PDF Operation & Maintenance Manual Komatsu HM300-5 Articulated Dump Truck - 1 MB
This is the official Operation & Maintenance manual for the Komatsu HM300-5 articulated dump truck.
It provides operators with essential information on safety, controls, and proper operating techniques.
The manual also outlines all required maintenance procedures to ensure the truck's longevity and reliability.
Following this guide is key to maximizing performance and preventing costly damage.
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TEN00442-07
ARTICULATED HM300 -2
DUMP TRUCK
SERIAL NUMBERS 2790 and up
WARNING
Unsafe use of this machine may cause serious injury or
death. Operators and maintenance personnel must read
this manual before operating or maintaining this machine.
This manual should be kept near the machine for
reference and periodically reviewed by all personnel who
will come into contact with it.
NOTICE
Komatsu has Operation & Maintenance Manuals
written in some other languages. If a foreign language
manual is necessary, contact your local distributor for
availability.
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CONTENTS FOREWORD
GUIDES TO MAINTENANCE 4- 2
OUTLINE OF SERVICE 4- 4
HANDLING OIL, FUEL, COOLANT, AND PERFORMING OIL CLINIC 4- 4
OUTLINE OF ELECTRIC SYSTEM 4- 8
WEAR PARTS 4- 9
WEAR PARTS LIST 4- 9
RECOMMENDED FUEL, COOLANT, AND LUBRICANT 4- 10
USE OF FUEL, COOLANT AND LUBRICANTS ACCORDING TO AMBIENT TEMPERATURE 4- 11
RECOMMENDED BRANDS, RECOMMENDED QUALITY FOR PRODUCTS OTHER
THAN KOMATSU GENUINE OIL 4- 12
STANDARD TIGHTENING TORQUES FOR BOLTS AND NUTS 4- 13
TORQUE LIST 4- 13
PERIODIC REPLACEMENT OF SAFETY CRITICAL PARTS 4- 15
SAFETY CRITICAL PARTS 4- 15
MAINTENANCE SCHEDULE CHART 4- 16
MAINTENANCE SCHEDULE CHART 4- 16
SERVICE PROCEDURE 4- 18
INITIAL 250 HOURS SERVICE (ONLY AFTER THE FIRST 250 HOURS) 4- 18
WHEN REQUIRED 4- 19
CHECK BEFORE STARTING 4- 39
EVERY 50 HOURS SERVICE 4- 40
EVERY 250 HOURS SERVICE 4- 41
EVERY 500 HOURS SERVICE 4- 52
EVERY 1000 HOURS SERVICE 4- 59
EVERY 2000 HOURS SERVICE 4- 77
EVERY 4000 HOURS SERVICE 4- 84
EVERY 6000 HOURS SERVICE 4- 87
EVERY 8000 HOURS SERVICE 4- 88
SPECIFICATIONS 5- 1
SPECIFICATIONS 5- 2
ATTACHMENTS, OPTIONS 6- 1
HANDLING AUTOMATIC RETARDER, ACCELERATOR CONTROL(ARAC) 6- 2
EXPLANATION OF COMPONENTS 6- 2
METHOD OF OPERATION 6- 3
HANDLING PAYLOAD METER HM 6- 4
FEATURES OF PAYLOAD METER HM 6- 4
METHOD OF USING ACCURATELY 6- 5
GENERAL LOCATIONS 6- 7
CONTENT OF DISPLAY (CONTROLLER, EXTERNAL DISPLAY LAMPS) 6- 10
EXTERNAL DISPLAY LAMPS 6- 12
DETAILS OF DATA STORED IN MEMORY OF PAYLOAD METER 6- 14
OPERATION OF SWITCHES 6- 17
ABNORMALITY AND WARNING DISPLAY (ERROR CODE) 6- 30
WHEN ERROR CODE F-09 IS DISPLAYED 6- 31
PROCEDURE WHEN DOWNLOADING 6- 32
OTHERS 6- 35
USE OF REAR VIEW MONITOR 6- 36
NAME AND FUNCTON OF EACH PART OF REAR VIEW MONITOR 6- 36
SETTING OF REAR VIEW MONITOR 6- 39
CAUTIONS WHEN USING REAR VIEW MONITOR 6- 39
1 - 10
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SAFETY LABELS SAFETY
(5) Caution for opening hydraulic tank cap (09653-03001)
(6) Caution for handling suspension (09659-33000)
(7) Caution for handling accumulator
(09659-53000)
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GENERAL PRECAUTIONS COMMON TO OPERATION AND MAINTENANCE SAFETY
EMERGENCY EXIT FROM OPERATOR'S CAB
Machines equipped with a cab have doors on the left and right sides. If the door on the one side does not open,
escape from the door on the other side.
