Traveling On Slopes - Manitowoc Grove RT765E-2 Operator's Manual

RT765E-2 OPERATOR MANUAL
• Conduct all travel with the assistance of a ground person
to warn the operator of any changing conditions in the
terrain being traversed.

Traveling on Slopes

Crane operators must exercise caution whenever operating
the crane on uneven surfaces. Travel on slopes is permitted
if the following conditions are met.
General Conditions
• Travel must be on an improved surface or hard-packed
dry earth. Crane operators are required to inspect the
surface for good tire adhesion.
• All boom sections must be fully retracted.
• Boom extension must be in stowed position or removed
from the crane (if traveling with an erected boom
extension, follow the requirements under the section
Traveling with Boom Extension and/or Inserts Erected,
page 3-31.
• Boom must be positioned over the front of the crane.
Boom angle must be as follows:
- For fore/aft travel on grades less than 15%, the
maximum allowable boom angle is 20°.
- For fore/aft travel on grades greater than 15%, the
boom angle must be limited to horizontal (0°).
- For side slope travel on grades less than 10%, the
maximum allowable boom angle is 20°.
- For side slope travel on grades greater than 10%,
the boom angle must be limited to horizontal (0°).
• Swing brake must be applied and turntable lock pin
engaged.
• Either the hook block may be reeved over the main
boom nose, or the overhaul ball may be reeved over the
main boom nose or auxiliary boom nose; the other must
be removed. If hook block or overhaul ball remains
reeved on the boom, it must be secured at the tie down
on the carrier to prevent swinging.
• Tires must be inflated to the recommended pressure for
pick and carry operations.
• Hydraulic tank must be filled to specified level. Fuel tank
must be over half full.
• Engine and transmission fluids must be filled to the
specified levels.
• Axle differentials and planetary hub fluids must be filled
to the specified levels.
Grove
OPERATING CONTROLS AND PROCEDURES
• No loads may be supported by the boom (i.e., no pick
and carry loads) while traversing a slope.
• All cribbing or other non-standard accessories must be
removed from the crane.
• Avoid holes, rocks, extremely soft surfaces, and any
other obstacles that might subject crane to undue
stresses and possible overturn.
• Operator is to check for changing road conditions and
utilize a ground person if deemed necessary.
Slope Limitations - Fore/Aft Travel
• When traversing a fore/aft slope that is less than or
equal to 15% (8.5°), follow the normal crane travel
procedures outlined in this manual.
• When traversing a fore/aft slope that is greater than 15%
(8.5°) and less than 25% (14°), transmission shall be in
four-wheel drive. If crane must be parked, make sure the
transmission is in 4-wheel drive and the wheels are
chocked.
• When traversing a fore/aft slope that is equal to or
greater than 25% (14°), use an assist vehicle and shift
the crane's transmission to four-wheel drive. Do not park
crane on a slope equal to or greater than 25% (14°).
• Travel on a fore/aft slope greater than 30% (16°), such
as ramps, is permitted for short distances at low speed.
Consideration must be given for the terrain at the end of
the slope (for example, does the terrain level out so that
the crane can stop).
• For mine applications and similar, where the slopes and
the travel distance can be significant, brake fade must
be taken into consideration. For extended travel, check
cold tire pressure before start. (Refer to tire inflation
chart in Load Chart Book.) After every one hour of travel
time, regardless of ambient temperature, stop and allow
tires to cool for at least 30 minutes. At destination, tires
must be allowed to cool to ambient temperature before
crane lifting on rubber.
• For slope limitations when traveling with an elevated
boom or an erected boom extension and inserts, refer to
the specific traveling instructions in this section.
Slope Limitations - Side Slope Travel:
• Side slope shall not exceed 15% (8.5°).
Operator should carefully consider the conditions and travel
at the appropriate speed given the condition and should not
exceed the maximum speeds in the following tables taking
into consideration both fore/aft slopes and side slope.
Published 4-09-2021, Control # 364-11
3
3-29