OPERATING CONTROLS AND PROCEDURES CD15 OPERATOR MANUAL
3-14 Published 3-30-2018, CTRL 636-05
or reverse and the drive wheels are not
moving. For example, when the wheels are
mired in deep sand or mud, or when the crane
is against a fixed barrier.
• Continually down shifting and over-revving the
engine.
NOTE: The transmission electronic control unit (ECU)
contains a setting that will inhibit a reversal in
direction from taking place (to protect the
transmission from abuse) when the traveling speed
is too high. A repeated double beep of the alarm
(under instrument panel) will sound until the speed
drops and a reversal in direction is given, or the
reversal is deselected.
Stopping Travel
1. Apply the service brakes and down shift as necessary to
slow the crane until it comes to a complete stop.
2. Place the travel select lever in Neutral (N) and engage
the parking brake.
3. Turn the ignition switch to the OFF position to stop the
engine.
4. If the crane is parked and unattended, remove the
ignition key.
COLD CLIMATE ENGINE OPERATION
NOTE: Additional information regarding cold weather
operation 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 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 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 Industrial 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.
CAUTION
Avoid Crane Damage!
Do not engage the parking brake while the vehicle is
moving. Damage to the crane can occur.
Disengage the parking brake before driving. Damage to
the crane can occur.
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
procedures found in this Operator Manual and
supplement before operating the crane at full load.
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