SUNWARD SWE20F 2019 Troubleshooting guide

Operation & Maintenance
Manual
SWE20F
Hydraulic Excavator
SUNWARD INTELLIGENT EQUIPMENT CO., LTD.
Sunward Intelligent Industrial Park, Xingsha, Changsha, China
Sept.2019

I
FOREWORD
This manual provides rules and guidelines which will help you use this machine safely and
effectively. The precautions in this manual must be followed at all times when performing
operation and maintenance. Most accidents are caused by the failure to follow fundamental
safety rules for the operation and maintenance of machines. Accidents can be prevented by
knowing beforehand conditions that may cause hazard when performing operation and
maintenance.
Operators and maintenance personnel must always do as follows before beginning operation or
maintenance.
Always be sure to read and understand this manual thoroughly before performing operation
and maintenance.
Read the safety message given in this manual and the safety labels affixed to the machine
thoroughly and be sure that you understand them fully.
This manual should be considered as a permanent part of your machine. If you sell the
machine, be sure to give this manual to the new owners together with the machine.
Only original spare parts procured from Sunward are to be used. To use parts of poor quality
will be detrimental to machine’s overall performance.
All operation described in this instruction manual should be carried out exclusively by trained
and qualified staff.
This machine is designed in metric system and the sizes provided in this manual are metric,
therefore, please only use parts and tools in metric system.
Sunward guarantees maintenance to our customers. Please refer to guarantee certificate which
you have obtained from our distributors for maintenance concerns. With a guarantee certificate,
you are entitled to get maintenance from Sunward. In some cases even beyond maintenance
period, Sunward provides maintenance on the spot, which is usually free of charge. However, if
machine is abused or kept in overloading operations or its performance is changed beyond our
original regulations, compensations for maintenance will be unavailable and service on the spot
will probably be refused.
All the information including charts and specifications in this manual is the latest that we can
get. We reserve the right to make without prior notice any modification or amendment to
machine component.
Sunward Intelligent Equipment Co., Ltd

II
TABLE OF CONTENTS
1. SAFETY RULES........................................................................................................................1
1.1 SAFETY MARK ...................................................................................................................1
1.2 SAFETY LABEL ..................................................................................................................1
1.3 GENERAL SAFETY INSTRUCTION.................................................................................1
1.4 PREPARE FOR EMERGENCIES........................................................................................2
1.5 WEAR SAFETY PROTECTIVE ARTICLES......................................................................2
1.6 CHECK MACHINE BEFORE START-UP..........................................................................2
1.7 ADJUST OPERATOR SEAT ...............................................................................................2
1.8 ENTER OR LEAVE MACHINE CORRECTLY .................................................................2
1.9 START ENGINE CORRECTLY..........................................................................................2
1.10 FORBID HITCHING OTHER PEOPLE ............................................................................3
1.11 KEEP MACHINE AWAY FROM ELECTRICITY TRANSMISSION LINE...................3
1.12 MOVE MACHINE SAFELY..............................................................................................3
1.13 PREVENT ACCIDENT WHILE BACKING OR SWINGING .........................................3
1.14 OPERATE DIGGING WORK SAFELY............................................................................4
1.15 AVOID ACCIDENT BY CONTROL FAILURE...............................................................5
1.16 PARK MACHINE SAFELY...............................................................................................5
1.17 SAFE MAINTENANCE .....................................................................................................5
1.18 SUPPORT MACHINE CORRECTLY ...............................................................................6
1.19 CLEAN TRASH ON THE MACHINE...............................................................................6
1.20 PREVENT BATTERY FROM EXPLODING....................................................................6
1.21 STORE PARTS SAFELY...................................................................................................7
1.22 PREVENT SPLASHING OBJECTS ..................................................................................7
1.23 PREVENT PARTS FROM FLYING OFF..........................................................................7
1.24 KEEP AWAY FROM TRANSMISSION PARTS..............................................................7
1.25 AVOID INHALING ASBESTOS DUST ...........................................................................7
1.26 BEWARE OF INHALING FOG OR EXHAUST GAS......................................................8
1.27 BEWARE OF SCALD ........................................................................................................8
1.28 BE CAUTIOUS OF PRESSURE LIQUIDS.......................................................................8
1.29 AVOID HEATING UP NEAR PRESSURE OIL PIPE......................................................8
1.30 AVOID HEATING UP INFLAMMABLE LIQUID PIPE .................................................8
1.31 REMOVE PAINT BEFORE WELDING OR HEATING ..................................................9
1.32 DISPOSE OF LIQUID SAFELY........................................................................................9
1.33 DISPOSE OF CHEMICAL SAFELY.................................................................................9
1.34 AVOID FIRE.......................................................................................................................9
1.35 EMERGENCY EXIT ........................................................................................................10
1.36 NOISE AND VIBRATION........................................................................................................10
1.37 OTHER SAFETY MARKS...............................................................................................11
2. MACHINE FAMILIARIZATION............................................................................................13
2.1 POSITION OF THE VARIOUS MACHINE COMPONENTS..........................................14

