
SECTION 10.0
OPERATOR TROUBLESHOOTING CHART
~
WARNING
Before removing the hydraulic lines,
bleed off all hydraulic pressure.
When rectifying faults, observe all
safety regulations.
~
CAUTION
Before disassembling the Street
Hammer, bleed off all nitrogen pres-
sure in the precharge chamber.
10-1
6-1-03
A
LLIED
Street Hammer
AS Series
Problem
Cause
Remedy
Hammer does not start.
Pressure and return lines crossed.
Reverse hoses.
Insufficient impact pressure.
Force tool fully into cylinder hous-
ing by pushing down with the car-
rier.
Check direction of check valve.
Nitrogen precharge is too high.
Check and reset pressure if
needed.
Quick disconnects not opening.
Repair or replace.
Operating pressure is too low.
Check and reset pressure if
needed.
Fault in electrical circuit.
Check for power at solenoid.
Hammer runs slow.
Insufficient flow of oil.
Increase flow if possible.
Return oil pressure too high.
Find and repair restriction to return
flow.
Nitrogen precharge is too high.
Check and reset pressure as
needed.
Operating pressure is too low.
Check and reset pressure as
needed.
O-Ring in top of cylinder housing
damaged.
Replace O-Ring.
Nitrogen precharge pressure is too
low.
Check and reset as needed.
Reduced breaking power.
Operating temperature is too high.
Correct overheating problem. See
Problem: Operating temperature
too high on page 10-2.
Tool binding in bushing.
Repair or replace as
needed—check for proper lubrica-
tion.
Return line pressure is too high.
Locate and correct problem.
Содержание AS 342
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