right lower side.
3. Remove the left side machinery cover (1).
4. Remove the right side machinery cover (3).
[2] INSTALLING MACHINE COVER
When you finished inspection/maintenance in the machinery cover, install the machinery cover using the reverse procedure to that for removing it
When you complete re-installation, always check each part for any interference condition.
