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SWAFLY Premium Hitachi ZX240-3G Boom Cylinder with Part Number 9234729HSP and 9234729 for Excavators

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SWAFLY Hitachi ZX240-3G Boom Cylinder 9234729HSP 9234729 Boom Hydraulic Cylinder for Excavator
Can't find your part? SWAFLY supports custom design and development for various engineering machinery spare parts, including specific hydraulic cylinders (Boom, Arm, Bucket Cylinders) and other complex components. Contact us with your specifications!

SWAFLY Premium Hitachi ZX240-3G Boom Cylinder with Part Number 9234729HSP and 9234729 for Excavators

SWAFLY is proud to offer top-tier engineering machinery parts, focusing on reliability and performance. This product listing features the essential Boom Hydraulic Cylinder compatible with the Hitachi ZX240-3G excavator. The precise and crucial part number for this component is 9234729HSP, with its non-hyphenated variant 9234729HSP. We ensure that our components, including this boom cylinder, meet the demanding standards of heavy construction machinery. Trust SWAFLY for your excavator spare parts needs, ensuring minimal downtime and maximum operational efficiency. We are your reliable source for Hitachi parts and other construction machinery components.

Detailed Product Information and SWAFLY Expertise

As a leading supplier of engineering machinery accessories, SWAFLY specializes in critical components like the Hitachi ZX240-3G Boom Cylinder. This cylinder, part number 9234729HSP and 9234729HSP, is vital for the smooth and powerful operation of the excavator's boom. Our extensive inventory covers a wide range of heavy equipment parts, including hydraulic pumps, travel motors (also known as final drive), swing devices, main control valves, and various undercarriage parts. When searching for genuine excavator parts or high-quality aftermarket excavator parts, look no further than SWAFLY. We facilitate smooth excavator hydraulic pump repair and supply all necessary engine parts and seals.

We are dedicated to providing excellent excavator engine maintenance solutions and offering a vast selection of custom hydraulic cylinder services. Our commitment extends to providing comprehensive support for large excavator component sourcing and specialized mini excavator hydraulic system parts. Explore our full range of products at: www.swaflyparts.com, www.hitachi-isuzuparts.com, www.mttparts.com, www.kubotaengine.ca, www.machineryengine.com. We focus on being the premier reliable construction parts distributor for Hitachi ZX series parts and more.

Essential Engineering Machinery Components Glossary

Understanding the components is key to maintaining your heavy machinery. Here are 10 essential terms:

  • Travel Motor/Final Drive: Installed on the undercarriage, it converts hydraulic pressure into torque to drive the tracks or wheels. Example: Caterpillar 320D Final Drive.

  • Swing Device: Located in the machine's upper structure, it allows the excavator's cab and boom to rotate. Example: Komatsu PC200-8 Swing Reduction Gear.

  • Piston Pump: Often the main hydraulic pump, typically mounted to the engine, it generates the primary flow and pressure for the hydraulic system. Example: Volvo EC210B Main Hydraulic Pump.

  • Main Control Valve: Located in the main hydraulic circuit, it directs hydraulic fluid flow to various actuators like cylinders and motors. Example: Hyundai R305LC-7 Control Valve Assembly.

  • Track Adjuster: Positioned in the track frame/undercarriage, it maintains the proper tension of the track chain. Example: John Deere 240G Track Tensioner Cylinder.

  • Boom Cylinder: Attached to the main frame and the boom, it raises and lowers the boom. Example: Case CX330 Boom Hydraulic Ram.

  • Arm Cylinder: Connects the boom to the arm, controlling the in-and-out movement of the arm. Example: Liebherr R944 Arm Cylinder Seal Kit.

  • Bucket Cylinder: Connects the arm to the bucket, controlling the tilting action of the bucket. Example: Kobelco SK260 Bucket Hydraulic Cylinder.

  • Slewing Bearing: Located between the undercarriage and the superstructure, it facilitates smooth rotation. Example: Doosan DX300LC Slewing Ring Bearing.

  • Cabin Assembly: The operator's compartment, attached to the superstructure, providing control and protection. Example: JCB JS370 Cabin Glass Kit.

