Simplex G5 - Troubleshooting

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Never crawl or place any part of your body under any load at any time. Insert blocking or cribbing under the load as
you lift. Hydraulic rams are meant for lifting only and should not be used to support the load for any period of time.
You should obtain and be familiar with the American National Standards Institute rules that apply to hydraulic rams
and jacks (ASME ANSI B30.1).
5.5 AFTER COMPLETING THE JOB
Before disconnecting hoses, ttings, etc., rst be sure the ram is unloaded and retracted, then unplug the power
cord and shift the hydraulic controls several times to release system pressure. Store the pump in a clean, dry area.
6.0 PERIODIC MAINTENANCE
Completely change the hydraulic oil and clean the intake screen and magnet (located in the reservoir) twice a year. If
equipped, change the external oil lter twice a year (Use Simplex oil only, Model # AO1, 1 gallon). Change the oil
more frequently when used in extremely dusty areas or when the oil has been overheated. Using oil other than
Simplex Brand may void the pump’s warranty.
The following conditions require more frequent oil changes.
• Rigorous duty, where oil temperature may reach 150°F.
• High humidity environment and extreme changes in temperature that can result in condensation inside the
reservoir.
• Dirty or dusty environments that may contaminate the oil.
• Frequent connection and disconnection of hydraulic hoses and components.
WARNING: The electrical power cord must be disconnected from the electrical outlets before performing
maintenance or repair procedures.
6.1 MAINTAIN OIL LEVEL
Check hydraulic oil level every 30 hours of operation (sight gauge should be completely covered in oil when all tools
are retracted. Add Simplex oil (Model # AO1 – 1 gallon) when necessary. Oil level should be no more than 1” from
top of reservoir plate – with cylinders retracted and motor off.
6.2 CLEAN OIL INTAKE SCREEN ONCE A YEAR
Loosen and remove reservoir plate bolts. Lift pump unit off the reservoir, being careful not to damage the gasket.
Applies to 1.5, 2.5 gallon reservoirs:
Remove the 5 Allen socket head cap screws securing the screen to the 1st stage gear pump. Care should be taken
not to remove the center plate and gears. Remove and clean with nonammable solvent, blow dry clean. Reinstall in
reverse order and torque bolts to 75 inch pounds. Keep the motor and pump as clean as possible.
Applies to the 5 and 10 gallon reservoirs:
Unscrew screen from bottom of pump unit and clean with nonammable solvent. Blow dry and reassemble. Keep
areas around pump unobstructed to provide good air ow around the motor and pump. Keep the motor and pump
as clean as possible.
6.3 FLUSH THE PUMP
If you suspect your pump has been contaminated or discover sludge or other de-
posits on internal components, you should thoroughly ush the pump. Remove the
old oil from the reservoir, then thoroughly clean the reservoir and rell with a clean,
nonammable ushing oil. Reassemble the pump and motor to the reservoir. Now
run the pump in no load condition for 1 or 2 minutes maximum. Unplug the pump
and remove the motor and pump assembly again. Now drain the ushing oil and re-
clean the inside of the reservoir. (Make sure ushing uid is also drained from pump
assembly). Rell the reservoir with Simplex hydraulic oil and reassemble the pump.
Oil Fill (1.5 - 10 Gal. Models)
Sight Gauge
Drain Plug (1.5 - 10 Gal.)