Mitsubishi S3Q2

12-1
ELECTRICAL SYSTEM
1. Removing electrical system ..........12-2
1.1 Removing starter.................................... 12-2
1.2 Inspection before removing alternator ... 12-2
1.2.1 Inspecting alternator operation.................12-2
1.2.2 Handling precaution .................................12-2
1.2.3 Inspecting regulated voltage ....................12-3
1.2.4 Inspecting output......................................12-3
1.3 Removing alternator............................... 12-4
1.4 Removing glow plug............................... 12-5
2. Disassembling, inspecting and
reassembling electrical system .....12-6
2.1 Inspection before disassembling starter 12-6
2.1.1 Inspecting magnetic switch ......................12-6
2.1.2 No load test..............................................12-7
2.2 Disassembling and inspecting starter .... 12-8
2.3 Inspecting and repairing starter ............. 12-9
2.3.1 Inspecting brushes for wear.....................12-9
2.3.2 Measuring brush spring load....................12-9
2.3.3 Inspecting armature coil...........................12-9
2.3.4 Measuring commutator radial runout .....12-10
2.3.5 Measuring commutator outside diameter12-10
2.3.6 Measuring commutator outside diameter12-10
2.3.7 Inspecting brush holder for insulation ....12-10
2.3.8 Measuring undercut depth .....................12-10
2.3.9 Inspecting overrunning clutch ................12-11
2.3.10 Inspecting continuity of magnetic switch
(between M terminal and case)..............12-11
2.3.11 Inspecting insulation of magnetic switch
(between M terminal and B terminal) .....12-11
2.3.12 Inspecting continuity of yoke assembly..12-11
2.3.13 Inspecting insulation between yoke body and
brush ......................................................12-11
2.4 Reassembling starter........................... 12-12
2.4.1 Applying grease .....................................12-12
2.5 Inspecting and adjusting after
reassembling........................................ 12-13
2.5.1 Inspecting pinion clearance....................12-13
2.5.2 No load test............................................12-13
2.6 Disassembling, inspecting and reassembling
alternator.............................................. 12-14
2.6.1 Separating front bracket from stator.......12-15
2.6.2 Removing pulley....................................12-15
2.6.3 Removing stator.....................................12-15
2.6.4 Inspecting rectifier..................................12-16
2.6.5 Inspecting rotor ......................................12-16
2.6.6 Inspecting stator.....................................12-17
2.6.7 Inspecting brushes for wear...................12-17
2.6.8 Replacing brushes .................................12-18
2.6.9 Reassembling alternator........................ 12-18
2.7 Inspecting glow plug.............................12-19
3. Installing electrical system.......... 12-20