DO NOT GET CAUGHT IN ARTICULATING PORTION AND DUMP BODY
If the clearance at the articulating portion changes and you get
caught in it, you will suffer serious personal injury or death. Do
not allow anyone to come inside the articulation range.
The clearance in the area around the dump body changes
according to the movement of the dump body. If you are caught,
there is danger that you will suffer serious injury or death.
Do not allow anyone near any of the rotating or telescopic parts.
PRECAUTIONS RELATED TO PROTECTIVE STRUCTURES
The operator's compartment is equipped with a structure (such as
ROPS, FOPS) to protect the operator by absorbing the impact
energy. As for the machine equipped with ROPS, if the machine
weight (mass) exceeds the certified value (shown on the
ROLL-OVER PROTECTIVE STRUCTURE (ROPS)
CERTIFICATION plate), ROPS will not be able to fulfill its function.
Do not increase machine weight beyond the certified value by
modifying the machine or by installing attachments to the machine.
Also, if the function of the protective equipment is impeded, the
protective equipment will not be able to protect the operator, and
the operator may suffer injury or death. Always observe the
following.
If the machine is equipped with a protective structure, do not remove the protective structure and perform
operations without it.
If the protective structure is welded, or holes are drilled in it, or it is modified in any other way, its strength may
drop. Consult your Komatsu distributor before performing any modifications.
If the protective structure is damaged or deformed by falling objects or by rolling over, its strength will be reduced
and it will not be able to fulfill its function properly. In such cases, always contact your Komatsu distributor for
advice on the method of repair.
Even if the protective structure is installed, always fasten your seat belt properly when operating the machine.
If you do not fasten your seat belt properly, it cannot display its effect.
UNAUTHORIZED MODIFICATION
Komatsu will not be responsible for any injuries or death, accidents, product failures or other property damages
resulting from modifications made without authorization from Komatsu.
Any modification made without authorization from Komatsu can create hazards. Before making a modification,
consult your Komatsu distributor.
Do not try to increase the capacity of the dump body or make any other modifications. Such modifications will
cause a drop in the braking efficiency, the balance of the machine will become poor, and this may lead to an
unexpected accident.
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PRECAUTIONS FOR OPERATION SAFETY
PARKING MACHINE
Park the machine on firm, level ground.
Select a place where there is no hazard of landslides, falling rocks, or flooding.
When leaving the machine, always lower the dump body
completely, lock with dump lever lock knob (1), set gear shift
lever (2) to N (neutral) position, set parking brake switch (3) to
PARKING position, then stop the engine.
Always close the operator's cab door, and use the key to lock all
the equipment in order to prevent any unauthorized person from
moving the machine. Always remove the key, take it with you,
and leave it in the specified place.
If it is necessary to park the machine on a slope, set blocks
under the wheels to prevent the machine from moving.
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PRECAUTIONS FOR MAINTENANCE SAFETY
PRECAUTIONS WITH HIGH-PRESSURE OIL
The hydraulic system is always under internal pressure. In addition, the fuel piping is also under internal pressure
when the engine is running and immediately after the engine is stopped. When performing inspection or
replacement of the piping or hoses, check that the internal pressure in the circuit has been released. If this is not
done, it may lead to serious personal injury or death. Always observe the following.
