Products

Operate with clean, dry hands​ to prevent button/screen damage.

Avoid pressing buttons with sharp objects​ that may scratch the panel.

Turn off the AC system​ before shutting down the engine.

Allow the engine to run briefly​ before activating the AC compressor.

Set the fan to low speed​ when starting the AC for initial cooling.

Adjust temperature gradually​ instead of extreme high-low changes.

Use the "Recirculation" mode​ in dusty or polluted environments.

Switch to "Fresh Air" mode periodically​ to prevent window fogging.

Clean the panel surface regularly​ with a soft, dry microfiber cloth.

Avoid using chemical cleaners​ that may damage the display or buttons.

Check that all buttons respond correctly​ during daily inspections.

Verify display readability​ in different lighting conditions.

Keep the panel area free from loose items​ that could press buttons.

Close windows and doors​ when using AC for maximum efficiency.

Use the "Auto" mode when possible​ for optimal system balance.

Monitor for unusual display symbols or error codes.

Listen for abnormal noises​ when adjusting fan speeds or modes.

Check air output temperature​ from vents to verify cooling/heating.

Avoid blocking air intake and vents​ with objects or debris.

Park in shade when possible​ to reduce initial cooling load.

Turn off the AC compressor​ several minutes before engine shutdown.

Use the defrost mode​ to clear windshield fog quickly.

Report unresponsive controls or display issues​ immediately.

Keep the operator's manual accessible​ for mode reference.

Avoid spilling liquids​ on or near the control panel.

Do not cover the panel​ with maps, cloth, or other materials.

Verify that the cabin air filter​ is clean for proper airflow.

Use sunshades on windows​ to reduce cabin heat buildup.

Schedule regular AC system maintenance​ including panel checks.

Follow the manufacturer's recommended settings​ for fuel efficiency.

Pressure regulation for individual functions​ – Sets specific pressure limits for boom, arm, bucket, and swing circuits.

Function-specific overload protection​ – Prevents damage to cylinders and motors during overload.

Work tool pressure customization​ – Allows adjustment of force for different attachments.

Circuit priority pressure control​ – Manages pressure distribution between simultaneous functions.

Shock absorption in implement circuits​ – Cushions pressure spikes during sudden load changes.

Fine control of cylinder speed and force​ – By adjusting pressure, controls movement precision.

Swing circuit pressure regulation​ – Protects swing motor and gear from excessive torque.

Boom lowering/regeneration pressure control​ – Manages pressure in boom down circuits for smooth control.

Arm crowding/dumping pressure adjustment​ – Sets optimal pressure for digging and dumping.

Bucket curling/dumping pressure setting​ – Adjusts force for loading and material release.

Auxiliary circuit pressure regulation​ – Controls pressure for hydraulic attachments (breaker, grapple).

Pilot pressure supply regulation​ – Maintains stable pilot pressure for valve operation.

Load check valve pressure setting​ – Ensures pressure holding when control levers are neutral.

Anti-cavitation valve pressure control​ – Prevents vacuum formation in cylinders.

Travel circuit interface pressure regulation​ – Coordinates with main travel pressure valve.

Pressure compensation between parallel circuits​ – Balances pressure when multiple functions are used.

Lift capacity limitation​ – Can be set to limit maximum lift pressure for safety.

Attachment protection​ – Prevents excessive force from damaging mounted tools.

Operator effort adjustment​ – Affects the "feel" and responsiveness of controls.

System stability enhancement​ – Reduces pressure fluctuations for smoother operation.

Energy efficiency optimization​ – Prevents unnecessary high pressure, reducing fuel consumption.

Heat generation reduction​ – Limits pressure to decrease hydraulic system heat.

Emergency pressure relief for specific functions​ – Provides dedicated safety release.

Fine-tuning of work modes​ – Adjusts pressure settings for different work conditions.

Pressure sequencing for combined operations​ – Coordinates pressure during complex movements.

