New Holland EHSO.B User manual

SHOP MANUAL
EH50.B
HYDRAULIC EXCAVATORS
TABLE
OF CONTENTS
SECTION 1
STANDARD SPECIFICATIONS AND MAINTENANCE
Table of Contents ................................................................... I
(Book/Form Number: 6-78620 NA)
CHAPTER 1
GENERAL INFORMATION AND SAFETY
Table of Contents ........................................................................... 1-1
(Book/Form Number: 6-78630 NA)
CHAPTER 2
SPECIFICATIONS
Table of Contents ........................................................................... 2-1
(Book/Form Number: 6-78640 NA)
CHAPTER3
ATTACHMENT DIMENSIONS
Table of Contents ........................................................................... 3-1
(Book/Form Number: 6-78650 NA)
CHAPTER 11
TOOLS
Table of Contents .......................................................................... 11-1
(Book/Form Number: 6-78660 NA)
CHAPTER12
STANDARD MAINTENANCE TIME TABLE
Table of Contents .......................................................................... 12-1
(Book/Form Number: 6-78670 NA)
CHAPTER13
MAINTENANCE STANDARDS AND TEST PROCEDURES
Table of Contents .......................................................................... 13-1
(Book/Form Number: 6-78680 NA)
SECTION 2
HYDRAULIC, ELECTRICAL, AND COMPONENT SYSTEMS
Table of Contents ................................................................... I
(Book/Form Number: 6-78690 NA)
CHAPTER 22
HYDRAULIC SYSTEM
Table of Contents .......................................................................... 22-1
(Book/Form Number: 6-78700 NA)
CHAPTER 23
ELECTRICAL SYSTEM
Table of Contents .......................................................................... 23-1
(Book/Form Number: 6-78710 NA)
CHAPTER 24
COMPONENTS SYSTEM
Table of Contents .......................................................................... 24-1
(Book/Form Number: 6-78720 NA)
6-78610NA Issued 1-05 Bur

SECTION 3
DISASSEMBLY AND ASSEMBLY
Table of Contents
.................................................................... I
(Book/Form Number: 6-78730 NA)
CHAPTER31
GENERAL DISASSEMBLY AND ASSEMBLY
Table of Contents .......................................................................... 31-1
(Book/Form Number: 6-78740 NA)
CHAPTER32
ATTACHMENTS
Table of Contents .......................................................................... 32-1
(Book/Form Number: 6-78750 NA)
CHAPTER33
UPPER SLEWING STRUCTURE
Table of Contents .......................................................................... 33-1
(Book/Form Number: 6-78760 NA)
CHAPTER34
TRAVEL SYSTEM
Table of Contents .......................................................................... 34-1
(Book/Form Number: 6-78770 NA)
SECTION 4
TROUBLESHOOTING
Table of Contents
.................................................................... I
(Book/Form Number: 6-78780 NA)
CHAPTER42
TROUBLESHOOTING (HYDRAULIC SYSTEM)
Table of Contents .......................................................................... 42-1
(Book/Form Number: 6-78790 NA)
CHAPTER43
TROUBLESHOOTING (ELECTRICAL SYSTEM)
Table of Contents .......................................................................... 43-1
(Book/Form Number: 6-78800 NA)
CHAPTER44
TROUBLESHOOTING (ENGINE)
Table of Contents .......................................................................... 44-1
(Book/Form Number: 6-78810 NA)
SECTION 5
ENGINE
II
Table of Contents .................................................................... I
(Book/Form Number: 6-78820 NA)
CHAPTER51
THIS MANUAL EXPLAINS THE ENGINE PROPER AND IS FAITHFUL TO
YANMAR DIESEL ENGINE'S SERVICE MANUALS.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
(Book/Form Number: 6-78580 NA)
Issued 1-05 Bur 6-78610NA
Find manuals at https://best-manuals.com

II
I\EW HOLLAN)
SHOP MANUAL -SECTION 1
EHSO.B
HYDRAULIC EXCAVATORS
STANDARD SPECIFICATIONS
AND MAINTENANCE
Issued January, 2005
Book/Form Number 6-78620
NA
Copyright© 2005. CNH America, LLC. All Rights Reserved.
Printed
in U.S.A. • Bur
Source Code No. S5PJ0010E01-KO01
Find manuals at https://best-manuals.com

