Trouble Shooting

Drilling rock is a very difficult process and during drilling some problems with hammers might be faced. In order to avoid such problem the following precautions are taken

Compressor Output is Checked for Temperature & altitude are adjusted Air pressure is checked with pressure gauge Air filters are checked Minimum Level of rock oil is maintained Drill Rods are Checked for Air leakage’s throughout Pressure loss in hose Weight on bit is checked for Feed cylinder dropping Proper rotation & feed Control tube is checked for Correct diameter and height Chips at internal diameter Burrs on outer diameter Check valve is checked for Proper seating Level of rig is checked for Level jacks leakage Hydraulic pressure dropping at valve end Problem Cause Solution Thread Locking Insufficient Lubrication   Use proper amount &type of thread lubricants   Damaged thread Thread breakage Improper or damaged mating parts   Check the mating parts with api thread gauge Threads rust   Maintain Proper Rust Preventive Oil Operated with damaged threads   Check the mating parts Outer Diameter Body Wear Out Abrasive formation   Increase hole cleaning   Avoid the wear out bits Body cut Damaged threads   Remove the threads burrs Hammer Case Problem Cause Solution Thread locking Insufficient lubrication   Use proper amount & type of thread lubricants. Thread breakage/Crack Improper or damaged mating parts Denting at hammer case   Check the mating parts with API thread gauge   Open proper breakout tools   Do not open with heat & hit Threads rust   Maintain proper rust prevent oil Operated with damaged threads   Check the mating parts Od Body Wear Out Abrasive formation   Increase hole cleaning   Avoid the wear out bits Body Cut Damaged threads   Remove the threads burs   To check control tube seating face perpendicular to honing bore in hammer case Crack at Front Chuck End Case worn below acceptable limit   Use new bit   Replace hammer case Id Wear Out Insufficient lubrication   Use proper amount & type of lubricants   To check compressor filter   To clean hammer case before assy   To check control tube id   To check coupler id   To check drill rods id   Cap drill rods after use Foreign material contamination Check Valve Problem Cause Solution Not sealing Worn or cut seal surface (Spring tension may less)   Replace check valve   Replace spring Melting Heavy temperature   Check compressor out put temperature   Use proper amount & type of lubricants Control Tube Problem Cause Solution Od Rubbing Insufficient lubrication   Use proper amount & type of lubricants   To check compressor filter   To clean hammer case before assy   To check control tube id   To check coupler id   To check drill rods id   Cap drill rods after use   Replace worn partsPin taper (digger)   Control tube seating in hammer case (tiger) Foreign material contamination Work piston od hammer case ID Misalignment Cracked or Broken Heavy friction   Foreign material keep out   Use proper amount & Type of lubricants   Maintain proper alignment   Use proper amount & type of lubricants Rust Piston Problem Cause Solution OD Rubbing Insufficient lubrication   Use proper amount & type of lubricants.   To check compressor filter   To clean hammer case before assy.   To check control tube idTo check coupler id   To check drill rods id   Cap drill rods after use   Replace worn parts   Pin taper (digger)   Control tube seating in hammer case (tiger) Foreign material contamination Worn piston OD hammer case ID Misalignment Cracked or Broken Heavy friction   Foreign material keep out   Use proper amount &type of lubricants   Maintain proper alignment   Use proper amount of lubricant Rust