Enerpac DuroTech Series Service Information

POWERFUL SOLUTIONS. GLOBAL FORCE.
L4241 Rev. A

Table of Contents:

Section
1.0 IMPORTANT RECEIVING INSTRUCTIONS . . . . . . . . 1
2.0 SAFETY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
3.0 REPAIR PROCEDURES . . . . . . . . . . . . . . . . . . . . . . . 3
3.1 Pump Disassembly . . . . . . . . . . . . . . . . . . . . . . . . 3
3.2 Pump Element Disassembly . . . . . . . . . . . . . . . . . 3
3.3 Piston Seal Removal . . . . . . . . . . . . . . . . . . . . . . 4
3.4 Piston Seal Replacement . . . . . . . . . . . . . . . . . . . 4
3.5 End Cap Seal Removal and Replacement . . . . . . 4
3.6 Rod Seal Removal . . . . . . . . . . . . . . . . . . . . . . . . 4
3.7 Rod Seal Replacement . . . . . . . . . . . . . . . . . . . . . 5
3.8 Pump Element Reassembly . . . . . . . . . . . . . . . . . 5
3.9 Pump Installation . . . . . . . . . . . . . . . . . . . . . . . . . 5
4.0 REPAIR PARTS INFORMATION . . . . . . . . . . . . . . . . . 6

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.

2.0 SAFETY

2.1 Introduction
Read all instructions carefully. Follow all recommended safety
precautions to avoid personal injury as well as damage to the
product and/or damage to other property. Enerpac cannot be
responsible for any damage or injury from unsafe use, lack of
maintenance or incorrect operation. Do not remove warning
labels, tags, or decals. In the event any questions or concerns
arise, contact Enerpac or a local Enerpac distributor for
clarification.
If you have never been trained on high-pressure hydraulic
safety, consult your distributor or service center for information
about an Enerpac Hydraulic Safety Course.
This manual follows a system of safety alert symbols, signal
words and safety messages to warn the user of specific
hazards. Failure to comply with these warnings could result
in death or serious personal injury, as well as damage to the
equipment or other property.
The Safety Alert Symbol appears throughout this
manual. It is used to alert you to potential physical
injury hazards. Pay close attention to Safety Alert
Symbols and obey all safety messages that follow this symbol
to avoid the possibility of death or serious personal injury.
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Page
Service Information Sheet
Pump Element Seal Replacement
DuroTech™ Series
Air-Driven Hydraulic Pumps
Safety Alert Symbols are used in conjunction with certain
Signal Words that call attention to safety messages or property
damage messages and designate a degree or level of hazard
seriousness. The Signal Words used in this manual are
WARNING, CAUTION and NOTICE.
Indicates a hazardous situation that, if not
WARNING
avoided, could result in death or serious
personal injury.
Indicates a hazardous situation that, if not
CAUTION
avoided, could result in minor or moderate
personal injury.
Indicates information considered important,
NOTICE
but not hazard related (e.g. messages
relating to property damage). Please note
that the Safety Alert Symbol will not be used
with this signal word.
2.2 Hydraulic Pump Safety Precautions
(DuroTech Series)
Failure to observe and comply with the following
precautions could result in death or serious personal
injury. Property damage could also occur.
• Read and completely understand the safety precautions
and instructions in this manual before operating the pump or
preparing it for use. Always follow all safety precautions and
instructions, including those that are contained within the
procedures of this manual.
• Operating procedures will vary, depending on the system
arrangement and the specific components being used.
Always read, follow and completely understand all
manufacturer's instructions when operating cylinders,
valves and any other hydraulic devices used with the pump.
Follow all safety precautions contained in the manufacturer's
manuals.
1
WARNING