SECTION 1 - STANDARD SPECIFICATIONS AND MAINTENANCE
CNH America, LLC reserves the right to make improvements in design or changes in specifications at anytime without incurring any
obligation to install them on units previously sold.
All data given in this publication is subject to production variations. Dimensions and weights are only approximate. Illustrations do
not necessarily show products
in standard condition. For exact information about any particular product, please consult your Dealer
Revision History
Issue Issue Date Applicable Machines Remarks
First Edition August, 2004 EH50.B: PJ04-03001 S5PJ0210E01 (Section 1 title page)
Find manuals at https://best-manuals.com

CHAPTER 1
SECTION 1 - HYDRAULIC, ELECTRICAL, AND COMPONENT SYSTEMS
CHAPTER O- COMPONENTS SYSTEM
SECTION 1
STANDARD SPECIFICATIONS AND MAINTENANCE
TABLE OF CONTENTS
GENERAL INFORMATION AND SAFETY
TABLE OF CONTENTS ............................................................... 1-1
1.1 General Safety Information ........................................................ 1-3
1.2 Safety Precautions
............................................................... 1-4
1.3 General Precautions for Repairs
.................................................... 1-6
1.4 International Unit Conversion System
................................................ 1-9
CHAPTER 2
SPECIFICATIONS
TABLE OF CONTENTS ............................................................... 2-1
2.1 Components Name .............................................................. 2-3
2.2 Machine Dimensions
............................................................. 2-4
2.3 Specifications and Performance
.................................................... 2-5
2.4 Machine and Components Weights (Dry)
............................................. 2-6
2.5 Transportation
.................................................................. 2-7
2.6 Type of Track Shoes
............................................................. 2-9
2.7 Type of Bucket.
................................................................. 2-9
2.8 Engine Specifications
........................................................... 2-10
CHAPTER3
ATTACHMENT DIMENSIONS
TABLE OF CONTENTS ............................................................... 3-1
3.1 Boom ......................................................................... 3-3
3.2 Arm
.......................................................................... 3-8
3.3 Bucket
....................................................................... 3-13
3.4 Dozer
........................................................................ 3-15
3.5 Swing
........................................................................ 3-18
CHAPTER 11
TOOLS
TABLE OF CONTENTS .............................................................. 11-1
11.1 Torque Specifications for Capscrews and Nuts ....................................... 11-3
11 .2 Screw and Tool Sizes .......................................................... 11-5
11.3 Torque Specifications for Joints and Hoses
......................................... 11-6
11.4 Torque Specifications for Sleeve Type Tube Fittings
.................................. 11-7
11.5 Plugs
....................................................................... 11-8
11.6 Special Spanners for Tubes
.................................................... 11-10
11.7 Special Tools
................................................................ 11-11
11.8 Application of Screw Locking and Sealing Compounds ............................... 11-11
11.9 Counterweight Lifting Jig ....................................................... 11-12
11.1 O Upper Frame Lifting Jig ....................................................... 11-13
CHAPTER12
STANDARD MAINTENANCE TIME TABLE
TABLE OF CONTENTS .............................................................. 12-1
12.1 Working Standards for Time Tables ............................................... 12-3
12.2 Time Tables
.................................................................. 12-4
6-78620 NA Issued 1-05 Bur
0-1
Find manuals at https://best-manuals.com

SECTION 1 - HYDRAULIC, ELECTRICAL, AND COMPONENT SYSTEMS
CHAPTER O- COMPONENTS SYSTEM
CHAPTER13
MAINTENANCE STANDARDS AND TEST PROCEDURES
TABLE OF CONTENTS ............................................................... 13-1
13.1 How To Use Maintenance Standards and Precautions ................................. 13-3
13.2 Performance Inspection Standard Tables
........................................... 13-4
13.3 Measuring Engine Speed
........................................................ 13-6
13.4 Measuring Hydraulic Oil Pressure
................................................. 13-8
13.5 Measuring Travel Performances
.................................................. 13-11
13.6 Measuring Slew Performances ................................................... 13-13
13.7 Measuring Attachment Operating Performances
..................................... 13-15
13.8 Measuring Slew Bearing Performances
............................................ 13-17
13.9 Measuring Track Tension
....................................................... 13-18
0-11
Issued 1-05 Bur 6-78620 NA
Find manuals at https://best-manuals.com