Do not perform inspection or replacement work with the circuit under pressure.
If there is any leakage from the piping or hoses, the surrounding area will be wet, so check for cracks in the piping
and hoses and for swelling in the hoses.
When perform inspection, wear protective eyeglasses and leather gloves.
There is a hazard that high-pressure oil leaking from small holes
may penetrate your skin or cause loss of sight if it contacts your
skin or eyes directly. If you are hit by a jet of high-pressure oil
and suffer injury to your skin or eyes, wash the place with clean
water, and consult a doctor immediately for medical attention.
PRECAUTIONS WITH HIGH-PRESSURE FUEL
When the engine is running, high-pressure is generated in the engine fuel piping. When performing inspection or
maintenance of the fuel piping system, stop the engine and wait for at least 30 seconds to allow the internal pressure
to go down before starting the operation.
HANDLING HIGH-PRESSURE HOSES AND PIPING
If oil or fuel leaks from high-pressure hoses or piping, it may cause fire or misoperation, and lead to serious
personal injury or death. If the hose or piping mounts are loose or oil or fuel is found to be leaking from the mount,
stop operations and tighten to the specified torque.
If any damaged or deformed hoses or piping are found, consult your Komatsu distributor.
Replace the hose if any of the following problems are found.
Damaged hose or deformed hydraulic fitting.
Frayed or cut covering or exposed reinforcement wire layer.
Covering swollen in places.
Twisted or crushed movable portion.
Foreign material embedded in covering.
NOISE
When performing maintenance of the engine and you are exposed to noise for long periods of time, wear ear covers
or ear plugs while working.
If the noise from the machine is too loud, it may cause temporary or permanent hearing problems.
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EXPLANATION OF COMPONENTS OPERATION
Check centralized warning lamp, alarm buzzer, monitor lamps, and meters.
Before starting the engine, turn the starting switch to ON position and check that the machine monitor does as
follows.
If the machine monitor does not work, there is probably a failure in the machine monitor system, so ask your
Komatsu distributor to perform inspection.
The centralized warning lamp is lit for 2 seconds, then goes out.
The alarm buzzer sounds for 2 seconds, then stops.
The machine monitor lamp is lit for 2 seconds and then goes out for 1 second.
The shift indicator displays "88" for 2 seconds, then goes out for 1 second.
The meters start the operations after the system is checked for 3 seconds.
The character display displays "KOMATSU" for 3 seconds.
3-6
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EXPLANATION OF COMPONENTS OPERATION
TORQUE CONVERTER OIL TEMPERATURE CAUTION LAMP
This lamp (2) warns the operator that the torque converter oil
temperature has risen.
When it lights up, "E02 TC OVERHEAT" is displayed on the
character display at the same time, so stop the machine in a safe
place, set the shift lever to N (neutral) position, and run the engine
under no load at a mid-range speed until the lamp goes out.
RETARDER OIL TEMPERATURE CAUTION LAMP
This lamp (3) warns the operator that the brake oil temperature has
risen.
When it lights up, "E02 BRAKE OVERHEAT" is displayed on the
character display at the same time , so stop the machine in a safe
place, set the shift lever to N (neutral) position, and run the engine
under no load at a mid-range speed until the lamp goes out.
BATTERY CHARGE CIRCUIT CAUTION LAMP
This lamp (4) lights up when the engine is running to warn the
operator that there is an abnormality in the charging system.
When it lights up, "E03 CHECK RIGHT NOW" is displayed on the
character display, so move the machine immediately to a safe
place, stop the engine, then check the charging circuit.
STEERING OIL TEMPERATURE CAUTION LAMP
This lamp (5) lights up to warn the operator that the steering oil
temperature has risen.
