Komatsu Excavator Parts and Components - Seal Kit - March 25, 2025

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Komatsu Excavator Seal Kits

Growshine International offers a comprehensive range of high-quality seal kits for various Komatsu excavator models:

Arm Cylinder Seal Kit for Komatsu Excavator PC40R-8, PC40MR-1, PC40MRX-1: 707-98-25250, 7079825250
Bucket Cylinder Seal Kit for Komatsu PC150
Arm Cylinder Seal Kit for Komatsu Excavator PC45-1, PC50UU-2: 707-98-25820, 7079825820
Arm Cylinder Seal Kit for Komatsu Excavator PC60-6, PC60L-6, PC70-6, PC70-6S: 707-99-27600, 7079927600
Boom Cylinder Seal Kit for Komatsu Excavator PC40-8
Swing Motor Seal Kit for Komatsu PC30-7
Boom Cylinder Seal Kit for Komatsu Excavator PC30-3
Boom Cylinder Seal Kit for Komatsu Excavator PC750-7, PC750-6, PC800-7, PC800-6: 707-99-77300, 7079977300
Bucket Cylinder Seal Kit for Komatsu Excavator PC20R-8
Travel Motor Seal Kit for Komatsu PC75UU-2
Adjust Cylinder Seal Kit for Komatsu Excavator PC200-1, PC200-2, PC200-3, PC200-5, PC200-6, PC200-7, PC200-8
Swing Motor Seal Kit for KOMATSU PC35-8
Bucket Cylinder Seal Kit for Komatsu Excavator PC60-3
Swing Motor Seal Kit for Komatsu Excavator PC130-5, PC130-6, PC130-7, PC130-8, PC130-10, PC130-11
Swing Motor Seal Kit for Komatsu PC220-8
Main Pump Seal Kit for Komatsu PC30
Arm Cylinder Seal Kit for Komatsu Excavator PC40MR-2, PC40MR-1, PC40MRX-1: 707-98-25350, 7079825350
Arm Cylinder Seal Kit for Komatsu Excavator PC30-3
Arm Cylinder Seal Kit for Komatsu Excavator PC30-7, PC20-7, PC10-7, PC20MR-1, PC28UU-3: 707-98-14610, 7079814610
Bucket Cylinder Seal Kit for Komatsu Excavator PC40MR-2: 707-98-15760, 7079815760
For Komatsu PC40-7 Bucket Cylinder Seal Kit
For Komatsu PC220-8 Swivel Joint Seal Kit
Swing Motor Seal Kit for Komatsu Excavator PC100-1, PC100-2, PC100-3, PC100-5, PC100-6
Main Pump Seal Kit for Komatsu Excavator PC60-2, PC60-3, PC60-5, PC60-6, PC60-7, PC60-8
For Komatsu PC30-7 Travel Motor Seal Kit
For Komatsu Excavator PC1100 Boom Cylinder Seal Kit
Main Pump Seal Kit for Komatsu Excavator PC40, PC40-1, PC40-2, PC40-3, PC40-5, PC40-6, PC40-7
Bucket Cylinder Seal Kit for Komatsu Excavator PC200-8, PC200LC-8, PC210-8K: 707-98-39610, 7079839610
For Komatsu PC120 Boom Cylinder Seal Kit
For Komatsu PC55 Bucket Cylinder Seal Kit
KOMATSU PC40-7 Swing Reduction box
For Komatsu Excavator PC30R-8 Boom Cylinder Seal Kit
Boom Cylinder Seal Kit for Komatsu Excavator PC120-5, PC120-6, PC120-6H, PC130-5, PC130-6, PC130-6G: 707-98-37620, 7079837620
Bucket Cylinder Seal Kit for Komatsu Excavator PC50UU-1
For Komatsu PC160 Bucket Cylinder Seal Kit
For Komatsu PC56 Main Pump Seal Kit
Main Pump Seal Kit for Komatsu Excavator PC38UU-1, PC30-6, PC20-6: 705-41-08001, 7054108001
Swivel Joint Seal Kit for Komatsu Excavator PC30-1, PC30-3, PC30-5, PC30-6, PC30-7
For Komatsu PC40 Swing Motor Seal Kit
For Komatsu PC220-8 Swivel Joint Seal Kit
For Komatsu PC75 Main Pump Seal Kit
Main Valve Seal Kit for Komatsu Exavator PC40-7, PC30-7, PC25-1, PC40T-7
For Komatsu PC220-8 Main Pump Seal Kit
Swing Motor Seal Kit for Komatsu Excavator PC300, PC300-1, PC300-2, PC300-3, PC300-5, PC300-5C, PC300-5K, PC300-6, PC300-6Z, PC300-7, PC300-8
For Komatsu PC200-7 Swivel Joint Seal Kit
For Komatsu PC55 Travel Motor Seal Kit
For Komatsu Excavator PC35R-8 Boom Cylinder Seal Kit
For Komatsu Excavator PC40-7, PC40T-7, PC40R-7 Bucket Cylinder Seal Kit: 707-98-24210, 7079824210
Control Valve Seal Kit for Komatsu Excavator PC200-8, PC200LC-8