SECTION 1 - STANDARD SPECIFICATIONS AND MAINTENANCE
CHAPTER 1
EHSO.B
HYDRAULIC EXCAVATORS
GENERAL INFORMATION AND
SAFETY
Issued January, 2005
Book/Form Number 6-78630
NA
Copyright© 2005. CNH America, LLC. All Rights Reserved.
Printed
in U.S.A. • Bur
Source Code No. S5PJ0010E01-KO01
Find manuals at https://best-manuals.com

SECTION 1 - STANDARD SPECIFICATIONS AND MAINTENANCE
CHAPTER 1 - GENERAL INFORMATION AND SAFETY
CNH America, LLC reserves the right to make improvements in design or changes in specifications at anytime without incurring any
obligation to install them on units previously sold.
All data given in this publication is subject to production variations. Dimensions and weights are only approximate. Illustrations do
not necessarily show products
in standard condition. For exact information about any particular product, please consult your Dealer
Revision History
Issue I Issue Date I Applicable Machines I Remarks
First Edition I August, 2004 I EH50.B:
PJ04-03001-
I S5PW0106E01 (CNH North America) I KE
1-11
Issued 1-05 Bur 6-78630 NA
Find manuals at https://best-manuals.com

SECTION 1 - STANDARD SPECIFICATIONS AND MAINTENANCE
CHAPTER 1
GENERAL INFORMATION AND SAFETY
TABLE OF CONTENTS
1.1 GENERAL SAFETY INFORMATION
1.2 SAFETY PRECAUTIONS
1.3 GENERAL PRECAUTIONS FOR REPAIRS
1.3.1 Preparation Before Disassembling ..................................................... 1-6
1.3.2 Safety
In Disassembling and Assembling ............................................... 1-6
1.3.3 Disassembling and Assembling Hydraulic Equipment
...................................... 1-6
1.3.4 Electrical Equipment
................................................................ 1-7
1.3.5 Hydraulic Parts
.................................................................... 1-8
1.3.6 Welding Repair
.................................................................... 1-8
1.3.7 Environmental Protection
............................................................ 1-8
1.4 INTERNATIONAL UNIT CONVERSION SYSTEM
Introduction
........................................................................... 1-9
6-78630 NA Issued 1-05 Bur
1-1
Find manuals at https://best-manuals.com

1-2
SECTION 1 - STANDARD SPECIFICATIONS AND MAINTENANCE
CHAPTER 1 - GENERAL INFORMATION AND SAFETY
NOTES
Issued 1-05 Bur 6-78630 NA
Find manuals at https://best-manuals.com

SECTION 1 - STANDARD SPECIFICATIONS AND MAINTENANCE
CHAPTER 1 - GENERAL INFORMATION AND SAFETY
1.1 GENERAL SAFETY INFORMATION
WARNING: Do not operate or perform any
maintenance on this machine until all
J\. instructions in the OPERATOR'S MANUAL
... and this MANUAL have been thoroughly
read
and understood.
WARNING: Improper operation or
A maintenance of this machine may cause
..a. accidents and couldresultin serious injury or
death.
WARNING: Always keep the manual in
storage.
If it is missing or damaged, place an order
A with an authorized Distributor for a
replacement.
If you have any questions, please consult
your dealer.
1. Most accidents, which occur during operation,
are due to neglect of precautionary measures
and safety rules. Sufficient care should
be taken
to avoid these accidents. Erroneous operation,
lubrication or maintenance services are very
dangerous and may cause injury or death of
personnel. Therefore all precautionary
measures, NOTES, DANGERS, WARNINGS and
CAUTIONS contained in the manual and on the
machine should be read and understood by all
personnel before starting any work with or on the
machine.
2. Operation, inspection, and maintenance should
be carefully carried out, safety must be given the
first priority. The safety information contained in
the manual is intended only to supplement safety
codes, insurance requirements, local laws, rules
and regulations.
6-78630 NA Issued 1-05 Bur
3. Messages of safety appear in the manual and on
the machine:
All messages of safety are identified by either
word of DANGER, WARNING, and CAUTION.
DANGER: Shows an imminently hazardous
A situation which, if not avoided, will result in
death
or serious injury.
WARNING: Shows a potentially hazardous
A situation which, if not avoided, couldresultin
death or serious injury.
CAUTION: Shows a potentially hazardous
situation which,
if not avoided, may result in
A minor or moderateinjury. It may alsobeused
..a. to alert against possible damage to the
machine
and its components.
4. It is very difficult to foresee every danger that
may occur during operation. However, safety can
be
ensured by fully understanding proper
operating procedures for this machine according
to methods recommended.
5. While operating the machine, be sure to perform
work with great care, so no damage to the
machine or accidents will occur.
6. Continue studying the manual until all Safety,
Operation and Maintenance procedures are
completely understood by all persons working
with the machine.
1-3

