Aichi SR18A ISR60 SR18AJ ISR60J SR21A ISR70 SR21AJ ISR70J SERVICE MANUAL SME- 125B – PDF DOWNLOAD
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DESCRIPTION:
Aichi SR18A ISR60 SR18AJ ISR60J SR21A ISR70 SR21AJ ISR70J SERVICE MANUAL SME- 125B – PDF DOWNLOAD
This manual describes correct adjustment and servicing procedures
for Crawler type self- propelled Elevation work platforms:
SR18A/ISR60, SR18AJ/ISR60J, SR21A/ISR70 and SR21AJ/ISR70J
in order to ensure the most effective use of superb performance
and excellent features for your satisfaction.
Read this manual carefully and understand the descriptions correctly
before making any repair or maintenance works.
Always be sure of the following items
when conducting repair or maintenance works.
Use only the spare parts approved by the manufacturer,
particularly for load- supporting and safety- related components.
Do not make any modifications to the machine
without obtaining the manufacturer’s approval.
The design check, the manufacturing check as well as
the practical test should be conducted by the approved agent,
if the modification which would affect the stability, strength or
performance of the machine is made.
Please, note that the numerical values in this manual
may be subject to change due to engineering improvement.
TABLE OF CONTENTS:
Aichi SR18A ISR60 SR18AJ ISR60J SR21A ISR70 SR21AJ ISR70J SERVICE MANUAL SME- 125B – PDF DOWNLOAD
1. General information
SR18A / ISR60 Specifications – 1- 2
SR18AJ / ISR60J Specifications – 1- 3
SR21A / ISR70 Specifications – 1- 4
SR21AJ /ISR70J Specifications – 1- 5
Overall dimensions (SR18A / ISR60) – 1- 6
Overall dimensions (SR18AJ / ISR60J) – 1- 7
Overall dimensions (SR21A / ISR70) – 1- 8
Overall dimensions (SR21AJ / ISR70J) – 1- 9
Work range diagram (SR18A / ISR60) 1- 10
Work range diagram (SR18AJ / ISR60J) 1- 11
Work range diagram (SR21A / ISR70) 1- 12
Work range diagram (SR21AJ / ISR70J) 1- 13
Safety devices 1- 14
2. Mechanical section
Diesel engine – 2- 2
Hydraulic pump and Oil cooler installations 2- 3
Rotation bearing – 2- 4
Boom rotation gearbox 2- 6
Boom 2- 7
1. Structures 2- 7
2. Hydraulic hoses and Electrical cables arrangements 2- 7
3. Inspection procedures – 2- 8
4. Extension / Retraction wire ropes – 2- 9
5. Adjustment of Extension / Retraction wire ropes – 2- 10
6. Tension of Electric cables 2- 12
7. Sectional drawings – 2- 13
Fly- jib – 2- 15
Platform (for SR18A / ISR60 and SR21A / ISR70) – 2- 16
Platform (for SR8AJ / ISR60J and SR21AJ / ISR70J) – 2- 17
3. Hydraulic section
Oil reservoir 3- 2
High- pressure line filter for Boom functions 3- 3
Adaptor filter – 3- 4
Hydraulic pump 3- 6
Emergency pump 3- 7
Main control valve 3- 8
Platform rotation solenoid valve (302- 00153- 00D) – 3- 10
Platform rotation / Fly jib solenoid valve (303- 00152- 00D) – 3- 11
Unit valve – 3- 12
Swivel joint – 3- 13
Boom elevation cylinder 3- 14
Single holding valve (for Boom elevation cylinder) 3- 15
1. Inspection procedures 3- 16
Boom telescope cylinder 3- 17
Double holding valve (for Boom telescope cylinder) – 3- 18
1. Inspection procedures 3- 19
Single pilot check valve (for Boom telescope cylinder) 3- 20
Fly- jib cylinder 3- 21
Double holding valve (for Fly- jib cylinder) – 3- 22
Overload relief valve (for Fly- jib cylinder) 3- 23
Platform leveling system – 3- 24
1. Note on function – 3- 25
2. Inspection procedures – 2- 25
3. Air bleeding procedures – 3- 25
Combination valve (for Platform leveling system) – 3- 26
Lower leveling cylinder (for the machines without Fly jib) – 3- 27
Lower leveling cylinder (for the machines with Fly jib) – 3- 28
Upper leveling cylinder (for the machines without Fly jib) – 3- 29
Double holding valve (for Upper leveling cylinder without Fly- jib) 3- 30
Upper leveling cylinder (for the machines with Fly jib) 3- 31
Double pilot check valve (for Upper leveling cylinder with Fly- jib) 3- 32
Boom rotation motor 3- 33
Platform rotary actuator – 3- 34
1. Function of Rotary actuator 3- 35
2. Platform rotary actuator air bleeding procedures 2- 36
Travel motor 3- 37
