Enerpac RC User Manual

1.0 IMPORTANT RECEIVING INSTRUCTIONS

Visually inspect all components for shipping damage. Shipping damage is
not covered by warranty. If shipping damage is found, notify carrier at once.
The carrier is responsible for all repair and replacement costs resulting from
damage in shipment.

SAFETY FIRST

2.0 SAFETY ISSUES

Read all instructions, warnings and cautions carefully.
Follow all safety precautions to avoid personal injury or

property damage during system operation. Enerpac cannot
be responsible for damage or injury resulting from unsafe product use, lack
of maintenance or incorrect product and/or system operation. Contact
Enerpac when in doubt as to the safety precautions and operations. If you
have never been trained on high-pressure hydraulic safety, consult your
distribution or service center for a free Enerpac Hydraulic safety course.

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

A CAUTION is used to indicate correct operating or maintenance
procedures and practices to prevent damage to, or destruction of
equipment or other property.

A WARNING indicates a potential danger that requires correct procedures
or practices to avoid personal injury.

A DANGER is only used when your action or lack of action may cause
serious injury or even death.

WARNING: Wear proper personal protective gear when
operating hydraulic equipment.

WARNING: 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 has been raised

or lowered, it must always be blocked mechanically.

WARNING: USE ONLY RIGID PIECES TO HOLD LOADS.

Carefully select steel or wood blocks that are capable of
supporting the load. Never use a hydraulic cylinder as a shim

or spacer in any lifting or pressing application

. DANGER: To avoid personal injury keep hands and feet

away from cylinder and workpiece during operation.

WARNING: Do not exceed equipment ratings. Never attempt
to lift a load weighing more than the capacity of the cylinder.
Overloading causes equipment failure and possible personal

injury. The cylinders are designed for a max. pressure of 700
bar [10,000 psi]. Do not connect a jack or cylinder to a pump with a
higher pressure rating.

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.

WARNING: The system operating pressure must not exceed the
pressure rating of the lowest rated component in the system.
Install pressure gauges in the system to monitor operating

pressure. It is your window to what is happening in the system.

CAUTION: Avoid damaging hydraulic hose. Avoid sharp bends

and kinks when routing hydraulic hoses. Using a bent or

kinked hose will cause severe back-pressure. Sharp bends and
kinks will internally damage the hose 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.

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

CAUTION: Keep hydraulic equipment away from flames
and heat. Excessive heat will soften packings and seals,

resulting in fluid leaks. Heat also weakens hose materials
and packings. For optimum performance do not expose equipment to
temperatures of 65°C [150°F] or higher. Protect hoses and cylinders
from weld spatter.

DANGER: 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.

WARNING: Only use hydraulic cylinders in a coupled system.
Never use a cylinder with unconnected couplers. If the
cylinder becomes extremely overloaded, components can

fail catastrophically causing severe personal injury.

WARNING: BE SURE SETUP IS STABLE BEFORE LIFTING
LOAD. Cylinders should be placed on a flat surface that can

support the load. Where applicable, use a cylinder base 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.

Distribute the load evenly across the entire saddle surface.
Always use a saddle to protect the plunger.

IMPORTANT: Hydraulic equipment must only be serviced by
a qualified hydraulic technician. For repair service, contact
the Authorized ENERPAC Service Center in your area. To
protect your warranty, use only ENERPAC oil.

WARNING: Immediately replace worn or damaged parts by
genuine ENERPAC parts. Standard grade parts will break
causing personal injury and property damage. ENERPAC

parts are designed to fit properly and withstand high loads.

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Instruction Sheet

PLUNGER CLEVIS ATTACHMENTS

L1327 Rev. B 06/13

POWERFUL SOLUTIONS. GLOBAL FORCE.

3.0 OPERATION

1. Base clevis attachments are

for use on ENERPAC RC
single-acting cylinders.
Cylinder capacities are 5
through 30 ton (see Table

1).

2. The clevis mounts to the
cylinder plunger (see Fig. 1)
and provides a method of
attaching cylinders to
custom fixtures or set-ups
where the cylinder is used

for pushing only. CAUTION:

The clevis attachment is

not designed as a pulling device. When used for pushing and

installed properly (see Fig. 2) the clevis will withstand full-rated
cylinder capacity.

4.0 INSTALLATION

1. Thread the clevis attachment into the cylinder plunger until the clevis
is seated against the top of the plunger. The clevis must be fully
threaded into the plunger to provide full capacity and avoid damage
to clevis and plunger threads.

2. Install the clevis and cylinder to fixtures using cold drawn steel pins
through the clevis and fixture. Refer to Table 1 for correct pin sizes
and Fig. 2 for recommended mounting condition. View "A" is correct,
providing a stable condition. Views "B" and "C" do

not provide a

stable mounting condition.

Model Cylinder Clevis Dimensions – (inches) Pin Yield

No. Capacity Size Strength

(Tons) A B C D E F G H I J K

REP-5 5 *3/4-16 1/8 1/2 2 1/4 1 3/8 5/8 5/8 5/8 9/16 9/32 1 1/8 5/8" dia. 50,000 psi

REP-10 10/15 **1-8 1/4 7/8 3 5/16 2 1/8 1 1 7/8 1 1/2 1 11/16 7/8" dia. 60,000 psi

REP-25 25/30 1 1/2-16 1/4 1 3 13/16 2 5/8 1 1/4 1 1/2 1 1/4 1 1/2 3/4 2 1/4 1 1/4" dia. 60,000 psi

*Except RC-50 **Except RC-101

B

A

H

I

J

K

G

C

D

E

F

CORRECT

INCORRECT

INCORRECT

PLUNGER

CLEVIS

PIN

CYLINDER

FIXTURE

View

A

View

B

View

C

Figure 2

Table 1

Figure 1, PLUNGER CLEVIS –
Attaches to cylinder plunger.

All Enerpac products are guaranteed against defects in workmanship and materials for as long as you own them.

For your nearest authorized Enerpac Service Center, visit us at www.enerpac.com

www.enerpac.com