Komatsu Excavator Filters

Air Filter for Komatsu Rock Drill BP500-3: 600-181-9240, 6001819240 and 600-181-9340, 6001819340
Air Filter for Komatsu HD200-2, HD205-3, HD255-5, HD320-2: 600-181-4311, 6001814311 and 600-181-4211, 6001814211
Fuel Filter for Komatsu Excavator PC120-6, PC200-7, PC220-7, PC228US-3: 6732-71-6112, 6732716112
For Komatsu PC200-7 PC200-8 Fuel Add Port Filter
Hydraulic Filter for Komatsu D61PX-23, CD110R-2, PW98MR-8, D61EX-15: 21W-60-41121, 21W6041121
Hydraulic Filter for Komatsu D65PX-12, D65P-12, D65EX-12, D65E-12, D60P-12: 070-63-01100, 0706301100
Air Filter for Komatsu Excavator PC15-2, PC30-7, PC20: 372-02-AF931, 37202AF931

Komatsu Excavator Controllers and Valves

Main Pump Controller PVC for Komatsu Excavator PC300-6, PC300SC-6, PC350-6, PC400-6, PC400ST-6, PC450-6: 7834-20-2001, 7834202001
Main Relief Valve for Komatsu Excavator PC200-5, PC220-5: 709-70-51401, 7097051401
ECU Electronic Control Unit for Komatsu Engine SAA4D95LE-5 Excavator PC118MR-8, PC130-8, PC138US-8, PC138USLC-8, PW118MR-8: 600-475-1100, 6004751100
Hand Throttle Controller for Komatsu Excavator PC400-6Z, PC400-6C, PC400ST-6: 7834-27-3001, 7834273001
Hand Throttle Controller for Komatsu Excavator PC200Z-6LE: 7834-27-3000, 7834273000
TVC Controller Unit for Komatsu Excavator PC100-6, PC120-6, PC200-6, PC210-6, PC220-6, PC220LC-6, PC300-6, PC400-6: 7834-27-3003, 7834273003
Air Conditioner Controller ECC for Komatsu Excavator PC160LC-8, PC300-8, PC300LC-8, PC350-8, PC350LC-8, PC400-8, PC400LC-8, PC450-8: 17A-979-3180, 17A9793180
Throttle Motor for Komatsu Excavator PC128UU: 22B-43-11142, 22B4311142, 22B-43-11141, 22B4311141
Air Conditioner Control Panel for Komatsu Excavator PC200-7, PC220-7, PC300-7, PC360-7, PC-7, PC160LC-7K: 146570-0160, 1465700160, 146570-2510, 1465702510
Engine Controller Panel E-ECU for Komatsu Excavator PC400-8, PC450-8, PC550LC-8: 600-461-1100, 6004611100
Throttle Motor for Komatsu Engine SAA6D125E-2, SAA4D102E-2 Excavator PC200-6, PC120-6, PC100-6, PC210-6, PC300-6: 7834-40-2000, 7834402000, 7834-40-2001, 7834402001
For Komatsu Excavator PC200-7 Engine 6D102 Solenoid Valve

Komatsu Excavator Gears and Shafts

Swing Main Shaft Mechanism Slewing Reducer for Komatsu Excavator PC60-7, PC70-7, PC75-1, PC75R-2, PW75-1: 201-26-71140, 2012671140
Chain Bushing for Komatsu Excavator PC120-6
Traveling Motor Final Drive 2nd Sun Gear for Komatsu Excavator PC200-6, PC200-7, PC200-8: 20Y-27-22130, 20Y2722130
Swing 2nd Central Gear for Komatsu Excavator PC100-6, PC120-6, PC128
Axle Spacer bush for KOMATSU PC40-1
Traveling 3rd Planetary Gear for Komatsu Excavator PC60-6
Travel Sun Gear for Komatsu Excavator PC60-7
Swing Machinery Sun Gear for Komatsu Excavator PC60-7, PC70-7, PC75-1, PC75R-2, PC75UD-3, PC75US-3, PC75UU-3, PC78US-5, PW75-1, PW75R-2: 201-26-71171, 2012671171
Swing 1st Three Planetary Gear for Komatsu Excavator PC100-6, PC120-6, PC128
KOMATSU PC100 Travel motor three star gear
KOMATSU PC200-6 Swing Motor First Class Gear parts Pin
KOMATSU PC128 Vertical Shaft Oil Seal Plate
Swing Sun Gear for Komatsu Excavator PC200-6, PC200LC-6, PC210-6, PC210LC-6, PC220-6, PC220LC-6, PC228US-1, PC228UU-1, PC230-6, PC240-6: 20Y-26-22131, 20Y2622131