When it lights up, "E02 STRG OVERHEAT" is displayed on the
character display at the same time, so stop the machine in a safe
place, set the shift lever to the N position, and run the engine under
no load at a mid-range speed until the lamp goes out.
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EXPLANATION OF COMPONENTS OPERATION
OTHER FUNCTIONS OF MACHINE MONITOR
DISPLAY METHOD FOR REVERSE TRAVEL ODOMETER
Use this when checking the overall distance that the machine has traveled in reverse.
1. Check that the character display is displaying the service meter/odometer reading, or is displaying an action
code. If anything other than this is being displayed, turn the starting switch OFF, then turn the starting switch
again to ON position and wait until the above display is given.
2. Press the () of machine monitor mode selector switch 1. The
reverse travel odometer reading is displayed.
3. When completing the operation, press () of machine monitor
mode selector switch 1 or turn the starting switch OFF.
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EXPLANATION OF COMPONENTS OPERATION
AISS LOW SWITCH
By using this switch (9), it is possible to switch the AISS freely
between AUTO and LOW. Use each position as follows.
(a): AUTO position
For normal operations
(b): LOW position
When fine control of the machine is needed, such as when
putting it into a garage.
If the switch is at AUTO position:
When the machine is stopped, if the parking brake or retarder brake are actuated, the idling speed is automatically
adjusted to low speed. When the parking brake is released and the machine is moved off, the speed is
automatically adjusted to high speed.
The coolant temperature is detected, and when it is at low temperature, the idle is automatically adjusted to high
speed to reduce the warming-up time.
When the lamp switch is turned ON, the icon inside the switch lights up, regardless of the position of the switch.
INTER-AXLE DIFFERENTIAL LOCK SWITCH
This switch (10) can be used to switch the actuating conditions for
the inter-axle differential lock.
When this switch is pressed, the system is switched to MANUAL.
When the switch is not pressed or is pressed to return it, the
system is switched to AUTO.
AUTO: The inter-axle differential lock is automatically actuated to
stabilize the machine when the brake is applied or the gear
is shifted.
MANUAL: When the gear shift lever is at the F3, F2, F1, N, R1, or
R2 position, the inter-axle differential lock is actuated.
Regardless of the position of the switch, when the differential lock is actuated, the inter-axle differential lock pilot
lamp lights up.
When the lamp switch is turned ON, the icon inside the switch lights up, regardless of the position of the switch.
For details when using the differential lock, see "OPERATION USING DIFFERENTIAL LOCK (PAGE 3-104)".
3 - 36
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EXPLANATION OF COMPONENTS OPERATION
BODY PIVOT PIN
WARNING
When performing inspection of the machine with the dump body raised, always set the dump lever to HOLD position, lock with
the dump lever lock knob, then use the body pivot pin.
This is a safety device for the dump body. Use it when carrying out
inspection and maintenance with the dump body raised.
Raise the dump body fully, insert body pivot pins (1).
Always insert the body pivot pin on both sides.
STOWING BODY PIVOT PIN
Store the body pivot pin under the rear of the dump body.
Insert body pivot pin (1), then insert lock pin (2) to stow the body
pivot pin.
ARTICULATE LOCK
WARNING
If the machine is transported or raised without applying the articulation lock, the machine may suddenly articulate. This may
cause serious injury to persons in the surrounding area.
When transporting or raising the machine, always apply the articulation lock.
Apply the articulation lock if necessary when performing maintenance.
The articulation lock is a device to lock the front frame and rear
frame to prevent the machine from articulating.
LOCK position: Always set to this position when transporting or
raising the machine.
Set to LOCK position if necessary when
performing maintenance.
FREE position: Always set to this position when traveling
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EXPLANATION OF COMPONENTS OPERATION
ADJUSTING TIME
1. Turn the radio power ON. If the display shows the frequency,
set CLOCK button to the time display.