Check valve block – 3- 39
4. Electric section
Main CPU box (M2D) Master – 4- 2
1. Input / Output characteristics (for the machine with Duplicated sensors) 4- 3
2. Input / Output characteristics (for the machine without Duplicated sensors) 4- 4
3. Error codes and their countermeasures 4- 5
Main CPU box (M2D) Slave – 4- 7
1. Input / Output characteristics – 4- 8
Upper control box (for the machine with Double travel joystick controllers) – 4- 9
1. Electrical schematic – 4- 10
Upper control box (for the machine with Single travel joystick controller) – 4- 11
1. Electrical schematic – 4- 12
Sub- CPU board (M4A) 4- 13
1. Input / Output characteristics (for the machine with Double travel joystick controllers) 4- 14
2. Input / Output characteristics (for the machine with Single travel joystick controller) 4- 15
Joystick controller for Boom functions – 4- 16
Joystick controller for travel functions (for the machine with Double travel joystick controllers) – 4- 17
Joystick controller for travel functions (for the machine with Single travel joystick controller) – 4- 18
Foot switch – 4- 19
Lower control box – 4- 20
1. Electrical schematic – 4- 21
Main key switch 4- 22
Relays in Lower control box – 4- 23
1. Relay CR1 4- 23
2. Relay CR3, 4, 5, 6, 7 and 10 – 4- 23
Engine control box 4- 24
1. EGR cut controller 4- 25
2. Timer relay – 4- 25
3. EGR cut relay 4- 26
4. Safety relay – 4- 27
5. Charge relay 4- 28
6. Relay CR21 – 4- 29
7. Contactor for Emergency pump 4- 29
Boom length sensors 4- 30
1. Boom length sensor (R/H) – 4- 31
2. Boom length sensor (L/H) 4- 32
Boom angle senor R/H 4- 33
Boom angle senor L/H 4- 34
Boom length limit switches 4- 35
Tilt sensor – 4- 36
Tilt sensor 5 degrees (for the machine with Duplicated sensors) 4- 37
Accelerator motor – 4- 38
Fuel pump for Automatic air Bleeding system 4- 39
Air cleaner clog detect switch 4- 39
Low fuel level detect switch 4- 40
Starter motor 4- 40
Alternator – 4- 41
5. Electric circuit for individual system
Engine start and stop system – 5- 2
Boom elevation system – 5- 3
Boom telescope system – 5- 4
Boom rotation system – 5- 5
Traveling system (for the machine with Double travel joystick controllers) 5- 6
Traveling system (for the machine with Single travel joystick controller) 5- 7
H / V control system – 5- 8
Platform rotation and Fly- jib articulation systems 5- 9
Platform level adjust system 5- 10
Work range limit and Overload sensing systems (for the machine with Duplicated sensors) – 5- 11
Work range limit and Overload sensing systems (for the machine without Duplicated sensors) – 5- 12
Accelerator system 5- 13
Emergency pump system – 5- 14
Horn, Work light and Hydraulic generator systems – 5- 15
Travel remote control system 5- 16
6. Inspection and Adjustment
Inspection of Limited work radius and Limited boom angle 6- 2
SR18A / ISR60 Inspection data sheet – 6- 3
SR18AJ / ISR60J Inspection data sheet – 6- 4
SR21A / ISR70 Inspection data sheet – 6- 5
SR21AJ / ISR70J Inspection data sheet 6- 6
Engine RPM measurement procedures – 6- 7
Relief valve pre- set pressure adjustment procedures – 6- 8
7. Appendix
Hydraulic circuit diagram – 7- 2
Electrical circuit diagram, Platform (for the machine with Single travel joystick controller) – 7- 4
Electrical circuit diagram, Platform (for the machine with Double travel joystick controllers) – 7- 5
Electrical circuit diagram, Turntable 7- 6
Electrical wiring chart, Platform – 7- 8
Electrical wiring chart, Turntable 7- 9
Locations of Hydraulic and Electrical components – 7- 11
Water- proof connectors – 7- 13
Color code of wires 7- 15
Tightening torque standard – 7- 16
8. Inspection manual
Procedures of Daily inspections – 8- 2
Daily inspection check sheet – 8- 4
Procedures of Periodical inspections 8- 5
Procedures of Function tests – 8- 9
Periodical inspection check sheet 8- 10
Function tests check sheet 8- 12
Major alterations and repairs – 8- 12
9. KOMATSU crawler shop manual
Structure and function 9- 1
Disassembly and Assembly – 9- 6
Maintenance standard 9- 14
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