KGR Industries Ltd.  
KGR Industries Ltd.
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KGR drilling And Mining EquipmentKGR drilling And Mining Equipment
ISO 9001 : 2000
 

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

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