Cylinder Seal Kit DIPPER 140x100mm (fits JCB) - GMOVE 991/10127
Complete OEM quality dipper (arm) cylinder seal kit by GMOVE. This repair pack is dedicated to heavy JCB JS-series tracked excavators with a 140 mm cylinder bore (piston) diameter and a 100 mm piston rod diameter. The dipper cylinder performs extremely heavy work, transferring massive breakout and lifting forces during material handling. Utilizing the GMOVE repair kit ensures 100% system tightness, restores full arm power, and protects the machine from costly hydraulic oil leaks.
OEM Quality Standard: GMOVE seals for heavy tracked machinery are manufactured from advanced engineering polyurethanes and specialized elastomers. This guarantees exceptional resistance to high working pressures, friction, and extreme dynamic loads. The material does not undergo premature aging or deformation under high operating oil temperatures.
Technical Specification:
- Part type: Dipper / Arm cylinder seal kit.
- Quality class: OEM (Original Equipment Manufacturer Quality).
- Cylinder bore (Piston) diameter: 140 mm.
- Piston rod diameter: 100 mm.
- Manufacturer/Brand: GMOVE.
- Part number: 991/10127 (99110127).
Compatibility with JCB Tracked Excavators:
| Machine Category | Series and Models |
|---|
| Tracked Excavators |
JS Series (Tracked): JS 220, JS 240, JS 260, JS 330 |
Workshop Tip: Operating machines with an operating weight of 22 to 33 tons generates massive hydraulic forces. The most common symptoms of dipper cylinder seal wear are: a visible leak from the gland, slow arm drift (sinking) under the weight of a full bucket, or a characteristic "hissing" sound inside the cylinder at maximum extension.
Installation Instructions:
1. Due to the massive dimensions and weight of the components (a piston rod with a 100 mm diameter weighs several dozen kilograms!), disassembly and assembly should be carried out using appropriate lifting equipment.
2. Before installing the new seals, absolutely check the condition of the chromed piston rod surface for bends, scratches, and pitting. Even minor damage to the chrome will quickly destroy the new gland seal lip.
3. It is recommended to gently warm the stiff Teflon (PTFE) rings in clean, warm hydraulic oil before mounting them on the 140 mm diameter piston – this will make them flexible and prevent them from cracking during stretching. Install all components in absolute cleanliness, generously lubricating them with oil before the final assembly of the cylinder.
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