Lexus SC300 / Lexus SC400. Manual — part 723
STARTING SYSTEM
STARTING SYSTEM
NOTE: The specification descriptions ”USA Spec.” and
”Exc. USA Spec.” used in this section indicate the following
specifications.
USA Spec.: USA (50 States) Specifications
Exc. USA Spec.: USA (except California) and Canadian
Specifications.
ST–1
DESCRIPTION
The starter is a reduction type starter with a small, high–speed motor used to drive the pinion gear. It is
installed in the center of the V–bank of the cylinder block.
ST–2
–
STARTING SYSTEM
Description
SYSTEM CIRCUIT
OPERATION
When the ignition switch is turned to START, current flows from terminal 50 to the coil of the solenoid and
the plunger is pulled by the magnetic force of the coil. When the plunger is pulled to the left as shown above,
the contact plate of the plunger allows current from the battery to flow directly from terminal 30 to the motor, and
the starter rotates.
When the engine is running and the ignition switch is returned to ON, the magnetic force of the coil disappears
and the contact plate of the plunger is returned to its original position by the return spring. Battery voltage no
longer flows from terminal 30, so the motor stops.
–
STARTING SYSTEM
System Circuit, Operation
ST–3
PREPARATION
SST (SPECIAL SERVICE TOOLS)
09201–41020
Valve Stem Oil
Seal Replacer
Armature rear bearing
09286–46011
Injection Pump
Spline Shaft Puller
Armature front bearing
09612–24014
Steering Gear
Housing Overhaul
Tool Set
(09617–24011)
(Steering Rack
Wrench)
Fuel Inlet hose
09950–00020
Bearing Remover
Armature rear bearing
RECOMMENDED TOOLS
09082–00015
TOYOTA
Electrical Tester
EQUIPMENT
Part Name
Note
Dial indicator
Commutator
Vernier caliper
Commutator, Brush
Pull scale
Brush spring
Torque wrench
ST–4
–
STARTING SYSTEM
Preparation
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