Allied Hydraulic provides professional hydraulic repair and rebuild services for Hitachi construction and mining equipment. We specialize in repairing Hitachi hydraulic cylinders and servicing the OEM hydraulic pumps, motors, and valves used throughout Hitachi machines. Our focus is restoring performance, reliability, and service life while minimizing downtime in demanding applications.
Allied Hydraulic has extensive experience servicing hydraulic components used in Hitachi equipment across construction, earthmoving, and mining applications.
Our technicians understand the operating demands placed on Hitachi machines and follow proven repair processes to return components to reliable working condition.
Each repair is completed with careful inspection and testing to ensure dependable performance in the field.
Allied Hydraulic services hydraulic components used in a wide range of Hitachi equipment, including wheel loaders, excavators, and haul trucks.
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ZW30-5B, ZW50-5B, ZW80-5B, ZW100-6, ZW120-6, ZW140-6, ZW150PL-6, ZW150-6, ZW160-7, ZW160PL-7, ZW180-6, ZW180PL-6, ZW180-7, ZW180PL-7, ZW220-6, ZW220-7, ZW250-6, ZW310-6, ZW310-7, ZW330-6, ZW370-6, ZW370-6 HC, ZW550-6
ZX130-6, ZX130-7H, ZX130-5G LA, ZX135US-6, ZX135US-7H, ZX160LC-6, ZX160LC-7H, ZX190LC-7H, ZX200LC-5G LA, ZX210LC-6, ZX210LC-7H, ZX210LC-7H SLF, ZX245USLC-6, ZX245USLC-7H, ZX250LC-6, ZX250LC-7H, ZX250LC-7 SLF, ZX300LC-6, ZX300LC-7H, ZX345USLC-6, ZX345USLC-7H, ZX350LC-6, ZX350LC-7H, ZX350LC-7 SLF, ZX490LC-6, ZX490LC-7H, ZX690LC-6, ZX690LC-7H, ZX890LC-6, ZX890LC-7H, ZX17U-5N, ZX26U-5N, ZX30U-5N, ZX35U-5N, ZX50U-5N, ZX60USB-5N, ZX75US-5N, ZX75US-7, ZX85USB-5N, ZX85USB-7, EX1200-7 FCO, EX1200-7B T4F, EX2000-7 FCO, EX2000-7B T4F, EX2000-7E ELEC, EX2600-7 FCO, EX2600-7B T4F, EX2600-7E ELEC, EX3600-7 FCO, EX3600-7B T4F, EX3600-7E ELEC, EX5600-7 FCO, EX5600-7B T4F, EX5600-7E ELEC, EX8000-7 FCO, EX8000-7B T4F, EX8000-7E ELEC
EH3500AC-3 NA, EH3500AC-3 LA, EH4000AC-3 NA, EH4000AC-3 LA,
EH5000AC-3 NA, EH5000AC-3 LA
Allied Hydraulic provides complete repair and rebuild services for Hitachi hydraulic cylinders used in excavation, loading, grading, and mining applications. Our capabilities include seal replacement, rod repair and rechroming, barrel inspection, mount repair, and pressure testing. Each cylinder is rebuilt to restore proper function and extend service life under demanding operating conditions.
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Boom (Canopy) Cylinders
4694916, 4694917, 4694918, 4694920
Boom (Cab) Cylinders
9242055, 9242056, 9256112, 9235112, 9293662, 4447054, 4447055, 9267112, 9267115, 9241122, 9256115
Arm Cylinders
4694907, 4694908, 4694909, 4694910, 9242057, 9242058, 9256106, 9235113, 9293663, 4447113, 4447114, 9267103, 9267105, 9241133, 9256105
Bucket Cylinders
4694901, 4694902, 4694903, 4694904, 9235101, 9235102, 9293602, 4447202, 4447203, 9267203, 9267205, 9241255, 9257203
Blade Cylinders
4694924, 4694925, 4694926, 4694927
Boom (Swing) Cylinders
4694921, 4694922, 4694923, 9242059, 9242060, 9256113, 9235115, 9293671, 4447201, 9267113, 9241256, 9257202
Cylinder Type
Models
Arm Cylinders
4694907, 4694908, 4694909, 4694910, 9242057, 9242058, 9256106, 9235113, 9293663, 4447113, 4447114, 9267103, 9267105, 9241133, 9256105
Boom (Cab) Cylinders
9242055, 9242056, 9256112, 9235112, 9293662, 4447054, 4447055, 9267112, 9267115, 9241122, 9256115
Boom (Canopy) Cylinder
4694916, 4694917, 4694918, 4694920
Boom (Swing) Cylinders
4694921, 4694922, 4694923, 9242059, 9242060, 9256113, 9235115, 9293671, 4447201, 9267113, 9241256, 9257202
Blade Cylinders
4694924, 4694925, 4694926, 4694927
Bucket Cylinders
4694901, 4694902, 4694903, 4694904, 9235101, 9235102, 9293602, 4447202, 4447203, 9267203, 9267205, 9241255, 9257203
Hitachi hydraulic cylinders operate in high load, high cycle environments where wear and damage can develop over time. Allied Hydraulic commonly repairs the following Hitachi hydraulic cylinder issues:
Seal failure and external leakage caused by age, heat, or contamination
Internal bypass and pressure loss resulting in weak or drifting cylinder movement
Rod scoring, pitting, or chrome damage from debris, corrosion, or worn wipers
Bent or damaged rods due to side loading or impact during operation
Barrel scoring or internal wear affecting smooth operation and holding ability
Worn pin bores and mounting points leading to excessive play and accelerated wear
Each Hitachi hydraulic cylinder is fully inspected to identify the root cause of failure. Repairs are completed to restore proper function, improve reliability, and extend service life in demanding construction and mining applications.
While Hitachi machines are manufactured as complete systems, many hydraulic components are supplied by OEM manufacturers. Allied Hydraulic services these components when used in Hitachi applications.
Swing motors, travel motors, and auxiliary motors used in Hitachi equipment are commonly sourced from OEM manufacturers including Rexroth. Allied Hydraulic rebuilds these motors to ensure dependable torque and smooth operation.
Directional control valves and main control valves used in Hitachi systems are commonly supplied by OEM valve manufacturers such as Danfoss. Allied Hydraulic services these valves to correct leakage and control issues.
Common signs include hydraulic leaks, slow or uneven movement, loss of holding force, or visible rod damage. These issues often indicate seal wear or internal damage that can be corrected through rebuild.
Yes. Allied Hydraulic services hydraulic cylinders and components used in Hitachi mining excavators and haul trucks, including large frame machines.
Yes. Allied Hydraulic regularly repairs older and legacy Hitachi hydraulic cylinders that are no longer supported by the OEM.
Yes. All repaired Hitachi cylinders and components are tested to verify sealing, pressure, and operational performance prior to return.
We’re looking forward to helping you. Whether you have questions about products or services, our team is ready to help you KICK@$$
