COGENG Komatsu Universal Hydraulic Cylinder Seal Kit 707-99-23040 | Multi-Application Premium Rebuild Kit for Excavators, Dozers & Loaders
  • COGENG 707-99-23040 Komatsu Universal Hydraulic Cylinder Seal Kit,Excavator Solenoid Valve | Excavator Pressure Switch | Excavator Revolution Sensor | Excavator Wiring Harness | Excavator Throttle Motor --- COGENG High-Qulity Parts Service GAOGENG Provider,COGENG Komatsu Universal Hydraulic Cylinder Seal Kit 707-99-23040 | Multi-Application Premium Rebuild Kit for Excavators, Dozers & Loaders
  • COGENG 707-99-23040 Komatsu Universal Hydraulic Cylinder Seal Kit,Excavator Solenoid Valve | Excavator Pressure Switch | Excavator Revolution Sensor | Excavator Wiring Harness | Excavator Throttle Motor --- COGENG High-Qulity Parts Service GAOGENG Provider,COGENG Komatsu Universal Hydraulic Cylinder Seal Kit 707-99-23040 | Multi-Application Premium Rebuild Kit for Excavators, Dozers & Loaders

COGENG 707-99-23040 Komatsu Universal Hydraulic Cylinder Seal Kit


Product name: Komatsu  Hydraulic Cylinder Service Kit  
Part No:  707-99-23040  7079923040
Size:40 mm / 80 mm
Model Number:For     PC35, PC45, PC55 WA120, WA200, WA250 etc. 
Material:Lron+Rubber
Packing:PP bag inside, carton box outside
Payment Terms:Western Union, L/C, T/T, MoneyGram, D/A, D/P
MOQ:Acceptable trial order
Shipping Mode:By air, by sea, by express(Fedex, UPS, DHL, TNT, etc.)
Place of Origin:Guangdong, China
Brand name:COGENG
CertifiCATEEion:ISO9001
Supply :500PCS
  • COGENG 707-99-23040 Komatsu Universal Hydraulic Cylinder Seal Kit,Excavator Solenoid Valve | Excavator Pressure Switch | Excavator Revolution Sensor | Excavator Wiring Harness | Excavator Throttle Motor --- COGENG High-Qulity Parts Service GAOGENG Provider,COGENG Komatsu Universal Hydraulic Cylinder Seal Kit 707-99-23040 | Multi-Application Premium Rebuild Kit for Excavators, Dozers & Loaders

Desciption

Parameter Specification Testing Standard
Pressure Range 5-35 MPa (725-5,076 PSI) ISO 10766
Temperature Range -40°C to +125°C (-40°F to +257°F) ASTM D2000
Seal Material Density 1.28-1.37 g/cm³ (variable by component) ASTM D792
Compression Set ≤ 11% (70 hours @ 110°C) ASTM D395 Method B
Tensile Strength Range 16-22 MPa (2,321-3,191 PSI) ASTM D412
Elongation at Break 250-320% (material dependent) ASTM D412
Tear Strength ≥ 38 kN/m ASTM D624 Die C
Volume Swell ≤ 8% in mineral oil (168 hrs @ 100°C) ASTM D471
Friction Coefficient 0.12-0.22 (adaptive design) ASTM D1894 modified
Thermal Conductivity 0.27-0.33 W/m·K ASTM E1225
Specific Heat Capacity 1.80-1.95 kJ/kg·K ASTM E1269
Pressure-Velocity (PV) Limit 15 MPa·m/s continuous ISO 13738



Compatible Machine Models & Applications

Equipment Type Komatsu Models Typical Cylinder Applications Kit Suitability
Mini Excavators PC35, PC45, PC55 Boom, Arm, Bucket Full compatibility
Medium Excavators PC130, PC160, PC200 Stick, Bucket Full compatibility
Large Excavators PC210, PC228, PC240 Arm, Bucket (secondary) Limited to certain cylinders
Wheel Loaders WA120, WA200, WA250 Lift, Tilt Full compatibility
Crawler Dozers D31, D37, D39 Blade Lift, Tilt Full compatibility
Skid Steers SK815, SK820 Lift, Tilt Full compatibility


Detailed Model Compatibility

Model Series Specific Models Cylinder Types Notes
PC200 Series PC200-6, PC200-7, PC200-8 Bucket, Arm (secondary) Check bore size
PC300 Series PC300-6, PC300-7 Smaller cylinders only Not for main boom
WA200 Series WA200-5, WA200-6, WA200-7 Lift, Tilt Full compatibility
D30 Series D31, D37, D39 All blade cylinders Full compatibility
GD600 Series GD655, GD675 Moldboard cylinders Check specifications