Komatsu Excavator Engine Parts

1 Set Cylinder Liner for Komatsu PC30 Engine 3D84-1
Thermostat for Komatsu Engine 3D82AE-3, 3D82AE-5, 3D82AE-6, 3D84E-5, 3D88E-5, 3D88E-6, 4D88E-3, 4D88E-5, 4D88E-6, S3D84E-5, S4D84E-5: YM129155-49801, YM12915549801
Turbo HX35 Turbocharger for Komatsu Engine SAA6D102E-2 Excavator PC200-7, PC200LC-7, PC210LC-7, PC228US-3: 6738-81-8090, 6738818090
24V Alternator for Komatsu Engine 4D105-3, 4D95L-1, 6D105-1 Excavator PC130F-7, PC200-5, PC220LC-5: 600-821-6120, 6008216120
24V 11T Starter Motor for Komatsu Engine 6D95L, S6D95L-1, 6D95L-1 Excavator PC100-3, PC120-3, PC150LC-3, PW100-3 Motor Grader GD511A-1: 600-813-3320, 6008133320
12V 15T Starter Motor for Komatsu Engine 3D78-1, 3D84-2, 3D84E-3 Excavator PC28UU-1, PC15-2, PC25-1, PC40FR-1: YM17100877010, YM17100877010
Starter Motor for Yanmar Engine 4D84 Komatsu Excavator PC40
For Komatsu 20HT Engine 4D130 Fan Belt 8600
Crankshaft Oil Seal for Komatsu Excavator PC60-2, PC60-3, PC60-5, PC60-6, PC60-7, PC60-8
For Komatsu PC360-7 Cummins 6CT 8.3L Excavator Diesel Stop Solenoid 4063712

Other Komatsu Excavator Parts

Carrier for Komatsu Excavator PC40-7, PC40T-7, PC45-1, PC40R-7, PC50UG-2, PC50UU-2, PC50UD-2: 20T-26-71132, 20T2671132
Cab Door Lock Assembly for Komatsu PC200-8, PC200LC-8 Excavator
Bucket Cylinder Seal Kit for Komatsu Excavator PC78US-6
For Komatsu Excavator PC60-6 Display Screen Meter Liquid Crystal LCD
Swivel Joint Seal Kit for Komatsu Excavator PC200-6, PC200-6L, PC200-6E
For Komatsu Excavator PC200-7, PC220-7, PC300-7, PC360-7, PC-7, PC160LC-7K Air Conditioner Control Panel: 146570-0160, 1465700160, 146570-2510, 1465702510
For Komatsu Excavator PC400-8, PC450-8, PC550LC-8 Engine Controller Panel E-ECU: 600-461-1100, 6004611100
For Komatsu Excavator PC100-6, PC120-6, PC200-6, PC210-6, PC220-6, PC220LC-6, PC300-6, PC400-6 TVC Controller Unit: 7834-27-3003, 7834273003
For Komatsu PC200-2 Engine Mounting Rubber Cushion Feet Bumper
KOMATSU PC360-7 Door Lock
KOMATSU PC50-8 Swing Motor
For Komatsu Excavator PC220-1, PC220-2, PC220-3, PC220-5, PC220-8, PC270-8, PC300-6, PC300-7, PC300-8, PC360-7 Forging Bucket Tooth: 207-70-14151, 2077014151, 206-70-48610, 2067048610
For Komatsu Excavator PC220-1, PC220-2, PC220-3, PC300-6, PC300-7, PC300-8, PC360-7 Bucket Tooth: 207-70-14151, 2077014151
For Komatsu Excavator PC360-7, PC400-6, PC450-6, PC360LC-10, PC400LC-6 Aftercooler: 615-26-25110, 6152625110
Swing Motor Case for KOMATSU PC100-6, PC120-6, PC130-6, PC128UU-1: 706-73-43011, 7067343011
Pressure Sensor for Komatsu Bulldozer D31EX-21A-M, D85PX-15R, D155A-6R, D375A-6, D475A-5E0: 7861-93-1650, 7861931650
KOMATSU PC60-6 left door glass frame-Frame Only
For Komatsu Excavator PC270-7, PC300-7, PC350-7, PC360-7 Carrier Roller: 207-30-75110, 2073075110
For KOMATSU PC120-6 Engine 4D95 Glass Pin
KOMATSU PC300-7 left door down glass frame without Glass
Oil Cooler for Komatsu Excavator PC220-8, PC220LC-8, PC240-8K, PC240NLC-8K, PC240LC-8K, PC240LC-8, PC200LL-8: 206-03-21431, 2060321431
KOMATSU PC100 Travel motor three star gear
For Komatsu Excavator PC200-6 Engine Mounting Rubber Cushion Feet Bumper
KOMATSU PC210-8 left door down glass frame without Glass