SECTION 1 - STANDARD SPECIFICATIONS AND MAINTENANCE
CHAPTER 1 - GENERAL INFORMATION AND SAFETY
1.2 SAFETY PRECAUTIONS
WARNING: The proper lubrication and
h maintenance for this machine are outlined in
.. the OPERATOR'S MANUAL.
WARNING: Improper lubrication and
maintenance procedures are dangerous and
A could result in injury or death. Read and
understand the MANUAL before performing
maintenance
or adding/changing lubricants.
The serviceman may
be unfamiliar with many of the
systems
on this machine. This makes it important to
use caution when performing service work. A
knowledge of the system and or components is
important before the removal or disassembly of any
component.
Because of the size of some of the machine
components, the serviceman should check the
weights noted in this manual. Use proper lifting
procedures when removing any components. Weight
of components table is shown in the
SPECIFICATIONS section.
The following is a list of basic precautions that must
always be observed.
1. Read and understand all Warning plates and
decals on the machine before Operating,
Maintaining or Repairing machine.
2. Always wear protective glasses and protective
shoes when working around machines. Wear
protective glasses when using hammers,
punches or drifts on any part of the machine or
attachments. Use welders gloves, hood/goggles,
apron and the protective clothing appropriate to
the welding job being performed. Do not wear
loose fitting or torn clothing. Remove all rings
from fingers, loose jewelry, confine long hair and
loose clothing before working
on this machinery.
3. Disconnect the battery and hang a "Do Not
Operate" tag in the Operators Compartment.
Remove ignition
keys.
4. If possible, make all repairs with the machine
parked on a level, hard surface. Block the
machine so it does not roll while working on or
under the machine. Hang a "Do Not Operate" tag
in the Operators Compartment.
5. Do not work on any machine that is supported
only by jacks or a hoist. Always use blocks or
jack stands capable of supporting the machine.
1-4
WARNING: Do not operate this machine
unless you have read and understand the
A instructions in the OPERATOR'S MANUAL.
Improper machine operation is dangerous
andcould result
in injury or death.
6. Relieve all pressure in air, oil or water systems
before any lines, fittings
or related items are
disconnected or removed. Always make sure all
raised components are blocked correctly and be
alert for possible pressure when disconnecting
any device from a system that utilizes pressure.
7. Lower the bucket, dozer, or other attachments to
the ground before performing any work on the
machine. If this cannot be done, make sure the
bucket, dozer,
ripper or other attachment is
blocked correctly to prevent it from dropping
unexpectedly.
8. Use steps and grab handles when mounting or
dismounting a machine. Clean any mud or debris
from steps, walkways or work platforms before
using. Always face to the machine when using
steps, ladders and walkways. When it is not
possible to use the designed access system,
provide ladders, scaffolds, or work platforms to
perform safe repair operations.
9. To avoid back injury, use a hoist when lifting
components which weigh 20kg (45Ibs) or more.
Make sure all chains, hooks, slings, etc., are
in
good condition and are the correct capacity. Be
sure hooks are positioned correctly. Lifting eyes
are not to be side loaded during a lifting
operation.
10. To avoid burns, be alert for hot parts on
machines which have just been stopped and hot
fluids in lines, tubes and compartments.
11. Be careful when removing cover plates.
Gradually back off the last two capscrews or nuts
located at opposite ends of the cover or device
and
carefully pry cover loose to relieve any
spring
or other pressure, before removing the
last two capscrews or nuts completely.
12. Be careful when removing filler caps, breathers
and plugs
on the machine. Hold a rag over the
cap
or plug to prevent from being sprayed by
liquids under pressure. The danger is even
greater if the machine has
just been stopped
because fluids can be hot.
Issued 1-05 Bur 6-78630 NA

