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SAFETY AND GENERAL INFORMATION
Save these instructions. For your safety, read and understand
the information contained within. The owner and operator shall
have an understanding of this product and safe operating
procedures before attempting to use this product. Instructions
and safety information shall be conveyed in the operator’s
native language before use of this product is authorized. Make
certain that the operator thoroughly understands the inherent
dangers associated with the use and misuse of the product. If
any doubt exists as to the safe and proper use of this product
as outlined in this factory authorized manual, remove from
service immediately.
Inspect before each use. Do not use if leaking, broken, bent,
cracked or otherwise damaged parts are noted. If the cylinder
has been or suspected to have been subjected to a shock load
(a load dropped suddenly, unexpectedly upon it), discontinue
use until checked out by a BVA Hydraulics authorized service
center. Owners and operators of this equipment shall be aware
that the use and subsequent repair of this equipment may
require special training and knowledge. It is recommended that
an annual inspection be done by qualied personnel and that
any missing or damaged parts, decals, warning/safety labels or
signs be replaced with BVA Hydraulics authorized replacement
parts only. Any cylinder that appears to be damaged in any way,
is worn or operates abnormally shall be removed from service
immediately until such time as repairs can be made.
PRODUCT DESCRIPTION
BVA Hydraulics Single Acting Cylinder is designed for rated
capacity pushing, spreading and pressing jobs. A wide variety
of applications exist for this category of product. Special skill,
knowledge and training may be required for a specic task
and the product may not be suitable for all the jobs described
above. Unsuitable applications would include applications that
call for a device to move, level or support persons, animals,
hazardous materials, mobile homes/dwellings in general,
mirrors and/or plate glass, and/or to connect/secure hatches,
components, etc. between bulkheads. The user ultimately
must make the decision regarding suitability of the product
for any given task and therefore accept responsibility for that
decision. Immediately after lifting, loads must be supported
by appropriate mechanical means.
WARNING: NEVER use hydraulic cylinder as a support
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device.
WARNING: Always check connections before using.
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Alteration of these products is strictly prohibited. Use
only those adapters and attachments provided and
approved by the manufacturer.
WARNING: To reduce the risk of personal injury and/
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or property damage, ensure that the rated working
pressure of each pressurized attachment be equal to or
greater than the rated working pressure developed by
the hydraulic pump.
BEFORE USE
1. Before using this product, read the owner's manual
completely and familiarize yourself thoroughly with the
product, its components and recognize the hazards
associated with its use.
2. Verify that the product and the application are compatible.
If in doubt, call BVA Hydraulics Technical Service (888)
332-6419.
3. Inspect before each use. Do not use if bent, broken, leaking
or damaged components are noted.
4.
Replace worn or damaged parts and assemblies with BVA
Hydraulics authorized replacement parts only. Lubricate as
instructed in Maintenance Section.
5. Ensure method of conrming load is accurate and working
properly. Have gauge or load cell accuracy veried by
qualied personnel on a yearly basis.
NOTICE: Use an approved, high-grade pipe sealant to seal
all hydraulic connections.
1.
Remove the dust cover and rubber plug from coupler
2. Inspect all threads and ttings for signs of wear or damage,
and replace as needed. Clean all threads and ttings.
3. Connect hydraulic hose from hydraulic pump to the cylinder
coupler. Ensure that there are no uid leaks.
4. Install in-line pressure gauge.
5. Check for leaks in system and have repaired by qualied
personnel.
NOTICE: The use of cylinder attachments or extensions
reduces the cylinder capacity by at least 50% per attachment/
extension.
.
! WARNING
WARNING: Before operating the pump, tighten all
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hose connections with proper tools. Do not overtighten.
Connections should only be tightened securely and leakfree. Overtightening can cause premature thread failure
or high pressure ttings to burst.
WARNING: Before repairs are made, depressurize
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cylinder.
Tips for hydraulic hoses & uid transmission lines:
• Avoid short runs of straight line tubing. Straight line runs
do not provide for expansion and contraction due to
pressure and/or temperature changes.
• Reduce stress in tube lines. Long tubing runs should be
supported by brackets or clips.
may
property damage.
• Study, understand, and follow all instructions
provided with and on this device before use.
with the correct operation, maintenance, and use of
cylinders.
Wear protective gear when
operating hydraulic equipment.
This device is NOT suitable for use as support device! As the load is lifted, use blocking and
cribbing to guard against a falling load.
clear of a lifted load before it is properly
Never rely on hydraulic pressure to support a load.
during operation.
•
Do not connect a cylinder to a pump with higher
pressure rating.
• Do not subject cylinder to a shock loads, a load
dropped suddenly, causing the system pressure to
exceed rated pressure.
The system operating pressure must not exceed
measuring instrument to monitor the operating pressure. Burst
hazard exists if hose, connection or any other component in
the system exceed its rated pressure.
Avoid damaging hydraulic hose. Do not allow
hose to kink, twist, curl, crush, cut or bend so
tightly that uid ow within the hose is blocked or
reduced. Periodically inspect the hose for wear.