These parts are integral to heavy equipment maintenance and repair and are all part of SWAFLY's core offerings as a trusted excavator parts supplier.

Featured Hitachi Excavator Parts Table

Below is a selection of high-demand Hitachi excavator spare parts available from SWAFLY, emphasizing Boom, Arm, and Bucket Cylinders, as well as Travel Devices and Control Valves.

No.BrandPart Number(s)ModelComponent
1Hitachi9306368ZX350-5track adjuster
2Hitachi9312060ZX290-5track adjuster
3HitachiYA00028290H3, YA00028290H3ZX890LCH-5ACYL.;BOOM
4HitachiYA00028291H3, YA00028291H3ZX890LCH-5ACYL.;BOOM
5HitachiYA00028294H3, YA00028294H3ZX890LCH-5ACYL.;BUCKET
6HitachiYA00028292H3, YA00028292H3ZX890LCH-5ACYL.;ARM
7Hitachi4697128ZX670LCH-5GCYL.;BOOM
8Hitachi4697129ZX670LCH-5GCYL.;BOOM
9HitachiYA00028285H1, YA00028285H1ZX490LCH-5ACYL.;BOOM
10HitachiYA00028286H1, YA00028286H1ZX490LCH-5ACYL.;BOOM
11Hitachi4637751HCMC, 4637751HCMCZX450-3CYL.;BOOM
12HitachiYA00023611HCMC, YA00023611HCMCZX130-5A4JJ1XKSA03 Engine
13Hitachi4625874RM, 4625874RMZX330-36HK1 Engine
14Hitachi9312271H, 9312271HZX200-5ACYL.;ARM
15Hitachi9309801H, 9309801HZX240-5ACYL.;BOOM
16Hitachi9309802H, 9309802HZX240-5ACYL.;BOOM
17Hitachi9309803H, 9309803HZX240-5ACYL.;ARM
18Hitachi9309804H, 9309804HZX240-5ACYL.;BUCKET
19Hitachi9309805H, 9309805HZX280-5G/300-5ACYL.;BOOM
20Hitachi9309806H, 9309806HZX280-5G/300-5ACYL.;BOOM
21Hitachi9309806XXXH3, 9309806XXXH3ZX280-5G/300-5ACYL.;BOOM
22Hitachi9309807XXXH3, 9309807XXXH3ZX280-5G/300-5ACYL.;ARM
23Hitachi9309808XXXH3, 9309808XXXH3ZX280-5G/300-5ACYL.;BUCKET
24Hitachi9307832XXXH1, 9307832XXXH1ZX330-5ACYL;BOOM(R)
25Hitachi9307833XXXH1, 9307833XXXH1ZX330-5ACYL;BOOM(L)
26Hitachi9312267XXXH1, 9312267XXXH1ZX330-5ACYL;ARM
27HitachiYA00028287H1, YA00028287H1ZX470-5G/490-5ACYL.;ARM
28Hitachi4697130XXXH3, 4697130XXXH3ZX670-5G/690-5ACYL.;ARM
29Hitachi4697132XXXH3, 4697132XXXH3ZX670-5G/690-5ACYL.;BUCKET
30HitachiYB00007154H3//9243839, YB00007154H39243839ZX240-5ATRAVEL-DEVICE
31HitachiYA00086816H3//YA00037264H3, YA00086816H3YA00037264H3ZX870-5G/890-5AVALVE;CONTROL
32HitachiYA00037263H3, YA00037263H3ZX670-5G/690-5AVALVE;CONTROL
33HitachiYA00028292ZX890-5ACYL;ARM
34HitachiYA00028294ZX890-5ACYL.;BUCKET
35HitachiYA00023717ZX 360-5A6HK1 engine
36Hitachi9257596RMZX330-3Pump Device Assy
37Hitachi8076541ZX210-5H links
38HitachiYA00040883
guard
39HitachiYB60002115, YB60002116ZX330-5ATravel Device
40HitachiYB60003036, YB60003210ZX350LC-7Travel Device
41Hitachi4668620RMZX400LCH-5ADrive Motor
42Hitachi9242907RMZX240-3/-3G/-5ADrive Motor
43Hitachi9281841RMZX330-3/-3G/-5G/-5ADrive Motor
44Hitachi9281842RMZX330-3/-3G/-5G/-5ADrive Motor
45HitachiYB00002172RMZX170LC-5ASwing Device
46HitachiYB60000181RMZX240-5A/ZX260LCH-5ASwing Device
47HitachiYA00023705RMZX200-5AEngine
48HitachiYA00023714RMZX300-5AEngine
49HitachiYA00023717RMZX330-5A/ZX400LCH-5AEngine
50HitachiYB60001526RMZX300-5APump Device
51HitachiYD00013056RMZX70-5G/ZX70-5APiston Pump
52Hitachi9260886RMZX330-3/ZX330-5ASingle Pump
