ATTACHMENTS AND OPTIONS X WEIGHT (ADDITIONAL COUNTERWEIGHT) REMOVAL AND IN- 3. Tighten X Weight (additional counterweight) securing bolts (1). M20 bolt x 2 pcs. Tightening torque: 549 ± 58.8 N·m (56 ± 6 kgf·m, 405 ± 43.4 lbft) 4. Disconnect the wire rope from the crane. 5. Open the engine cover and tighten additional counterweight hook securing bolts (2). M12 bolt x 2 pcs. Tightening torque: 113 ± 9.81 N·m (11.5 ± 1 kgf·m, 83.2 ± 7.2 lbft) 6. Install the nameplate, which was removed earlier, in the fol- lowing manner. 1) Put a rubber washer beneath the nameplate. 2) After confirming that the collar has thrust through the rubber washer, tighten the screws.
NOTICE As the screws are tightened, if the washer becomes mis- aligned or the nameplate is dislocated, the nameplate may be broken. Be careful to avoid such misalignment or dislo- cation. 7. After the additional counterweight has been properly mounted, install an extension exhaust pipe in the following manner . (Canopy specification) 1) Connect the extension exhaust pipe (1) to the existing exhaust pipe so that it clears the additional counter- weight. 2) Tighten clamp (2). REMARK When removing or installing the extension exhaust pipe, put the removed exhaust pipe in the toolbox stored beneath the operator's seat. 6-21