Toyota Tundra. Manual — part 2367

If the surface is dirty or burnt, correct it with sandpaper (No 400) or a lathe

d

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 (3UR-FBE) - Tundra

Fig. 34: Measuring Commutator Diameter
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

e

Using a dial indicator, measure the commutator runout

Maximum commutator runout:

2009 Toyota Tundra

2009 ENGINE Starting (3UR-FBE) - Tundra

0.05 mm (0.00197 in.)

If the commutator runout is more than the maximum, correct it using a lathe

Fig. 35: Measuring Commutator Runout
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

2009 Toyota Tundra

2009 ENGINE Starting (3UR-FBE) - Tundra

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. 36: Identifying Undercut Depth Of Commutator
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

3

INSPECT BRUSH

a

Using a vernier caliper, measure the brush length

Standard length:

15.0 mm (0.591 in.)

Minimum length:

9.0 mm (0.354 in.)

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

2009 Toyota Tundra

2009 ENGINE Starting (3UR-FBE) - Tundra