Component Selection Guide by Application

Cylinder Type Recommended Components Special Instructions
High-Pressure Use all backup rings, heavy cushions Test to 35 MPa minimum
High-Cycle Use premium rod seals, enhanced wipers Monitor temperature
Side-Load Use extra wear bands, heavy-duty guides Check alignment
Contaminated Use multi-stage wipers, extra scrapers Frequent fluid changes



Decompose pictures


Parts list
NO Number Name Qty
K01 203-32-05131 Shoe Bolt and Nut Kit
203-32-51241 • Bolt 50
203-32-61220 • Nut 50
K02 13F-32-05010 Shoe Bolt and Nut Kit
13F-32-21221 • Bolt 50
203-32-61220 • Nut 50
K03 707-99-14960 Service Kit, Lift Cylinder
02896-11009 • O-ring 2
07000-12070 • O-ring 1
07000-12075 • O-ring 1
07000-12085 • O-ring 1
07145-00045 • Seal, Dust 4
707-35-52760 • Ring, Back-up 1
707-39-75190 • Ring, Wear 1
707-44-75180 • Ring, Piston 1
707-51-40030 • Packing, Rod 1
707-51-40640 • Ring, Buffer 1
707-56-40580 • Seal, Dust 1
K04 707-99-24650 Service Kit, Tilt Cylinder
02896-11008 • O-ring 2
04065-07225 • Ring, Snap 2
07000-12085 • O-ring 1
07000-12090 • O-ring 1
07146-02086 • Ring, Back-up 1
07156-00912 • Ring, Wear 1
707-44-90180 • Ring, Piston 1
707-46-03020 • Bushing 1
707-51-45030 • Packing, Rod 1
707-51-45640 • Ring, Buffer 1
707-56-45580 • Seal, Dust 1
K05 707-99-23040 Service Kit, Angle Cylinder
02896-11009 • O-ring 2
07000-12075 • O-ring 1
07000-12080 • O-ring 1
07146-02076 • Ring, Back-up 1
07156-00810 • Ring, Wear 2
707-44-80180 • Ring, Piston 1
707-51-40030 • Packing, Rod 1
707-51-40640 • Ring, Buffer 1
707-56-40580 • Seal, Dust 1


Installation decomposition diagram

Pre-Service Requirements

  1. Workspace Standards:

    • Clean environment (ISO 4406 Class 9/8/6 minimum)

    • Adequate lighting: 700 lux minimum

    • Temperature: 15-30°C (59-86°F)

    • Humidity: <70% RH

  2. Required Tools:

    • Basic hand tool set

    • Torque wrench (calibrated)

    • Micrometer set (0-200mm range)

    • Surface finish comparator

  3. Safety Protocols:

    • Complete system depressurization

    • Equipment properly supported

    • Personal protective equipment

    • MSDS for all chemicals available

Monitoring Recommendations

  • Monthly visual inspections

  • Quarterly performance checks

  • Annual fluid analysis

  • 2,000-hour comprehensive inspection

Troubleshooting Guide

  • Leakage: Check installation, component selection

  • Drift: Verify seals, check for wear

  • Rough Operation: Check fluid, filtration, alignment

  • High Temperature: Check for restrictions, proper sizing



Preventive Maintenance Intervals

Application Recommended Interval Condition Indicators
General Use 2,500 hours or 12 months Visible leaks, reduced performance
Severe Service 1,500 hours or 6 months Increased drift, jerky operation
High-Cycle 2,000 hours or 8 months Temperature increase, noise
Critical Applications Per fluid analysis Particle count increase, fluid degradation

Frequently Asked Questions

A. When will get the items after I place order?
Q. Once your payment is confirmed,we will arrange the goods within 1~4 days; if not in stock, we will inform you before placing the order?

A. If I only know the excavator model, but can not offer parts No.,what should I do ?
Q. If possible, you can send us pictures of old products, nameplate or the size for reference.

A. How can you guarantee the quality??
Q. We will 100% test the goods before delivery. We also support video inspection.

A. How long will it take to delivery to my address??
Q. The normal delivery time is 3-7 days, depending on which country you are in.?

A : Which delivery method will you choose?
Q : By sea, air or express(DHL,Fedex,TNT, UPS, EMS etc.),Sometimes we will arrange as the customer's demand.

A: What's package? Can you give me the package according my requirement??
Q. We usually packed by standard exported box or carton. And yes we can pack as per your requirement.

A: Can the price be cheaper?
Q: Of course, you will be offered a good discount for a big amount.

A: Why should I choose to buy from you?
Q:Our advantages: 100% quality assurance, develop and manufature follow original ones;Quick response within 24 hours; Small order allowed;Reasonable stock and timely delivery;Neutral packing, customized packing are allowed. Positive customer feedback from abroad market;Excellent after-sales service.
A : Which payment terms can you accept?
Q : Paypal. Western Union, Bank Transfer, T/T...
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