Manitowoc GROVE GMK7450 Maintenance Manual page 118

Maintenance work on the carrier
7.6 Transmission
S
G
7 - 46
Speeding up the warming up procedure
•
Allow the engine to run at idling speed in neutral position N.
•
Fully press the service brake pedal, even if the parking brake is applied.
Risk of damage to the transmission when speeding up the warming up
procedure!
When the wheels are locked, the full engine output may only be applied in
transmission mode D or R for a maximum of 30 seconds. If this duration is
exceeded, the transmission could become overheated and be damaged.
Risk of scalding from escaping coolant
During accelerated warming up, coolant may escape from the expansion
tank, before the display shows a coolant temperature of 70 °C (160 °F). The
coolant then leaks from the expansion tank.
•
Shift first to transmission mode D and then to R and allow the engine to
run briefly at approx. 1,200 - 1,500 rpm in each transmission mode for a
maximum of 30 seconds.
•
Shift into neutral position N and let the engine run at idling speed.
•
Check the gear oil temperature.
•
Wait until the prescribed temperature range is reached.
•
Switch the engine off and check the gear oil level;
à
cold , P. 7 - 44; When the gear oil is warm , P. 7 - 45.
Driving the truck crane
•
Check the gear oil temperature.
•
Wait until the required gear oil temperature is reached.
•
Stop and apply the parking brake.
•
Align the truck crane horizontally.
•
Shift into the neutral position N.
•
Switch the engine off and check the gear oil level;
à
cold , P. 7 - 44; When the gear oil is warm , P. 7 - 45.
3 302 577 en
à
When the gear oil is
à
When the gear oil is
Maintenance manual
GMK7450