Allied Hydraulic provides professional hydraulic repair and rebuild services for Komatsu construction, mining, and material handling equipment. We specialize in repairing Komatsu hydraulic cylinders and servicing the OEM hydraulic pumps, motors, and valves used throughout Komatsu machines. Our focus is restoring performance, reliability, and service life while minimizing downtime in demanding operating environments.
Allied Hydraulic has extensive experience servicing hydraulic components used in Komatsu equipment across earthmoving, mining, forestry, and industrial applications.
Our technicians understand Komatsu hydraulic systems and follow proven repair processes to return components to reliable working condition.
Every repair is completed with careful inspection and performance testing.
Allied Hydraulic services hydraulic components used across a wide range of Komatsu equipment.
Don’t see yours below? No worries, contact us and we’ll see if we can help.
WB140-2, WB146-5, WB150-2
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, D31A-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-6, D45A-1, D45A-5, D45E-1, D45P-1, D475A-1, D475A-2, D475A-5, 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, 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-12, 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, D83E-1, D83P-1, D85-21B, D85A-12, D85A-18, D85E-21, D85P-18, D85P-21, D85PX-1, D85PX-15
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, PC210LC-11, PC600LC-6, PC600LC-6-CA, PC600LC-6A, PC600LC-6KJ, PC600LC-7, PC600LC-8, PC650LC-11, PC650LC-3, PC650LC-5, PC650LC-8, PC650LC-8EO, PC650SE-3, PC650SE-5
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
CK30, CK30-1, CK35, CK35-1, SK1020-5
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
HD465-2C, HD785-1C, HD785-2C, W120-3, W180-1, WA100, WA100-1, WA100-3, WA100-5, WA120, WA120-1, WA120-3, 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, WA400-1A, 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, WA500-1A, WA500-3, WA500-6, WA500-8, WA600-1, WA600-3, WA600-6, WA600-8, WA700-3, WA700-3B, WA700-3D, WA75-3, WA800-3, WA800-8, WA900-3, WA900-8, WE1350, WE1850, WE2350
Allied Hydraulic provides complete repair and rebuild services for Komatsu hydraulic cylinders used in lifting, steering, swing, tilt, and stabilization applications. Capabilities include seal replacement, rod repair and rechroming, barrel inspection, mount repair, and pressure testing to restore proper performance and extend service life.
Don’t see yours below? No worries, contact us and we’ll see if we can help.
Angle Cylinders
101-63-02030, 114-63-55103, 114-63-55500, 707-00-0A031, 707-00-0A032, 114-63-02031, 707-00-0A031, 707-00-0A032, 114-63-02032, 707-00-0A300, 707-00-0A301, 707-00-0H610
Angle Cylinders (Low S/N up to 291536)
AHC14487
Angle Cylinders With Spherical Bushings
AH169831, AHC12643, AHC15747, AHC15750
Angle Cylinders Without Bushings
AH165689, AH211851, AH216716, 136-3156, 152-6482, 152-6485, 190595A2, 412359A1, AH161764
Arm Cylinders
1900058100
Arm / Crowd / Dipper Cylinders
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, SNS0201-56999
Backhoe Boom Cylinders
395001007, 395001009
Backhoe Bucket Cylinders
395-003-005, 312230674FOURINONECYL
Backhoe Stick / Dipper Arm Cylinders
395002005, 395001007
Boom Cylinders
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
Boom Cylinders (Standard LH)
9175423Y, TH9175423
Boom Cylinders (Standard RH)
9175422Y, TH9175422
Boom (Swing) Cylinders
707-02-07731
Bucket Cylinders
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
Bushing, Bucket Cylinders
707-76-70690, 707-76-10140, 207-63-76170
Dump Cylinders
707-01-01241
Front Loader Tilt Cylinders
707-00-85080, 395013017, 395013019, 395013022, 42N-6C-A1800
Lift Cylinders
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), 418-63-32110, 418-63-32101, 707-00-XZ741, 707-00-XZ740, 707-00-XZ731
LH Swing Cylinders
395005018, 395005022
RH Swing Cylinders
395005009, 395005017, 395005021, 707-02-11520
Stabilizer Cylinders
395011008, 395011005, 395011007, 395011006, 721-00-11540, 721-00-11550, 707-00-0Y830, 707-00-0Y840
