Crane Warm-Up Procedures - Manitowoc Grove RT765E-2 Operator's Manual

RT765E-2 OPERATOR MANUAL
Charge of capacitor can be measured by the following:
• Turn battery disconnect to on position.
• Press black button located on top of capacitor:
• If light flashes green, capacitor is charging and may not
successfully start machine.
• If light is solid green, capacitor is charged and ready for
starting.
Any other color or flash pattern may indicate an error,
reference decal located on capacitor.
Diesel Fuel
Diesel fuel with low temperature characteristics is required to
operate the engine down to an ambient temperature range
from - 40°C (-40°F) to 49°C (120°F). Refer to the applicable
engine manual for proper specifications.
Use the correct grade of fuel for the prevailing temperature.
Diesel fuel should have a cloud point of 6°C (10°F) less than
the lowest expected temperature. In case of emergency,
kerosene may be added to the fuel to bring the cloud point
down to the required temperature.This will minimize clogging
of filters and small passages by wax crystals.
NOTE: The addition of kerosene is NOT recommended for
general use. Refer to the Cold Weather Package
and Lubricants, page 5-3 of this operator manual.
CAUTION
Engine Damage Hazard!
If "Ultra Low Sulfur" fuel is not used in engines that require
it, the engine warranty will be void and the engine
performance will quickly deteriorate and may stop
running.
Operation Below -40°C (-40°F)
For crane operation below -40°C (-40°F), derate load chart
capacities by 6.60% for each degree Celsius or by 3.67 % for
each degree Fahrenheit below -40°C (-40°F).

CRANE WARM-UP PROCEDURES

The following procedures must be taken to properly warm
different crane components before operating crane.
NOTE: For temperatures below -9°C (15°F) refer to arctic
lubricants and conditions in the Operator and
Service Manuals.
Before starting crane, ensure appropriate lubricants are used
for ambient temperatures in which the crane will operate (a
list of lubricants and temperature ranges can be found in the
Lubrication section of your crane's Operator Manual, by
contacting your local Grove distributor, or by contacting
Manitowoc Crane Care directly).
Grove
OPERATING CONTROLS AND PROCEDURES
Operating the crane with the incorrect lubricants and
fluids for the prevailing ambient temperature and/or failing
to adequately warm the crane prior to cold weather
operation can lead to a failure of a crane component or
system.
Always use Grove recommended lubricants and fluids for
the prevailing ambient temperature and properly start and
warm the crane using the cold weather procedures found
in this Operator's Manual and supplement before
operating the crane at full load.
Engine
Warm-up Procedures for All Temperature Ranges:
1. After starting, allow engine to idle for 3 to 5 minutes
before operating with a load.
2. Cold Engine Startup: After allowing engine to warm by
idling it for 3 to 5 minutes, slowly increase engine speed
to provide adequate lubrication to bearings and to allow
oil pressure to stabilize.
Transmission
Operating transmission with a sump temperature below
normal operating temperature is limited to:
• operating in the neutral gear or
• driving with an unloaded crane while not exceeding
1500 engine RPM and not exceeding half throttle.
Warm-up Procedures for Rough Terrain (RT) Cranes:
1. Engage parking brake and apply service brake.
2. Shift transmission into the highest gear and increase
engine RPM to 1500 for 15 seconds, then allow engine
RPM to return to idle.
3. Repeat Step 2 until transmission sump reaches normal
operating temperature.
Alternate Warm-up Procedures for Rough Terrain (RT)
Cranes:
1. Set up crane on outriggers.
2. Engage transmission with 4-wheel drive selected (if
equipped) and allow crane to run at idle until
transmission
temperature.
NOTE:
Published 4-09-2021, Control # 364-11
CAUTION
Crane Damage Hazard!
sump reaches
Warm-up operation of 4-wheel drive transmission
engaged in 2-wheel drive only could cause
transmission damage.
3
normal operating
3-23