GEAR KIT

770 198 02 GEAR KIT This service kit contains all the necessary wear parts to properly rebuild and seal the air system components within a drifter. Its primary function is to restore the performance of the flushing air circuit, which is responsible for clearing rock cuttings and debris away from the drill bit during operation. A properly sealed system ensures full air pressure is directed down the hole where it's needed most.

Internal leaks in the air circuit directly reduce drilling efficiency. When flushing pressure drops, cuttings are not cleared effectively, which increases friction, slows down the penetration rate, and can cause the drill steel to get stuck. By replacing all the key wear parts at once, you restore the system's performance and help protect the drifter and drill string from premature wear.

Weak or inconsistent flushing air from the bit is a clear sign that the seals in the air circuit are worn. You might also hear hissing sounds from the drifter body. When installing this kit, it's best practice to replace every component provided, even if only one part seems to be the cause of the leak. This approach prevents a follow-up failure and extends the time until the next service is required.