2000 LEXUS GS400 Service Repair Manual

ST055±01
ST±16
± STARTING (2JZ±GE)STARTER
1634 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
INSTALLATION
Installation is in the reverse order of removal. (See page ST±4)

B00923
Starter
RelayST056±01
P07170
OhmmeterContinuity
No Continuity1
3
25
Ohmmeter
P07171
Ohmmeter
Continuity1
3
25
Battery
± STARTING (2JZ±GE)STARTER RELAY
ST±17
1635 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
STARTER RELAY
INSPECTION
1. REMOVE RELAY BOX COVER
2. REMOVE STARTER RELAY
3. INSPECT STARTER RELAY
(a) Inspect the relay continuity.
(1) Using an ohmmeter, check that there is continuity
between terminals 1 and 2.
If there is no continuity, replace the relay.
(2) Check that there is no continuity between terminals
3 and 5.
If there is continuity, replace the relay.
(b) Inspect the relay operation.
(1) Apply battery positive voltage across terminals 1
and 2.
(2) Using an ohmmeter, check that there is continuity
between terminals 3 and 5.
If there is no continuity, replace the relay.
4. REINSTALL STARTER RELAY
5. REINSTALL RELAY BOX COVER

ST04Y±01
B02010
Clamp Bracket
Starter
Starter ConnectorStarter Wire
Engine Wire
ST±2
± STARTING (2JZ±GE)STARTER
1620 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
STARTER
COMPONENTS

B01640
Starter Clutch Assembly
Magnetic Switch AssemblyReturn SpringStarter Housing
Idler Gear
Steel Ball

O±Ring
Armature
Front Bearing

Rear Bearing
Field Frame (Field Coil)
Dust Protector

Non±reusable part
Brush Holder

O±Ring
End CoverBearing
B01641

Terminal C Kit Part

Terminal 30 Kit Part

Non±reusable partTerminal Insulator
Wave Washer
Terminal Insulator
O±RingContact Plate
Terminal
Bolt
17 (170, 12)
End Cover
GasketPlunger
Lead
Terminal
O±RingPacking
Terminal Insulator
Wave Washer
17 (170, 12)
Terminal Bolt
Contact Plate
Terminal Insulator
Insulation Paper
N´m (kgf´cm, ft´lbf) : Specified torqueMagnetic Switch Assembly
± STARTING (2JZ±GE)STARTER
ST±3
1621 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)

ST04Z±01
B01960
B01981
Clamp
Bracket
ST±4
± STARTING (2JZ±GE)STARTER
1622 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
REMOVAL
REMOVE STARTER
(a) Remove the rubber cap and nut, and disconnect the start-
er wire.
(b) Disconnect the starter connector.
(c) Remove the 2 bolts and starter.
Torque: 37 N´m (380 kgf´cm, 27 ft´lbf)
HINT:
At time of the installation, place refer to the following item.
When installing the upper bolt, tighten it together with the clamp
bracket.

ST050±01
B02814
B01647
B01959
B01970
(1)
(2)(3)(4)
(5)
ST0948
Magnetic Finger
± STARTING (2JZ±GE)STARTER
ST±5
1623 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
DISASSEMBLY
DISASSEMBLY
1. REMOVE DUST PROTECTOR
2. REMOVE FIELD FRAME AND ARMATURE
(a) Remove the nut, and disconnect the lead wire from the
magnetic switch terminal.
Torque: 5.9 N´m (60 kgf´cm, 52 in.´lbf)
(b) Remove the 2 through bolts.
Torque: 5.9 N´m (60 kgf´cm, 52 in.´lbf)
(c) Pull out the field frame together with the armature.
HINT:
Align the protrusion of the field frame with the groove of the
magnetic switch.
(d) Remove the O±ring from the field frame.
HINT:
At the time of installation, please refer to the following items.
Use a new O±ring.
3. REMOVE STARTER HOUSING, CLUTCH ASSEMBLY
AND GEAR
(a) Remove the 2 bolts.
Torque: 5.9 N´m (60 kgf´cm, 52 in.´lbf)
(b) Remove these parts from the magnetic switch:
(1) Starter housing
(2) Return spring
(3) Idler gear
(4) Bearing
(5) Clutch assembly
4. REMOVE STEEL BALL
Using a magnetic finger, remove the steel ball from the clutch
shaft hole.

B01645
P10568
ST±6
± STARTING (2JZ±GE)STARTER
1624 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
5. REMOVE BRUSH HOLDER
(a) Remove the 2 screws and end cover from the field frame.
Torque: 1.5 N´m (15 kgf´cm, 13 in.´lbf)
(b) Remove the O±ring from the field frame.
HINT:
At the time of installation, please refer to the following items.
Use a new O±ring.
(c) Using a screwdriver, hold the spring back and disconnect
the brush from the brush holder. Disconnect the 4
brushes, and remove the brush holder.
NOTICE:
Check that the positive (+) lead wires are not grounded.
6. REMOVE ARMATURE FROM FIELD FRAME

ST051±01
P10584
Ohmmeter
Continuity
P10585
Ohmmeter
No Continuity
P10586
P10587
ST0040
± STARTING (2JZ±GE)STARTER
ST±7
1625 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
INSPECTION
1. INSPECT ARMATURE COIL
(a) Check the commutator for open circuit.
Using an ohmmeter, check that there is continuity be-
tween the segments of the commutator.
If there is no continuity between any segment, replace the ar-
mature.
(b) Check the commutator for ground.
Using an ohmmeter, check that there is no continuity be-
tween the commutator and armature coil core.
If there is no continuity, replace the armature.
2. INSPECT COMMUTATOR
(a) Check the commutator for the dirty and burnt surfaces.
If the surface is dirty or burnt, correct it with sandpaper (No.400)
or on a table.
(b) Check for the commutator circle runout.
(1) Place the commutator on V±blocks.
(2) Using a dial gauge, measure the circle runout.
Maximum circle runout: 0.05 mm (0.0020 in.)
If the circle runout is greater than maximum, correct it on a lathe.
(c) Using a vernier caliper, measure the commutator diame-
ter.
Standard diameter: 30.0 mm (1.181 in.)
Minimum diameter: 29.0 mm (1.412 in.)
If the diameter is less than minimum, replace the armature.
(d) Check that the undercut depth is clean and free of foreign
materials. Smooth out the edge.
Standard undercut depth: 0.6 mm (0.024 in.)
Minimum undercut depth: 0.2 mm (0.008 in.)
If the undercut depth is less than minimum, correct it with a
hacksaw blade.