12 ► TT46 User Manual
If symptoms of poor performance develop, the following chart can be used as a guide to correct the problem. When
diagnosing faults in operation of the wrench, always check that the hydraulic power source is supplying the correct
hydraulic ow and pressure to the tool as listed in the following table. Use a ow meter known to be accurate. Check the
ow with the hydraulic uid temperature at least 80
o
F/27
o
C.
SYMPTOM CAUSE SOLUTION
Tie tamper does not run. Power unit not functioning. Check power source for proper ow
and pressure, 4-6 GPM/14-23 LPM,
1500-2000 psi/106-140 bar. TT46233
Model, 7-10 GPM/26-38 LPM.
Couplers or hoses blocked. Remove restriction.
Pressure and return line hoses
reversed at ports.
Be sure hoses are connected to their
proper ports.
Mechanical failure of piston or
automatic valve.
Disassemble tamper and inspect for
damaged parts.
Tie tamper does not run effectively. Power unit not functioning. Check power source for proper ow
and pressure, 4-6 GPM/14-23 LPM,
1500-2000 psi/106-140 bar. TT46233
Model, 7-10 GPM/26-38 LPM.
Couplers or hoses blocked. Remove restriction.
Low accumulator charge (pressure
hoses will pulse more than normal).
Recharge accumulator. Replace
diaphragm if charge loss continues.
Oil too hot (above 140°F/60°C). Provide cooler to maintain proper oil
temperature (140°F/60°C).
Tie tamper operates slow. Low GPM supply from power unit. Check power source for proper ow
and pressure, 4-6 GPM/14-23 LPM,
1500-2000 psi/106-140 bar. TT46233
Model, 7-10 GPM/26-38 LPM.
High back-pressure. Check hydraulic system for excessive
back-pressure (over 200 psi/14 bar).
TROUBLESHOOTING
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