CX31B
CX36B
Compact Hydraulic Excavator
CX31B - PIN PW14-46519 - and higher
CX36B - PIN PX15-21105 - and higher
SERVICE MANUAL
Part number S5PW0032E02
English
August 2010
, COMPACT HYDRAULIC EXCAVATOR
MAINTENANCE SPECIFICATIONS
SHOP CX31B
MANUAL model CX36B
INDEX
1 SPECIFICATIONS SECTION
SYSTEM
2 MAINTENANCE SECTION
3 SYSTEM SECTION
4 DISASSEMBLY SECTION
DISASSEMBLING
5 TROUBLESHOOTING
6 ENGINE SECTION
7 PROCEDURE E / G TROUBLESHOOTING
OF INSTALLING
OPTIONS SECTION OPT.
Book Code No.S5PW0032E02
0-1
,GENERAL SAFETY INFORMATION 3) CAUTION- Indicates a potentially hazardous
situation which, if not avoided, may result in mi-
nor or moderate injury. It may also be used to
alert against possible damage to the machine
Do not operate or perform any maintenance on this and its components and is represented as fol-
machine until all instructions found in the OPERA- lows:
TOR’S MANUAL and this MANUAL have been thor-
oughly read and understood.
Improper operation or maintenance of this machine (4) It is very difficult to forecast every danger that may
may cause accidents and could result in serious in- occur during operation. However, safety can be en-
jury or death. sured by fully understanding proper operating pro-
Always keep the manual in storage. cedures for this machine according to methods
If it is missing or damaged, place an order with an recommended by Manufacturer.
authorized our Distributor for a replacement.
(5) While operating the machine, be sure to perform
If you have any questions, please consult an autho-
work with great care, so as not to damage the ma-
rized our Distributor. chine, or allow accidents to occur.
(1) Most accidents, which occur during operation, are (6) Continue studying the manual until all Safety, Oper-
due to neglect of precautionary measures and safe- ation and Maintenance procedures are completely
ty rules. Sufficient care should be taken to avoid understood by all persons working with the ma-
these accidents. Erroneous operation, lubrication chine.
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 man-
ual and on the machine should be read and under-
stood by all personnel before starting any work with
or on the machine.
(2) Operation, inspection, and maintenance should be
carefully carried out, and safety must be given the
first priority. Messages of safety are indicated with
marks. The safety information contained in the
manual is intended only to supplement safety
codes, insurance requirements, local laws, rules
and regulations.
(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".
1) DANGER- Indicates an imminently hazardous
situation which, if not avoided, will result in
death or serious injury and is represented as
follows:
2) WARNING- Indicates a potentially hazardous
situation which, if not avoided, could result in
death or serious injury and is represented as
follows:
0-2
, SAFETY PRECAUTIONS stands, capable of supporting the machine, before
performing any disassembly.
The proper and safe lubrication and maintenance
for this machine, recommended by Manufacturer, Do not operate this machine unless you have
are outlined in the OPERATOR’S MANUAL for the read and understand the instructions in the OP-
machine. ERATOR’S MANUAL. Improper machine opera-
Improper performance of lubrication or mainte- tion is dangerous and could result in injury or
nance procedures are dangerous and could result death.
in injury or death. Read and understand the MAN-
(6) Relieve all pressure in air, oil or water systems be-
UAL before performing any lubrication or mainte-
fore any lines, fittings or related items are discon-
nance.
nected or removed. Always make sure all raised
The serviceman or mechanic may be unfamiliar with components are blocked correctly and be alert for
many of the systems on this machine. This makes it possible pressure when disconnecting any device
important to use caution when performing service work. from a system that utilizes pressure.
A knowledge of the system and or components is im- (7) Lower the bucket, dozer, or other attachments to
portant before the removal or disassembly of any com- the ground before performing any work on the ma-
ponent. chine. If this cannot be done, make sure the bucket,
Because of the size of some of the machine compo- dozer, ripper or other attachment is blocked correct-
nents, the serviceman or mechanic should check the ly to prevent it from dropping unexpectedly.
weights noted in this manual. Use proper lifting proce- (8) Use steps and grab handles when mounting or dis-
dures when removing any components. Weight of com- mounting a machine. Clean any mud or debris from
ponents table is shown in the section ; steps, walkways or work platforms before using.