2. To set the time, keep CLOCK button pressed and
Press the button to change the minutes
Press the button to change the hours
PRECAUTIONS FOR USE
Stow the antenna when traveling in places with low overhead clearance.
To ensure safety, always keep the sound to a level where it is possible to hear outside sounds during operation.
If water gets into the speaker case or radio, it may lead to an unexpected failure, so be careful not to get water
on the equipment.
Do not wipe the scales or buttons with solvent such as benzene or thinner. Wipe with a dry soft cloth. If the dirt
cannot be removed easily, soak the cloth with alcohol.
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EXPLANATION OF COMPONENTS OPERATION
MODE SELECTOR SWITCH
Use this switch (4) to select the vents.
There are three combinations of vents: FACE, FACE/FOOT, and
FOOT.
Each time the switch is pressed, the vent display on the air
conditioner monitor changes in the order FACE, FACE/FOOT,
FOOT, FACE.
REMARK
Air also blows out from the defroster vent in FOOT mode.
DEF SWITCH
Use this switch (5) to change the vents to the DEF mode.
When the switch is pressed, the vent display on the air conditioner
monitor changes as shown in the diagram on the right.
When the DEF switch is pressed in any of the FACE, FACE/FOOT,
or FOOT modes, the system changes to the DEF mode. In
addition, when the DEF mode is being used, if the mode selector
switch is pressed, it will return to the mode being used before
switching to the DEF mode.
REMARK
Air also blows out from the foot vent in DEF mode.
FRESH/RECIRC SELECTOR SWITCH
Use this switch (6) to switch between recirculation of the internal air
(RECIRC) or intake of external air (FRESH). When the switch is
pressed, the display of FRESH/RECIRC selector symbol (C) on
the air conditioner monitor changes.
(It changes in the order RECIRC, FRESH, RECIRC.)
RECIRC: Only the air inside the cab is circulated. Use this position
when it is needed to perform quick heating or cooling of
the cab, or when the outside air is dirty (smells or is
dusty).
FRESH: Fresh air is taken in from the outside for normal heating or
cooling of the cab. Use this position to make the air inside
the cab fresh or to remove the mist from the cab windows.
When the air conditioner takes in fresh air from the
outside, the pressure inside the cab rises and this
prevents the entry of dirt. The higher the position of the
fan switch, the more efficient this becomes.
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OPERATION OPERATION
CHECK FUEL LEVEL, ADD FUEL
WARNING
When adding fuel, be careful not to let the fuel overflow. The fuel may cause fire. Always wipe up all the spilled fuel.
If fuel spills onto dirt and sand sticking to the machine, remove it and dirt and sand together.
Since fuel is flammable and dangerous, do not bring fire near it.
1. Check with fuel gauge (1) on the machine monitor.
2. After completing operations, add fuel through fuel filler (F) to fill
the tank.
Fuel tank capacity: 384 liters (101.45 US gal)
3. After adding fuel, tighten the cap securely.
REMARK
If the breather hole in the cap is clogged, the pressure inside the tank will go down and this may cause the fuel
to stop flowing. To prevent this, clean the breather hole from time to time.
To prevent air from being sucked into the engine, always pay careful attention to the fuel level in the tank.
CHECK WHEEL HUB BOLTS, TIGHTEN
Check for loose wheel hub bolts (1). If any are found, tighten them.
Tightening torque: 824 to 1030 Nm
(84 to 105 kgm, 607.6 to 759.5 lbft)
Insert a socket wrench in a pipe, then apply a force of 932N {95 kg}
at a point 1 meter from the fulcrum. This will give a tightening
torque of 932Nm {95 kgm, 687.1 lbft}.
When tightening the hub bolts after replacing the tires, travel for 5
to 6 km, then check the tightening torque to ensure that there are
no loose bolts.
If any wheel hub bolt is broken, replace all the wheel hub bolts for
that wheel.
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OPERATION OPERATION
STARTING ENGINE
WARNING
Start the engine only after sitting down in the operator's seat.