Motor stall prevention​ – Limits pressure to prevent travel or swing motor stalling.

Cylinder cushioning adjustment​ – Controls end-of-stroke cushioning pressure.

Hydraulic hammer pressure regulation​ – Sets optimal pressure for breaker operation.

Diagnostic reference point​ – Pressure readings help diagnose circuit-specific issues.

Performance calibration​ – Key adjustment point for tailoring machine performance to job requirements

Multi-layer synthetic fiber media​ – Primary filtration material for fine particles.

Cellulose-polyester composite​ – Common blend for balanced performance.

High-efficiency glass microfibers​ – For high dirt-holding capacity and fine filtration.

Resin-impregnated paper media​ – Provides stiffness and contaminant retention.

Wire mesh support screen​ – Internal/external mesh for media structural support.

Perforated steel center tube​ – Provides internal strength and flow channel.

Galvanized or stainless steel end caps​ – Corrosion-resistant metal caps.

Polyurethane or nitrile sealing gaskets​ – For leak-proof housing interface.

Anti-drainback valve silicone​ – Prevents oil backflow when engine is off.

Bypass valve spring steel​ – Ensures oil flow if filter is clogged.

Heavy-duty steel outer casing​ – Protects the filter element.

Powder-coated steel shell​ – External corrosion protection.

Abrasion-resistant media coating​ – Withstands high oil velocity.

Heat-resistant adhesives​ – Bond layers to withstand operating temperatures.

Water-resistant media treatment​ – Prevents media degradation from water.

Synthetic rubber end seals​ – Compatible with hydraulic oils and temperatures.

Plastic reinforcement grid​ – Internal support for pleated media.

Aluminum alloy components​ – Lightweight structural parts.

Cold-rolled steel spring​ – For bypass valve operation.

Epoxy sealants​ – Seal joints against leaks.

Fiberglass reinforcement​ – In some high-pressure filter designs.

Molded plastic bypass valve body​ – Lightweight and corrosion-free.

Metal-free media options​ – For applications requiring low ash content.

Microglass media with synthetic scrim backing​ – Enhanced durability.

Hydrophobic media treatment​ – Repels water for improved performance.

Static dissipative materials​ – Prevent static buildup in the system.

FDA-grade materials​ – For environmentally sensitive applications.

High-temperature resistant polymers​ – For gaskets and seals.

Reinforced nylon components​ – For strength and chemical resistance.

Recyclable material construction​ – Environmental consideration in design.

Manual fuel system priming – Removes air from fuel lines after filter changes.

Emergency fuel supply – Provides fuel to the engine if the electric pump fails.

Bleeding air from fuel lines – Purging air after system maintenance or running out of fuel.

Filter priming – Fills new fuel filters to prevent dry starts.

Fuel line pressure testing – Manually pressurizing system to check for leaks.

Pre-start fuel delivery – Ensuring fuel reaches injection pump before cranking.

Cold weather starting aid – Manual priming for easier cold starts.

System venting – Eliminating vapor locks in the fuel system.

Fuel transfer – Moving fuel between tanks or containers.

Drainage assistance – Draining water or contaminated fuel from the system.

Bypassing electric pump – Temporarily replacing electric pump function.

Diagnostic tool – Testing fuel delivery issues manually.

Emergency starting – Priming the system when batteries are weak.

Pressure relief – Releasing pressure before opening fuel system components.

Injection pump lubrication – Providing initial lubrication during assembly.

Sediment removal – Flushing out debris from low points in the fuel lines.

System flushing – Circulating fuel to clean internal passages.

Fuel gauge verification – Checking fuel flow when gauges are suspect.

Priming high-pressure pump – Ensuring the common rail pump is filled.

Leak detection – Building pressure to locate fuel leaks visually.

Manual circulation – Moving fuel through the system without engine operation.

Filter by-pass – Direct fuel flow around clogged filters temporarily.

