Jackco Model 840 w/ Hydraulic Hose - Manual (Page 3)

INSTRUCTION
TO OPERATE THE PUMP
• Remove the shipping plug from the air inlet hole and insert a ¼” NPT quick air coupler of
your choice.
• Connect air supply line to the air coupler.
• To activate the pump for ram extension, depress the treadle at air inlet valve end.
• To retract ram plunger, depress treadle end marked “RELEASE”. Retraction of ram will
stop and load will be held when pressure on treadle is removed.
AIR REMOVAL
Removing air from the hydraulic system will help the cylinder to advance and retract smoothly.
Pump with Single-Acting Cylinder
• Position pump at higher elevation than cylinder.
• Position cylinder with plunger end down (up if using pull cylinder)
• Operate pump to fully extend the cylinder (retract if using pull cylinder)
• Depress release valve to retract cylinder (extend if a pull cylinder). This will force the
trapped air to move up to the pump reservoir.
• Repeat the above steps as necessary.
• Add oil if necessary.
• Return vent/fill cap to operating position.
TO ADD OIL TO PUMP RESERVOIR
• Turn pump upside down and remove hex filler plug. Tip pump so the hose end is lowest
to prevent air from entering the hydraulic system. Fill to the top with HYDRAULIC oil.
Replace filler plug and tighten firmly. Do not use brake fluid nor transmission oil.
BEFORE USING THE PUMP
• Check all system fitting and connections to be sure they are tight and leak free.
• Check oil level in reservoir before operating pump.