Manitowoc Published 03-29-17, Control # 064-23 3-37
14000 OPERATOR MANUAL OPERATING CONTROLS AND PROCEDURES
Luffing Hoist Operation
See Figure 3-21 for the Luffing hoist operation.
When crane is configured with a luffing jib (Drum 3), multi-
function handle on left console controls luffing jib drum.
1. Select luffing jib configuration and capacity charts on
Rated Capacity Indicator/Limiter display, Configuration
screen.
2. Turn off Drum 3 park switch. Drum 3 pawl disengages
from drum when park switch is moved from off.
3. Turn on travel park switch when operating drum 3.
4. Increase engine speed to desired rpm with hand throttle.
Depress foot throttle to momentarily increase engine
speed when more power is required.
5. See Figure 3-18
. Push luffing hoist handle 4 on left
console FORWARD from off to LOWER luffing jib or pull
handle BACK from off to RAISE luffing jib.
6. As luffing jib nears desired angle, slowly move luffing
hoist handle toward off to decrease speed. Then move
handle to off to stop luffing jib and hold it in position and
brake will apply.
7. Turn on Drum 3 park switch if luffing jib angle will not be
changed. Drum 3 pawl engages into drum when park
switch is moved to on.
CAUTION
Avoid Rigging Damage!
When lowering boom to ground:
• If equipped, disconnect fixed jib stop before jib point
contacts ground
• If equipped, remove upper boom point before upper
point contacts ground
• If equipped, disengage luffing jib stop at specified
boom to luffing jib angle (see Luffing Jib Rigging
Guide)
WARNING
Avoid Death or Serious Injury!
Read and understand instructions in Luffing Jib Rigging
Guide before attempting to raise or lower luffing jib from or
to ground.
Use extreme care when operating luffing hoist and boom
hoist at same time. Maximum or minimum operating
radius will be reached quickly when operating both hoists
at same time.
CAUTION
Avoid Rigging Damage!
Check that luffing hoist wire rope is reeved through all
sheaves and spooled properly onto Drum 3 before raising
boom and jib from ground.
• See Jib Rigging Drawing in Luffing Jib Operator
Manual for wire rope and reeving specifications
• See Wire Rope Installation in Section 4 of this manual
for instructions on attaching wire rope to luffing hoist
drum
CAUTION
Avoid Boom or Luffing Jib Damage!
Do not turn on Drum 3 park switch while raising or lower
luffing jib; brake will bring luffing jib to an abrupt stop. This
action could cause shock load damage to boom and jib.
Bring luffing jib to smooth stop with control handle and
then turn on Drum 3 park switch.
WARNING
Avoid Two-Blocking Hazard!
Pay out load lines while lowering luffing jib. Load may
contact luffing jib point sheaves if this step is not taken.
Wire rope or other parts could break allowing load to fall.
CAUTION
Avoid Luffing Jib Damage!
When lowering boom and luffing jib to ground, disengage
luffing jib stop at specified boom to luffing jib angle (see
Luffing Jib Rigging Guide).