FAQ
Has the piston's front end (at the cylinder body) broken?
(1.) Issues with the double-head screw (4#), the screw (30#), and the round nut (2#) (2.) During maintenance and repair of the rock drill, the aforementioned screws and nuts were not tightened evenly or synchronously (3.) Particles have entered the rock drill (4.) Wear observed in the copper sleeve located at the front of the piston (79#) (5.) Wear in the inner copper sleeve No. 14 (14#), causing the rear retaining sleeve of the drill bit shank (21#) to collide with the end of the impact piston (6.) Damage to the mating surfaces between the cylinder block (81#) and the machine body (71#) (7.) Misalignment of the gearbox (17#) and the tilted machine head (96#)
Piston rear end (at the handle area) broken?
(1) Loosening or breakage of the (95) bolt on the handle body (2) When maintaining or repairing the rock drill, the (95) bolt was not tightened evenly and simultaneously (3) Wear of the rear copper sleeve of the (91) piston (4) Damage to the mating surfaces between the (70) handle body and the (81) cylinder block
Short drill bit life and tool lifespan?
(1) Improper hole-opening operation; during drilling, the drill rod bends excessively. (2) Misalignment between the rock drill, tamping tool, and positioning device. (3) The rubber components in the tamping tool and positioning device suffer excessive internal bore wear due to prolonged use. (4) Wear of the (97) head guide sleeve on the rock drill. (5) Abnormal cushioning in the rock drill. (6) Dry running of the rock drill.
Is the rear retaining sleeve of the钎尾 cracked?
(1) Using beyond the recommended maintenance and replacement cycle (refer to the service manual) (2) Frequent dry firing of the rock drill (3) Improperly set propulsion pressure (4) Abnormal cushioning in the rock drill (5) Cracked striking surface at the drill bit shank end (6) Cracked striking surface on the impact piston (7) Unstable propulsion pressure
Is the front retaining sleeve at the drill bit cracked?
(1) Using beyond the maintenance replacement cycle (refer to the service manual) (2) Frequent dry firing of the rock drill
Rock drill without impact?
(1) The rock drill is running idly. (2) The rock drill's impact oil supply is abnormal. (3) A foreign object has entered the rock drill, causing the (82) directional control valve spool to become stuck. (4) The rock drill's impact piston has broken.
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