SECTION 1 - STANDARD SPECIFICATIONS AND MAINTENANCE
CHAPTER 1 - GENERAL INFORMATION AND SAFETY
13. Always use the proper tools that are in good
condition and that are suited for the job.
Be sure
you understand how to use them before
performing any service work.
14. Reinstall all fasteners with the same part
number. Do not use a lesser quality fastener if
replacements are necessary.
15. Repairs which require welding should be
performed by personnel adequately trained and
knowledgeable in welding procedures.
Determine type of metal being welded and select
correct welding procedure and electrodes, rods
or wire to provide a weld strength equivalent at
least to that of the parent metal. Make sure to
disconnect battery before any welding
procedures are attempted.
16. Do not damage wmng during removal
operations. Reinstall the wiring so it will not be
damaged during operation of the machine by
contacting sharp corners, or by rubbing against
some object or hot surface.
17. Be sure all protective devices including guards
and shields are properly installed correctly before
starting repair. If a guard or shield must be
removed to perform the repair work, replace the
guard or shield after repair
is completed.
6-78630 NA Issued 1-05 Bur
18. Performing maintenance or repair work with the
bucket raised is dangerous due to the possibility
of it falling. Lower the attachment and place the
bucket
on the ground before starting the work.
19. Loose or damaged fuel, lubricant and hydraulic
lines, tubes and hoses can cause fires. Do not
bend or strike high pressure lines or install ones
which have been bent or damaged. Inspect lines,
tubes and hoses carefully.
Do not check for leaks
with your hands. Very small (pinhole) leaks can
result in a high velocity oil stream that will be
invisible close to the hose. This oil can penetrate
the skin and cause personal injury. Use card-
board or paper to locate pinhole leaks.
20. Tighten connections to the correct torque. Make
sure that all heat shields, clamps and guards are
installed correctly to avoid excessive heat,
vibration or rubbing against other parts during
operation. Shields that protect against oil spray
onto hot exhaust components
in event of a line,
tube or seal failure must be installed correctly.
21.
Do not operate a machine if any rotating part is
damaged or contacts any other part during
operation. Any high speed rotating component
that has been damaged or altered should be
checked for balance before reusing.
22.
Be careful when servicing or separating the
tracks. Chips can fly when removing or installing
a track pin. Wear safety glasses and long sleeve
protective clothing. Tracks can unroll very quickly
when separated. Keep away from front and rear
of machine. The machine can move
unexpectedly when both tracks are disengaged
from the sprockets. Block the machine to prevent
it from moving.
1-5

