Komatsu HM400-5 - Operation if Tires Are Stuck in Ground; Method for Loading

4.
Disconnect (pull out) the secondary KTCS operation connectors (1) (No. TC1 (male), TC2 (female)), and
then connect (insert) them again.
Then, KTCS can operate.
5.
Set the parking brake switch to TRAVEL position and move the machine to a safe place.
OPERATION IF TIRES ARE STUCK IN GROUND
If any wheel is stuck, operate the KTCS.
If it is impossible to get the machine out even when repeating the procedure below, use a bulldozer to tow the
machine out.
1.
Check that the “KTCS Setting” is “ON”.
When the “KTCS Setting” is “ON”, the KTCS operates automatically. For KTCS Setting, see “HANDLE KO-
MATSU TRACTION CONTROL SYSTEM (KTCS) (3-199)”.
2.
Set the gear shift lever to position “5” and increase the engine speed.
3.
Release the accelerator pedal and brake pedal.
4.
Set the gear shift lever to position “R1” and increase the engine speed.
5.
Repeat steps 1 to 4 to move the machine backwards and forwards until it can escape.
METHOD FOR LOADING
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WARNING
Do not load the truck while its dump body is raised.
NOTICE
• When traveling, always set the dump lever to “FLOAT” position, regardless of whether the machine
is loaded or not loaded.
• If the gear shift lever is shifted to a position other than NEUTRAL position (N) when the dump lever
is not at “FLOAT” position, the centralized warning lamp will light up and the alarm buzzer will
sound.
• During loading operations, do not apply the parking brake. Apply the retarder brake.
• To maintain the operation of the retarder brake, do not stop the engine during loading work.
If large rocks are loaded directly onto the dump body by using a large-sized loader, etc., the dump body may be
deformed locally.
1.
When loading large rocks, load soil and sand first as cushion material.
2.
After loading the soil and sand, load the rock onto them.
The impacts to the dump body are reduced by this method.
In addition, when loading rocks that exceed the following conditions, install the optional body reinforcement
plate.
• Rocks with one side of more than 0.3 m
• Rocks of hardness more than 4.5 (Mohs scale)
• Rocks with weight of more than 150 kg
• When transporting steel ingots
HANDLE TAILGATE
(if equipped)
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WARNING
When hauling rocks or sticky materials, always remove the tailgate.
OPERATION MACHINE OPERATIONS AND CONTROLS
3-201