Parts list
|
NO. |
Part Number |
Product Name |
Quantity |
|
|
707-01-07580 |
CYLINDER ASS'Y,LIFT (FINAL COATING) |
2 |
|
|
707-13-26013 |
• CYLINDER |
1 |
|
|
707-76-18030 |
• BUSHING |
1 |
|
|
707-27-26012 |
• HEAD,CYLINDER |
1 |
|
|
707-52-11610 |
• BUSHING |
1 |
|
|
707-51-16640 |
• RING,BUFFER (KIT) |
1 |
|
|
707-51-16130 |
• PACKING,ROD (KIT) |
1 |
|
|
566-63-22241 |
• SEAL,DUST (KIT) |
1 |
|
|
07179-14180 |
• RING,SNAP |
1 |
|
|
07000-15250 |
• O-RING (KIT) |
1 |
|
|
707-35-92620 |
• RING,BACK-UP (KIT) |
1 |
|
|
01011-63000 |
• BOLT |
12 |
|
|
01643-33080 |
• WASHER |
12 |
|
|
707-58-16070 |
• ROD,PISTON |
1 |
|
|
707-76-18030 |
• BUSHING |
1 |
|
|
07000-12135 |
• O-RING (KIT) |
1 |
|
|
707-35-52880 |
• RING,BACK-UP (KIT) |
2 |
|
|
707-36-26012 |
• PISTON |
1 |
|
|
707-44-26180 |
• RING,PISTON (KIT) |
1 |
|
|
707-39-26820 |
• RING,WEAR (KIT) |
4 |
|
|
707-40-26011 |
• SPACER |
2 |
|
|
01010-61665 |
• BOLT |
6 |
|
|
|
SERVICE KIT |
|
|
|
707-99-85900 |
SERVICE KIT |
2 |
Product Description
Heavy-Duty 707-99-85900 Hydraulic Lift Cylinder Service Repair Kit for Komatsu WA900-3 Mining Wheel Loader
Restore full hydraulic lifting force and eliminate dangerous boom sagging during heavy quarrying and mining operations with Toparts' premium 707-99-85900 hydraulic cylinder service repair kit. Specifically precision-engineered for the massive main lift cylinders fitted on Komatsu WA900-3 super-large wheel loaders, this overhaul service kit is built to withstand extreme hydraulic pressure surges, sudden bucket shock loads, and continuous exposure to harsh silica dust and acidic mine water.
The Toparts Engineering Difference: Built for 110-Ton Mining Class Stress
Ultra-class wheel loader lift cylinders operate under extraordinary physical conditions. Lifting massive iron ore or granite payloads subjects the main boom seals to continuous high static pressures, severe pressure spikes, and intense heat generated by hydraulic friction. Standard aftermarket seals quickly suffer from lip extrusion, seal roll, or thermal carbonization, leading to internal fluid bypass and catastrophic lift drift. At Toparts, we manufacture our Komatsu-compatible kits with explicit material upgrades:
Mining-Grade P6000 Polyurethane Matrix: Our primary dynamic rod and piston seals are molded from advanced P6000 PU, offering 40% higher tensile strength and superior extrusion resistance under intense hydraulic impact loads compared to standard TPU.
Aggressive Environmental Mud Scraper: Features a rugged double-lip dust wiper system that actively shears off dry mud crusts, quartzite sand, and moisture films from the extending rod, protecting internal sealing lips and cylinder walls from scoring.
Zero-Drift Heavy Pressure Containment: Precision-machined PTFE step seals backed by premium NBR energizers absorb continuous shock waves during heavy bucket breakout, maintaining tight holding force and eliminating boom drift.
High Elastic Memory Static Seals: All static O-rings and backup rings are formulated to resist compression set under continuous high oil temperatures up to 120°C, ensuring leak-free performance across the cylinder gland interface.
Technical Specifications:
Brand Compatibility: Komatsu Construction & Mining
Equipment Application: Super-Large Mining Wheel Loaders
Target Machine Match: Komatsu WA900-3 / WA900-3E0 (110-Ton Class)
Seal Kit Part Number (P/N): 707-99-85900 / 7079985900
Application Component: Main Boom Lift Hydraulic Cylinder
Material Matrix: High-Performance P6000 PU, Reinforced PTFE + Bronze, Premium NBR
Condition: 100% Brand New Industrial-Grade Aftermarket.
Tag:Komatsu WA500-3 Bucket Tilt Cylinder Seal Kits,707-99-64520 Hydraulic Cylinder Seal Kit,Komatsu 878000492 Bucket Cylinder Service seal kit
