BLOCK A

BLOCK A 3222 3490 81 Functioning as a central junction point, this block distributes hydraulic fluid to different circuits within the rock drill's control system. It simplifies the hydraulic plumbing by consolidating multiple lines into a single, solid component. This design reduces the number of potential leak points compared to a complex network of individual hoses and fittings, contributing to overall system reliability.

A failure in this block, such as an internal crack or a blocked passage, can have a significant impact on performance. For example, a restriction could starve the rotation motor of oil, causing it to stall when drilling through harder rock formations. A sudden external crack can also create a serious safety hazard from a high-pressure oil spray, making its integrity crucial for both consistent output and a safe work area.

Look for persistent, hard-to-trace hydraulic leaks around the drifter or feed as a sign of a potential crack. If a specific function becomes weak or unresponsive, the block's internal passages could be contaminated. When replacing the block, always use new seals on all fittings and ensure port surfaces are perfectly clean before installation to prevent leaks.