Crossport Systems Pivio Especificaciones descargar pdf (Pagina 45)

Section Contents

5.5

BEST BY FARR

14 1/2" Closed Mouth Trailer-Mounted Bucking Unit

Technical Manual

E. TONG WILL NOT DEVELOP SUFFICIENT TORQUE

1. Malfunctioning relief valve on unit or tong.

a. POSSIBLE PROBLEM: Relief pressure set too low.

SOLUTION: Increase setting. To check, block the oil line beyond the relief valve and

determine pressure with a gauge.

b. POSSIBLE PROBLEM: Valve is stuck.

SOLUTION: Check for contamination of oil that may inhibit the way the valve actuates.

Remove valve and clean, ensuring that the valve spring operates smoothly.

c. POSSIBLE PROBLEM: Valve is leaking.

SOLUTION: Check valve seat for scouring. Check oil seals. Check for particles stuck

under the valve system.

2. POSSIBLE PROBLEM: Worn or damaged pump parts.

SOLUTION: Inspect and clean, replace all worn or broken parts.

3. POSSIBLE PROBLEM: Pump speed too slow.

SOLUTION: Check motor speed.

4. POSSIBLE PROBLEM: Fluid viscosity too high.

SOLUTION: Pump may not prime if fluid is too heavy. Replace with proper viscosity fluid.

5. POSSIBLE PROBLEM: Viscosity of fluid too low.

SOLUTION: System may overheat. Replace with proper viscosity fluid.

6. POSSIBLE PROBLEM: Fluid by-passed to reservoir.

SOLUTION: Check relief valve for proper operation. Check directional valve. Neutral posi-

tion should return fluid directly to the reservoir.

7. POSSIBLE PROBLEM: Worn or damaged tong motor causing slippage.

SOLUTION: Replace or repair worn or damaged parts.

8. POSSIBLE PROBLEM: Damaged bearings or gears causing excessive drag.

SOLUTION: Repair or replace worn parts.

9. POSSIBLE PROBLEM: Poor hydraulic pressure at the tong or excessive back pressure in

the return line.

SOLUTION: Restriction in line between power unit and tong. Inspect integrity of self-

sealing couplings.

10. POSSIBLE PROBLEM: Defective torque gauge or load cell.

SOLUTION: Replace defective components. Ensure dampening screw has been adjusted.

Ensure gauge has been calibrated to proper torque arm length.

Troubleshooting

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Crossport Systems Pivio Especificaciones Pagina 45