Fuel sampling – Drawing fuel samples for contamination testing.

Emergency stop reset – Priming after engine shutdown due to fuel starvation.

Water separator draining – Assisting in draining water from fuel/water separators.

Backup to electric lift pump – Secondary fuel supply method.

Training demonstration – Teaching fuel system principles to technicians.

System integrity check – Verifying fuel line and connection tightness.

Prime maintenance tool – Essential for routine fuel system service.

Reliable mechanical backup – Simple, non-electric component for critical fuel delivery.

Maximum pressure limitation – Prevents system pressure from exceeding safe levels.

Hydraulic system protection – Protects pumps, valves, and cylinders from overpressure damage.

Pressure relief function – Diverts excess pump flow to tank when pressure reaches set point.

Load holding safety – Maintains pressure in cylinders when controls are in neutral.

Thermal management – Relieves pressure to reduce heat generation during stalling.

Shock absorption – Cushions pressure spikes from sudden load changes.

Pump unloading – Allows pump flow to return to tank at low pressure when not needed.

Energy conservation – Reduces power loss and fuel consumption by unloading the pump.

Stall prevention – Prevents engine stalling by relieving pressure at maximum setting.

Cylinder and hose protection – Prevents bursting of hoses and seals.

Stable operation – Maintains consistent system pressure for smooth machine control.

Emergency pressure release – Provides a safe pressure release path in fault conditions.

Boom and arm safety – Holds boom and arm in position without drifting.

Swing brake engagement – Maintains pressure for swing parking brake application.

Travel motor protection – Prevents overpressure in travel circuits.

Implement circuit security – Safeguards attachment hydraulic circuits.

Pilot system pressure regulation – May regulate pressure for pilot control circuits.

Sequence valve function – In some systems, directs flow based on pressure.

System pressure calibration point – Used to set and verify main system pressure.

Noise reduction – Reduces hydraulic noise by preventing excessive pressure.

Cavitation prevention – Maintains sufficient back pressure to avoid vacuum conditions.

Leakage compensation – Compensates for internal leakage in cylinders and valves.

Load sensing system integration – Works with load sensing pumps to control flow.

Multi-function valve operation – May have multiple relief settings for different functions.

Thermal relief capability – Opens at lower pressure if oil temperature is too high.

Anti-shock valve coordination – Works with anti-shock valves to dampen shocks.

Electric override capability – Some models have solenoid-controlled unloading.

Manual override provision – For emergency operation or testing.

Pressure adjustment capability – Can be adjusted to match different working conditions.

System diagnostics indicator – Abnormal pressure readings can indicate other system faults

CA111 - Pump 1 discharge pressure sensor abnormality (signal out of range).

CA112 - Pump 2 discharge pressure sensor abnormality.

CA122 - Pump 1 control current abnormality (NC/PC solenoid circuit fault).

CA222 - Pump 2 control current abnormality.

CA144 - Pump 1 tilting angle sensor abnormality.

CA244 - Pump 2 tilting angle sensor abnormality.

CA187 - Swing parking brake solenoid abnormality (current fault).

CA342 - Arm regeneration solenoid abnormality.

CA352 - Boom regeneration solenoid abnormality.

CA433 - Travel speed shift solenoid abnormality.

CA525 - Engine control communication error (data from engine ECU lost).

CA551 - CAN bus error (main controller communication fault).

CA552 - Display unit communication error (monitor communication lost).

E01 - Engine overspeed (RPM exceeds maximum limit).

E02 - Engine underspeed (RPM below minimum threshold).

E03 - Engine speed sensor abnormality (signal irregular).

E11 - Common rail pressure sensor abnormality (signal out of range).

E15 - Engine coolant temperature sensor abnormality.

E20 - Intake air temperature sensor abnormality.

E21 - Atmospheric pressure sensor abnormality.

E26 - Coolant level switch abnormality (low coolant warning).

E101 - DPF differential pressure sensor abnormality.

