Service Bulletin

Service Bulletin
14-039
October 16, 2014
BTB 00256 (1410)
Steering Vibration/Moan While Turning at Low Speeds
AFFECTED VEHICLES
Year
Model
2010−13 MDX
Trim
ALL
VIN Range
ALL
SYMPTOM
The steering wheel vibrates or there is a moan from under the hood while turning at slow speeds.
POSSIBLE CAUSES
The increase in steering pump torque causes the belt to slip on the alternator pulley.
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 hour
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. Do the battery terminal disconnection procedure.
2. Remove the engine cover.
3. Remove the drive belt.
4. Remove the A/C suction line from the brackets.
5. Remove the coolant reservoir, then remove the power steering fluid reservoir from the bracket.
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6. Remove the harness holder, then disconnect the A/C compressor clutch connector.
7. Disconnect the alternator connector and the positive alternator cable from the alternator.
8. Remove the mounting bolt and alternator bracket mounting bolt, then remove the alternator.
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9. Clamp the alternator firmly in a vise. Remove the pulley locknut with a 22 mm wrench and a 10 mm wrench, then
remove the alternator pulley.
NOTE: If necessary, use an impact wrench.
10. 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.
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11. 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).
12. Install the new decoupler pulley cap.
NOTE: Make sure the new decoupler pulley cap is installed securely.
13. Install the alternator, then torque the mounting bolt to 44 N∙m (33 lb-ft) and the alternator bracket bolt to
22 N∙m (16 lb-ft).
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14. Connect the alternator connector and the positive alternator cable to the alternator then, torque it to
12 N∙m (8.8 lb-ft). Make sure the crimped side of the ring terminal faces away from the alternator when you
connect it.
15. Install the harness holder and torque the bolt to 12 N∙m (8.8 lb-ft), then connect the A/C compressor clutch
connector.
16. Install the power steering fluid reservoir to the bracket, then install the coolant reservoir.
17. Install the A/C suction line to the bracket bolt and torque it to 12 N∙m (8.8 lb-ft).
18. Install the drive belt.
19. Install the engine cover.
20. Do the battery terminal reconnection procedure.
END
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