Component Explanations

Komatsu PC40R-8 Arm Cylinder Seal Kit: This seal kit is designed for the arm cylinder of a Komatsu PC40R-8 excavator. The arm cylinder controls the movement of the excavator's arm.

Chinese: 小松 PC40R-8 挖掘机大臂油缸修理包 (Xiǎosōng PC40R-8 wājuéjī dàbì yóugāng xiūlǐ bāo)
Russian: Комплект уплотнений гидроцилиндра стрелы экскаватора Komatsu PC40R-8 (Komplekt uplotneniy gidrotsilindra strely ekskavatora Komatsu PC40R-8)

Komatsu PC150 Bucket Cylinder Seal Kit: This seal kit is used in the bucket cylinder of a Komatsu PC150 excavator. The bucket cylinder controls the digging and dumping motion of the bucket.

Chinese: 小松 PC150 挖掘机铲斗油缸修理包 (Xiǎosōng PC150 wājuéjī chǎndǒu yóugāng xiūlǐ bāo)
Russian: Комплект уплотнений гидроцилиндра ковша экскаватора Komatsu PC150 (Komplekt uplotneniy gidrotsilindra kovsha ekskavatora Komatsu PC150)

Komatsu PC300-6 Main Pump Controller PVC: The main pump controller (PVC) regulates the flow and pressure of hydraulic fluid from the main pump in Komatsu PC300-6 excavators, influencing the machine's overall hydraulic performance.

Chinese: 小松 PC300-6 挖掘机主泵控制器 PVC (Xiǎosōng PC300-6 wājuéjī zhǔ bèng kòngzhì qì PVC)
Russian: Контроллер главного насоса PVC для экскаватора Komatsu PC300-6 (Kontroller glavnogo nasosa PVC dlya ekskavatora Komatsu PC300-6)

Komatsu PC60-7 Swing Main Shaft Mechanism Slewing Reducer: This mechanism allows the upper structure of the Komatsu PC60-7 excavator to rotate. The slewing reducer is a gearbox that reduces the speed and increases the torque of the swing motor.

Chinese: 小松 PC60-7 挖掘机回转主轴机构回转减速器 (Xiǎosōng PC60-7 wājuéjī huízhuǎn zhǔshóu jīgòu huízhuǎn jiǎnsùqì)
Russian: Механизм главного вала поворота редуктора поворота для экскаватора Komatsu PC60-7 (Mekhanizm glavnogo vala povorota reduktora povorota dlya ekskavatora Komatsu PC60-7)

Komatsu PC120-6 Chain Bushing: Chain bushings are components in the undercarriage of a Komatsu PC120-6 excavator. They are cylindrical parts that fit inside the links of the track chain, providing a wear surface for the sprocket teeth.

Chinese: 小松 PC120-6 挖掘机链条衬套 (Xiǎosōng PC120-6 wājuéjī liàntiáo chèntào)
Russian: Втулка гусеничной цепи для экскаватора Komatsu PC120-6 (Vtulka gusenichnoy tsepi dlya ekskavatora Komatsu PC120-6)

Air Filter 600-181-9240 for Komatsu Rock Drill BP500-3: This air filter is designed to remove dust and debris from the air intake of a Komatsu BP500-3 rock drill, ensuring clean air for the engine's combustion process.

Chinese: 小松 BP500-3 凿岩机空气滤清器 600-181-9240 (Xiǎosōng BP500-3 záoyánjī kōngqì lǜqīngqì 600-181-9240)
Russian: Воздушный фильтр 600-181-9240 для бурового станка Komatsu BP500-3 (Vozdushnyy fil'tr 600-181-9240 dlya burovogo stanka Komatsu BP500-3)

Komatsu PC200-5 Main Relief Valve: The main relief valve in a Komatsu PC200-5 excavator protects the hydraulic system from overpressure by releasing excess hydraulic fluid when the pressure exceeds a preset limit.

