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The hydraulic hammer does not start...

Cause

Solution

Executor

Inverted delivery and return hoses

 

Connect the hoses properly

Operator

Pressure and return line ball valves are closed

 

Open the valves

Operator

Faulty quick coupling

Remove and replace them with standard nipples

Operator
Workshop

Solenoid valve of the hammer system is not working

Repair the solenoid valve

Workshop

Faulty or interrupted electric connection

Check and repair electric connection

Workshop

Too low oil level in the tank  

Fill to appropriate level

Operator

Poor beating with high number of blows...

Cause

Solution

Executor

Not enough nitrogen pressure in the head

Set the appropriate pressure (refer to the maintenance chapter)

Operator
Workshop

Faulty nitrogen accumulator or broken diaphragm

Check the accumulator and restore it

Workshop

Poor beating with low number of blows...

Cause

Solution

Executor

Not enough hydraulic oil flow

Restore the appropriate oil flow and check the operating pressure

Workshop

High oil temperature in the tank

Check the oil level and tank temperature; whenever required, fill it up and/or improve the cooling

Operator
Workshop

Wrong oil pressure

Check the adjustment of the relief valve of excavator

Workshop

Wrong oil pressure

Check and set the appropriate delivery pressure

Workshop

Oil leakage from HP - LP connections...

Cause

Solution

Executor

Connections not tightened

Tighten connections

Operator

Damaged Seals

Replaces seals

Workshop

Oil leakage from the tool...

Cause

Solution

Executor

Worn cylinder gaskets

Disassemble the hammer and replace seals

Workshop

Poor quality oil

Use higher quality oil

Operator

Too high oil temperature

Reduce oil temperature

Workshop

Grooves on the piston

Disassemble and clean piston

Workshop