III
2.2 CABIN.................................................................................................................................18
2.3 MONITOR PANEL.............................................................................................................19
2.4 WANE CONTROL PANEL................................................................................................22
2.5 START-UP SWITCH..........................................................................................................22
2.6 HEATER..............................................................................................................................23
2.6.1 WORK THEORY .........................................................................................................23
2.6.2 INSTALLATION..........................................................................................................23
2.6.3 OPERATION................................................................................................................23
2.7 RADIO.................................................................................................................................23
2.8 SEAT ADJUSTMENT........................................................................................................24
2.9 PILOT SAFETY LEVER....................................................................................................25
2.10 ENGINE ACCELEROGRAPH SPEED CONTROL LEVER..........................................25
2.11 PILOT OPERATION ........................................................................................................26
2.12 OPEN AND CLOSE FRONT WINDOW.........................................................................28
2.13 AIR DUCTING HOOD AND UPPER-COVER...............................................................28
2.14ACCESSORY AND TOOL LIST......................................................................................29
2.15 IDENTIFIER .....................................................................................................................31
3. MACHINE OPERATION.........................................................................................................31
3.1 MACHINE WORKING ENVIRONMENT........................................................................31
3.2 RUNNING AND OPERATION..........................................................................................31
3.3 OPERATE ENGINE ...........................................................................................................32
3.4 TRAVEL CONTROL..........................................................................................................36
3.4.1 CONTROL TRAVEL WITH PEDAL..........................................................................36
3.4.2 TRAVEL WITH HANDLE CONTROL ......................................................................37
3.4.3 TRAVEL SPEED..........................................................................................................38
3.4.4 TRAVEL BRAKE.........................................................................................................38
3.4.5 OUTLINE OF TRAVEL...............................................................................................38
3.5 EXCAVATION...................................................................................................................40
3.6 LIFT WORK........................................................................................................................48
3.7 HYDRAULIC BREAKING OPERATION ........................................................................49
3.8 BOOM SWING ...................................................................................................................51
4 MAINTENANCE.......................................................................................................................52
4.1 CORRECT MAINTENANCE AND INSPECTION PROCEDURE..................................52
4.2 MAINTENANCE GUIDE...................................................................................................56
4.2.1 ADD LUBRICANT GREASE......................................................................................56
4.2.2 ENGINE OIL ................................................................................................................56
4.2.3 GEAR OIL ....................................................................................................................59
4.2.4 FUEL SYSTEM............................................................................................................61
4.2.5 HYDRAULIC SYSTEM...............................................................................................64
4.2.6 AIR FILTER .................................................................................................................70
4.2.7 COOLING SYSTEM....................................................................................................72
4.2.8 OTHERS .......................................................................................................................75
4.2.9 MAINTENANCE IN SPECIAL SITUATION.............................................................82
4.2.10 PROTECTION FOR LONG TERM STORE .............................................................83

IV
4.2.11 HEATER MAINTENANCE.......................................................................................83
5. TRANSPORTATION AND STORAGE..................................................................................84
6. TROUBLE SHOOTING...........................................................................................................87
7. SPECIFICATIONS...................................................................................................................91
7.1 TECHNICAL PARAMETER .............................................................错误！未定义书签。
7.2 TECHNICAL INTRODUCTION .......................................................................................93
7.3 OPERATION PARAMETER .............................................................................................96
8. ATTACHMENT .......................................................................................................................99
8.1 ELECTRIC DRAWING......................................................................................................99
8.2 HYDRAULIC DRAWING .................................................................错误！未定义书签。
8.3 HYDRAULIC COMPONENT LIST ................................................................................101
9. ABOUT MANUFACTURER.................................................................................................102

