NHTSA ID Number: 10143921
Manufacturer Communication Number: T-SB-0023-18_Rev
TSB/Document Date: 2018-08-20
Summary
TSB: REVISION NOTICE July 2, 2018 Rev1: ? The Introduction, Production Change Information, and Repair Procedure sections have been updated. Any previous printed versions of this bulletin should be discarded. Some 2017 ? 2018 model year Tacoma vehicles with the BD20 differential (non-TRD
) may exhibit a noise or vibration from the rear of the vehicle at low speeds or while braking. This condition may be caused by excessive clearance between the brake drum and axle drum flange. Follow the Repair Procedure in this bulletin to address this condition.
T-SB-0023-18
Rev1
April 18, 2018
Rear Vibration or Noise While Braking
Service
Category
Drivetrain
Section
Drive Shaft/Propeller Shaft
Market USA
Applicability
YEAR(S)
MODEL(S)
2017 - 2018
Tacoma
ADDITIONAL INFORMATION
REVISION NOTICE
July 2, 2018 Rev1:
The Introduction, Production Change Information, and Repair Procedure sections have
been updated.
Any previous printed versions of this bulletin should be discarded.
Introduction
Some 2017 – 2018 model year Tacoma vehicles with the BD20 differential (non-TRD) may exhibit
a noise or vibration from the rear of the vehicle at low speeds or while braking. This condition may
be caused by excessive clearance between the brake drum and axle drum flange. Follow the
Repair Procedure in this bulletin to address this condition.
© 2018 Toyota Motor Sales, USA
Page 1 of 6
T-SB-0023-18
Rev1
April 18, 2018
Page 2 of 6
Rear Vibration or Noise While Braking
Production Change Information
This bulletin applies to vehicles produced BEFORE the Production Change Effective VINs
shown below.
MODEL
PLANT
DRIVETRAIN
PRODUCTION CHANGE EFFECTIVE VIN
5TFRX5GN#JX107297
5TFRZ5CN#JX058047
5TFAZ5CN#JX057112
2WD
5TFBZ5DN#JX003871
5TFEZ5CN#JX058044
TMMTX
5TFAX5GN#JX107948
5TFSX5EN#JX058941
5TFCZ5AN#JX128570
Tacoma
4WD
5TFSZ5AN#JX128576
5TFDZ5BN#JX030714
3TMAZ5CN#JM055663
2WD
3TMBZ5DN#JM012887
3TMEZ5CN#JM055673
TMMBC
3TMCZ5AN#JM130501
4WD
3TMGZ5AN#JM130495
3TMDZ5BN#JM038560
Warranty Information
OP CODE
DESCRIPTION
TIME
TC1801
R & R Axle (One Side)
2.6
Combo A
R & R Axle (Opposite Side)
1.2
OFP
T1
T2
42311-04082
91
50
*Combo A is ONLY applicable if both sides need to be replaced.
APPLICABLE WARRANTY
This repair is covered under the Toyota Powertrain Warranty. This warranty is in effect for
60 months or 60,000 miles, whichever occurs first, from the vehicle’s in-service date.
Warranty application is limited to occurrence of the specified condition described in
this bulletin.
© 2018 Toyota Motor Sales, USA
T-SB-0023-18
Rev1
April 18, 2018
Page 3 of 6
Rear Vibration or Noise While Braking
Parts Information
PART NUMBER
PART NAME
QTY
42311-04082
Shaft, Rear Axle
1
90942-02081
6
90942-02049
6
42450-04010
Hub & Bearing Assy, Rear Axle (RH)
1
42460-04010
Hub & Bearing Assy, Rear Axle (LH)
1
42443-60010
Drum, Oil Deflector Gasket
1
90301-83002
Ring, O Rear, Axle Bearing Case
1
42444-35050
Brake Drum, Gasket
1
42423-60050
Rear Axle Bearing, Inner Retainer
1
90520-41019
Ring, Snap Rear Axle Shaft
1
90310-58003
1
Required Tools & Equipment
SPECIAL SERVICE TOOLS (SST)
PART NUMBER
QTY
Seal Ring Tool*
09631-12090
1
09308-00010
1
Rear Axle Shaft Puller*
09521-25011-01
1
Rear Axle Shaft Puller Adapter*
09521-25021-01 or 09521-60010-01
1
09650-17011
1
Bearing Replacer Set 2*
09950-60020-01
1
Handle Set*
09950-70010-01
1
*Essential SST.
