Jackco 840 User Manual

MODEL 840

AIR HYDRAULIC PUMP

INSTRUCTION

Jackco Transnational Inc. © 2012

South El Monte, CA

888-452-2526 www.jackco.com

FOR YOUR SAFETY

Read all instructions, warnings and cautions carefully. Follow all safety precautions to avoid personal injury
or property damage during system operation. Jackco cannot be responsible for damage or injury resulting
from unsafe product use, lack of maintenance or incorrect product and/or system operation. Contact Jackco
when in doubt as to the safety precautions and operations.

Failure to comply with the following cautions and warnings could cause equipment damage and personal
injury.

• Stay clear of loads supported by hydraulics.
A cylinder, when used as a load lifting device,
should never be used as a load holding device.
After the load had been raised or lowered,
it m u s t al w a y s be b locked m e chanicall y.

• Do not exceed equipment rating never attempt
to lift a load weighing more than the capacity
of the cylinder. Overloading causes equipment
failure a n d possible personal i n j u r y. The
cylinders are designed for a maximum pressure
of 10,000 psi. Do not connect a jack or cylinder
to a p ump w i t h a h i g h e r p r e s s u r e rating.

• The system o p e r a t i n g pressure m u s t not
exceed the pressure rating of t h e lowest
ra t e d c o m po ne n t in th e sys t e m . Ins t al l
pressur e gaug es in the system to m onitor
o p e r a t i n g pr e s s u r e . It is yo u r wi n d o w
t o w h a t i s h a p p e n i n g i n th e s y s t e m .

• Onl y use hyd raulic c ylinde rs in a cou pled
s y s t e m . N e v e r u s e a c y l i n d e r w i t h
unconnected couplers. If the cylinder becomes
extremely overloaded, components can fail
catastrophically causing severe personal injury.

• BE S U R E SET U P IS STA B L E BE FO RE
LIFTING LOAD.

Cy l i n d e r s sh o u l d be pl a c e d on a fl a t

sur f ace that can supp ort the load . Where
applicab le, use a cylin der bas e for added
stability. Do not weld or otherwise modify the
cylinder to attach a base or other support.

• Avoid situations where loads are not directly
centered on the cylinder plunger. Off-center
loads produce considerable strain on cylinders
and plungers. In addition, the load may slip
or fall, causing potentially dangerous results.

• To avoid personal injury keep hands and feet away
from cylinder and work piece during operation.

• NEVER set the relief valve to a higher pressure
than the maximum rated pressure of the pump.
Higher settings may result in equipment damage
and/or personal injury. Do no remove relief valve.

• Do not handle pressurized hoses. Escaping oil
under pressure can penetrate the skin, causing
serious injury. If oil is injected under the skin, see a
doctor immediately.

• Avoid damaging hydraulic hose. Avoid sharp bends
and kinks when routing hydraulic hoses. Using a
bent or kinked hose will cause severe backpressure.
Sharp bends and kinks will internally damage the
house leading to premature hose failure.

• Do not drop heavy objects on hose.
A sharp impact may cause internal damage to hose
wire strands. Applying pressure to a damaged hose
may cause it to rupture.

• Do not lift hydraulic equipment by the hoses or
swivel couplers. Use the carrying handle or other
means of safe transport.

• Keep hydraulic equipment away from flames and
heat. Excessive heat will soften packing and seals,
resulting in fluid leaks. Heat also weakens hose
materials and packings. For optimum performance
do not expose equipment to temperatures of 150°F
or higher. Protect hoses and cylinders from weld
spatter.

• Immediately replace worn or damaged parts
genuine JACKCO parts. Standard grade parts
will break causing personal injury and property
damage. JACKCO parts are designed to fit
properly and withstand high loads.

• Hydraulic equipment must only be serviced by a
qualified hydraulic technician. For repair service,
contact JACKCO Inc. To protect your warranty, use
only JACKCO hydraulic oil.

INSTRUCTION

BEFORE USING THE PUMP

• Check all system tting and connections to be sure they are tight and leak free.

• Check oil level in reservoir before operating pump.

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/ll cap to operating position.

TO ADD OIL TO PUMP RESERVOIR

• Turn pump upside down and remove hex ller 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 ller plug and tighten rmly. Do not use brake uid nor transmission oil.