SPECIFICATIONS. Always face to the machine when using steps, lad-
The following is a list of basic precautions that must al- ders and walkways. When it is not possible to use
ways be observed. the designed access system, provide ladders, scaf-
folds, or work platforms to perform safe repair oper-
(1) Read and understand all Warning plates and decal
ations.
on the machine before Operating, Maintaining or
Repairing this machine. (9) To avoid back injury, use a hoist when lifting com-
ponents which weigh 20kg (45lbs) or more. Make
(2) Always wear protective glasses and protective
sure all chains, hooks, slings, etc., are in good con-
shoes when working around machines. In particu-
dition and are the correct capacity. Be sure hooks
lar, wear protective glasses when using hammers,
are positioned correctly. Lifting eyes are not to be
punches or drifts on any part of the machine or at-
side loaded during a lifting operation.
tachments. Use welders gloves, hood/goggles,
apron and the protective clothing appropriate to the (10)To avoid burns, be alert for hot parts on machines
welding job being performed. Do not wear loose fit- which have just been stopped and hot fluids in
ting or torn clothing. Remove all rings from fingers, lines, tubes and compartments.
loose jewelry, confine long hair and loose clothing (11)Be careful when removing cover plates. Gradually
before working on this machinery. back off the last two capscrews or nuts located at
(3) Disconnect the battery and hang a "Do Not Oper- opposite ends of the cover or device and carefully
ate" tag in the Operators Compartment. Remove ig- pry cover loose to relieve any spring or other pres-
nition keys. sure, before removing the last two capscrews or
nuts completely.
(4) If possible, make all repairs with the machine
parked on a firm level surface. Block the machine (12)Be careful when removing filler caps, breathers and
so it does not roll while working on or under the ma- plugs on the machine. Hold a rag over the cap or
chine. Hang a "Do Not Operate" tag in the Opera- plug to prevent being sprayed or splashed by liq-
tors Compartment. uids under pressure. The danger is even greater if
the machine has just been stopped because fluids
(5) Do not work on any machine that is supported only
can be hot.
by lift, jacks or a hoist. Always use blocks or jack
0-3
CX36B
Compact Hydraulic Excavator
CX31B - PIN PW14-46519 - and higher
CX36B - PIN PX15-21105 - and higher
SERVICE MANUAL
Part number S5PW0032E02
English
August 2010
, COMPACT HYDRAULIC EXCAVATOR
MAINTENANCE SPECIFICATIONS
SHOP CX31B
MANUAL model CX36B
INDEX
1 SPECIFICATIONS SECTION
SYSTEM
2 MAINTENANCE SECTION
3 SYSTEM SECTION
4 DISASSEMBLY SECTION
DISASSEMBLING
5 TROUBLESHOOTING
6 ENGINE SECTION
7 PROCEDURE E / G TROUBLESHOOTING
OF INSTALLING
OPTIONS SECTION OPT.
Book Code No.S5PW0032E02
0-1
,GENERAL SAFETY INFORMATION 3) CAUTION- Indicates a potentially hazardous
situation which, if not avoided, may result in mi-
nor or moderate injury. It may also be used to
alert against possible damage to the machine
Do not operate or perform any maintenance on this and its components and is represented as fol-
machine until all instructions found in the OPERA- lows:
TOR’S MANUAL and this MANUAL have been thor-
oughly read and understood.
Improper operation or maintenance of this machine (4) It is very difficult to forecast every danger that may
may cause accidents and could result in serious in- occur during operation. However, safety can be en-
jury or death. sured by fully understanding proper operating pro-
Always keep the manual in storage. cedures for this machine according to methods
If it is missing or damaged, place an order with an recommended by Manufacturer.
authorized our Distributor for a replacement.
(5) While operating the machine, be sure to perform
If you have any questions, please consult an autho-
work with great care, so as not to damage the ma-
rized our Distributor. chine, or allow accidents to occur.
(1) Most accidents, which occur during operation, are (6) Continue studying the manual until all Safety, Oper-
due to neglect of precautionary measures and safe- ation and Maintenance procedures are completely
ty rules. Sufficient care should be taken to avoid understood by all persons working with the ma-
these accidents. Erroneous operation, lubrication chine.