1
The safety instructions in this chapter
only include the general safety rules
of machine. They can’t cover all the
possible dangers. If there is any
problem, please report to your superior
before operation and maintenance.
1. SAFETY RULES
1.1 SAFETY MARK
Fig 1-1 is the mark to remind of safety, when you see this
mark on the machine or in the manual book; it indicates that
the human body is in danger of injury.
1.2 SAFETY LABEL
There are various labels at various points of machine, in
these labels, various words indicate various hurt risks, such
as “DANGER”, “WARNIGN”, “CAUTION” etc
(as right figure), they mean as follows:
1) DANGER—indicates an imminently hazardous
situation which, if not avoided, could result in
death or serious injury.
2) WARNING—indicates a potentially hazardous
situation which, if not avoided, could result in
death or serious injury.
3) CAUTION—indicates potentially
hazardous situation which, if not
avoided, may result in minor or
moderate injury.
“DANGER”, “WARNING” safety labels
are stuck at given points of machine
within the range of possible danger.
General attentions listed on the
“CAUTION” safety label. In this manual
book, “CAUTION” also reminds of safety
instruction.
1.3 GENERAL SAFETY INSTRUCTION
Study the manual carefully and follow the safety
instructions in the labels and manual before
operating the machine.
1) Always keep the safety labels clean. Change
any lost or damaged label with a new one. If the
labels or manual book are lost, you can contact
dealer and indicate the model of machine to
purchase a new one.
2) Only qualified operator is permitted to operate this machine. Keep the machine in good
condition as per this manual.

2
3) Don’t refit machine without authorization, otherwise
it will affect the performance and service life of
machine, or may cause human body hurt oreven
death.
1.4 PREPARE FOR EMERGENCIES
All concerned people should be cautious so as to
prevent accident from occurring, and at the same time,
deposit first-aid kit and fire extinguisher nearby, and place
the phone numbers of hospital and fire department near
telephone to ask for help in case of emergency.
1.5 WEAR SAFETY PROTECTIVE ARTICLES
Before operation, always wear protective articles
when the work requires, they include:
Skintight work clothes
Hard hat
Safety gloves
Safety glasses, goggles, or veil
Respirator or filtration veil
Earplug or ear cap
1.6 CHECK MACHINE BEFORE START-UP
Before starting machine every day or every shift,
check the machine according to the contents in “Check
machine before start-up” in this manual.
1.7 ADJUST OPERATOR SEAT
If you use this machine for the first time, or change
operator, the operator should adjust seat to suit himself:
back on the seat, the feet can operate the pedals at ease.
(Refer to 2.8 seat adjustment for details)
1.8 ENTER OR LEAVE MACHINE CORRECTLY
Always face the machine when you use the steps and
hand-holds to enter or leave machine.
Never use any control lever as hand-hold.
Never enter or leave machine when the machine travels,
swings, or digs (lifts).
1.9 START ENGINE CORRECTLY
The operator must sit on cab seat to start engine. Not allow
starting engine with the operator standing on crawler.
Not allow starting engine with short circuit start-up (including
terminal start-up).

