Grove Published 1-20-2017, Control # 468-02 3-17
CD5515-2/YB5515-2 OPERATOR MANUAL OPERATING CONTROLS AND PROCEDURES
1. Up shifting to the next gear may be done at any engine
speed, while the crane is in motion, but first ease up on
the accelerator pedal.
NOTE: The transmission is equipped with a speed sensor.
This sensor protects certain shifting functions of the
transmission and is connected to a warning
beeper. Should a speed sensor signal not be
received by the transmission electronic control unit
(ECU) on power up, the ECU prevents the
selection of 4th gear. This is intended to indicate a
faulty sensor or wiring and all speed protection is
lost. If the signal is lost after power up, 4th gear will
be selectable until the power is turned off.
2. When downshifting, do not over-rev the engine. Allow
the crane to slow down before shifting to the next lower
gear. Downshifting is subject to speed limitations. If the
speed is too high a repeated double beep is sounded
and will continue until the speed drops below the limit or
downshift is deselected.
3. The Kickdown Switch, on the end of the gear lever, can
be used to select the next lowest gear providing the
speed is not too high (a double beep will be heard if the
speed is too fast). Press the switch to select the next
lowest gear (except when in 1st gear). The transmission
will downshift for approximately 6 seconds and then
return to the higher gear. The kick down selection can be
cancelled by pressing the button again. It will also be
cancelled by reversal in direction.
4. It is recommended that the crane come to a complete
stop before shifting between forward and reverse.
The following practices could result in transmission failure:
• Shifting between forward and reverse while the engine is
at high speed or heavy throttle, such as when the driving
wheels are in mud or snow — commonly called rocking.
• Shifting to reverse or forward while operating the engine
at high speed in neutral.
• Operating the transmission at or near “stall speed” for
more than 10 seconds at a time. “Stall condition” is when
the engine runs at high speed while the transmission is
in forward 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.
• Downshifting at high speeds causing the engine to over
rev.
Stopping Travel
1. Apply the service brakes and downshift as necessary to
slow the crane until it comes to a complete stop.
2. Place the transmission 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.
Operating the Outrigger Controls
Proper Leveling of the Crane
ASME B30.5 specifies that if a crane is not level within 1% of
grade, the allowable capacities must be reduced. Therefore,
whether lifting on rubber or outriggers, it is essential that the
crane is level to within 1% of grade. The bubble level that is
provided on the crane is calibrated to be accurate within 1%
of grade.
To properly level the crane, the boom must be positioned
over the front of the crane, fully lowered to horizontal and
fully retracted (for cranes fitted with a boom rest, the boom
shall be stowed onto the rest). Raise and level the crane
using the outriggers; refer to To Extend and Lower the
Outriggers, page 3-17.
A working crane may settle during lifting operations.
Frequently check the crane for level. When rechecking the
crane for level, the boom must be positioned over the front of
the crane, fully lowered to horizontal and fully retracted (for
cranes fitted with a boom rest, the boom shall be stowed
onto the rest). If necessary, relevel the crane using the
procedures under To Extend and Lower the Outriggers,
page 3-17.
Bubble Level Adjustment
The bubble level adjustment should be checked periodically;
if it is suspected that the bubble level indicator is out of
adjustment, verify and adjust the bubble level as follows:
1. Position the crane on a firm, level surface.
2. Extend and set the outriggers. Level the crane, as
indicated by the bubble level indicator, using the
outriggers.
3. Place a miracle pointer level, carpenter level, or similar
type device on a machined surface such as the turntable
bearing or bearing mounting surfaces.
4. Using the outriggers, level the crane as indicated on the
leveling device used in step 3.
5. Using the bubble level indicator mounting screws, adjust
the bubble level indicator to show level.
To Extend and Lower the Outriggers
The most common way of extending and retracting the
outriggers is to extend and retract the four outriggers at the
same time. Individual operation is accomplished by selecting
the desired Outrigger/Select Switch.
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