53HitachiYB60000802RMZX300-5ASingle Pump
54Hitachi9257346RMZX270-3Pump assy
55Hitachi9257596RMZX330-3Pump assy
56Hitachi4680289ZX850-3CAB-ASSY
57Hitachi4688424ZX210-3-AMSCAB
58Hitachi4664059ZX850-3CAB-ASSY
59Hitachi4456025ZX75US-ACAB
60Hitachi4665069ZX330-3CAB
61Hitachi4684104ZX210H-3CAB
62Hitachi4684376ZX210-3-AMSCAB
63Hitachi4676661ZX170W-3CAB
64Hitachi4679733ZX225US-3CAB
65Hitachi4671395ZX225USLC-3MCAB
66Hitachi9255047ZX80SB-HCMECAB
67Hitachi4664052ZX470R-3FCAB-ASSY
68Hitachi4701969ZX135USL-3CAB
69Hitachi4693950ZX75US-3CAB
70HitachiYA00038618ZX490LCH-6CAB
71HitachiYA00056769ZX380LC-6NCAB
72HitachiYA00038612ZX530LCH-6CAB
73HitachiYA60044286ZX470LC-6CAB
74HitachiYA60044290ZX670LC-6CAB
75HitachiYA00038614ZX670LC-6CAB
76HitachiYD00009465ZX75USK-5BCAB
77HitachiYD00003848ZX85US-5ACAB
78HitachiYD00006071ZX85US-5ACAB
79Hitachi4675684ZX135US-3CAB
80HitachiYD00007123ZX85USB-5ACAB
81HitachiYD0001092675GCAB
82HitachiYD60001182ZX70-5GCAB
83HitachiYA00037705ZX350LC-5NCAB
84Hitachi4693630ZX85USB-3CAB
85HitachiYA00038692ZX135USL-5BCAB
86HitachiYA00037707250G LC-IT4CAB
87HitachiYA00037706ZX160LC-5NCAB
88HitachiYD00008908ZX55U-5ACAB
89Hitachi9219571ZX450HCabin
90Hitachi9276399ZX200-3Cabin
91HitachiH490386ZX360H-3GCabin
92HitachiH490612HZX120Cabin
93HitachiYD00011376H1, YD00011376H1ZX60C-5ACabin
94Hitachi9257157HCMC, 9257157HCMCZX240-3Swing Device
95HitachiYA00000721H3, YA00000721H3ZX280-5G/300-5AVALVE;CONTROL
96HitachiYA00000717H3, YA00000717H3ZX240-5AVALVE;CONTROL
97HitachiYA00000734H3, YA00000734H3ZX330-5AVALVE;CONTROL
98Hitachi4602026HCMC, 4602026HCMCZX240-3VALVE;CONTROL
99Hitachi9234729HSP, 9234729HSPZX240-3GCYL.;BOOM
100Hitachi9246751HSP, 9246751HSPZX240-3GCYL.;BUCKET
101HitachiYA60059299H, YA60059299HZX180CYL.;ARM
102HitachiYA60059297H, YA60059297HZX180CYL.;BOOM(R)
103HitachiYA60059298H, YA60059298HZX180CYL.;BOOM (L)
104HitachiYA60070685H1, YA60070685H1ZX200-5ACYL.;ARM
105HitachiYA60059300H, YA60059300HZX180CYL.;BUCKET
106HitachiZA60001970ZX200-5ACYL.;BOOM
107HitachiZA60001971ZX200-5ACYL.;BOOM
108HitachiYA60082224H1, YA60082224H1ZX120-5ACYL.;ARM
109HitachiYA60028504H1, YA60028504H1ZX130-5ACYL.;BOOM
110HitachiYA60028505H1, YA60028505H1ZX130-5ACYL.;BOOM
111HitachiYA60070686H1, YA60070686H1ZX200-5ACYL.;BUCKET
112HitachiYA60028507H1, YA60028507H1ZX130-5ACYL;BUCKET
113Hitachi9323701HCMC, 9323701HCMCZX160-5BCYL.;BOOM
114Hitachi9323702HCMC, 9323702HCMCZX160-5BCYL.;BOOM
115HitachiYA60082225H1, YA60082225H1ZX120-5ACYL.;BUCKET
116Hitachi9275650ZX60-5GCYL.;BOOM
117Hitachi9275650HZX60-5GCYL. BOOM
118HitachiZA60001399ZX60C-6ACYL.;BOOM
119HitachiZA60001400ZX60C-6ACYL.;ARM
120HitachiZA60001401ZX60C-6ACYL.;BUCKET
121Hitachi9275649HZX60-5GCYL;BUCKET
122Hitachi9289617ZX130-5ATRAVEL-DEVICE
123Hitachi9261222ZX200-5ATRAVEL-DEVICE
124HitachiZA60002095ZX200C-6ATRAVEL-DEVICE
125HitachiZA00002711ZX200C-6ATRAVEL-DEVICE
126Hitachi9243839ZX240-5ATRAVEL-DEVICE
127Hitachi9281921ZX330-5ATRAVEL-DEVICE
128Hitachi9302718ZX490-5ATRAVEL-DEVICE

