SkyTrak 8042 Service Manual - Manual (Page 57)

3-19 6036, 6042, 8042, 10042, 10054
Boom
4. Remove the locknuts (13) holding the threaded
clevis of the extend chains to the anchor bracket on
the rear of the third boom section.
5. Pull both extend chains out from the front of the
boom.
6. At the rear of the third boom section, remove the
retract chain sheave.
7. Remove the shoulder bolt. Let the retract chain hang
out the rear of the boom.
8. Using a sling or suitable support, pull the third boom
section straight out of the second boom section.
Reposition the slings as needed so the third boom
section balances when removed from the second
boom section. Set the boom section down on a hard,
level surface. Support the boom as needed to
prevent it from tipping over.
9. Remove the remaining wear pads, shims and
hardware. Label and tag each set of wear pads
being removed.
10. Inspect all wear pads for wear. Refer to Section 3.9,
“Boom Wear Pads.”
3.6.3 Second Boom Section Removal
1. At the front of the first boom section, remove the top,
side and bottom wear pads. Label and tag each set
of wear pads being removed.
2. Remove the retract chain sheave (14) from the
inside of the second boom section.
3. Using a suitable sling or support, secure the front of
the Extend/Retract cylinder.
4. Remove the retaining ring from one side of the
Extend/Retract cylinder rod end mounting pin.
5. On the left side of the first boom section, remove the
boom extend interlock proximity sensor (15) and
mounting bracket.
6. 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. While pulling the second boom
section out of the first boom section, guide the
retract chain into the rear of the boom. Set the boom
section down on a hard, level surface. Support the
boom as needed to prevent it from tipping over.
13
MH2121
14
MH2171
15