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TABLE OF CONTENTS
1 INTRODUCTION ........................................................................................................................................................................ 3
1.1 General introduction........................................................................................................................................................... 3
1.2 Contact information and disclaimers .................................................................................................................................. 3
1.3 Understanding safety and warning signs ........................................................................................................................... 4
1.4 Safety instructions for maintenance and repair .................................................................................................................. 5
1.5 Identification ....................................................................................................................................................................... 6
2 DESCRIPTION AND WHEELCHAIR LIFT TERMINOLOGY ...................................................................................................... 7
2.1 General .............................................................................................................................................................................. 7
2.2 Safety measures .............................................................................................................................................................. 13
3 IMPORTANCE OF PREVENTATIVE MAINTENANCE ............................................................................................................ 17
3.1 Checklist for preventative maintenance and inspection ................................................................................................... 17
4 TROUBLESHOOTING AND REPAIR ....................................................................................................................................... 22
4.1 Introduction ...................................................................................................................................................................... 22
4.2 General troubleshooting diagram ..................................................................................................................................... 22
4.3 PCB - Functions test ........................................................................................................................................................ 22
4.4 PCB - Positions test ......................................................................................................................................................... 23
5 SPARE PARTS ........................................................................................................................................................................ 23
6 DIAGRAMS .............................................................................................................................................................................. 24
6.1 General ............................................................................................................................................................................ 24
6.2 Hydraulic overview ........................................................................................................................................................... 25
6.3 Wheelchair lift power pack terminology ........................................................................................................................... 26
7 EMERGENCY OPERATION .................................................................................................................................................... 28
8 IMPORTANT PROCEDURES .................................................................................................................................................. 32
8.1 Procedure I-SERV-G-001: manual operation of the SINGLE ACTING valves ................................................................. 32
8.2 Procedure I-SERV-G-002: manual operation of the DOUBLE ACTING valves (2 types) ................................................ 33
8.3 Procedure I-SERV-G-003: hydraulic pressure reading and adjustment........................................................................... 34
8.4 Procedure I-SERV-G-004: flushing of pressure relief valve ............................................................................................. 35
8.5 Procedure I-SERV-G-005: check on valve and solenoid function .................................................................................... 36
8.6 Procedure I-SERV-G-006: Flushing and cleaning of valve cartridge ............................................................................... 37
8.7 Procedure I-SERV-G-007: Testing internal cylinder leaks ............................................................................................... 38
8.8 Procedure I-SERV-G-008: Oil replacement, filling and bleeding ..................................................................................... 39
8.9 Resolving malfunctioning Hand pump ............................................................................................................................. 40
9 DECALS ................................................................................................................................................................................... 42
9.1 Regular decals ................................................................................................................................................................. 42
9.2 Decals on inside of bus near the lift ................................................................................................................................. 43
10 MEANING OF SAFETY AND WARNING SIGNS ..................................................................................................................... 45
11 PRESCRIBED TORQUE VALUES ........................................................................................................................................... 47
12 END NOTE ............................................................................................................................................................................... 48
13 APPENDIX ............................................................................................................................................................................... 49