# Troubleshooting Routines

## Test 1

1. Attach hoses to pump and tool in the normal manner.

2. Press the advance button and hold it down.

   If the pump pressure builds and the hoses "flex" but the tool still refuses to cycle, the problem is most likely a loose or defective coupling connection. To find out where the bad coupling is, remove the tool from the hoses and marry the loose ends together and cycle the pump. If the gauge pressure reads no more than 500 PSI, then the bad fitting is on the tool. A significantly greater pressure indicates that the problem is in either the pump or a hose fitting.

## Test 2

1. Remove screws from pump motor to reservoir, slide pump motor to the back while keeping pistons into oil.

2. Turn pump on. If you have no oil coming out from the solenoid tube, change the solenoid.

3. Tight the regulating valve to maximum, Push on the advance button and while holding down, look if any oil is coming out from the regulating tube. If oil is coming out, change the regulating valve.

## Test 3

1. Remove tool from hoses.

2. Cycle pump.

   If pump fails to build pressure, the problem is with the pump. If it does build pressure, the problem is with hydraulic blow-by in the tool.

## Test 4

This test should be run prior to every use of an Atlas Copco Tool

1. Connect the tool, pump and hoses together as normal.

2. Cycle the pump several times.

3. Cycle the system once more and observe the sequence of operation.

4. As you depress the advance button, the tool drive shroud turn about 24 degrees and you should hear an audible "click". You will also notice that the disengagement levers will move to the rear of the tool and spring forward.

5. At this point, release the advance button. You should see no further movement and after a moment you will hear another audible "click". This is how the tools are designed to operate.

6. If you observe any other sequence of operation, the system is out of order and cannot deliver more than 10% of its designed capacity.

7. Take immediate corrective action. For reference, tools and pumps are designed from the factory plumbed as follows. This ensures that the tool, pump and ONE hose cannot possible be connected up incorrectly.

## Test 5

공구 | 호스 | 펌프
--- | --- | ---
Advanced Side-Male | Advance side- Female to Female | Advance side-Male
Retract side-Female | Retract Side-Male to Male | Retract Side-Female

Note that connecting two (or any even numbers) of hoses together creates "one" hose which is plumbed backwards! Male to Female and Female to Male. This will cause the system to operate backwards per Test #5 above. If you hose isn’t long enough, connect 3 hoses together, move your pump or call Atlas Copco for a longer hose assembly.