E102 - DPF over-temperature warning.

E103 - DPF regeneration request or failure.

E108 - Exhaust temperature sensor abnormality (DPF inlet/outlet).

E109 - DEF (diesel exhaust fluid) level sensor abnormality (if equipped).

E110 - DEF pressure sensor abnormality (if equipped).

AA10 - Fuel pre-filter warning (water detected or clogging).

HH01 - Hydraulic oil temperature sensor abnormality.

HH02 - Hydraulic oil level switch abnormality (low oil warning).

(Linkage)

High-strength alloy steel

Fine-grained forged steel

Quenched and tempered steel

High yield strength steel (≥345 MPa)

High tensile strength steel (≥500 MPa)

Impact-resistant steel grade

Abrasion-resistant steel plates

Precision-cut steel profiles

Stress-relieved after welding

Shot-peened surface

Zinc phosphate coating

Powder-coated finish

Ultrasonic tested (UT) material

Certified mill test reports (MTRs)

Weldable high-strength steel

(I-Beam/Center Frame)

Hot-rolled structural steel beams

Box-section fabricated steel

Reinforced flange and web plates

High rigidity steel construction

Full penetration welds at critical joints

Internal rib/stiffener reinforcement

Vibration-damped steel assembly

Primer + epoxy paint system

Galvanized components

Magnetic particle inspected (MPI) welds

Dimensional stability after machining

Fatigue-resistant design steel

Low-temperature impact toughness steel

ISO 630 structural steel compliance

Traceable material batches

Visual inspection for cracks - Check for longitudinal cracks on the ribbed side.

Check for fraying or separation - Look for torn edges or separated plies.

Inspect for glazing or shine - A shiny surface indicates slippage and wear.

Look for missing ribs or chunks - Damage to the V-ribs or cog structure.

Examine for oil or grease contamination - Oil degrades rubber and causes slippage.

Check belt tension - Ensure it's within the specified deflection range.

Verify proper alignment - Pulleys must be in line to prevent uneven wear.

Listen for squealing noises - A high-pitched squeal often indicates slippage.

Listen for chirping sounds - Can indicate misalignment or a worn bearing.

Feel for vibration - Excessive vibration during operation suggests wear or imbalance.

Inspect pulley grooves - Worn or damaged grooves can accelerate belt wear.

Check for pulley debris buildup - Clean out any material stuck in the grooves.

Verify belt routing - Ensure it's correctly installed on all pulleys.

Look for signs of overheating - Check for burnt rubber smell or discoloration.

Check belt length - A stretched belt will not maintain proper tension.

Inspect automatic tensioner (if equipped) - Check for smooth operation and proper range.

Check manual tensioner adjustment - Ensure it's locked in the correct position.

Examine belt backside - Look for wear, cracking, or signs of rubbing.

Ensure proper belt type/size - Confirm it matches the machine's specifications.

Check for foreign object damage - Look for cuts or punctures from debris.

Inspect belt during cold start - Listen for noises when the engine is first started.

Monitor belt performance under load - Check for slippage when alternator demand is high.

Look for belt dust - Accumulation of rubber dust indicates excessive wear.

Check mounting bolts - Ensure all pulley and tensioner bolts are tight.

Feel for belt temperature after operation - Excessive heat indicates a problem.

Inspect for coolant or antifreeze contamination - These fluids degrade rubber.

Check the belt's date code - Note installation date for preventive replacement.

Look for inconsistent wear patterns - Can point to a specific pulley issue.

Verify clearance - Ensure the belt doesn't rub against any other components.

Document the inspection findings - Record condition and any corrective actions taken

Daily visual inspection for cracks, deformation, or weld failures on linkage and I-beam.

Lubricate all linkage pins and bushings with recommended grease after each shift.

Check pin retainers and bolts for tightness and signs of wear daily.

Clean accumulated mud and debris from linkage joints and I-beam surfaces.