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 man-
ual and on the machine should be read and under-
stood by all personnel before starting any work with
or on the machine.
(2) Operation, inspection, and maintenance should be
carefully carried out, and safety must be given the
first priority. Messages of safety are indicated with
marks. The safety information contained in the
manual is intended only to supplement safety
codes, insurance requirements, local laws, rules
and regulations.
(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".
1) DANGER- Indicates an imminently hazardous
situation which, if not avoided, will result in
death or serious injury and is represented as
follows:
2) WARNING- Indicates a potentially hazardous
situation which, if not avoided, could result in
death or serious injury and is represented as
follows:
0-2
, SAFETY PRECAUTIONS stands, capable of supporting the machine, before
performing any disassembly.
The proper and safe lubrication and maintenance
for this machine, recommended by Manufacturer, Do not operate this machine unless you have
are outlined in the OPERATOR’S MANUAL for the read and understand the instructions in the OP-
machine. ERATOR’S MANUAL. Improper machine opera-
Improper performance of lubrication or mainte- tion is dangerous and could result in injury or
nance procedures are dangerous and could result death.
in injury or death. Read and understand the MAN-
(6) Relieve all pressure in air, oil or water systems be-
UAL before performing any lubrication or mainte-
fore any lines, fittings or related items are discon-
nance.
nected or removed. Always make sure all raised
The serviceman or mechanic may be unfamiliar with components are blocked correctly and be alert for
many of the systems on this machine. This makes it possible pressure when disconnecting any device
important to use caution when performing service work. from a system that utilizes pressure.
A knowledge of the system and or components is im- (7) Lower the bucket, dozer, or other attachments to
portant before the removal or disassembly of any com- the ground before performing any work on the ma-
ponent. chine. If this cannot be done, make sure the bucket,
Because of the size of some of the machine compo- dozer, ripper or other attachment is blocked correct-
nents, the serviceman or mechanic should check the ly to prevent it from dropping unexpectedly.
weights noted in this manual. Use proper lifting proce- (8) Use steps and grab handles when mounting or dis-
dures when removing any components. Weight of com- mounting a machine. Clean any mud or debris from
ponents table is shown in the section ; steps, walkways or work platforms before using.
SPECIFICATIONS. Always face to the machine when using steps, lad-
The following is a list of basic precautions that must al- ders and walkways. When it is not possible to use
ways be observed. the designed access system, provide ladders, scaf-
folds, or work platforms to perform safe repair oper-
(1) Read and understand all Warning plates and decal
ations.
on the machine before Operating, Maintaining or
Repairing this machine. (9) To avoid back injury, use a hoist when lifting com-
ponents which weigh 20kg (45lbs) or more. Make
(2) Always wear protective glasses and protective
sure all chains, hooks, slings, etc., are in good con-
shoes when working around machines. In particu-
dition and are the correct capacity. Be sure hooks
lar, wear protective glasses when using hammers,
are positioned correctly. Lifting eyes are not to be
punches or drifts on any part of the machine or at-
side loaded during a lifting operation.
tachments. Use welders gloves, hood/goggles,
apron and the protective clothing appropriate to the (10)To avoid burns, be alert for hot parts on machines
welding job being performed. Do not wear loose fit- which have just been stopped and hot fluids in
ting or torn clothing. Remove all rings from fingers, lines, tubes and compartments.
loose jewelry, confine long hair and loose clothing (11)Be careful when removing cover plates. Gradually
before working on this machinery. back off the last two capscrews or nuts located at
(3) Disconnect the battery and hang a "Do Not Oper- opposite ends of the cover or device and carefully
ate" tag in the Operators Compartment. Remove ig- pry cover loose to relieve any spring or other pres-
nition keys. sure, before removing the last two capscrews or
nuts completely.
(4) If possible, make all repairs with the machine
parked on a firm level surface. Block the machine (12)Be careful when removing filler caps, breathers and
so it does not roll while working on or under the ma- plugs on the machine. Hold a rag over the cap or
chine. Hang a "Do Not Operate" tag in the Opera- plug to prevent being sprayed or splashed by liq-
tors Compartment. uids under pressure. The danger is even greater if
the machine has just been stopped because fluids
(5) Do not work on any machine that is supported only
can be hot.
by lift, jacks or a hoist. Always use blocks or jack
0-3