3
1.10 FORBID HITCHING OTHER PEOPLE
When the machine is in operation or traveling,
prohibit other people except operator staying on the
machine.
1.11 KEEP MACHINE AWAY FROM
ELECTRICITY TRANSMISSION LINE
Any part or load of machine touching electricity
transmission line will cause human death or GBH.
Prohibit machine or its load being close to electricity
transmission line, the machine should be 3 meters away
from line.
1.12 MOVE MACHINE SAFELY
Before the machine travels and swings, operator
should know the position of other people.
When machine travels or before it swings, operator
should warn other people by ringing the horn.
Operation at confined area should use signal in
swinging, and harmonize the hand signal before
machine start-up.
Before operating the machine traveling, confirm that
the operation of traveling pedal/control lever is
corresponding with the traveling direction.
Treadle the foreside of traveling pedal or push
traveling lever forward, and the machine will travel
along tension wheel. By contraries, the machine will
travel along sprocket wheel.
When machine travel on slope, place bucket as figures
show, keep bucket 200-300mm up the slope ground, if
the machine slides or becomes unstable, set the bucket
down at once.
1.13 PREVENT ACCIDENT WHILE BACKING OR
SWINGING
In order to prevent accident while backing or
swinging, the operator must follow:
Before back or swing the machine, look round and confirm nobody is around.
Ensure that other people stand out of the boom swing range.
Pay attention to that whether other people stay in work range or not. Ring horn or use other
signals to warn before moving the machine.
If the operator’s vision is blocked when the machine backs, a signalman is needed and the
signalman should always be seen.

4
If signalman is needed, he or she should use hand
signal. Only when both signalman and operator
understand the meaning of signal, the operator can
operate the machine traveling and swinging.
Understand all the meanings of flag, mark, and signal,
and determine the person who is in charge of
signaling.
Keep the cleanness of window, mirror, and lamp.
When the visibility is weakened by dust, rain, and fog,
etc, lamplight should be used.
Please read carefully and understand well the
contents of this manual book.
1.14 OPERATE DIGGING WORK SAFELY
Before digging, operator should be aware of the
position of the embedded lines, such as cable, gas
pipe, water supply pipe, and operate the machine
carefully to prevent accident.
All the non-working people should be away from the
working range of machine.
Make sure the ground of working site is hard enough
to support machine.
When the machine works at pithead, the tension
wheel end should be outward pithead, keeping the
traveling orientation vertical with pit cliff. In this way,
the machine can move away easily when the cliff
collapses.
When the machine works in deep spot, you should
prevent the boom bottom and cylinder from colliding
with high objects.
Turn over prevention
When the machine works on slope, the track should
be parked along the slope, retract the bucket as much
as possible, keep the bucket close to ground and
machine to avoid turning over.
When swinging with load, decrease swing speed to
avoid turning over. When work on frozen ground, you should prevent the ascending
temperature from causing the ground to soften, otherwise it will affect the stability of
machine.
During operation, prevent boom or arm from colliding with high objects.
The bucket is only for digging work, do not allow using bucket to work as pneumatic pick or
hydraulic breaker does.

5
1.15 AVOID ACCIDENT BY CONTROL FAILURE
When the machine loses control, if someone tries
to mount on or stop machine, it will cause GBH or
death.
To avoid the machine losing control, pay attention to
the following proceedings:
Place the machine on horizontal ground, try your best
not to stay on slope, and stop machine as following
procedures:
Lower the bucket to the ground.
Run engine at low revs for 3 minutes to cool down
machine.
Stop engine, take out key from key switch.
Switch off pilot control.
If the machine has to stay on slope, use chocks to
block crawler, lower bucket, and plug bucket teeth
into ground.
Fix the machine well to avoid accidental movement.
Park the machine away from other machines at proper
distance.
1.16 PARK MACHINE SAFELY
Stop machine as following schedule:
Place machine on horizontal ground.
Lower the bucket to the ground.
Run engine at low rev for 3 minutes.
Place the timing handle at stop position, screw the
ignition key to “OFF” position.
Switch off pilot control.
Close window, top window, and cabin.
1.17 SAFE MAINTENANCE
Attention of maintenance:
Before working, be aware of maintenance rules.
Keep the working area clean and dry.
Don’t allow injecting lubricant or maintaining to the moving machine.
Avoid body and clothing touching with transmission parts.
Preparation for maintenance
Place the machine on horizontal ground.
Lower the bucket to the ground.
Run engine at low rev for 5 minutes.
Pull stop handle forward, stop engine, take out key from the switch.
Hang “DO NOT OPERATE” label at control lever.
Switch off pilot control.