SECTION 1 - STANDARD SPECIFICATIONS AND MAINTENANCE
CHAPTER 1 - GENERAL INFORMATION AND SAFETY
1.3 GENERAL PRECAUTIONS FOR REPAIRS
1.3.1 PREPARATION BEFORE DISASSEMBLING
w
ReedOperntor'sMenuel
befcre d1sassembl1n~
1. Understand operating procedure
Read OPERATOR'S MANUAL and this MANUAL
carefully prior to operating the machine.
2. Cleaning machines
Remove soil, mud, and dust from the
machine
before service. This will prevent loss of work
efficiency, damaged parts, and difficulty in rust
prevention and dust protection while
reassembling.
3. Inspecting machines
Identify the parts to be disassembled before
starting work, determine the disassembling
procedure considering the workshop situations
etc., request necessary parts in advance.
4. Record the following items
A. Inspection date and place
B. Model name, applicable machine number, and
hour meter reading
C. Trouble condition, place and cause.
D. Visible oil leakage, water leakage and damage
E. Clogged filters, oil level, oil quality, oil
contamination and loose connections
F. Is it a recurring fault at approximately the
same amount of operating hours.
5. Arrangement and cleaning in service shop
A. Tools required for repair work.
B. Prepare space to place the disassembled
parts.
C. Prepare oil containers for draining oil etc.
1.3.2 SAFETY IN DISASSEMBLING AND
ASSEMBLING
1. Wear appropriate clothes with long sleeves,
safety shoes, safety helmet and protective
glasses.
2. Suspend warning tag DO NOT OPERATE from
the doorknob or the operating lever.
3. Stop the engine before starting inspection and
maintenance.
1-6
4. Identify the location of a first-aid kit and a fire
extinguisher, also
who to contact in case of an
emergency.
5. Choose a hard, level and safe place, and place
the attachment on the ground securely.
6. Use a hoist to remove heavy parts (20 kg [45 lbs]
or more) from the machine.
7. Use proper tools, and replace or repair defective
tools.
8. Support the machine and attachment with
supports or blocks if the work is performed
in the
lifted condition.
1.3.3 DISASSEMBLING AND ASSEMBLING
HYDRAULIC EQUIPMENT
1. Removing hydraulic equipment
A. Before disconnecting pipes, release the
hydraulic pressure in the system.
B. Carefully drain oil of the removed pipes into a
containers without spilling on the floor.
C. Install plugs or caps on the pipe ends to avoid
oil spillage and contamination.
D. Clean off the external surface of the
equipment before disassembling, drain
hydraulic and gear oil before placing
component on the workbench.
2. Disassembling hydraulic equipment
A. Do not modify the hydraulic equipment without
the permission of the manufacturer.
Manufacturer will not be responsible for the
performance and function of the product after
modification.
B. When disassembling and reassembling for
repair, refer the
work to qualified personnel
who have the knowledge or have completed
the service training.
C. Provide aligning marks to facilitate
reassembly.
D. Before starting the work, read the manual for
disassembly procedures and decide whether
the
work can be performed by yourself or if
assistance is required.
E. Use the special jig or tools if they are
specified.
Issued 1-05 Bur 6-78630 NA

SECTION 1 - STANDARD SPECIFICATIONS AND MAINTENANCE
CHAPTER 1 - GENERAL INFORMATION AND SAFETY
F. If it is hard to remove a part according to the
procedure, do not force it, investigate the
cause.
G. Place the removed parts in order and attach
tags to facilitate the reassembly.
H. Note the location and quantity of parts
commonly applied to multiple locations.
3. Inspecting parts
A. Ensure that the disassembled parts are free
from seizure, interference and uneven contact.
B. Measure and record wear condition of parts
and clearance.
C. If the problem is found in a part, repair or
replace
it.
4. Reassembling hydraulic equipment
A. Turn ON the ventilation fan or open windows
to maintain good ventilation prior to cleaning
parts.
B. Perform rough and finish cleaning before
assembling.
C. Remove solvent by air and apply clean
hydraulic or gear oil for assembling.
D. Always replace the removed O-rings, backup
rings and oil seals with new ones by applying
grease
in advance.
E. Remove dirt and moisture from and perform
degreasing on the surface where liquid gasket
are to be applied.
F. Remove rust preventive agent from the new
parts before use.
G. Fit bearings, bushings and oil seals using
proper tools.
H. Assemble the parts utilizing matching marks.
I. Ensure all the parts are completely assembled
after the work.
5. Installing hydraulic equipment
A. Ensure hydraulic oil and lubricants are at
proper levels.
B. Perform air bleeding when:
• Hydraulic oil changed
• Parts of suction piping replaced
• Hydraulic pump installed
• Slewing motor installed
•
Travel motor installed
• Hydraulic cylinder installed
WARNING: Operation of the hydraulic
A equipment without filling hydraulic oil or
.. lubricant or without performing air bleeding
will result
in damage to the equipment.
6-78630 NA Issued 1-05 Bur
C. Perform air bleeding of the hydraulic pump
and slewing motor after loosening the upper
drain plug, start and run the engine at low idle.
Air bleeding
is completed when clear hydraulic
oil
is visible, tighten plug.
D. Perform air bleeding of the travel motor and
the hydraulic cylinders
by running the engine
for more than 5 minutes at low speed without
load.
NOTE: Do notallowhydraulic cylinders to bottom
out on the stroke end just aftermaintenance.
E. Perform air bleeding of pilot line by performing
a
series of digging, slewing and travel
operations.
F. Check hydraulic oil level after placing the
attachment to the oil check position, and
replenish
oil if necessary.
Checking hydraulic oil level
Level gauge
1.3.4 ELECTRICAL EQUIPMENT
Oil level lines (Level
located between the
two lines shows
appropriate amount
of oil)
Figure 1
1. Turn the key OFF prior to connecting and
disconnecting connectors.
2. Disconnect the connector by holding it and
pressing the lock. Do not pull on the wires to
separate connectors.
3. Connect the connector and ensure it is
completely locked.
4. Turn the key OFF prior to touching the terminal of
starter or generator.
5. Remove the ground terminal of battery when
handling tools around the battery or its
relay.
6. Do not splash water on the electrical equipment
and connectors during machine washing.
7. Check for moisture inside the waterproof
connector after disconnection it. If moisture is
found, dry it completely before reconnecting.
1-7