NOTE
Additional SSTs may be ordered by calling 1-800-933-8335.
REQUIRED TOOLS & MATERIAL
QUANTITY
Measuring Caliper
1
Wire Brush
1
© 2018 Toyota Motor Sales, USA
T-SB-0023-18
Rev1
April 18, 2018
Page 4 of 6
Rear Vibration or Noise While Braking
Repair Procedure
1. Confirm the condition exists.
Is a vibration or noise present from the rear of the vehicle at low speeds or while braking?
YES — Continue to step 2.
NO — This bulletin does NOT apply. Continue diagnosis using the applicable
Repair Manual.
2. Inspect the rear drum and brake assembly for ANY signs of defects or wear.
Refer to TIS, applicable model and model year Repair Manual:
2017 / 2018 Tacoma:
Brake – Brake (rear) – “Brake: Rear Brake: Inspection”
Does the rear drum or brake assembly exhibit ANY signs of defect or wear?
YES — This bulletin does NOT apply. Continue diagnosis using the applicable
Repair Manual.
NO — Continue to step 3.
3. Visually inspect the rear axle flange for
corrosion/rust buildup.
Does the vehicle exhibit ANY
corrosion/rust buildup on the rear
axle flange?
YES — Using a wire brush, remove
the corrosion/rust buildup, then
continue to step 4.
NO — Continue to step 4.
Figure 1. Inspection Location
© 2018 Toyota Motor Sales, USA
T-SB-0023-18
Rev1
April 18, 2018
Page 5 of 6
Rear Vibration or Noise While Braking
Repair Procedure (continued)
4. Measure the diameter of the axle flange (location is illustrated in Figure 4).
A. Using a digital or dial caliper, measure the axle flange boss diameter (as shown in
Figure 2).
B. Take measurements in three locations (as shown in Figure 3) around the flange to verify
the diameter.
Figure 2.
Figure 3.
Figure 4. Side View and Location of Axle Flange
5. Is the axle flange boss diameter out of specification?
Specification: 108.000 mm – 107.946 mm (4.252 in. – 4.250 in.)
YES — Continue to step 6.
NO — This bulletin does NOT apply. Continue diagnosis using the applicable
Repair Manual.
© 2018 Toyota Motor Sales, USA
T-SB-0023-18
Rev1
April 18, 2018
Page 6 of 6
Rear Vibration or Noise While Braking
Repair Procedure (continued)
6. Replace the axle.
Refer to TIS, applicable model and model year Repair Manual:
NOTE
During Repair Manual step 5A (“Install rear axle shaft”) of Reassembly, use SST 09631-12090.
Do NOT use SST 09521-25011.
2017 Tacoma:
Drivetrain – Axle – “Axle: Rear Axle Shaft: Removal / Disassembly /
Reassembly / Installation”
2018 Tacoma:
Drivetrain – Axle – “Axle: Rear Axle Shaft: Removal / Disassembly /
Reassembly / Installation”
7. Test drive the vehicle to confirm the noise or vibration is no longer present.
© 2018 Toyota Motor Sales, USA
- Mixes well with conventional fluids
- Low-moisture formula provides excellent vapor lock...
- Ideal for hydraulic and disc brakes
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TSB/Document ID: T-SB-0023-18_Rev
Replacement Service Bulletin Number:
MFR Communication Date: 2018-07-02
MFR Internal Campaign ID/Software Version:
Communication Type: Service Bulletin/Repair Instructions
NHTSA Components: SERVICE BRAKES
MFR Component System:
MFR Component Subsystem:
Previous TSB | Next TSB |
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