6
Safety in maintenance
If maintenance must be made during engine operation,
there must be somebody in cabin.
If the machine must be lifted, then the angle between
boom and arm must be kept between 90-110° to support
the lifted parts stably in maintenance work.
Never work under the machine being lifted by boom.
Check some parts at regular intervals, repair or replace,
if necessary. (refer to chapter “maintenance” in this
manual)
Make sure all parts are in good condition and fitted
correctly. Replace worn or damaged parts. Clean any
accumulative lubricant or scraps.
When adjust electric system or weld on machine,
disconnect earthing cable (negative pole) of battery.
1.18 SUPPORT MACHINE CORRECTLY
Prohibit repairing or maintaining machine before the
machine is well supported.
Before maintenance, lower the working device to the
ground.
If the machine or work device have to be lifted for
maintenance purpose, the machine or work device
should be well supported.
Don’t support the machine on slag, hollow brick, or
other fragile objects.
Don’t work under machine when it is only supported
by a jack.
1.19 CLEAN TRASH ON THE MACHINE
Keep the engine, radiator, battery, hydraulic line, fuel
tank, and cabin clean.
After stopping engine, the surrounding temperature
may rise immediately. Open overhaul gate to cool
engine as soon as possible and clean engine
apartment.
Clean machine at regular interval, eliminate
accumulative lubricant and other trash. Make sure not to spray water or vapour into cabin.
1.20 PREVENT BATTERY FROM EXPLODING
Prohibit fire or flame being close to the battery top, otherwise the battery gas will explode.
Check the electricity deposit with voltage meter or gravimeter. Don’t place metal bestriding
connection rod to check electricity deposit.
Never electricize the frozen battery, otherwise it will explode. The battery should be warmed
up to 16°C (60°F).

7
1.21 STORE PARTS SAFELY
The stored parts, such as bucket, hydraulic breaker, etc, are likely to fall down, causing GBH
or death.
By all effective means, store parts and machine safely to avoid falling down. Don’t permit
unauthorized people, especially children being
closed to the parts storage area.
1.22 PREVENT SPLASHING OBJECTS
Prevent splashing metal or grits hurt, wear blinkers
or safety glass.
Before knocking on object, check whether somebody
else is in the working area or not, and stop other
people from entering the working area to avoid hurt.
1.23 PREVENT PARTS FROM FLYING OFF
In operation or maintenance, take care of the parts
that may fly off, avoid possible flying off parts to human
body and face.
1.24 KEEP AWAY FROM TRANSMISSION PARTS
Touching transmission parts may cause GBH.
When work around the transmission parts, in order to
avoid accident, prevent hand, foot, hair and clothes
from entangling in the machine.
1.25 AVOID INHALING ASBESTOS DUST
Prevent inhaling possible asbestos dust, for the
asbestos fibre may cause lung cancer.
Some washers contain asbestos fibre, in these
components, normally, the asbestos is in the resin or
enveloped in some way. If the asbestos-contained
parts don’t bring dust, there isn’t danger in normal
disposal.
To avoid causing dust, don’t clean with compressed
air, and avoid brushing and grinding
asbestos-contained materials. In maintenance work, please wear regulated respirator, use
special dust collector to clean asbestos. If you can’t get this dust collector, use little oil or
water to be moistened asbestos-contained material. Comply with working area rules and
concerned asbestos disposal rules, stop other people from entering working area.

8
1.26 BEWARE OF INHALING FOG OR EXHAUST GAS
Inhaling engine exhaust gas will cause disease, so
much as, or death.
If it is necessary to operate machine in the building,
open door and window to ensure well ventilation, or
use long exhaust pipe to discharge smoke.
1.27 BEWARE OF SCALD
During operation, engine oil, gear oil, hydraulic oil
will become hot. Meanwhile, engine, hose, pipeline,
and other parts will also become hot. Beware of
scalding.
Carry out inspection and maintenance after oil and
parts are cooled to prevent scalding. The hydraulic oil
tank and pipeline are high pressured, before
maintenance or replacement, release the pressure to
avoid hot oil erupting.
1.28 BE CAUTIOUS OF PRESSURE LIQUIDS
Effluent liquids in high pressure can penetrate through
skin, causing GBH.
Release pressure before disjoining liquids or other
pipeline to avoid this danger. Operate control lever
many times to release pressure.
Before supercharging, tighten all the connections.
Inspect leakage with cardboard, make sure to protect
your hand and body against touching high pressure
liquids
If accident occurs, see the doctor at once.
Any liquid penetrated in skin must be cleaned within a
few hours. Otherwise it will cause necrosis.
1.29 AVOID HEATING UP NEAR PRESSURE OIL
PIPE
If heating up near pressure oil pipe, the inflammable
spray will cause severe burn to the nearby people. Don’t carry out welding, gas protection
welding, or gas cutting near pressured oil pipe or other flammable goods.
If it is a must to carry out welding, gas protection welding, or gas cutting near pressure oil
pipe, mount temporary fireproof jacket to protect hose or other materials.
1.30 AVOID HEATING UP INFLAMMABLE LIQUID PIPE
Not permit welding inflammable liquid steel pipe or hose. Before welding this kind of pipe
or hose, clean this pipe or hose completely with incombustible solvent.

