Leaf Chain Adjustment and Maintenance (3-Section Boom

Inner Boom Removal (3-Section Boom)

1 . Loosen and remove the nuts from each clevis that secure the double chain to the outer boom .

Fig. 761 - Remove Clevis Nuts

2 . Position both ends of the double chain over the front of the inner boom .

3 . Remove the extend cylinder from the boom . See

“Boom Extend Cylinder-Three Section Boom” on page 209 . 4 . Push the inner boom into the intermediate boom 2 to 3 inches (50 - 76 mm) to relieve tension on the single chain . 5 . Loosen and remove the three bolts and washers that secure the single chain clevis block to the outer boom .

Fig. 762 - Remove Single Chain Clevis

6 . Use a crow foot wrench with a long extension to reach in and loosen the locking nut on the chain clevis. Once the locking nut is loosened, push the clevis forward and remove both nuts from the clevis. Loosen and remove the two nuts securing the single chain to the inner boom. Do not remove the single chain .

Fig. 763 - Loosen Chain Clevis Nuts

IMPORTANT: If the slide pads are reused, they must be marked as to location and direction (front/ rear/top/bottom) as they are removed. Wire tie the shims with each pad. Slide pads and shims must be reinstalled in their exact original position. 7 . Loosen and remove the bolts (1) and lockplates (2) and remove the two top slide pads and shims (3) and the four side slide pads and shims (4) from the rear of the inner boom .

3 3

4 2

1 2 4

Fig. 764 - Remove Rear Inner Boom Slide Pads

8 . Mark the hydraulic hoses (1) for correct assembly. Loosen and remove the two hoses from the tube lines connected to the tilt cylinder .