If Transmission Has Trouble; Method Of Lowering Dump Body In Emergency - Komatsu ecot3 GALEO HM300-2 Operation And Maintenance Manual

TROUBLESHOOTING

IF TRANSMISSION HAS TROUBLE

If the transmission has any trouble, operate the machine according
to the following procedure.
1. Decelerate the machine with the brake and stop it on a safe
place.
2. Set the shift lever to the N position, then set the parking brake
switch to the PARKING position.
3. In some trouble modes, the gear is not shifted even if the shift
lever is operated.
In this case, perform the following procedure.
1) Disconnect emergency escape connectors (1) (No. A-1, A-2, 1-pole White connector) and connect them
again.
2) Set the parking brake switch to the TRAVEL position.
3) Operate the shift lever to move the machine to a safe place without depressing the accelerator pedal.
If the gear shift lever is operated with the accelerator pedal depressed, the emergency escape function will not work.
In addition, the emergency escape function may not work for some failure codes.
While the emergency escape function is working, the shift indicator of the machine monitor displays "E" and the shift
range (gear speed) of the transmission alternately.

METHOD OF LOWERING DUMP BODY IN EMERGENCY

When the dump body needs to be lowered to the seat while the
engine cannot be started for some trouble, perform the following
procedure.
1. Remove cover (2) from the rear of hydraulic tank (1).
2. Loosen locknut (4) of manual lower valve (3).
3. Turn grip (5) of valve (3) counterclockwise.
The oil in the hoist cylinder is drained into the hydraulic tank
and the dump body lowers.
4. Tighten grip (5) and locknut (4) and install cover (2).
If the dump body does not go down even when the above
method is used, please consult your Komatsu distributor.
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OPERATION