9
1.31 REMOVE PAINT BEFORE WELDING OR
HEATING
Prevent bringing potential poisonous gas and dust.
When paint is heated up by welding or by other
methods, it will cause poisonous gas.
Remove paint as following methods before welding
or heating up.
Rub out paint with abrasive paper or wheel, during
this work, remember to wear regulated respirator to avoid
inhaling dust.
Rub out paint with solvent or paint remover. After
rubbing out, clean paint remover with soap and water
before welding. Before welding or heating up, volatilize
the paint remover gas at least 15 minutes.
The paint removing work should be operated outdoor
or at well ventilation sites.
1.32 DISPOSE OF LIQUID SAFELY
All fuels, the majority of lubricants, and some
coolants are inflammable. These inflammable liquids
should be stored away from fire, do not permit
stabbing or setting storage case on fire.
Dispose of fuel carefully, stop engine before adding
fuel, prohibit smoking while adding fuel or using
flame near the machine being added fuel. Add fuel at
outdoor site.
Don’t put oil-containing rags on machine to ensure machine is clean.
1.33 DISPOSE OF CHEMICAL SAFELY
Touching deleterious chemical directly will cause serious injury to human body. The
chemical used in excavator, such as lubricant, coolant, dope, and adhesive, may be deleterious.
Before using deleterious chemical, you should check and understand its danger, know how
to operate safely, and use recommended implement to work.
1.34 AVOID FIRE
In order to avoid fire, following methods are necessary.
Check leakage, the leakage of fuel, hydraulic oil and lubricant may cause fire.
Inspect clamps whether lost, damaged or loosened or not, hose twisted or not, attrition
between hose and hard pipe or not, oil cooler damaged or not, and oil cooler connection loosened
or not. Use a piece of cardboard to check leakage, never check leakage with nude hand to
prevent pressured oil from shooting up causing injury.
Tighten, repair, or replace any clamps, pipe, hose, oil cooler, and flange bolt of oil cooler.
Don’t twist or knock on high-pressured pipe.
Don’t assemble twisted or damaged pipeline or hose.
Inspect short circuit. The short circuit of electric system can cause fire.

10
Before every shift or 8-hour operation, check loosened, twisted, hardened, or cracked cable
and wire.
Before every shift or 8-hour operation, check lost or damaged connectors.
Before operation, tighten, repair, or replace any loosened or damaged cable, wire and
connector. If the cable or wire is loosened or twisted, don’t operate the machine.
Repair switch
Before everyday operation, check the function of key switch and engine emergency stop
switch. If there is any unusuality, repair at once. In
case of fire, if you can’t stop engine, it will aggravate
firepower, and may cause GBH.
Clean out inflammable materials
Spilled fuel, stored breeze, and other inflammable
materials may cause fire. Keep the machine clean
every day to prevent fire.
1.35 EMERGENCY EXIT
Emergency exit mark is shown in right figure：
When there is an emergency and the operator can not get out of the cabin, take the small hammer
hung on the wall in cabin to break the window with emergency exit mark to leave the machine.
The cabin safety structure can not be repaired after damage but it can be replaced with other
qualified safety protective structures.
1.36 Noise and vibration
The emission sound pressure level at the operator's and the sound power level of machine are
measured according to ISO 6396:2008 considering the method of ISO 3744:2009 under the
operation condition required in EU Directive 2000/14/EC and 2005/88/EC, the test results as
below:
The A-weighted emission sound pressure level at the operator's position is:
LpA= 80 dB, which is less than 80 dB required in EN 474-1:2006+A1:2009.
The sound power level of the machine is：LWA= 93 dB, which complied with the limit of
2000/14/EC and 2005/88/EC
1. Pay attention not to be hurt by the splashing objects while
breaking the window with a certain distance to the breaking hole
for safety.
2. The breaking hole should be big enough for operator to get out
(according to operator’s own condition) and the hole should have
no sharp spines for safety.

