Toyota Tundra. Manual — part 2347

Standard resistance

COMMUTATOR FOR SHORT CIRCUIT

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

Fig. 22: Inspecting Commutator For Short Circuit
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

c

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

Tester Connection

Condition Specified Condition

Commutator - Armature core Always

10 kohms or higher

2009 Toyota Tundra

2009 ENG NE Starting (2UZ-FE) - Tundra

Fig. 23: Inspecting Commutator Circle Runout
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

d

Using a vernier caliper, measure the commutator diameter

Standard diameter:

30.0 mm (1.18 in.)

Minimum diameter:

29.0 mm (1.14 in.)

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

Fig. 24: Measuring Commutator Diameter
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

2009 Toyota Tundra

2009 ENG NE Starting (2UZ-FE) - Tundra

e

Measure the undercut depth of the commutator

Standard undercut depth:

0.6 mm (0.0236 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. 25: Measuring Undercut Depth Of Commutator
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

3

INSPECT STARTER YOKE ASSEMBLY

a

Inspect for an open circuit

1

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

Standard resistance

STARTER YOKE (OPEN CIRCUIT)

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

Tester Connection

Condition Specified Condition

Terminal C wire - Brushes Always

Below 1 ohms

2009 Toyota Tundra

2009 ENG NE Starting (2UZ-FE) - Tundra

Fig. 26: Inspecting Open Circuit
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

b

Inspect for a short circuit

1

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

Standard resistance

STARTER YOKE (SHORT CIRCUIT)

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

Fig. 27: Inspecting For Short Circuit
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

4

INSPECT BRUSH

a

Using a vernier caliper, measure the brush length

Standard length:

15.5 mm (0.610 in.)

Minimum length:

8.5 mm (0.335 in.)

Tester Connection

Condition Specified Condition

Brushes - Starter yoke body Always

10 kohms or higher

2009 Toyota Tundra

2009 ENG NE Starting (2UZ-FE) - Tundra