Common Machinery Fault Diagnosis and Solution

Fault: Slow or Weak Boom Operation on Caterpillar 349F L Excavator

Description: The operator reports that the boom cylinder movement on the Caterpillar 349F L Excavator is noticeably slow or weak, particularly under load. This affects the overall lifting capacity and digging efficiency.

Diagnosis & Solution: This is a classic symptom of a hydraulic system issue. The problem often lies in one of the following areas: a faulty main hydraulic pump, a leaking boom cylinder seal, or a sticking/worn spool in the main control valve.

  • Check 1: Hydraulic Fluid Level and Quality. Ensure the hydraulic oil is at the correct level and is clean. Low fluid can cause cavitation and weak pressure.

  • Check 2: Pressure Testing. Use a pressure gauge to test the main pump pressure and the pressure at the boom cylinder ports. Low pressure indicates a problem in the pump or the relief valve.

  • Check 3: Cylinder Seal Inspection. Internal leakage in the Caterpillar 349F L Boom Cylinder due to worn seals is a common culprit. If oil is bypassing the piston, the cylinder will creep or be weak. The solution is to replace the seals using a high-quality boom cylinder repair kit.

  • Check 4: Control Valve Spool. A worn or sticking spool in the Caterpillar 349F L Main Control Valve can cause fluid bypass. Disassembly and inspection of the valve assembly are required, followed by repair or replacement of the faulty section.

We stock all necessary hydraulic repair seals and control valve components for a quick and effective fix for your heavy duty equipment repair needs.

Understanding the Hitachi ZX240-3G Boom Cylinder

The Boom Cylinder (9234729HSP, 9234729HSP) on the Hitachi ZX240-3G is a double-acting hydraulic actuator responsible for the vertical movement of the excavator's boom. It's a fundamental part of the machine's lifting and digging capability. Constructed from high-strength steel, the cylinder converts the pressurized hydraulic fluid from the piston pump, regulated by the main control valve, into linear mechanical force. The proper function of the Boom Hydraulic Cylinder is absolutely critical for excavator performance optimization and safe operation. Regular inspection for leaks and wear, and using premium cylinder seal kits, is essential to prolong its service life. SWAFLY provides reliable components for the entire hydraulic system, including specialized hydraulic motor replacement and gear pump spare parts, ensuring maximum productivity for your Hitachi construction equipment.

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SWAFLY Premium Hitachi ZX240-3G Boom Cylinder with Part Number 9234729HSP and 9234729 for Excavators
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