11
Note:
it is suggest to wear ear shields for long time operation.
The exposure to the vibrations can be considerably reduced observing the following
recommendations:
-- the correct equipment for the machine and for the work to do;
--select the suitable seat, which can reduce the vibration to the operator sufficiently. (remark: the
seat provided in the machine has complied with spectral class EM 6 of EN ISO 7096:2008);
-- Adjust and set the operator seat in the correct position;
-- check regularly the operator seat’s adjusting and do not forget its properly maintenance;
-- Operate correctly with the machine equipment using it uniformly and avoid, as much as
possible, abrupt movement and excessive shakes;
-- Adjust the speed and choose the best journey during the machine travelling, avoid as much as
possible uneven journey or the impact with possible obstacles so to minimize the vibrations level
The following result is measured for sitting operator in accordance with EN 12096:1997 under
the normal operation condition, refer to ISO/TR25398.
The mean square weighted value of the acceleration to whom the upper limbs of the operator
is subjected, which is less than 0.5 m/s2;
The mean square weighted value of the acceleration to whom the body of the operator is
subjected, is less than 0.5 m/s2
1.37 OTHER SAFETY MARKS
.
warning：Please do not get near to the machine when it is being operated.
Warning：Please do not get near to the machine when machine working equipment is being
operated.
Warning：Please do not stop engine before opening engine hood.

12
Warning：Please stay away from the loader arm clearance area.
Warning：Please near away from the rotating area.
Warning：Pay attention to machine’s lifting capacity in operation.
The lifting capacity is based on the criteria of the machine being level on
a firm supporting ground. When the machine is operated in conditions that deviate from these
criteria (e.g. on soft or uneven ground, on a slope or when subject to slide loads), these
conditions shall be taken into account by the operator and need contract manufacture for safety
operation.

13
2. MACHINE FAMILIARIZATION
Name of excavators
Model Development
code No.
Swing Crawler
allocation
Cabin
allocation
Weight（Kg）
SWE20F 722
With
swing
Rubber
crawler
Closed cab 1940
With
swing
Rubber
crawler
Open cab 1840
Note: The above weight figures are measured with the following five requirements: 1. Diesel oil
tank is full (diesel oil instrument displays full); 2. Hydraulic oil is enough ; 3. Water tank
antifreeze fluid is enough; 4. Sealing plate is assembled; 5. Driver’s weight is not included

14
2.1 POSITION OF THE VARIOUS MACHINE COMPONENTS
1. Cabin
2. Seat
3. Rear hood
4. Middle hood
5. Cab operation platform
6. Traveling motor
7. Support wheel
8. Carrier board
9. Rubber crawler
10. Guide wheel
11. Dozer blade
12. Dozer cylinder
13. Bucket
14. Link rod
15. Swing arm
16. Bucket cylinder
17. Arm
18. Arm cylinder
19. Boom
21. Boom cylinder
22. Swing head
FIG. 2-1

18
2.2 CABIN
1Monitor
2Heating/defrost alternation switch
3Right operating handle
4Bulldozer control rod
5Cigar lightener
6Engine accelerograph speed control
7Starting switch
8Wane control switch
9Left operating handle
10 Pilot safety rod
11 Assisting control pedal
12 Right-traveling control rod
13 Arm swing control pedal
SIMPLE CABIN
1Monitor
2Heating/defrost alternation switch
3Right operating handle
4Bulldozer control rod
5Engine accelerograph speed
6control
7Starting switch
8Wane control switch
9Left operating handle
10 Pilot safety rod
11 Assisting control pedal
12 Right-traveling control rod
13 Arm swing control pedal
FIG. 2-3
FIG 2-2