Do not attempt to start the engine by short-circuiting the engine starting circuit. Such an act may cause a serious bodily injury
or fire.
Check that there are no persons or obstacles in the surrounding area, then sound the horn and start the engine.
Never use starting aid fluids as they may cause explosions.
Exhaust gas is toxic. When starting the engine in confined spaces, be particularly careful to ensure good ventilation.
NOTICE
Do not accelerate the engine sharply until it is warmed up.
Do not operate the starting motor continuously for more than 20 seconds.
If the engine fails to start, wait for 2 minutes or so, and then try to start again.
When starting the engine, do not depress the accelerator pedal. Even if the accelerator pedal is depressed just after the engine
is started, the engine speed is limited by the turbo protect function. After the turbo protect time, however, the engine speed
rises sharply and the turbocharger may be damaged.
1. Turn the key of starting switch (1) to ON position.
The engine preheating pilot lamp lights up according to the
engine coolant temperature, and preheating of the engine
starts. When the preheating is completed, the engine
preheating pilot lamp goes out.
The pre-heating times are as shown below.
Engine water temperature Preheating time
above - 5°C (23°F) –
- 5°C to - 20°C (23°F to - 4°F) 20 to 40 sec
below - 20°C (- 4°F) 40 sec
REMARK
When the starting switch is turned to ON position, if the engine coolant temperature is above -5°C (23°F), though
preheating of the engine is carried out. In this case, it is possible to start the engine immediately.
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OPERATION OPERATION
SHIFTING DOWN
If accelerator pedal (2) is released, the machine speed will be
reduced, and the transmission will automatically shift down.
DOWN SHIFT INHIBIT
If the gear shift lever is operated when the machine is traveling, the travel speed may be faster than the maximum
speed allowed for the new speed range. In this case, do not shift gear immediately. Reduce the travel speed and
then shift down. This will prevent the engine from overrunning.
SHIFTING DOWN WHEN USING FOOT BRAKE
When using the foot brake to reduce speed, 3rd speed is held for longer than normal to reduce the shock when
shifting gear.
OVERRUN PROTECTION DEVICE
If the engine speed reaches the red range of the tachometer when the machine is traveling, the centralized warning
lamp will light up and the alarm buzzer will sound. If the travel speed and engine speed continue to rise, the brake
is automatically applied to reduce the travel speed of the machine in order to prevent the engine speed from rising
too far.
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OPERATION OPERATION
HANDLING TAILGATE
(if equipped)
WARNING
When hauling rocks or materials with high viscosity, always remove the tailgate.
When removing or installing the tailgate, consult your Komatsu
distributor.
NOTICE
Install a tailgate when hauling fluid materials such as finely crushed
soil.
Do not use a tailgate if the dump body is loaded with rocks, gravel, or
materials of high viscosity. There is danger that the tailgate may be
damaged, the loaded material may get caught in the tailgate during
dumping operations, or that the operator's cab may come off the
ground.
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DETERMINING AND MAINTAINING TRAVEL ROAD OPERATION
DETERMINING AND MAINTAINING TRAVEL ROAD
Determining and traveling the road in the jobsite is an extremely important factor both for reasons of safety and for
reducing the cycle time. To ensure safety in operations, do as follows.
DETERMINING TRAVEL ROAD
As far as possible, restrict the travel road to one-way travel.
If it is impossible to keep to one-way traffic, make the road with ample width to enable trucks traveling in opposite
directions to pass each other. If it is impossible to provide a sufficient road width, provide passing places at
various points along the road.
Always design the road so that the loaded truck passes on the side closest to the hill face.
If there are curves with poor visibility along the road, set up mirrors.
In places where the road should is weak or likely to collapse, set up a sign at a point at least 1.5 m (4 ft 11 in) from
the road shoulder to warn of the danger.
It is important to set up lighting or reflectors to enable the road to be traveled at night.
