Shifting Gear - Komatsu ecot3 GALEO HM300-2 Operation And Maintenance Manual

Articulated dump truck
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OPERATION

SHIFTING GEAR

Do not move the gear shift lever to the N position when the machine is traveling or when it is traveling down a slope. Always place
the transmission in gear before traveling.
If the transmission is in Neutral, the engine cannot provide any braking effect and the steering wheel will become heavier. In
addition, there will be lack of cooling oil for the retarder, so there is danger that it will overheat or that the actuation of the brake
will be poor.
There may also be damage to the transmission or other parts of the power train, and there is danger of unexpected accidents.
When shifting gear, do as follows.
This machine has an automatic transmission, so set gear shift
lever (1) to the desired position, and the transmission will
automatically shift to a position to match the travel speed.
When the dump body is raised, if the shift lever is at the D position,
the transmission is fixed in 2nd, and if it is at positions 1 - 5, the
transmission is fixed in 1st. Keep the dump body lowered when
traveling.
NOTICE
When shifting between FORWARD and REVERSE, stop the machine
completely, and run the engine at low idle when shifting the lever. After
moving the gear shift lever, do not depress the accelerator until you
detect that the transmission clutch has engaged.
Do not operate the gear shift lever with the accelerator pedal depressed.
This will cause a big shock, and will also reduce the service life of the
machine.
SHIFTING UP
1. When accelerator pedal (2) is depressed to accelerate the
machine, the lockup clutch is engaged to shift the transmission
to direct drive.
2. If the machine is accelerated further, the transmission will
automatically shift up.
3 - 94
WARNING
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OPERATION

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