SECTION 1 - STANDARD SPECIFICATIONS AND MAINTENANCE
CHAPTER 1 - GENERAL INFORMATION AND SAFETY
WARNING: Battery electrolyte is
hazardous.
Battery electrolyte is diluted sulfuric acid.
Exposure
of skin or eyes will cause burning
orloss
of eyesight.
If the exposure occurs, take the following
emergencymeasures andseekthe advice
of
a medical specialist.
•
When skin exposed:
h • Wash with water andsoap sufficiently.
.. When eyes exposed:
Immediately wash away with water
continuously for more than
10 minutes.
• If a large spill occurs:
Neutralize with sodium bicarbonate or
wash away with water.
• When swallowed:
Drinka large amount of milk or water.
• When clothes exposed:
Immediately undress and wash.
1.3.5 HYDRAULIC PARTS
[I]
1. 0-ring
• Make sure 0-rings have elasticity and are not
damaged before use.
• Use the appropriate 0-rings.
0-rings are made
of various kinds of materials having different
hardness to apply to a variety of parts, such as
the part for moving or fixed portion, subjected to
high pressure, and exposed to corrosive fluid,
even if the size is the same.
• Install the
0-rings without distortion.
• Replace floating seals as a pair.
1-8
2. Flexible hose
• Use approved parts.
• Tighten the fitting at the specified torque.
• Ensure no kinks, tension, interference nor oil
leakage are present.
1.3.6 WELDING REPAIR
1. Refer welding repair to qualified personnel.
2. Disconnect the ground cable of the battery
before starting the repair. Failure to do
so will
cause damage to the electrical equipment.
3. Move away the articles in advance that may
cause fire if exposed to sparks.
4. Before starting the repair of the attachment,
cover the plated surface of the piston rod with
flameproof sheet to prevent it from being
exposed to sparks.
1.3.7 ENVIRONMENTAL PROTECTION
1. Run the engine in a place that has sufficient
ventilation.
2. Industrial waste disposal
Dispose of the following parts according to the
relevant regulations:
• Waste oil and waste container
• Battery
3. Precautions for handling hydraulic oil
Exposure of eyes to hydraulic oil will cause
inflammation. Wear protective glasses before
handling to avoid an accident. If eyes are
exposed to the oil, take the following emergency
measures:
When eyes are exposed:
• Immediately wash away with water until
stimulative feeling vanishes.
When swallowed:
•
Do not let vomit, seek medical treatment
immediately.
When skin exposed:
• Wash with water and soap sufficiently.
4. Others
Use genuine replacement parts and lubricants
authorized by the manufacturer.
Issued 1-05 Bur 6-78630 NA

