Service Bulletin

Service Bulletin
14-039
November 11, 2014
BTB 00256 (1411)
Steering Vibration/Moan While Turning at Idle or Low Speeds
AFFECTED VEHICLES
Year
Model
2010−13 MDX
Trim
ALL
VIN Range
ALL
SYMPTOM
The vehicle’s body and steering wheel vibrates while it’s at idle or very low speed when turning the steering wheel..
POSSIBLE CAUSES
The high pressure demand from the steering gearbox on the power steering pump causes a vibration in the accessory
drive belt system.
CORRECTIVE ACTION
Replace the alternator pulley.
PARTS INFORMATION
Part Name
Part Number
Quantity
Decoupler Alternator Pulley
31141-RV0-A01
1
Decoupler Alternator Cap
31142-RV0-A01
1
Tool Name
Tool Number
Quantity
Alternator OAD Pulley Holder
07AAB-TK8A100
1
TOOL INFORMATION
WARRANTY CLAIM INFORMATION
The normal warranty applies.
Operation Number
Description
Flat Rate Time
Template ID
Failed Part Number
1181A8
Replace the alternator pulley.
0.6 hr
14-039N
31141-RV0-A01
Defect Code:
00401
Symptom Code: 05501
Skill Level:
Repair Technician
CLIENT INFORMATION: The information in this bulletin is intended for use only by skilled technicians who have the proper tools, equipment, and
training to correctly and safely maintain your vehicle. These procedures should not be attempted by “do-it-yourselfers,” and you should not assume
this bulletin applies to your vehicle, or that your vehicle has the condition described. To determine whether this information applies, contact an
authorized Acura automobile dealer.
© 2014 American Honda Motor Co., Inc. – All Rights Reserved
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REPAIR PROCEDURE
1. Remove the engine cover.
2. Remove the drive belt.
3. Remove the A/C suction line from the brackets.
4. Remove the coolant reservoir, then remove the power steering fluid reservoir from the bracket.
5. Remove the pulley locknut with a 22 mm wrench and a 10 mm wrench, then remove the alternator pulley.
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6. Install the new decoupler alternator pulley by threading it onto the alternator shaft. Then insert the alternator OAD
pulley holder into the decoupler pulley.
NOTE: The new decoupler alternator pulley is threaded internally; the nut will no longer be used.
7. Hold the alternator OAD pulley holder with a 17 mm wrench. Place a 10 mm deep socket wrench through the center
of the alternator OAD pulley holder onto the hex on the end of the alternator shaft, then torque the alternator shaft
counterclockwise to 80 N∙m (59 lb-ft).
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8. Install the new decoupler pulley cap.
NOTE: Make sure the new decoupler pulley cap is installed securely.
9. Install the power steering fluid reservoir to the bracket, then install the coolant reservoir.
10. Install the A/C suction line to the bracket bolt and torque it to 12 N∙m (8.8 lb-ft).
11. Install the drive belt.
12. Install the engine cover.
END
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