Aichi SP18A -ISP60 SP21A-ISP70 SP21AJ-ISP70J SERVICE MANUAL SME- 124B – PDF DOWNLOAD
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Aichi SP18A -ISP60 SP21A-ISP70 SP21AJ-ISP70J SERVICE MANUAL SME- 124B – PDF DOWNLOAD
This manual describes correct adjustment and servicing procedures
for Wheel type self- propelled Elevation work platforms:
SP18A/ISP60, SP21A/ISP70 and SP21AJ/ISP70J
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 SP18A -ISP60 SP21A-ISP70 SP21AJ-ISP70J SERVICE MANUAL SME- 124B – PDF DOWNLOAD\
1. General information
SP18A Specifications 1 2
SP21A Specifications 1 3
SP21AJ Specifications 1 4
Overall dimensions (SP18A / ISP60) 1 5
Overall dimensions (SP21A / ISP70) 1 6
Overall dimensions (SP21AJ / ISP70J) 1 7
Work range diagram (SP18A / ISP60) 1 8
Work range diagram (SP21A / ISP70) 1 9
Work range diagram (SP21AJ / ISP70J) 1 10
Safety devices 1 11
2. Mechanical section
Diesel engine 2 2
Hydraulic pump and Oil cooler installations 2 3
Chassis 2 4
Rotation bearing 2 5
Boom rotation gearbox 2 7
Boom 2 8
1. Structures 2 8
2. Hydraulic hoses and Electrical cables arrangements 2 8
3. Inspection procedures 2 9
4. Extension / Retraction wire ropes 2 11
5. Adjustment of Extension / Retraction wire ropes 2 12
6. Tension of Electric cables 2 14
7. Sectional drawings 2 15
Fly jib 2 17
Platform (for SP18A / ISP60 and SP21A / ISP70) 2 18
Platform (for SP21AJ / ISP70J) 2 19
3. Hydraulic section
Oil reservoir 3 2
High pressure line filter for Boom functions 3 3
High pressure line filter for Charge pump 3 4
Adaptor filter 3 5
Hydraulic pump 3 6
Emergency pump 3 8
Main control valve 3 9
Platform rotation solenoid valve (302 00153 00D) 3 11
Platform rotation / Fly jib solenoid valve (303 00152 00D) 3 12
Travel speed select solenoid valve 3 13
Parking brake release solenoid valve 3 14
Oscillation axle release solenoid valve 3 15
Unit valve 3 16
Flow priority valve 3 17
Flow divider valve 3 18
Swivel joint 3 19
Boom elevation cylinder 3 20
Single holding valve (for Boom elevation cylinder) 3 21
1. Inspection procedures 3 22
Boom telescope cylinder 3 23
Double holding valve (for Boom telescope cylinder) 3 24
1. Inspection procedures 3 25
Fly jib cylinder 3 26
Double holding valve (for Fly jib cylinder) 3 27
Overload relief valve (for Fly jib cylinder) 3 28
Oscillation axle lock cylinder 3 29
Lock valve (for Oscillation axle lock cylinder) 3 30
Steering cylinder 3 31
Double pilot check valve (for Steering cylinder) 3 32
Platform leveling system 3 33
1. Note on function 3 34
2. Inspection procedures 2 34
3. Air bleeding procedures 3 34
Combination valve (for Platform leveling system) 3 35
Lower leveling cylinder (for the machines without Fly jib) 3 36
Lower leveling cylinder (for the machines with Fly jib) 3 37
Upper leveling cylinder (for the machines without Fly jib) 3 38
Double holding valve (for Upper leveling cylinder without Fly jib) 3 39
Upper leveling cylinder (for the machines with Fly jib) 3 40
Double pilot check valve (for Upper leveling cylinder with Fly jib) 3 41
Boom rotation motor 3 42
Platform rotary actuator 3 43
1. Function of Rotary actuator 3 44
2. Platform rotary actuator air bleeding procedures 3 45
Travel motor 3 46
Check valve block 3 48
Unloading solenoid valve 3 49
Hydraulic generator solenoid valve 3 50
4. Electric section
Main CPU box (M2A) 4 2
1. Input / Output characteristics (for the machine without Duplicated sensors) 4 3
2. Input / Output characteristics (for the machine with Duplicated sensors) 4 4
3. Error codes and their countermeasures 4 5
Upper control box 4 7
1. Electrical schematic 4 8
Sub CPU board (M4A) 4 9
1. Input / Output characteristics 4 10
Joystick controller 4 11
Foot switch 4 12
Lower control box 4 13
1. Electrical schematic 4 14
Main key switch 4 15
Relays in Lower control box 4 16
1. Relay CR1 4 16
1. Relay CR3, 4, 5, 6, 7 and 10 4 16
Engine control box 4 17
1. EGR cut controller 4 18
2. Timer relay 4 18
3. EGR cut relay 4 19
4. Safety relay 4 20
5. Charge relay 4 21
6. Relay CR 21 4 22
7. Contactor for Emergency pump 4 22
Boom length sensors 4 23
1. Boom length sensor (R/H) 4 24
2. Boom length sensor (L/H) 4 25
Boom angle senor R/H 4 26
Boom angle senor L/H 4 27
Boom length limit switches 4 28
Tilt sensor 4 29
Accelerator motor (for Diesel engine) 4 30
Fuel pump for Automatic air Bleeding system (for Diesel engine) 4 31
Air cleaner clog detect switch 4 31
Low fuel level detect switch 4 32
Starter motor 4 32
Alternator 4 33
Tilt sensor (5 degrees) 4 34
5. Electric circuit for individual system
Engine start and stop system (for Diesel engine) 5 2
Boom elevation system 5 3
Boom telescope system 5 4
Boom rotation system 5 5
Traveling system 5 6
H / V control system 5 7
Steering and Platform level adjust systems 5 8
Platform rotation and Fly jib articulation systems 5 9
Work range limit and Overload sensing systems (for the machine without Duplicated sensors) 5 10
Work range limit and Overload sensing systems (for the machine with Duplicated sensors) 5 11
Accelerator and Oscillation axle release systems 5 12
Emergency pump system 5 13
Horn, Work light and Hydraulic generator systems 5 14
6. Inspection and Adjustment
Inspection of Limited work radius and Limited boom angle 6 2
SP18A / ISP60 Inspection data sheet 6 3
SP21A / ISP70 Inspection data sheet 6 4
SP21AJ / ISP70J Inspection data sheet 6 5
Engine RPM measurement procedures 6 6
Relief valve pre set pressure adjustment procedures 6 7
7. Appendix
Hydraulic circuit diagram 7 2
Electrical circuit diagram, Platform 7 4
Electrical circuit diagram, Turntable 7 5
Electrical wiring chart, Platform 7 7
Electrical wiring chart, Turntable 7 8
Locations of Hydraulic and Electrical components 7 10
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
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