SECTION 1 - STANDARD SPECIFICATIONS AND MAINTENANCE
CHAPTER 1 - GENERAL INFORMATION AND SAFETY
1.4 INTERNATIONAL UNIT CONVERSION SYSTEM
INTRODUCTION
NOTE: Information based on MARKS' STANDARD
HANDBOOKFOR MECHANICAL ENGINEERS
Although this manual includes International System
of Unit and Foot-Pound System of Units, if you need
SI unit, refer to the following international system of
units.
Given is an excerpt of the units that are related to this
manual.
1. Etymology of
SI Unites
French: Le Systeme International d' Unites
English: International System of Units
2. Construction of
SI Unit System
~ Base units
Table
1-1
Derived units
of base units
Supplemen Table 1-3
r ~ SI units ~._ tary units
SI unit • Table 1-2 Derived units
system bearing peculiar
Derived r designations
units Table 1-4
Prefixes of
SI
(n-th power of 10, where n is an integer)
Table 1- 5
SPW01000007E01
Figure 2
1. Base units
QUANTITY UNIT SYMBOL
Length meter m
Mass kilogram
kg
Time second s
Electric current ampere A
Thermodynamic temperature kelvin K
Amount of substance mol mol
Luminous intensity candela
cd
2. Derived Units
QUANTITY UNIT SYMBOL
Area square meter
m2
Volume cubic meter
m3
Velocity meter per second m/s
Acceleration meter per second squared m/s2
Density kilogram per cubic meter kg/m3
6-78630 NA Issued 1-05 Bur
3. Supplementary units
QUANTITY UNIT SYMBOL
Plane angle radian rad
Solid angle steradian sr
4. Derived Units bearing Peculiar Designations
QUANTITY UNIT SYMB FORMULA
OL
Frequency hertz Hz 1/s
Force newton N
kg• m/s2
Pressure and Stress pascal
Pa
N/m2
Energy, Work and joule J
N-m
Quantity of heat
Power watt w J/s
Quantity of electricity coulom C A-s
b
Electric potential
difference, Voltage, volt V W/A
and Electromotive
force
Quantity of static
electricity and farad F
CN
Electric capacitance
Electric resistance ohm Q V/A
Celsius
Celsius temperature degree
oc
(t+273.15
or
)K
degree
llluminance lux
Ix
I m/m2
5. Prefixes of SI
PREFIX SYMBOL MULTIPLICATION
FACTORS
giga G 1
o9
mega M 106
kilo k 1
o3
hecto h 102
deca da 10
deci d 10-1
centi C 10-2
milli m 10-3
micro m
10--6
nano n 10-9
pico p 10-12
1-9

6. Unit Conversion
QUANTITY
Mass
Force
Torque
Pressure
Motive Power
Revolution
*1 Units that are allowed to use.
1-10
SECTION 1 - STANDARD SPECIFICATIONS AND MAINTENANCE
CHAPTER 1 - GENERAL INFORMATION AND SAFETY
GRAVITATIONAL SI
kg kg
kgf N
kgf•m Nm
kgf/cm2 MPa
PS kW
rpm
min-
1
Issued 1-05 Bur
CONVERSION FACTOR
1 kgf=9.807 N
kgf•m=9.807 N•m
1 kgf/cm2=0.09807 MPa
1 PS=0.7355 kW
r/min
*1
6-78630 NA

SECTION 1 - STANDARD SPECIFICATIONS AND MAINTENANCE
CHAPTER2
EHSO.B
HYDRAULIC EXCAVATORS
SPECIFICATIONS
Issued January, 2005
Book/Form Number 6-78640
NA
Copyright© 2005. CNH America, LLC. All Rights Reserved.
Printed
in U.S.A. • Bur
Source Code No. S5PJ0010E01-KO02

SECTION 1 - STANDARD SPECIFICATIONS AND MAINTENANCE
CHAPTER 2 - SPECIFICATIONS
CNH America, LLC reserves the right to make improvements in design or changes in specifications at anytime without incurring any
obligation to install them on units previously sold.
All data given in this publication is subject to production variations. Dimensions and weights are only approximate. Illustrations do
not necessarily show products
in standard condition. For exact information about any particular product, please consult your Dealer
Revision History
Issue Issue Date Applicable Machines Remarks
First Edition August, 2004 EH50.B: PJ04-03001 S5PJ0210E01 (CNH North America) I KE
I
2-11
Issued 1-05 Bur 6-78640 NA