Manitowoc 999 User Manual

Reference Only
SETUP AND INSTALLATION 999 LUFFING JIB OPERATOR MANUAL
4-60
Published 05-15-17, Control # 043-09
Operating Rigging Winch
1. Pin the guide sheaves on the bottom of the boom (and
luffing jib if used) in the reeving position. See Rigging
Winch Assembly drawing at the end of this section.
2. Select and confirm RIG WINCH ON mode.
3. Pay out rigging rope either by pushing the boom hoist
handle forward or by turning on the winch free-wheel
feature, as follows:
a. Pull locking pin (2, Figure 4-31
) out and hold.
b. Pull knob (3) out.
c. Release locking pin (2).
d. The rigging rope can now be pulled of the winch
drum manually.
4. Route the rigging rope through the guide sheaves on the
bottom of the boom butt and the boom top (and luffing jib
if equipped). See Rigging Winch Assembly drawing at
the end of this section.
5. Route the rigging rope through the load block and boom
point sheaves, through the guide sheaves on the boom,
and the connect the rigging rope to the pad eye on the
end of the load line from the desired load drum (front,
rear, or auxiliary). See Rigging Winch Assembly drawing
at the end of this section.
6. If on, turn off the winch free-wheel feature:
a. Pull locking pin (2, Figure 4-31
) out and hold.
b. Push knob (3) in.
c. Release locking pin (2).
7. Remove slack from the rigging rope (pull boom hoist
handle back) prior to paying out the load line.
NOTE If engine speed is set too low when attempting to
haul in the rigging rope, the rope may go slack. If
this happens, slowly increase engine speed until
the rope tightens.
8. Move the boom hoist control handle to off and push the
corresponding load drum control handle forward to pay
out rope from the load drum. The rigging winch will haul
in rope automatically.
9. Once load line is reeved through load block and boom
point:
a. Move load drum control handle to off.
b. Push boom hoist handle forward to slacken rope.
c. Disconnect rigging rope from load line.
d. Pull boom hoist control handle back to haul in
rigging rope for storage on rigging winch.
e. Connect load line to dead-end socket. See
instructions in Section 4 of Operator Manual.
10. Pin the guide sheaves on the bottom of the boom (and
luffing jib if used) in the stowed position. See Rigging
Winch Assembly drawing at the end of this section.
11. Select and confirm desired operating mode.
Item Description
1 Rigging Winch (Drum 6)
2 Locking Pin
3 Knob
4 Rope End Connector
5 Rigging Rope: 5/16 in (8 mm) Diameter
P2314a
Disengage
Free-Wheel
ON
3
2
4
1
5
FIGURE 4-31
CAUTION!
Avoid Rigging Winch or Wire Rope Damage!
Rigging winch will not automatically pay out rope if
selected drum control handle is pulled back to hoist
position.
Structural damage to winch or rigging line will occur!
If it is necessary to haul in rope on drum when load line is
connected to rigging rope, proceed as follows:
• Pay out rigging rope with boom hoist control handle
while hauling in load line with drum control handle.
• Keep rigging rope slacker than load line.
WARNING
Flying Object Hazard!
Do not attempt to disconnect rigging rope from load line
until rope is slack.
Rope could fly apart with explosive force and strike
personnel.

Manitowoc 999 Specifications

General

Brand	Manitowoc
Model	999
Category	Construction Equipment
Language	English