Failure to comply with the following warnings
result in personal injury as well as
• The user must be a qualied operator familiar
Stay
supported.
Crush Hazard. Keep hands and feet
away from cylinder and workpiece
•
Do not exceed rated capacity of the cylinder or
any equipment in the system. The cylinder is
designed for a max. pressure of 10,000 psi.
the pressure rating of the lowest rated component
the system. Install a pressure gauge or other load
Do not pull, position or move cylinder setup by
the hose. Use carrying handle or other means
of safe transport.
Do not handle pressurized hoses. Never attempt
to grasp a leaking pressurized hose. Ensure to
release the system pressure before disconnecting
hydraulic hose or connections.
Hydraulic uid can ignite and burn. Keep
heat.
uid leaks. Heat also weakens hose materials.
Cylinder must be on a stable base which is able
to support the load while pushing or lifting. Use
shims, friction material or constrains to prevent
slippage of the base or load. Ensure cylinder is fully engaged
into/onto adapters, extension accessories.
Center load on cylinder. Distribute load evenly
across the entire saddle surface. Do not
off-center loads on a cylinder. The load can tip
or the cylinder can “kick out”.
Never try to disassemble a hydraulic cylinder,
refer repairs to qualied, authorized personal.
Contact BVA Hydraulics tech service for authorized
service center.
Do not subject hose to sharp objects or
heavy impact.
Hose material or seals must not come in
contact with corrosive materials such as
battery acid, creosote-impregnated objects
and wet paint. Never paint a coupler or hose.
Operate the hydraulic pump to advance and retract the cylinder.
Do not continue pumping when cylinder is fully extended.
Internal pressure will build up and may damage the seal of
the cylinder.
WARNING: To help prevent material fatigue if the
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cylinder is to be used in a continuous application, the
load should not exceed 85% of the rated capacity.
WARNING: Your cylinder, hose(s), couplings and pump
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all must be rated for the same maximum operating
pressure, correctly connected and compatible with the
hydraulic uid used. An improperly matched system can
cause the system to fail.
Lubrication & Cleaning
Keep cylinder clean at all times.
1. Any exposed threads (male or female) must be cleaned and
lubricated regularly, and protected from damage. Lubricate
with light machine oil.
2. If a cylinder or ram has been exposed to rain, snow,
sand, airborne abrasive, or any corrosive environment, it
must be cleaned, lubricated, and protected immediately
after exposure. Daily clean exposed ram with clean cloth
dampened with light machine oil. Protect exposed ram from
the elements at all times.
3. Keep the hydraulic system as free of dirt as possible. When
not in use, couplers must be sealed with dust covers. All
hose connections must be free of dirt and grime. Any
equipment attached to the cylinder must be kept clean.
WARNING: All personnel must be clear before lowering
!
load.
MAINTENANCE
1. Inspect hoses and connections daily. Replace damaged
components immediately with BVA Hydraulics Replacement
Parts only.
2. Tighten connections as needed. Use pipe thread sealing
compound when servicing connections.
3. Always use clean, approved hydraulic uid and change as
recommended or sooner if the uid becomes contaminated
instructions for changing and adding hydraulic uid. Use
only good quality hydraulic uid. We recommend Mobil
DTE13M or equivalent when using with hand pump or air
pump; BVA Hydraulics Oil (F01) or equivalent when using
with electric pump. Never use brake uid, transmission uid,
turbine oil, motor oil, alcohol, glycerin etc. Use of other than
good quality hydraulic oil will void warranty and damage the
cylinder, pump, hose etc.
4.
Use an approved, high-grade pipe thread sealant to seal all
hydraulic connections. Teon tape can be used if only one layer
of tape is used and it is applied carefully (two threads back) to
prevent the tape from being introduced into hydraulic system.
A piece of tape could travel through the system and obstruct
the ow of uid and adversely affect function.
Storage
Cylinders should be stored vertically with ram plunger fully
retracted in a dry, protected area, not exposed to corrosive
vapor, dust or other harmful elements. When a cylinder has
not been used for a period of 4 months, it should be connected
to a pump and fully extended and then retracted a minimum
of 5 times. This cycle will lubricate the cylinder wall, reducing
the possibility of corrosion and damage thereof.
How to remove faulty coupler:
If cylinder does not retract,
1. Secure load by other means.
2. Depressurize pump and hose.
3. Remove the cylinder from application.
4. Disconnect and replace with new coupler.
NOTICE:Do not attempt to grasp with pliers or wrench
without rst wrapping the jaws of such tool with rags or similar
padding.
How to bleed air from system:
1. Place pump at a higher elevation than the hose and cylinder
as shown in Figure 2.
2. Operate pump to fully extend and retract the cylinder 2 or 3
times. The objective is to force the air bubbles up hill and
back to the pump reservoir.
3. Follow pump instruction manual to bleed the air from pump
reservoir. On most pumps, air can escape by opening the
oil ller plug/screw.
Figure 2 - Illustration to bleed air from system
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