Steering Cylinders
707-00-07H80, 707-00-0C190
Stick Cylinders
707-01-0L120
Tilt Cylinders
101-63-02050, 707-01-XY630, 114-63-54102, 114-63-54101, 114-63-56410, 114-63-54301, 114-63-54300, 11G-63-02051, 11G-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
Cylinder Type
Models
Angle Cylinders
101-63-02030, 114-63-55103, 114-63-55500, 707-00-0A031, 707-00-0A032, 114-63-02031, 707-00-0A031, 707-00-0A032, 114-63-02032, 707-00-0A300, 707-00-0A301, 707-00-0H610
Angle Cylinders (Low S/N up to 291536)
AHC14487
Angle Cylinders With Spherical Bushings
AH169831, AHC12643, AHC15747, AHC15750
Angle Cylinders Without Bushings
AH165689, AH211851, AH216716, 136-3156, 152-6482, 152-6485, 190595A2, 412359A1, AH161764
Arm Cylinders
1900058100
Arm / Crowd / Dipper Cylinders
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, SNS0201-56999
Backhoe Boom Cylinders
395001007, 395001009
Backhoe Bucket Cylinders
395-003-005, 312230674FOURINONECYL
John Deere 332 Cylinders
1189745360
Backhoe Stick / Dipper Arm Cylinders
395002005, 395001007
Boom Cylinders
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
Boom Cylinders (Standard LH)
9175423Y, TH9175423
Boom Cylinders (Standard RH)
9175422Y, TH9175422
Boom (Swing) Cylinders
707-02-07731
Bucket Cylinders
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
Bushing, Bucket Cylinders
707-76-70690, 707-76-10140, 207-63-76170
Dump Cylinders
707-01-01241
Front Loader Tilt Cylinders
707-00-85080, 395013017, 395013019, 395013022, 42N-6C-A1800
Lift Cylinders
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), 418-63-32110, 418-63-32101, 707-00-XZ741, 707-00-XZ740, 707-00-XZ731
LH Swing Cylinders
395005018, 395005022
RH Swing Cylinders
395005009, 395005017, 395005021, 707-02-11520
Stabilizer Cylinders
395011008, 395011005, 395011007, 395011006, 721-00-11540, 721-00-11550, 707-00-0Y830, 707-00-0Y840
Steering Cylinders
707-00-07H80, 707-00-0C190
Stick Cylinders
707-01-0L120
Tilt Cylinders
101-63-02050, 707-01-XY630, 114-63-54102, 114-63-54101, 114-63-56410, 114-63-54301, 114-63-54300, 11G-63-02051, 11G-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
John Deere hydraulic cylinders operate in environments that expose them to heavy loads, contamination, and constant cycling. Allied Hydraulic commonly repairs the following John Deere hydraulic cylinder issues:
Seal leakage and blow-by caused by wear, heat, or contamination
Internal bypass resulting in slow movement or loss of holding force
Rod scoring, pitting, or chrome damage from debris or worn wipers
Bent rods caused by side loading or impact during operation
Barrel scoring or internal wear affecting smooth operation
Worn pin bores and mounting points leading to excessive play and misalignment
Each cylinder is fully inspected to identify the root cause of failure and rebuilt to restore reliable performance.
While John Deere machines are manufactured as complete systems, many hydraulic components are supplied by OEM manufacturers. Allied Hydraulic services these components when used in John Deere applications.
Directional control valves, priority valves, and main control valves used in John Deere systems are commonly supplied by OEM valve manufacturers such as Danfoss. Allied Hydraulic services these valves to correct leakage and control issues.
Leaks are often caused by worn seals, damaged rod surfaces, or contamination inside the cylinder. Maintaining fluid levels alone does not prevent seal wear over time, especially in high cycle applications.
Cylinder drift is commonly caused by internal seal bypass, allowing hydraulic fluid to leak past the piston. This results in gradual movement even when controls are neutral.
Yes. In many cases, John Deere hydraulic cylinders can be rebuilt to restore performance and extend service life, reducing the cost compared to full replacement.
Yes. Continuing to operate equipment with leaking or damaged cylinders can lead to additional wear, contamination of the hydraulic system, and increased repair costs over time.
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