Cylinders Inc.
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Komatsu Hydraulic Cylinder Rebuild & Repair Services

Komatsu Hydraulic Cylinder Rebuild & Repair Services

If you’re looking for a Komatsu hydraulic cylinder rebuild, you’ve come to the right place! Our team at Cylinders, Inc. offers reliable repair and remanufacturing services for all major internal components.

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Rely on Our 30 Years’ Worth of Experience Repairing Komatsu Hydraulic Cylinders

Don’t trust just any company with your Komatsu cylinders. We have decades of experience fixing these hydraulic cylinders after they’ve undergone significant wear and tear. When your Komatsu hydraulic cylinders are rendered useless, it hinders your regular operations and results in significant downtime. Allow our seasoned team to evaluate your cylinder and make timely, affordable repairs to keep your operations up and running. We’re always transparent about the work that needs to be done and we have seen a range of Komatsu cylinders in many different conditions. Whether you need a small or large repair, rest assured that your equipment is in good hands.

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Fixing Cylinders for Your Machinery in Chicago
Why Work With Us



WB140-2, WB146-5, WB150-2


PC138USLC, PC138USLC-10, PC138USLC-11, PC138USLC-2, PC138USLC-2-AE, PC138USLC-2A, PC138USLC-2E, PC138USLC-8, PC138USOPT, PC200LC-3, PC200LC-5, PC200LC-6, PC200LC-6LE, PC200LC-7, PC200LC-8, PC200LL-6, PC200Z-6LE, PC20MR-1-K, PC20MR-2, PC20MRX-1, PC210LC-11, PC210LC-6, PC210LC-7K, PC210LCi-11, PC600LC-6, PC600LC-6-CA, PC600LC-6A, PC600LC-6A-KJ, PC600LC-6KJ, PC600LC-7, PC600LC-8, PC650LC-11, PC650LC-3, PC650LC-5, PC650LC-8, PC650LC-8EO, PC650SE-3, PC650SE-5 and other


D135A, D135A-2, D150A-1, D155A-1, D155A-2, D155A-3, D155A-5, D155AX-3, D155AX-5, D155AX-6, D155C-1, D20A-5, D20A-6, D20A-7, D20P-5, D20P-6, D20P-7, D21A, D21A-6, D21A-7, D21E-6, D21P-5, D21P-6, D21P-7, D21Q-6, D275A-5, D275AX-5, D30A-15, D31A, D31A-16, D31A-17, D31A-18, D31E-17, D31E-18, D31E-20, D31EX-21, D31P-16, D31P-17, D31P-18, D31P-20, D31PX-21, D31Q-18, D31S-15, D32E-1, D32P-1, D355A, D355A-3, D355A-5, D37, D375A-2, D375A-3, D375A-5, D37A-2, D37A-5, D37E-1, D37E-2, D37E-5, D37EX-21, D37P-1, D37P-2, D37P-5, D37PX-21, D37PX-22, D38E-1, D38P-1, D39E-1, D39EX-21, D39EX-22, D39P-1, D39PX-21, D39PX-22, D39PX-23, D40P-1, D40P-3, D41A-3, D41E-3, D41E-6, D41P-3, D41P-5, D41P-6, D455A-1, D45A-1, D45E-1, D45P-1, D475A-1, D475A-2, D475A-5EO, D50A, D50A-17, D50P-16, D50P-17, D51EX-22, D51PX-22, D53A-16, D53A-17, D53P-16, D53P-17, D58E-1, D58E-18, D58E-1B, D58P-1, D60A-6, D60A-7, D60A-8, D60E-7, D60E-8, D60P-6, D60P-7, D60P-8, D60PL-7, D60PL-8, D61EX-12, D61EX-15, D61PX-12, D61PX-15, D61PX-23, D63E-1, D65A-8, D65E-12, D65E-6, D65E-7, D65E-8, D65EX-12, D65EX-15, D65EX-18, D65P-12, D65P-7, D65P-8, D65PX-12, D65PX-15, D65S-6, D65WX-12, D68E-1, D68P-1, D75A-1, D75S-2, D80A-18, D80E-18, D80P-18, D83E-1, D83P-1, D85-21B, D85A-12, D85A-18, D85A-21, D85A-21A, D85A-21B, D85E-18, D85E-21, D85EX-15, D85P-18, D85P-21, D85PX-15

Skid steers

CK30, CK30-1, CK35, CK35-1, SK1020-5

Track loaders

D20S-3, D20S-5, D20S-6, D20S-7, D21S-5, D21S-6, D31S-15, D31S-16, D31S-17, D31S-18, D31S-20, D41S-3, D50S-16, D50S-17, D53S-16, D53S-17, D55S-2, D55S-3, D57S-1, D57S-1B, D65S-7, D65S-8, D66S-1, D75S-3, D75S-5

