GROVE
Published 3-30-2017, Control # 516-04
1
This Supplement provides information regarding the proper
warm-up procedures for operating the crane in colder
temperatures. The information provided here supplements
the
Operator
and
Service Manual
s and must be used in
conjunction with these manuals.
COLD CLIMATE ENGINE OPERATION
Engine specific cold climate operation information is
available through your Cummins dealer/service center under
Service Bulletin 3379009.
CRANE WARM-UP PROCEDURES
The following procedures detail the actions that must be
taken to properly warm the different crane components
before operating the crane.
NOTE:
For temperatures below -9°C (15°F) refer to arctic
lubricants and conditions in the Operator and
Service Manuals.
Before starting the crane, ensure the appropriate lubricants
are used in order to provide lubrication for the prevailing
ambient temperatures in which the crane will operate in (a
list of lubricants and their temperature ranges can be found
in the Lubrication section of your crane’s
Operator Manual
,
by contacting your local Manitowoc distributor, or by
contacting Manitowoc Crane Care directly).
Engine
Warm-up Procedures for All Temperature Ranges:
1.
Upon startup, allow the engine to idle for 3 to 5 minutes
before operating with a load.
2.
Cold Engine Startup: After allowing the engine to warm
by idling it for 3 to 5 minutes, slowly increase the engine
speed to provide adequate lubrication to the bearings
and to allow the oil pressure to stabilize.
Transmission
Operating the 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) and
Industrial Cranes:
1.
Engage the parking brake and apply the service brake.
2.
Shift the transmission into the highest gear and increase
the engine RPM to 1500 for 15 seconds, then allow the
engine RPM to return to idle.
3.
Repeat Step 2 until the temperature of the transmission
sump reaches normal operating temperature.
Alternate Warm-up Procedures for Rough Terrain (RT)
and Industrial Cranes:
1.
Setup the crane on outriggers.
2.
Engage the transmission with 4-wheel drive selected (if
equipped) and allow crane to run at idle until the
temperature of the transmission sump reaches normal
operating temperature.
NOTE:
Warm-up operation of 4-wheel drive transmission
engaged in 2-wheel drive only could cause
transmission damage.
Alternate Warm-up Procedures for Truck Mount (TM/
TMS) Cranes:
1.
Setup the crane on outriggers.
2.
Engage the transmission and allow crane to run at idle
until the temperature of the transmission sump reaches
normal operating temperature.
Hoist
Performing a warm-up procedure is recommended at every
startup and is required at ambient temperatures below 4°C
(40°F).
Warm-up Procedures:
1.
Without operating the hoist function, warm the hydraulic
oil (see
2.
Once the hydraulic system is warm, operate the
unloaded hoist, in both directions, at low speeds several
times to prime all hydraulic lines with warm hydraulic oil
and to circulate gear lubricant through the planetary
gear sets.
CAUTION
Crane Damage Hazard!
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 Manitowoc recommended lubricants and
fluids for the prevailing ambient temperature and properly
start and warm the crane using the cold weather
p r o c e d u r e s f o u n d i n t h i s O p e r a t o r M a n u a l a n d
supplement before operating the crane at full load.
Reference Only
