OPERATING PROCEDURES GRT655/655L OPERATOR MANUAL
4-16 Published 3-23-2020, Control # 654-04
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.
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