Common faults and elimination of the gas leg of the rock drill?

Common faults and troubleshooting methods for rock drills are shown in the table below:
List of common faults and troubleshooting methods for rock drills
Fault conditions
cause
Method of exclusion
Insufficient thrust
Not advancing
Exhaust valve does not work
Pull rod sliding
The exhaust valve is off, the leather pad is damaged, the pull rod sleeve is leaking, the pull rod sleeve is stuck, and the pull rod cannot be extended.
Wind tunnel
Expansion ring wear
Change the leather pad, clean the exhaust valve, remove and wash, correct and repair
Cleaning duct
Change the new expansion ring

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