HU2002T-M0 010214
Single Acting Aluminum
Cylinders
Instruction Manual
MODELS: HU2002T, HU2004T, HU2006T - 20 Ton Capacity
HU3002T, HU3004T, HU3006T - 30 Ton Capacity
HU5002T, HU5004T, HU5006T, HU5010T - 50 Ton Capacity
SFA Companies 10939 N. Pomona Ave. Kansas City, MO 64153
Tel: 888-332-6419 * Fax: 816-891-6599
E-mail: sales@bvahydraulics.com Website: www.bvahydraulics.com
Maximum Operating Pressure 10,000 PSI
This is the safety alert symbol. It is used to alert you to potential personal injury hazards.
Obey all safety messages that follow this symbol to avoid possible injury or death.
!
Printed in Taiwan
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 Aluminum Cylinder is designed for
rated capacity pushing, spreading and pressing jobs.
-(HC1201, HC1202 & HC1203 do not have saddle)
-(HC12 series come with ¼ NPTF coupler)
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
!
device.
WARNING: Always check connections before using.
!
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/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.Havegaugeorloadcellaccuracyveriedbyqualied
personnel on a yearly basis.
Saddle
Collar
Protective Cap
Ram
Dust Cap
Female Coupler
Rubber Plug
2
Cylinder
Figure 1 - Typical Cylinder Components
! WARNING
Failure to comply with the following warnings may
result in personal injury as well as property
damage.
• Study, understand, and follow all instructions
provided with and on this device before use.
• Theusermustbeaqualiedoperatorfamiliarwith
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. Stay clear of a lifted
load before it is properly supported. Never rely on
hydraulic pressure to support a load.
Crush Hazard. Keep hands and feet away
from cylinder and workpiece during
operation.
• 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.
• 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 the
pressure rating of the lowest rated component
the system. Install a pressure gauge or other load
measuring instrument to monitor the operating pressure. Burst
hazard exists if hose, connection or any other component in the
system exceed its rated pressure.
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 uidcan igniteandburn.Keep
equipment away from ames and heat.
heat willsoftenseals, resultingin uidleaks.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
repairstoqualied,authorizedpersonal.ContactBVA
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.
Heavy
hydraulic
Excessive
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.
INSTALLATION
NOTICE: Use an approved, high-grade pipe sealant to seal all
hydraulic connections.
1.
Remove the dust cover and rubber plug from coupler
2. Inspectallthreadsandttingsfor signsofwearordamage,
andreplaceasneeded.Cleanallthreadsandttings.
3. Connect hydraulic hose from hydraulic pump to the cylinder
coupler.Ensurethattherearenouidleaks.
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.
.
•
andhydraulicuid.
!
!
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.
No alteration shall be made to the cylinder.
•
Use only factory authorized fasteners, accessories
WARNING: Before operating the pump, tighten all
hose connections with proper tools. Do not overtighten.
Connections should only be tightened securely and leak-free.
Overtightening can cause premature thread failure or high
pressure ttings to burst.
WARNING: Before repairs are made, depressurize cylinder.
3
SPECIFICATIONS
Internal
Pressure
at
Capacity
(psi)
10000
Oil
Capacity
(in3)
Collapsed
Height
(in)
Extended
Height
(in)
9.51 6.85 8.82 7.4
Model Number
HU2002T
Cylinder
Capacity
(tons)
20
Stroke
(in)
1.97
Cylinder
Effective
Area
(in2)
4.83
HU2006T 5.91 28.53 10.79 16.69 9.6
HU3002T
30
2.00
13.00 6.50 8.50 11.0
6.50 9231
HU3006T 6.00 39.00 10.50 16.50 17.0
HU5002T
2.00
22.00 6.50 8.50 17.0
HU5004T 4.00 44.00 8.50 12.50 21.0
50
11.00 9091
HU5006T 6.00 66.00 10.50 16.50 25.0
HU5010T 10.00 110.00 14.50 24.50 34.0
OPERATION
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: NEVER rely on hydraulic pressure alone to
!
secure a load! NEVER allow personnel to work or pass
under a load until the load is secured by cribbing, blocking,
or other mechanical means.
WARNING: To help prevent material fatigue if the 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 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.
WARNING: All personnel must be clear before lowering load.
!
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.
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.
Weight
(lbs)
Cylinder
Housing
Dia.
(in)
3.35HU2004T 3.94 19.02 8.82 12.76 8.5
4.50HU3004T 4.00 26.00 8.50 12.50 14.0
5.50
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
(never exceed 400 hours). Follow pump manufacturers
instructionsforchangingandaddinghydraulicuid.Useonly
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.
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.
4
MAINTENANCE (cont.)
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
TROUBLESHOOTING GUIDE
The following information is intended as an aid in determining if problem exists. Cylinders should be repaired only by authorized BVA
Service Center. For repair service, contact service center in your area.
Symptom Possible Causes Corrective Action
•
Erratic action
Air in system or pump cavitation.
• External leakage in cylinder.
• Cylinder sticking or binding.
• Vent the system (refer to gure 2).
• Contact service center.
• Contact service center.
Overload condition.
•
• Loose couplers.
Cylinder will not extend, or
respond to pressurized uid
Cylinder extend only partially
Cylinder move slower than normal
Cylinder responds to pressurized
uid, but system does not maintain
pressure
Oil leaking from cylinder • Worn or damaged seals. • Contact service center.
Cylinder will not retract or retracts
slower than normal
• Faulty couplers.
• Improper valve position.
• Oil level in pump is low.
• Pump not operating.
• Air-locked pump.
• Oil level in pump is low.
Overload condition.
•
• Cylinder is sticking or binding.
• Loose connection or coupler.
Restricted hydraulic line or tting.
•
• Pump not working correctly.
• Cylinder seals leaking.
• Overload condition.
• Pump or valve malfunctioning.
• Cylinder seals leaking.
• Improper valve position.
• Malfunctioning coupler, damaged
application.
• Pump reservoir overlled.
• Cylinder damage internally.
• Remedy overload condition.
• Tighten couplers.
• Replace both female and male couplers.
• Close release valve or change valve position.
• Fill and bleed the system.
• Check pump’s operating instructions.
• Prime pump per pump operating instructions.
• Fill and bleed the system.
• Remedy overload condition.
• Contact service center.
• Tighten connection or coupler.
• Clean and replace if damaged.
• Check pump’s operating instructions.
• Contact service center.
• Remedy overload condition.
• Check pump’s operating instructions.
• Contact service center.
• Open release valve or change valve position.
• Secure load by other means. Depressurize
pump and hoses, remove application and
replace coupler.
• Secure load by other means. Depressurize
pump and hoses, remove application, then drain
uid to proper level.
• Contact service center.
Cylinder performs poorly
• Oil level in pump is low.
• Air trapped in system.
• Ensure proper oil level.
• Vent the system (refer to gure 2).
5
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