Right Turn Signal Indicator; Inhibit Regeneration; Diesel Exhaust Fluid (Tier 4 Engines-2014 And Later Only); High Exhaust System Temperature - Manitowoc Grove RT770E Operator's Manual

OPERATING CONTROLS AND PROCEDURES

Right Turn Signal Indicator

The Right Turn Signal Indicator (16) (Figure 3-6) is located in
the steering column gauge display.It is a green arrow light
that flashes when the turn signal lever is pushed up or the
Hazard Light switch is positioned to ON.

Inhibit Regeneration

The Inhibit Regeneration Indicator (17) (Figure 3-6) is
located in the steering column gauge display. When the
Regen Switch (9) (Figure 3-4) is in the inhibit regeneration
position, this amber indicator is illuminated and active and
manual regeneration is prevented.
Diesel Exhaust Fluid (Tier 4 Engines—2014
and Later Only)
The Diesel Exhaust Fluid (DEF) Indicator (18) (Figure 3-6) is
located in the steering column gauge display. The indicator
has four different stages which will be triggered by the fluid
level sensor in the DEF tank:
Low Tank - First warning to the operator is that the reducing
agent in the tank is low. The DEF Indicator (18) will be lit
continuously.
Derate - The DEF Indicator (18) will start to flash as a
warning to the operator that a derate will be activated if the
reducing agent in the DEF tank is not refilled.
Low Level Inducement - The DEF Indicator (18) will flash and
the engine warning indicator (14) will be lit continuously.
Derate will be activated at this stage.
Severe Inducement - Once the DEF (18) tank is empty, the
crane operation will be restricted. The DEF Indicator (18) will
flash and the Stop Engine Indicator (13) is solid red.

High Exhaust System Temperature

The High Exhaust System Temperature (HEST) Indicator
(19) (Figure 3-6) is located in the steering column gauge
display.
During regeneration it is possible for the engine exhaust to
reach temperatures exceeding 650°C (1200°F). The HEST
indicator will illuminate red to warn the operator of when
temperatures reach 675°C (1247°F) and will stay on until the
temperatures falls below 625°C (1157°F).
Warning lights near the tailpipe will flash during regeneration
when high exhaust temperatures exist.
For more information on the regeneration process, refer to
Diesel Particulate Filter (Tier 4 Engines Only), page 3-11

Engine Wait-to-Start

The Engine Wait-to-Start Indicator (20) (Figure 3-6) is
located in the steering column gauge display. It illuminates
3-12
amber for a period of time when the ignition switch is in the
ON position. The engine should not be cranked until the
Wait-To-Start light turns off. This light is controlled by the
engine ECM.

Four-Wheel Drive Engaged

The Four-Wheel Drive Indicator (21) (Figure 3-6) is located
in the steering column gauge display. It illuminates amber
when the Drive Axle Selector Switch (5) (Figure 3-2) is in the
four-wheel low position. This indicator will also blink if the
crane is shifted between two-wheel high and four-wheel low
and the brake pedal is not depressed and the transmission is
not in neutral.

Axle Differential Locked

The Axle Differential Locked Indicator (22) (Figure 3-6) is
located in the steering column gauge display. This indicator
illuminates amber after the Differential Lock Switch (10)
(Figure 3-8) is pressed to the LOCK position and the carrier
differential lock switches located on each axle are closed.
When in the LOCK position there is no differential action
between the wheels.

Rear Wheels Not Centered Indicator

The Rear Wheels Not Centered Indicator (23) (Figure 3-6) is
located in the steering column gauge display. The indicator is
an amber light that will illuminate any time the rear wheels
are not centered.

Engine Coolant Temperature Gauge

The Engine Coolant Temperature (water temp) Gauge (25)
(Figure 3-6) is located in the steering column gauge display.
The gauge indicates the engine coolant temperature on a
dual scale calibrated from 38°C to 138°C and 100°F to
280°F. The gauge receives a signal from the engine ECM
and a temperature sending unit in the engine cooling system.

Fuel Gauge

The Fuel Gauge (26) (Figure 3-6) is located in the steering
column gauge display. The gauge indicates the quantity of
fuel in the fuel tank and has a scale calibrated from empty (0)
to full (4/4). The fuel gauge receives a signal from a sending
unit in the fuel tank.
Ultra low sulfur diesel fuel required in Tier 4 engines.
If "Ultra Low Sulfur" fuel is not used in engines that require
it, the Cummins warranty will be void and the engine
performance will quickly deteriorate and may stop
running.
Published 04-04-2017, Control # 446-09
RT770E OPERATOR MANUAL
CAUTION
Engine Damage Hazard!