Boom
3-7
6036, 6042, 8042, 10042, 10054 31211015
3.4.3 Second Boom Section Removal
1. At the front of the first boom section, remove the top,
bottom and side wear pads to the inside of the boom.
Label and tag each set of wear pads being removed.
2. Remove the capscrews and lockwashers holding the
center wear pad spacer mount to the front of the first
boom section. Label and tag each set of wear pads
being removed.
3. At the rear of the second boom section, remove the
capscrew and lockwasher holding the retract chain
sheave pin (8) to the mounting plate inside the boom.
4. Remove the retract chain sheave pin from the mount
and the retract chain sheave. Remove the retract chain
sheave from the second boom section.
5. Inspect the bushings inside the sheave. Replace the
bushings if there are any signs of wear. Inspect the pin
for wear or damage. Replace the pin if showing signs of
wear.
6. At the rear of the second boom section, remove the
hose reel assembly (9), lower wear pad and spacer.
Reassemble the capscrews, lockwashers and flat
washers to hold the lower wear pad in place for second
boom section removal.
7. Remove hose reel side plate, lower left side wear pad
and shims. Label and tag each set of wear pads being
removed.
8. Pull the hose reel, with hoses, out the back of the
second boom section. Allow the hose reel assembly to
slide down the hoses and rest it on the floor.
9. Label and remove the hoses from the hose reel. The
center bolt can remain in place to hold the hose reel and
side plates together.
10. Label, disconnect and cap the hydraulic hoses from the
bottom tube assemblies at the mounting plate (10).
11. Pull the hose ends out from between the second and
first boom sections and out the rear of the boom.
12. Using a suitable sling or support, secure the front of the
Extend/Retract cylinder.
13. Remove the retaining ring from one side of the
Extend/Retract cylinder rod end mounting pin (11).
14. Using a sling or suitable support, pull the second boom
section straight out of the first boom section.
Reposition the slings as needed so the second boom
section balances when removed from the first boom
section. Set the second boom section down on blocks
on a hard, level surface.
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