Off-road trucks

210M, 330M, 445E, 530M, 630E, 685E, 730E, 830E, 930E, 960E, HD1500-5, HD1500-7, HD325-3C, HD325-5C, HD325-6, HD325-7, HD352-6C, HD460, HD465-2C, HD465-3C, HD465-5C, HD465-7EO, HD605-5C, HD605-7, HD785-1C, HD785-2C, HD785-3C, HD785-5LC, HD785-7, HM300-1, HM300-1A, HM300-5, HM350-1, HM400-2, HM400-3, HM400-5, WA800-1, WA800-2

Wheel loaders

HD465-2C, HD785-1C, HD785-2C, W120-3, W180-1, WA100, WA100-1, WA100-3, WA100-5, WA120, WA120-1, WA120-3L, WA150-5, WA150-6, WA180-1, WA180-3, WA180-3MC, WA200-5, WA200-6, WA200-8, WA250-1, WA250-3, WA250-3L, WA250-3MC, WA250-5, WA250-6, WA250-6PZ, WA270-7, WA270-8, WA270PT-3, WA30-1, WA300-1, WA300L-3, WA320-1, WA320-3, WA320-3L, WA320-5, WA320-6, WA320-7, WA320-8, WA350-1-B, WA350-1M, WA380-1, WA380-3, WA380-3MC, WA380-5, WA380-6, WA380-7, WA380-8, WA40-3, WA400-1-A, WA400-3, WA400-5, WA420-1, WA420-3, WA430-5, WA430-6, WA450, WA450-1A, WA450-2, WA450-3, WA450-3L, WA450-5L, WA450-6, WA470-1, WA470-3, WA470-5, WA470-7, WA470-8, WA475-10, WA480-5, WA480-5L, WA480-6, WA480-8, WA50-3, WA500-1, WA500-1-A, WA500-3, WA500-6, WA500-8, WA600-1, WA600-3, WA600-6, WA600-8, WA700-3, WA700-3-B, WA700-3-D, WA75-3, WA800-3, WA800-8, WA900-3, WA900-8, WE1350, WE1850, WE2350

We Work With

Most Common Komatsu Machinery We Work With

We work with a variety of different machinery and offer Komatsu hydraulic cylinder repair service for the following types of machines:

Backhoe boom cylinder

395001007, 395001009

Backhoe bucket cylinder

395-003-005, 312230674FOURINONECYL

Backhoe stick / dipper arm cylinder

395002005, 395001007

Front loader tilt cylinder

707-00-85080, 395013017, 395013019, 395013022, 42N-6C-A1800

Lh swing cylinder

395005018, 395005022

Rh swing cylinder

395005009, 395005017, 395005021, 707-02-11520

Stabilizer cylinder

395011008, 395011005, 395011007, 395011006, 721-00-11540, 721-00-11550, 707-00-0Y830, 707-00-0Y840, 395011006, 395011007, 395011005, 395011008

Swing cylinder


Arm/crowd/dipper cylinder

AT111849, RD118-67603, RD118-67602, RD118-67601, RD108-67600, RC408-67600, RC418-67602, RC418-67600, 14521659, 14523658, 14534547, 14522908, 14512429, 14563977, 7008802, 1046-00020, KTV0932, 20G-63-K1502, 21K-63-66500, 21K-63-66501, 21K-63-66301, 20363X2323(SN50201-56999) and other.

Bucket cylinder

2266111500, 707-00-XT340, 707-00-0H752, 707-00-0H751, 707-01-0K300, 209-63-02540, 209-63-02041, 209-63-02130, 209-63-02040, 209-63-02042, 21M-63-X2131, 21M-63-02131, 20U-63-02030, 707-00-XE660, 707E100750, 721-13-16450, 707-E1-00750, 208-63-02531, 20T-63-02320 and other.

Stick cylinder


Boom cylinder

707-00-0G270, 707-E1-00200, 20R-63-02251, 707-00-0F450, 707-00-0Y570, 3F2087060, 3F2087065, 3F2087058, 3F2087069, 21U-63-02011, 20S-63-56500, 20S-63-02231, 207-63-52100, 207-63-52200, 207-63-02501, 207-63-02301, 207-63-52100, 207-63-52200, 207-63-02501, 207-63-02301, 707-01-XZ920 and other.

