NUMBER: 05-60-15R
DATE: 07/27/15
REVISED: 06/13/16
| APPLICABILITY: | 2006-2009MY Legacy Spec B and 3.0R Limited Models with Bilstein Front Struts |
| SUBJECT: | Rattling Sound from Front Suspension While Driving Inspection Method for Loose Strut Retaining Nut |
INTRODUCTION
This bulletin provides an inspection method for the threaded portion of the front strut piston rod. If you receive a customer concern of a rattling sound in the front of the vehicle while driving and inspection results of the related suspension components are inconclusive, the strut retaining top nut torque should be checked using the following procedure.
SERVICE PROCEDURE / INFORMATION
Use the special tool as shown to remove and tighten the locking nut; a 17mm Strut Lock Nut Wrench, p.n. 20099PA000 (SOA Essential Tool).
IMPORTANT NOTE: When using an extension which increases the overall โlengthโ of the torque wrench, the torque values applied will change. Refer to the illustration and calculation formula provided on the last page of this bulletin for determining the revised torque specification when using an extension like a Crowโs Foot wrench shown in the example photo above.
- Check the torque of the top retaining nut.
- If the nut torque exceeds 25Nm (18.4 ft. lbs.), torque the nut to 70 Nm (51.6 ft/lbs.) and proceed to Step #2.
- Using the special tool shown above, if the nut torque is less than 25Nm (18.4 ft. lbs.), either the strut piston dust sleeve is out of position and being pinched or, there may be a crack in the threaded portion at the top of the strut piston. Proceed to Step #3.
- Remove the front wheel assembly then try to rotate the dust sleeve around the strut piston.
- If the dust sleeve does not turn easily, the strut assembly will need to be disassembled for closer inspection.
- If you are able to turn it easily, the procedure is complete. Further inspection to determine the source of the sound is necessary.
- Once the strut has been disassembled, the area indicated in the photo above will need to be inspected closely for cracking.
The photo below shows a Magnaflux Spotcheck SK-416 Penetrant Inspection Kit, which can be purchased from industrial equipment suppliers such as MX Industrial, (215) 322-8909 for $99.00 (plus shipping), or online at: www.mxindustrial.com.
Magnaflux Spotcheck SK-416 Penetrant Inspection Kit
PENETRANT CHECKING PROCEDURE:
(3-1) Clean the area to be inspected thoroughly of any dirt or grease with the cleaner.
(3-2) Apply penetrant evenly to the inspection area then allow to dwell (penetrate) for about 10 minutes.
(3-3) Remove any excess penetrant with a clean shop cloth sprayed with cleaner. DO NOT spray cleaner directly on the part. Otherwise, any defect the process is trying to show may be rinsed clean. (NOTE: some penetrant will remain in the threads.)
(3-4) Apply the developer evenly to the threaded area and allow it to dry. The bolt will appear like it is coated with white powder as shown in the photo on the right.
(3-5) Check the developer for penetrant seepage. The strut in the photo below requires replacement.
The base of the threads as shown below is the focal point of the penetrant inspection. After applying the developer, watch carefully for a red line to appear indicating the presence of a crack. If a crack is present, the penetrant indication will eventually widen and blur as it appears in the photo.
(3-6) If the penetrant inspection reveals no cracking, wash away any remaining penetrant materials thoroughly with the cleaner and wipe dry with a clean shop cloth. If a crack is found, replace the strut.
- Reassemble the strut assembly following the procedure in the applicable Service
Manual. NOTE: be sure to use a NEW self-locking top nut, part number 902350027 and torque it to 70 Nm (51.6 ft. lbs.).
IMPORTANT: To insure proper tightening torque of the nut and tension on top portion of the strut assembly are achieved, the special strut mount socket tool, part number 20099PA000 and a 6mm hex key wrench to hold the strut piston firmly must be used as shown on pg. 1.
- Road test the vehicle to verify any change to (or elimination of) the original condition. If the sound is gone, the repair is complete. If the sound persists, further inspection to determine the source will be necessary.
WARRANTY / CLAIM INFORMATION
For vehicles within the Basic New Car Limited Warranty period or with an active Added Security Classic or Gold Service Agreement, this repair may be claimed using the following information:
| LABOR DESCRIPTION | LABOR OPERATION # | FAIL CODE | LABOR TIME |
|---|---|---|---|
| FRONT STRUT OVERHAUL- ONE | B611-201 | NBZ48 | 2.0 |
| FRONT STRUT OVERHAUL- BOTH | B611-204 | 2.4 |
NOTE: Labor times provided include penetrant inspection and 4-wheel alignment.