The grade of slope should be kept within 10% (approx. 6 deg.) as far as possible, and emergency escape points
should be set up on downhill slopes in case of any brake failure.
Increase the number of places where the road continues in a straight line. If there are curves in high-speed travel
areas, make the radius of the curve as large as possible.
Small S curves are particularly dangerous, so avoid such curves. The radius of the curve must be a minimum of
12 to 15 m (39 ft 4 in to 49 ft 3 in).
Make the radius of curves as large as possible.
Make the road wider at curves than it is in straight areas.
Make the surface of the road slightly higher on the outside of curves.
Be particularly careful to strengthen the road shoulder on the outside of curves.
Design the travel road as far as possible so that it does not cross any other travel road. In particular, when roads
cross at an angle on slopes, there is danger that a difference in height will be created in the road, and this will
make the machine sway strongly when traveling at high speed.
Cut the slope face to provide a special road for the trucks.
MAINTAINING TRAVEL ROAD
Perform the necessary action according to the conditions to insure that the road can always be traveled in safety.
Remove any unevenness in the travel surface, sloping to the left or right, or drooping of the road shoulder. Make
the road of ample strength and remove such obstacles as rocks and tree stumps.
Maintain the road from time to time with a bulldozer or motor grader.
Spray the road with water at suitable intervals to prevent dust from rising and reducing the visibility.
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LONG-TERM STORAGE OPERATION
LONG-TERM STORAGE
BEFORE STORAGE
When keeping in long-term storage (more than 1 month), store as follows.
Wash and clean all parts and house the machine in a dry building. Never leave it outdoors.
If the machine must be stored outdoors, select a flat area and cover the machine with a waterproof sheet.
Completely fill the fuel tank. This prevents moisture from collecting.
Lubricate and change the oil before storage.
Coat the exposed portion of the hydraulic cylinder piston rod with grease.
Disconnect the negative terminals of the battery and cover it or remove it from the machine and store it separately.
Apply the parking brake.
Set the tire inflation pressure for each tire to within the range of the specified inflation pressure for the type of tire.
Push the retarder control lever forward to OFF position.
Place the gear shift lever at N (neutral) position and turn the starting switch OFF.
To prevent rust, fill with coolant to give a density of at least 30% for the engine coolant.
DURING STORAGE
WARNING
If it is necessary to perform the rust-prevention operation while the machine is indoors, open the doors and windows to improve
ventilation and prevent gas poisoning.
During the storage period, operate the machine once a month to prevent loss of the oil film at the lubricated parts.
At the same time, charge the battery.
Before operating the work equipment, wipe off all the grease from hydraulic piston rods.
AFTER STORAGE
NOTICE
If the machine has been stored without performing the monthly rust-prevention operation, consult your Komatsu distributor
before using it.
When using the machine after long-term storage, do as follows before using it.
Wipe off the grease from the hydraulic cylinder rods.
Add oil and grease at all lubrication points.
When the machine is stored for a long period, moisture in the air will mix with the oil. Check the oil before and after
starting the engine. If there is water in the oil, change all the oil.
PRECAUTIONS BEFORE TRAVELING AFTER LONG-TERM STORAGE
1. Check all the oil and water levels before traveling.
2. When traveling after long-term storage, travel forward at a speed of 10 to 15 km/h (6.2 to 9.3 MPH) for 5 minutes
or 1 km to run the machine in, then change to normal travel.
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TROUBLESHOOTING OPERATION
STARTING THE ENGINE
CAUTION
Make sure that the parking brake switch is at PARKING position and the gear shift lever is at N (neutral) position for both normal
machine and the problem machine.
1. Make sure the clips are firmly connected to the battery terminals.
2. Start engine of the normal machine and run it at High idle (MAX).
3. Turn the starting switch of the failed machine to START position and start the engine.
If the engine doesn't start at first, try again after 2 minutes or so.
DISCONNECTING THE BOOSTER CABLES