5.2.5 Removing step........................................................................................................................7-43
5.2.6 Removing fender ....................................................................................................................7-44
5.2.7 Removing fuel tank .................................................................................................................7-44
5.2.8 Removing fender center stay..................................................................................................7-45
5.2.9 Removing mower linkage and wire harness ...........................................................................7-45
5.2.10 Removing hydraulic cylinder block .......................................................................................7-45
5.3 Hydraulic cylinder and control valve................................................................................................7-46
5.3.1 Removing control valve ..........................................................................................................7-46
5.3.2 Removing control valve lever..................................................................................................7-46
5.3.3 Removing lift arm, hydraulic arm shaft and hydraulic arm...................................................... 7-46
5.3.4 Removing hydraulic piston......................................................................................................7-47
5.3.5 Removing lowering speed adjusting valve..............................................................................7-47
5.4 Mower lift linkage ............................................................................................................................7-48
5.4.1 Disassembling mower linkage ................................................................................................7-48
5.5 Control valve (Front loader) ............................................................................................................7-49
5.5.1 Removing battery....................................................................................................................7-49
5.5.2 Removing ROPS ....................................................................................................................7-49
5.5.3 Removing seat........................................................................................................................7-49
5.5.4 Removing step........................................................................................................................7-49
5.5.5 Removing fender ....................................................................................................................7-50
5.5.6 Removing control valve ..........................................................................................................7-50
5.5.7 Disassembling control valve ...................................................................................................7-51
6. Servicing.................................................................................................................................................7-52
6.1 Hydraulic pump ...............................................................................................................................7-52
6.1.1 Checking clearance between tip of gear tooth and casing ..................................................... 7-52
6.1.2 Checking clearance between bushing and shaft ....................................................................7-52
6.1.3 Checking side plate thickness ................................................................................................7-53
6.2 Hydraulic cylinder............................................................................................................................7-53
6.2.1 Checking hydraulic cylinder bore............................................................................................7-53
6.2.2 Checking hydraulic arm shaft bushing....................................................................................7-53
MECHANISM .....................................................................................................................................................8-1
1. Wiring diagram of BX tractor ....................................................................................................................8-1
2. Electrical connector chart .........................................................................................................................8-2
3. Reading electrical circuit diagrams...........................................................................................................8-3
3.1 How to read wiring diagram ..............................................................................................................8-3
3.2 Layout of connector diagrams...........................................................................................................8-6
3.3 Precautions on handling electrical connectors..................................................................................8-7
4. Starting system.........................................................................................................................................8-8
4.1 Electrical circuit of starting system ....................................................................................................8-8
4.2 Function of relay................................................................................................................................8-9
4.3 Function of starter .............................................................................................................................8-9
4.4 Function of glow plug ......................................................................................................................8-10
4.5 Function of safety switch.................................................................................................................8-10
4.6 Function of fuel pump......................................................................................................................8-10
5. OPC (Operator Presence Control) system ............................................................................................. 8-11
6. Charging system.....................................................................................................................................8-12
6.1 Electrical circuit for charging system...............................................................................................8-12
6.2 Function of IC regulator (3P connector type) ..................................................................................8-13
7. Lighting system.......................................................................................................................................8-14
7.1 Electrical circuit for lighting system .................................................................................................8-14
8. Gauges ...................................................................................................................................................8-15
8.1 Electrical circuit of gauge system....................................................................................................8-15
8.2 Meter panel .....................................................................................................................................8-16
8.2.1 Function of hour meter............................................................................................................8-16
8.2.2 Function of tachometer ...........................................................................................................8-16
BX23S, LA340, BT603, RCK54D, RCK60D, RCK54, RCK60B
xi
KiSC issued 03, 2017 A