Revised Torque Specification Calculation Formula:
REMINDER: SOA strongly discourages the printing and/or local storage of service information as previously released information and electronic publications may be updated at any time.
Always refer to STIS for the latest service information before performing any repairs.
- PRECISE & HIGH QUALITY - Manufactured in Taiwan, our torque wrench is engineered for superior precision. It ships pre-calibrated to +/- 4% accuracy, ensuring dependable results every time. Includes a calibration certificate with a trackable serial number for your assurance.
- DURABLE - Built to last, featuring a reinforced ratchet gear head made from hardened, heat-treated Chrome Vanadium alloy steel for maximum strength and durability.
- LONGEVITY - Protect your investment with our proprietary Electro-Black finish, providing advanced rust and corrosion resistance for extended tool life.
- PERFORMANCE - Easily read and set torque levels with our patent-pending dual-range scale. The high-contrast, yellow-on-black markings are designed for easy visibility, even in low-light conditions.
- OMFORT - Equipped with a reversible ratchet head that drives in both directions and measures torque in a clockwise direction. The ergonomic, knurled handle ensures a non-slip, comfortable grip, reducing hand fatigue.
- Durable Ratchet Head: Made from Hardened treated Chrome Vanadium steel alloy (Cr-V) Corrosion-Retardant: Satin Finish. Made in Taiwan
- Easy Storage: A sturdy plastic storage case is included. Non-Slip Grip: Knurled handle
- Easy to Read: High Contrast & Dual Range Scale. Accurate: Pre-Calibrated to ยฑ 4%
- Accessories included: 1/2" Drive 5" long Extension Bar
- Simple and Reliable: โClickโ sound tells the preset torque value is reached. Stop applying force when you hear and feel it.
- ใ9-in-1 Torque SolutionใComplete set includes 1/4", 3/8", and 1/2" drive click torque wrenches plus 6 essential adapters (extension bars, universal joint, drive adapters) securely stored in a sturdy portable case.
- ใHigh Precision & Dual ScalesใFactory-calibrated to ยฑ3% accuracy with included certificate; features dual-range scales (1/4": 10-220 in.lb, 3/8": 5-45 ft.lb, 1/2": 10-170 ft.lb) for versatile application coverage.
- ใClear & Safe Audible ClickใUpgraded loud "Click" sound provides a distinct, reliable signal (strong over 5 N.m, subtle under) when preset torque is reached, preventing overtightening and ensuring safety.
- ใSmooth 72-Tooth Ratchet & Quick ReleaseใReversible 72-tooth ratchet head offers a low 5ยฐ arc swing for use in tight spaces and smooth operation in both directions. Quick-release button ensures secure socket changes.
- ใDurable Construction & Wide UseใHardened Cr-V steel ratchet heads and phosphated adapters resist wear; aerospace aluminum handles ensure lightweight strength and corrosion resistance. Ideal for precise torque on bikes, motorcycles, cars, trucks, wheels, and industrial applications. Backed by 24-month support.
- PRECISION - Ships pre-calibrated to +/- 4% accuracy and ready to use. Include calibration certificate with traceable serial number.
- DURABLE - Reinforced ratchet gear head constructed from hardened, heat treated Chrome Vanadium alloy steel.
- LONG-LASTING - Rust & corrosion protection with our unique and newly invented Electro-Black finish treatment.
- PERFORMANCE - Features an easy-to-read, highlighted yellow print dual-range scale. Identify the markings even in low-light conditions.
- COMFORTABLE - Comes with a reversible ratchet head that drives in both directions and measure torque in a clockwise direction.
- 3/8 inch drive torque wrench with 15-80 ft.-lb./20.4-108.5 Nm range; reminder: to prevent the ratchet from breaking, please do not overload the torque wrench
- Durable ratchet head made from hardened treated Chrome Vanadium steel alloy (Cr-V); bright, full polish chrome finish wipes easily clean and resists rust and corrosion
- High contrast and dual range scale pre-calibrated to ยฑ 4%; tips: for precise scale adjustment, please use the imperial scale; the conversion formula between imperial scale and metric scale is 1 Nm = 8.86 in-lbs
- Includes sturdy plastic case for storage and portability
- NOTE: unlock before adjusting the torque value, lock after adjusting for stability of working torque; when finished, loosen locking ring and adjust to the lowest value for next use
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