Manitowoc Published 12-05-17, Control # 032-23 4-59
18000 OPERATOR MANUAL SET-UP AND INSTALLATION
CRANE DISASSEMBLY
Lowering Boom And Jib
See Figure 4-32 for the following procedure.
1. Swing boom and jib slightly to either side of center and
lower load block or weight ball onto ground. Then swing
boom and jib to desired position with relation to crawlers
and apply swing brake.
Read and adhere to raising and lowering limitations
given in Liftcrane Fixed Jib Capacities Chart.
2. When equipped with an extended upper boom point, the
roller path must be a firm, level surface and clear of
obstructions. The extended upper boom point rollers
must travel freely and unrestrained on a solid and
impervious surface while boom is being lowered to the
ground.
3. Lower boom and jib until upper point (7, View A), if
equipped, just contacts ground.
4. Remove lower pins (8, View A).
5. Continue lowering boom until jib is almost on blocking.
NOTE For long boom-short jib combinations, weight of
backstay straps may prevent the jib from rotating
down to its proper operating position when boom is
lowered. If this happens, jib stop locking pins will be
tight and difficult to remove in step 5. Take the
following corrective action:
- Attach slings from assist crane to straps
midway between points shown in Figure 4-32
.
- Hoist with assist crane until jib rotates down to
its proper operating position.
6. Remove jib stop locking pins (5, View B) from Holes A or
B and store in shipping position as shown in View B.
7. Lower boom and jib onto blocking.
8. If necessary, disconnect assist crane from backstay
straps.
Lower Fixed Mast
NOTE No counterweight — carbody or crane — is
required to raise the fixed mast. The counterweight
can be installed, however.
General
To raise the mast, the SETUP mode must be selected to
enable simultaneous operation of Drum 4 (boom hoist) and
Drum 5 (mast hoist). The following controls are used to raise
the mast:
• Drum 4 (boom hoist) on left console
• Drum 5 (mast hoist) on right console
• Drum park switches
To operate Drums 4 and 5 simultaneously during crane
disassembly, the SETUP mode must be selected and
confirmed.
To operate the setup remote control during crane
disassembly, the SETUP REMOTE must be selected and
confirmed.
A qualified operator is required to raise the mast. The
operator shall be experienced with the 18000 and thoroughly
familiar with its operation.
A qualified signal person is required to give signals to the
operator(s).
A holdback is required to raise the fixed mast. Either the
assembled 18000 boom or an assist crane can be used.
Using Assembled 18000 Boom as Holdback
If the 18000 boom is used as the holdback, see Table 4-3 for
boom length requirements.
Using Assist Crane as Holdback
If an assist crane is used as the holdback, the assist crane
must provide the holdback forces given in Table 4-4
. The
letters in the table correspond to the letters in View C,
Figure 4-33
.
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