Toyota Tundra. Manual — part 2339

Fig. 56: Inspecting Clutch Pinion Gear Return
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

d

Perform the operation test without load

1

Connect the field coil lead wire to terminal C

Torque: 5.9 N*m (60 kgf*cm, 52 in.*lbf)

Fig. 57: Connecting Field Coil Lead Wire To Terminal C
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

2

Grip the starter in a vise

3

Connect the battery and an ammeter to the starter as shown

4

Check that the starter rotates smoothly and steadily with the clutch pinion gear extended

5

Check that the ammeter reads the specified current

2009 Toyota Tundra

2009 ENGINE Starting (1GR-FE) - Tundra

Standard current: 100 A or less at 11.5 V

If the result is not as specified, replace the starter assembly

2

INSPECT STARTER ARMATURE ASSEMBLY

a

Inspect the commutator for an open circuit

1

Measure the resistance according to the value(s) in the table below

Standard resistance

STARTER ARMATURE ASSEMBLY TESTER CONNECTION SPECIFIED
CONDITION CHART

Fig. 58: Inspecting Commutator For Open Circuit
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

If the result is not as specified, replace the armature assembly

b

Inspect the commutator for a short circuit

1

Measure the resistance according to the value(s) in the table below

Standard resistance

STARTER ARMATURE TESTER CONNECTION SPECIFIED CONDITION
CHART

Tester Connection Condition Specified Condition

Commutator

Always

Below 1 ohms

Tester Connection

Condition Specified Condition

Commutator - Armature Always

10 kohms or higher

2009 Toyota Tundra

2009 ENGINE Starting (1GR-FE) - Tundra

Fig. 59: Inspecting Commutator For Short Circuit
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

If the result is not as specified, replace the armature assembly

c

Check the commutator surface for dirt and burns If the surface is dirty or burnt, correct it with
sandpaper (No 400) or a lathe

d

Inspect the commutator circle runout

1

Place the commutator on V-blocks

2

Using a dial indicator, measure the circle runout

Maximum circle runout: 0.05 mm (0.00197 in.)

If the runout is greater than the maximum, correct it with sandpaper (#400) or replace the
armature assembly

Fig. 60: Measuring Circle Runout
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

e

Using a vernier caliper, measure the commutator diameter

Standard diameter: 35.0 mm (1.38 in.)

Minimum diameter: 34.0 mm (1.34 in.)

If the diameter is less than the minimum, replace the armature assembly

2009 Toyota Tundra

2009 ENGINE Starting (1GR-FE) - Tundra

Fig. 61: Measuring Commutator Diameter Using Vernier Caliper
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

f

Measure the undercut depth of the commutator

Standard undercut depth: 0.7 mm (0.0276 in.)

Minimum undercut depth: 0.2 mm (0.00787 in.)

If the undercut depth is less than the minimum, correct it with a hacksaw blade

Fig. 62: Measuring Undercut Depth Of Commutator
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

g

Inspect the bearings

1

Check that the bearing rotates smoothly

3

INSPECT BRUSH

a

Using a vernier caliper, measure the brush length

Standard brush length: 15.0 mm (0.591 in.)

Minimum brush length: 9.0 mm (0.354 in.)

If the length is less than the minimum, replace the brush holder and starter yoke assembly

2009 Toyota Tundra

2009 ENGINE Starting (1GR-FE) - Tundra