Chinese: 小松 PC200-5 挖掘机主溢流阀 (Xiǎosōng PC200-5 wājuéjī zhǔ yìliú fá)
Russian: Главный предохранительный клапан для экскаватора Komatsu PC200-5 (Glavnyy predokhranitel'nyy klapan dlya ekskavatora Komatsu PC200-5)

Komatsu PC30 Engine 3D84-1 Cylinder Liner: A cylinder liner is a sleeve that fits inside the engine cylinder block of a Komatsu PC30 with a 3D84-1 engine. It forms the inner wall of the cylinder and provides a wear-resistant surface for the piston rings.

Chinese: 小松 PC30 发动机 3D84-1 缸套 (Xiǎosōng PC30 fādòngjī 3D84-1 gāngtào)
Russian: Гильза цилиндра двигателя Komatsu PC30 3D84-1 (Gil'za tsilindra dvigatelya Komatsu PC30 3D84-1)

Komatsu PC75UU-2 Travel Motor Seal Kit: This seal kit is specifically designed for the travel motor of a Komatsu PC75UU-2 excavator. The travel motor powers the movement of the excavator's tracks.

Chinese: 小松 PC75UU-2 挖掘机行走马达修理包 (Xiǎosōng PC75UU-2 wājuéjī xíngzǒu mǎdá xiūlǐ bāo)
Russian: Комплект уплотнений гидромотора хода экскаватора Komatsu PC75UU-2 (Komplekt uplotneniy gidromotora khoda ekskavatora Komatsu PC75UU-2)

Thermostat YM129155-49801 for Komatsu Engine 3D82AE-3: A thermostat regulates the temperature of the engine coolant in a Komatsu engine 3D82AE-3, ensuring the engine operates within its optimal temperature range.

Chinese: 小松发动机 3D82AE-3 节温器 YM129155-49801 (Xiǎosōng fādòngjī 3D82AE-3 jiéwēnqì YM129155-49801)
Russian: Термостат YM129155-49801 для двигателя Komatsu 3D82AE-3 (Termostat YM129155-49801 dlya dvigatelya Komatsu 3D82AE-3)

Common Knowledge about Heavy Equipment Parts

What are the common causes of hydraulic seal failure in excavators? Common causes include contamination of hydraulic fluid, excessive pressure, high operating temperatures, and wear and tear over time.
How often should I replace the filters in my Komatsu excavator? The replacement intervals for filters depend on the type of filter and the operating conditions. Refer to your excavator's maintenance manual for specific recommendations. Generally, air filters, fuel filters, and hydraulic filters have different replacement schedules.
What is the function of a swing motor in an excavator? The swing motor is a hydraulic motor that powers the rotation of the excavator's upper structure, allowing it to swing left and right.

Troubleshooting: Komatsu Excavator Losing Hydraulic Power

Problem: A Komatsu PC200-7 excavator suddenly experiences a significant loss of hydraulic power, making it difficult to operate the boom, arm, and bucket.

Possible Causes and Solutions:

Low Hydraulic Fluid Level: Check the hydraulic fluid reservoir and ensure the level is within the recommended range. Add fluid if necessary.
Clogged Hydraulic Filters: Inspect the hydraulic filters (main filter, pilot filter, etc.) for contamination. Replace any clogged filters with new ones.
Main Pump Issues: The main hydraulic pump might be failing. Listen for unusual noises from the pump. A pressure test of the main pump can confirm if it's delivering the correct pressure. If faulty, the pump may need repair or replacement.
Relief Valve Problems: A stuck or faulty main relief valve could be bypassing hydraulic fluid, leading to a loss of pressure. Inspect and test the relief valve.
Pilot System Malfunction: Issues in the pilot hydraulic system, which controls the main control valve, can also cause a loss of power. Check pilot pressure and inspect pilot lines for leaks or blockages.
Control Valve Issues: A spool in the main control valve might be stuck or damaged, preventing proper distribution of hydraulic fluid. Inspect the control valve for any external damage or leaks. A more detailed inspection might require disassembling the valve.
Internal Leaks: Internal leaks within hydraulic cylinders or motors can also lead to a loss of power. This can be difficult to diagnose and might require specialized equipment and expertise.

Note: Always consult the excavator's service manual and follow proper safety procedures when performing any troubleshooting or maintenance.

Growshine International is a leading import and export trading company specializing in construction machinery parts, heavy truck parts, agricultural machinery parts, and auto parts. We provide high-quality aftermarket and genuine parts for a wide range of equipment.

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