Bushing, bucket cylinder

707-76-70690, 707-76-70690, 707-76-70690, 707-76-70690, 707-76-70690, 707-76-70690, 207-63-76170, 207-63-76170, 207-63-76170, 707-76-10140, 707-76-10140, 707-76-10140, 707-76-10140

Lift cylinder

42U-63-12110, 707-01-22111, 707-01-22112, 707-01-20011(SN:10001-10299), 707-01-20012(SN:10300-19999), 707-01-0K570, 707-01-03500, 707-01-0F060, 707-01-03511, PN-707-01-14131(10001-19999), PN-707-01-03510(20001-UP), SN-BREAK, 418-63-32110, 418-63-32101, 707-00-XZ741, 707-00-XZ740, 707-00-XZ731 and other.

Angle cylinder

101-63-02030, 114-63-55103, 114-63-55500, 707-00-0A031, 707-00-0A032, 114-63-55500, 707-00-0A031, 707-00-0A032, 114-63-02031, 707-00-0A031, 707-00-0A032, 114-63-02031, 114-63-02032, 707-00-0A031, 707-00-0A032, 707-00-0A300, 707-00-0A301, 707-00-0H610, 707-00-0A300, 707-00-0A301 and other.

Tilt cylinder

101-63-02050, 707-01-XY630, 114-63-54102, 114-63-54101, 114-63-56410, 114-63-54301, 114-63-54300, 11G-63-02051, 114-63-02041, 11G-63-02051, 114-63-02041, 11G-63-02051, 114-63-02041, 12F-63-52500, 124-63-64100, 124-63-02222, 707-E0-00570, 707-11-12C60, 144-63-52200, 14F-63-03030, 113-63-32500 and other.

Steering cylinder

707-00-07H80, 707-00-0C190

(standard) boom cylinder lh

9175423Y, TH9175423

(standard) boom cylinder rh

9175422Y, TH9175422

Angle cylinder (low s/n up to 291536)


Angle cylinder with spherical bushings

AH169831, AHC12643, AHC15747, AHC15750

Angle cylinder without bushings

AH165689, AH211851, AH211851, AH216716, 136-3156, 152-6482, 152-6485, 190595A2, 412359A1, AH161764

Arm cylinder


Dump cylinder


We Work With

Most Common Komatsu Hydraulic Cylinders We Work With

We're prepared to handle a range of different hydraulic cylinders, repairing any and all issues and components that are slowing down your hard work.


Types of Komatsu Cylinder Repairs We Handle

Depending on how much internal damage has taken place, Komatsu hydraulic cylinders can be repaired before they require total replacement.

  • Reseals: This repair involves sealing any gaps that exist between parts. It usually involves a mixture of dynamic seals for moving parts and static seals around the piston and rod. If there are undamaged core components, they’re returned to their rightful position
  • Repairs: As long as early warning signs are identified, Komatsu hydraulic cylinder rebuilds can be avoided. Repairs involve fixing parts or components that have been slightly damaged and the process is usually fast and easy.
  • Rebuilds: In the case that the components are too old or worn down, a rebuild is often preferred. Any reusable components are salvaged, making this a cost-effective way to get more life out of your equipment.
Fixing Cylinders for Your Machinery in Chicago
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Ready to Get Your Komatsu Cylinders Repaired?

If you’re in need of a Komatsu cylinder repair, our team at Cylinders, Inc. would love to assist you! Get in touch with us today to start the process.

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Frequently Asked Questions

What’s your turnaround time for Komatsu hydraulic cylinder repairs?

How quickly we can repair your Komatsu hydraulic cylinder depends on how much damage there is. We will look over your cylinder, diagnose it, and send you a repair quote and authorization form. The amount of time it takes us to complete the repair depends on parts availability, lead time, and our current repair schedule. We’ll always keep you informed of our progress. 

What are the signs of a Komatsu broken cylinder?

Contamination is responsible for a large majority of Komatsu cylinder failures. It’s important that operators are aware of the early warning signs because in many cases, efficiency losses come on slowly. You might not notice the issue until it is too late. 

To avoid a Komatsu cylinder rebuild, be aware of the following issues:

  • Contaminated oil;
  • Unexplained leaks;
  • Increased cycle times;
  • Damaged seals;
  • Decreased productivity and speed.

How often should I have my Komatsu hydraulic cylinder serviced?

The frequency of service for Komatsu hydraulic cylinders will depend on several factors, including the type of equipment, the operating conditions, and the frequency of use. We recommend consulting the Komatsu equipment manual or contacting a Komatsu dealer for guidance on the appropriate service interval for your specific equipment.

Are genuine Komatsu parts necessary for repairing Komatsu hydraulic cylinders?

We highly recommend using genuine Komatsu parts when repairing Komatsu hydraulic cylinders. These parts are specifically designed and manufactured to meet the rigorous standards set by Komatsu, ensuring that your equipment operates at optimal performance.