79
4) Troubleshooting
(1) The pinion does not move when the key switch is set to start position.
Trouble Case
Remedy
Wiring
Disconnection, loosened terminals of the battery or switch
Repair and retighten.
Key Switch
Insufficient contact. No current flows.
Repair the contact area or replace
Starting motor
Pinion shaft helical spline is stucked and the pinion does not
move.
Replace or repair
Magnetic switch
Irregular movement of the magnetic switch plunger,
disconnection or short circuit of the coil.
Repair or replace
(2) Pinion is engaged, motor rotates, but the engine does not crank.
Trouble Case
Remedy
Starting motor
Faulty clutch
Damaged reduction gear
Replace
Replace
(3) Pinion is engaged with the ring gear but starting motor does not run.
Trouble Case
Remedy
Wiring
Disconnection or breakage of the wire connecting the battery
and magnetic switch or improper grounding .
Insufficient tightening of wiring connecting the magnetic
switch and motor terminal.
Replace, retighten or correct the
wire
Starting motor
Locked ball bearing
Improper installation of the starting motor
Dirty commutator
Worn out brush, faulty contact of the brush spring
Faulty armature and field coil
Insufficent connection of the field coil and brush
Replace.
Reinstall.
Correct.
Replace
Repair or replace.
Retighten
Magnetic switch
Insufficient contact of the contactor
Rough contact surface of the contactor
Broken holding coil
Replace
Replace
Replace
Battery Discharged
Recharge
(4) The motor rotates at full speed before the pinion engages with the ring gear.
Trouble Case
Remedy
Starting motor
Improper sliding of the pinion shaft
Worn pinion gear end
Improper coming out direction of pinion
Replace
Correct
Replace
Engine
Worn ring gear
Replace
Magnetic switch
Defective switch
Replace
Содержание ST318
Страница 1: ......
Страница 4: ...3 Chapter 1 GENERAL...
Страница 27: ...26...
Страница 28: ...27 Chapter 2 ENGINE Tractor Model Engine Model ST318 S753 ST321 S773 ST324 S773L...
Страница 29: ...28 2 1 Engine Sectional View T100 T101...
Страница 48: ...47 13 Oil flow T140...
Страница 98: ...97 Chapter 3 TRACTOR MAIN BODY...
Страница 115: ...114 3 3 Transmission 1 9 3 MANUAL TRANSMISSION 1 Sectional view z Without Mid PTO T447 z With Mid PTO T447...
Страница 132: ...131 2 HYDROSTATIC TRANSMISSION 1 SPEED PTO MID PTO 1 Sectional view T505 T506...
Страница 154: ...153 Take out the swash plate from the case T566...
Страница 163: ...162 2 Range shift change lever Rear PTO change lever Mid PTO change lever and 4WD change lever T588...
Страница 194: ...193 Model 9 3 shown...
Страница 199: ...198 4 CONTROL VALVE 1 Control valve relief valve 340013400 1 Name of components T658...
Страница 203: ...202 2 Control valve for lifting lowering implement 340016110 1 Name of components T667...
Страница 223: ...221...
Страница 224: ...222...
Страница 225: ...223...
Страница 226: ...224...
Страница 228: ...226 4 LIGHTEING CIRCUIT T702...
Страница 229: ...227 5 HORN CIRCUIT T703...
Страница 230: ...228 6 FUEL LEVEL CIRCUIT T704...
Страница 231: ...229 7 ENGINE STOP SOLENOID CIRCUIT T705...
Страница 232: ...230 8 ENGINE COOLANT TEMPERATURE CIRCUIT ENGINE OIL PRESSURE WARNING CIRCUIT T706...
Страница 233: ...231 9 HST CRUISE CONTROL CIRCUIT T707...
Страница 234: ...232 10 PARKING BRAKE WARNING LIGHT CIRCUIT T708...
Страница 235: ...233 11 BRAKE LAMP CIRCUIT T709...
Страница 236: ...234 12 SAFETY START CIRCUIT T710...
Страница 237: ...235 13 FLASHER AND HAZARD LUMP CIRCUIT T711...
Страница 238: ...236 14 GLOW PLUG AND GLOW LAMP CIRCUIT T712...
Страница 239: ...237 15 ALTERNATOR AND ENGINE STOP SOLENOID CIRCUIT T713...