Preventive Maintenance; Lubrication; Troubleshooting Guide - SPX OTC 525265 Lista De Partes E Instrucciones De Funcionamiento

Parts List & Operating Instructions
Bleeding Air from the System
During the first moments of operation or after prolonged use, air may accumulate within the hydraulic system,
causing the cylinder to respond slowly or in an unstable manner. To remove the air,
1. Position the cylinder at a lower level than the pump. (This allows air to be released through the pump reservoir.)
2. Run the system through several cycles of extending and retracting the cylinder, free of any load.

Lubrication

If the pump is operated on a continuous duty cycle for extended periods, install an automatic air line oiler in the
air inlet line, as close to the pumping unit as possible. Set the unit to feed approximately one drop of oil (SAE
No. 10) per minute into the system.
Checking / Adding the Hydraulic Fluid
Check the hydraulic fluid level after every 10 hours of use.
1. Retract the cylinder, and disconnect the air supply.
2. Clean the area around the filler/vent plug, and remove the plug. The fluid level should be 1/2 inch (12.7 mm)
from the filler / vent cap when the cylinder is retracted.
3. If necessary, add OTC-approved hydraulic fluid—215 SSU@ 100°F (38°C): Insert a clean funnel with a filter;
add fluid to a level 1/2 inch (12.7 mm) from the filler/vent plug.
4. Replace the filler/vent plug.
The greatest single cause of failure in hydraulic pumps is dirt. Keep the pump and attached equipment clean to prevent foreign
matter from entering the system. Seal unused couplers with thread protectors. Keep hose connections free of dirt and oil.
Problem
Pump reciprocates, but no fluid
delivery. (Cylinder does not extend.)
Low fluid delivery. (The cylinder
extends slowly.)
Pump will not build to maximum
pressure, and there's no visible
leakage.
Pump builds pressure, but will not
hold pressure.
Pump runs slowly even after desired
pressure has been reached.
Excess oil spray from muffler.

Preventive Maintenance

Troubleshooting Guide

Cause
1. Low fluid level.
2. Pump is not primed.
1. Air supply not adequate.
2. Contamination on air side of pump.
3. Air in hydraulic system.
1. Air supply not adequate to obtain
maximum pressure.
2. Pressure regulator not set correctly, if
so equipped.
1. Leak in hydraulic system.
1. Output pressure equal to, or higher
than, relief valve setting.
1. Air lubricator set too rich, if equipped.
Form No. 525639, Sheet 3 of 3, Back
1. Add hydraulic fluid to within
1/2 inch of filler / vent hole.
2. Press RELEASE end of pedal while
holding down air intake valve. Allow
pump to cycle for approx. 15 seconds.
1. Verify air input supply is 20 CFM (.57
M3/min.) minimum.
2. Clean inlet screen on air side of pump.
3. Position cylinder at a lower level than
pump. Run system through several cycles
of extending and retracting the cylinder.
1. Verify air input supply is 20 CFM (.57
M3/min.) minimum.
2. Verify air is regulated at 100 psi (7
BAR) at the pump.
1. Check all hydraulic connections for
leakage, and refit or repair as needed.
1. Normal operation.
1. Set air lubricator to 1 drop per minute.
Solution