Inspect linkage parallelism and alignment to detect bending or misalignment.

Monitor for abnormal noises during digging indicating loose or worn pins.

Check I-beam weld seams and structural points for fatigue cracks.

Grease bucket hinge pins and linkage pivot points thoroughly.

Inspect linkage arms for wear pads and replace if excessively worn.

Ensure proper bucket-to-linkage attachment with no excessive play.

Tighten loose hardware using specified torque values.

Apply anti-corrosion spray on exposed metal surfaces if paint is damaged.

Check hydraulic cylinder mounting points on linkage for cracks or stress.

Verify smooth bucket movement without binding or jerking.

Inspect I-beam for impact damage or bending from rocks or overload.

Clean and lubricate bucket teeth adapters if attached to linkage.

Check linkage geometry for proper bucket curling and dumping angles.

Avoid overloading bucket beyond rated capacity to prevent linkage strain.

Store bucket properly to avoid stress on linkage when not in use.

Use recommended high-pressure grease for heavy-duty applications.

Document lubrication and inspections in the machine maintenance log.

Inspect shims and spacers at pin connections for wear or displacement.

Check for elongated pin holes in linkage arms or I-beam brackets.

Monitor hydraulic cylinder rod seals for leaks affecting linkage motion.

Keep work area clean to prevent abrasive dirt ingress during maintenance.

Follow break-in procedures after replacing pins, bushings, or linkage parts.

Train operators to avoid excessive side-loading or impact on linkage.

Use proper lifting equipment when removing or installing linkage components.

Consult the Komatsu service manual for specific torque specs and intervals.

Schedule periodic detailed inspections for wear measurement and alignment checks

Central processing unit (CPU)​ – Executes control algorithms and logic.

Sensor signal acquisition​ – Collects data from all machine sensors.

Analog-to-digital conversion​ – Converts sensor analog signals to digital values.

Input signal conditioning​ – Filters and scales raw sensor inputs.

Controller Area Network (CAN) management​ – Manages high-speed data bus communication.

J1939 protocol implementation​ – Standardized communication for engine and components.

Hydraulic pump control​ – Calculates and outputs commands to pump regulators.

Engine ECU communication​ – Exchanges data with engine control unit for power management.

Load sensing system processing​ – Calculates hydraulic demand and optimizes pump flow.

Operator command interpretation​ – Processes joystick, pedal, and switch inputs.

Power mode logic​ – Implements Eco, Standard, and Power mode algorithms.

Work mode selection​ – Controls patterns like Digging, Lifting, etc.

Closed-loop control​ – Compares target and actual values (e.g., pressure, speed) for adjustment.

Fault detection and diagnosis (FDD)​ – Monitors system parameters for abnormalities.

Diagnostic Trouble Code (DTC) storage​ – Logs fault codes and freeze frame data.

Warning and alert generation​ – Activates visual/audible alarms for operators.

Data logging​ – Records operational data (hours, fuel, events) for analysis.

Immobilizer function​ – Interfaces with security systems to enable/disable machine.

Parameter customization​ – Allows authorized adjustment of machine settings.

Display driver​ – Generates graphics and data for the monitor screen.

Keypad/interface management​ – Processes inputs from the operator's control panel.

Attachment control logic​ – Manages optional hydraulic attachments.

Pump torque limiting​ – Prevents engine stall by limiting hydraulic power demand.

Engine speed governing​ – Sends desired RPM signals to the engine ECU.

Auto-idle function​ – Lowers engine speed when controls are neutral.

Grade assist logic (if equipped)​ – Calculates and maintains blade or boom angle.

Safety interlock processing​ – Enables functions only when conditions are safe (e.g., seat switch).

Software-based calibration​ – Stores calibration data for sensors and actuators.

Fail-safe strategy execution​ – Limits machine function to a safe state upon critical faults.

System integration hub​ – Acts as the primary coordinator for all electronic subsystems.