Cylinder Lock Seal Kit - AZERI PARTS 25/980201
The AZERI PARTS cylinder lock repair kit is a set of precision seals dedicated to the regeneration of pilot-operated hydraulic check valves (so-called cylinder locks). This component plays a vital role in the machine safety system, preventing uncontrolled boom descent in the event of a hose burst or pressure drop.
Specification and kit contents:
- Contents: 4 yellow O-rings, 4 O-rings, 1 black O-ring.
- Material: Specialized elastomer compounds resistant to pressure pulsations and aggressive additives in hydraulic oils.
- Application: Sealing of pistons and seats within the cylinder lock valve block.
Compatibility with JCB Machinery:
| Machine Category | Models and Series |
|---|
| Telescopic Handlers |
506, 530, 531, 532, 533, 535, 537, 540, 550 |
| JS Crawler Excavators |
JS 200, JS 210, JS 220, JS 235, JS 240, JS 260 |
Mechanic's Tip: The main symptom of worn seals in a cylinder lock is the slow, self-acting descent of the arm (boom) when the engine is off or while stationary under load. When replacing O-rings, pay special attention to the cleanliness of the channels inside the valve block – even microscopic metal shavings can damage new seals during installation. Yellow O-rings are typically harder and installed in areas exposed to the highest hydraulic shocks.
.png)
