Reliable Equipment REL-425C Manual

1
RELREL
RELREL
REL-425C425C
425C425C
425C
DISTRIBUTED BY
OPERATORS’ GUIDE
WARNING
All information found in this guide
must be read and understood before
use or testing of this tool. Failure
to read and understand these warnings
and safe handling instructions could result
in severe personal injury and or death.
HYDRAULIC
IMPACT WRENCH
with 7/16” quick change chuck
REL-425CManual 03-09
Shown with optional
7/16” hex X 1/2” square drive impact adapter
and low pressure hydraulic couplers

2
CAUTION
The information in this manual is intended to guide the user in the
use and application of this tool. It is not intended as a substitute
for proper training and experience in safe work practices for this
typeofequipment.
Consult your supervisor or safety personnel if you have any
questions regarding the safe operation of this tool.
DISTRIBUTED BY
REGISTRATION
UPON RECEIPT OF THIS TOOL, COMPLETE THE REGISTRATION BELOW.
COMPANY ______________________________________________________
ADDRESS ______________________________________________________
_______________________________________________________________
PHONE____________________ FAX _______________________________
SERIAL NUMBER ________________________________________________
DATE OF PURCHASE ____________________________________________
DEALER NAME__________________________________________________
THIS SYMBOL INDICATES ITEMS OF EXTREME IMPORTANCE.
Safety of user and others may be in jeopardy if these instructions
are not read and understood.

3
TABLE OF CONTENTS
DESCRIPTION.............................................................................3
TOOL SPECIFICATIONS ...........................................................4
SOURCE SPECIFICATIONS......................................................4
GENERAL SAFETY INFORMATION..................................... 5-7
HOSES- Fittings,Connectctions,Installation .................................8
HOSES AND FITTINGS (General Information) .............................9
OPERATIONAL SAFETY ......................................................... 10
OPERATING INSTRUCTIONS................................................ 11
MAINTENANCE........................................................................ 12
DISASSEMBLY ....................................................................13-14
ASSEMBLY...........................................................................15-19
PARTS DIAGRAM REL-425 .................................................... 20
PARTS LIST FOR REL-425..................................................... 21
PARTS LIST FOR PRESSURE CONTROL SPOOL ................... 22
INTRODUCTION & SPECIFICATIONS FOR REL-425C...... 23
PARTS DIAGRAM REL-425C ................................................. 24
PARTS LIST FOR REL-425C.................................................. 25
PARTS LIST REL-425C O/C CONTROL SPOOL....................... 26
USING REL-425TS (TEST STAND) ........................................ 27
MAINTENANCE RECORD ...................................................... 28
DESCRIPTION
The REL-425C is a user friendly hydraulic impact tool that has broad applications for
the utility and construction industries. Delivering 425 ft.lbs. of torque at 6 gpm, this
tool is great for drilling, loosening rusted hardwear, or tightening lag bolts with ease.
The tool is well balanced to feel comfortable and secure. The trigger is designed to
be responsive in a heavily gloved hand enabling the user smooth, easily controlled
operation. The dual system actuating spool can be switched from open center to
closed center by simply turning the selector knob completely. A readily accessible
reversing spool allows unconstrained direction control. The handle is coated with a
heat protecting material which aids in handling the tool in adverse conditions.
The REL-425 comes with the standard 7/16” hex in the nose with an E-Z grip quick-
release chuck to readily change from square adapters for sockets to various tools
such as drills and augers.

4
TOOL SPECIFICATIONS
Length....................................................................................... 8.6" (21.8cm)
Width .......................................................................................... 2.7" (6.8 cm)
Height....................................................................................... 8.8" (21.8 cm)
Weight .....................................................................................6.3 lb. (2.8 kg)
Output Torque ............................... 425 ft lb. @ 5-6 gpm (recommended)
NOTE: TORQUEMAYVARYWITH TRUCK PRESSUREAND HYDRAULICFLOW
Pressure Port .............................................................. 9/16-18 SAE Thread
Return Port .................................................................... 3/4-16 SAE Thread
Drive.....................................7/16 Hex Socket (Removable 1/2" Sq. Drive)
Hyd. System Type .......................................E-Z Open and Closed Center
SPECIFICATIONS
Hydraulic Power Source
Flow: Min......................................................................4 gpm (5.1 lpm)
Recommended..........................................5-8 gpm (19-30 lpm)
Flow Range................................................4-8 gpm (15-45 lpm)
Optimum Flow...............................................6 gpm* (12.7 lpm)
RPM ........................................................................................3,600 @ 6 gpm
Operating Pressure Min............................................... 1,300 psi (69 bar)
Operating Pressure Max............................................. 2,000 psi (138 bar)
Pressure Relief Setting...................................... 2,000 psi Max. (138 bar)
Back Pressure...................................................................200 psi (13.8bar)
Filtration .............................................................................10 microns Max.
Hydraulic System........................E-Z Select for Open or Closed Center
Fluid Temperature, Max.......................................................140OF (60OC)
* Checked with Flowmeter on Pressure Line
Relief Valve not to exceed 2000 psi
Flow not to exceed 8 gpm
WARNING

5
WARNING
BEFORE USING THIS TOOL, READ THE WARNINGS
and the recommended practices described in this manual.
Failure by the operator to read and fully understand these
warnings will leave this person unqualified to use and
operate this tool. Property damage, severe personal injury,
and/or death could result by not following these warnings.
Eye
Protection
These warnings will appear in appropriate locations when they are pertinent to the
particular subject being shown. Read each one carefully and follow them strictly.
WARNING
Always wear eye protection to avoid
injury from flying debris or hydraulic
oil leaks. Failure to do so can result
in serious personal injury.
Hard Hat
WARNING
Alwayswear a hard hat toavoid injury
from falling debris. Failure to do so
can result in serious personal injury.
Hearing
Protection
WARNING
Always wear hearing protection,
to avoid hearing loss due to long
term exposure to high noise levels.
Foot
Protection
WARNING
Always wear foot protection.
Failure to do so can result in serious
personal injury.
Dust Mask
WARNING
Always wear a dust mask. Failure to
observe this warning may result
in serious health issues and/or
breathing difficulty.
WARNING
Protective
Gloves
Always wear protective gloves
Failure to do so can result in serious
personal injury.