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| Classification: | Reference: | Date: |
| FA21-007A | ITB21-017A | August 23, 2021 |
VOLUNTARY SAFETY RECALL CAMPAIGN
2020-2021 Q50 AND Q60; STEERING KNUCKLE INSPECTION
This bulletin has been amended. See AMENDMENT HISTORY on the last page. Discard all previous versions of this bulletin.
| CAMPAIGN ID #: | R21A5 |
| APPLIED VEHICLE: | 2020-2021 Q50 (V37)
2020-2021 Q60 (CV37) |
Check Service COMM or Dealer Business Systems (DBS) National Service History to confirm campaign eligibility.
INTRODUCTION
Infiniti is conducting this voluntary safety recall campaign, on certain specific model year 2020-2021 Q50 and Q60 vehicles to inspect and, if necessary, replace the front steering knuckles. This service will be performed at no charge to the client for parts or labor.
IDENTIFICATION NUMBER
Infiniti has assigned identification number R21A5 to this campaign. This number must appear on all communication and documentation of any nature dealing with this campaign.
RETAILER RESPONSIBILITY
It is the retailer’s responsibility to check Service COMM or Dealer Business Systems (DBS) National Service History for the campaign status on each vehicle falling within the range of this voluntary safety recall which for any reason enters the service department. This includes vehicles purchased from private parties or presented by transient (tourist) owners and vehicles in a retailer’s inventory. Federal law requires that new vehicles in retailer inventory which are the subject of a safety recall must be corrected prior to sale. Failure to do so can result in civil penalties by the National Highway Traffic Safety Administration. While federal law applies only to new vehicles, Infiniti strongly encourages retailers to correct any used vehicles in their inventory before they are retailed.
SERVICE PROCEDURE
WARNING
To avoid the risk of death or severe personal injury, do not reuse single use parts noted in this TSB. Reusing a single use part may induce risk that it, or the component that it secures, may become loose.
HINT: Most figures in this procedure show an AWD vehicle, 2WD is similar.
Remove the Steering Knuckle
- Place the vehicle on a lift and raise to a suitable height.
- Remove both front wheel and tire assemblies.
- Remove the front wheel speed sensor bolt (10 mm) from the steering knuckle (Figure 1).
- Separate the front wheel speed sensor harness grommets from the front wheel speed sensor harness bracket.
- Remove the front wheel speed sensor harness bracket bolt (10 mm) from the steering knuckle (Figure 2).
- Separate the front wheel speed sensor from the steering knuckle.
- Remove the front brake caliper assembly as follows:
a. Remove the front brake hose bracket bolts (12 mm) from the steering knuckle.
b. Place alignment marks on the disc brake rotor and on the wheel hub.
c. Remove the 2 front brake caliper assembly bolts (22 mm).
d. Separate the front brake caliper assembly from the steering knuckle.
e. Remove the front disc brake rotor.
- For 2WD models, skip to step 10 on page 6. For AWD models, continue to step 9 on page 5.
NOTICE
To avoid damage to the drive shaft threads, loosen the wheel hub lock nut until the front face of the nut is even with the face of the drive shaft.
- For AWD models, remove the wheel hub lock nut (32 mm) from the drive shaft as follows:
a. Remove the wheel hub lock nut cotter pin.
- Do not reuse the cotter pin.
b. Loosen, but do not remove the wheel hub lock nut.
c. Using a piece of wood and suitable tool, tap on the wheel hub lock nut to disengage the drive shaft from the wheel hub.
d. Once the drive shaft is disengaged from the wheel hub, remove the wheel hub lock nut.
- For all models, remove the steering knuckle as follows:
a. Remove the cotter pin from the transverse link and steering knuckle.
- Do not reuse the cotter pin.
b. Remove the steering knuckle nut (22 mm) and the transverse link.
c. Remove the steering outer socket cotter pin.
- Do not reuse the cotter pin.
d. Remove the steering outer socket nut (18 mm).
e. Separate the steering outer socket from the steering knuckle using a ball joint remover.
f. Remove the upper link and steering knuckle nut (14 mm).
- Do not reuse the nut.
g. Remove the bolt from the upper link and steering knuckle, and separate the steering knuckle from the upper link.
h. Separate the drive shaft from the wheel hub (AWD models).
i. Remove the steering knuckle from the vehicle.
- Repeat steps 3 – 10 on pages 2 – 8 for the opposite side of the vehicle, and then proceed to step 12 on page 9.
Disassemble the Steering Knuckle
- Place the steering knuckle securely in a vise (Figure 17 [AWD shown, 2WD is similar]).
Confirm the Casting Stamp Date
The following Service Procedure uses an online form that must be filled out while performing the procedure.
- Locate the casting stamp dates on each suspension knuckle, where indicated in Figure 19.
NOTE: Orient the suspension knuckle as shown in Figure 19 (RH side is shown, LH side will be reversed).
- Write down the casting stamp date on the repair order as follows:
a. Write down the upper digit of the casting stamp nearest the tie rod end mounting point. This will be the first digit of the casting stamp date. This is the number “9” of the example below in Figure 19.
- The lower digit of this casting stamp will not be used.
b. Write down a forward slash (“/”).
c. Write down the upper digit followed by the lower digit of the casting stamp furthest from the tie rod end mounting point. This is the number “28” followed by the letter “C” of the example below in Figure 19.
EXAMPLE:
- Open the ASIST form found at ASIST > Tech Support Info > Bulletin Support Items > R21A5 Knuckle Inspection (see Figure 20 and Figure 21).
- Enter the vehicle VIN and both casting stamp dates into the ASIST form, and then select Submit (Figure 22).
NOTE: The forward slash (“/”) is required when entering the casting stamp date, as shown in Figure 22 and Figure 23
- If the ASIST inspection result is OK (Figure 22), print the Knuckle Inspection form and attach it to the work order. Proceed to step 19 on page 13 to reassemble the original suspension knuckles.
- If the ASIST inspection result is NG (Figure 23), print the Knuckle Inspection form and attach it to the work order. Place a parts order in DBS for the part number shown at the bottom of the Knuckle Inspection form, and proceed to step 18 on page 13 to replace the affected suspension knuckle(s).
Replace the Steering Knuckle
- Clamp the new steering knuckle securely in a vise.
Reassemble the Steering Knuckle
- Clean the wheel hub and splash guard.
- Hand tighten the 4 bolts (17 mm) that attach the wheel hub and splash guard to the steering knuckle.
- Tighten the wheel hub bolts to 88.3 N•m (9.0 kg-m, 65 ft-lbs).
- Install the steering knuckle to the vehicle as follows:
a. Lift the steering knuckle up against the upper link and install the upper link to steering knuckle bolt.
b. Install a new nut (14 mm) to the mounting bolt of the upper link and steering knuckle.
c. Tighten the steering knuckle nut (14 mm) to 55.0 N•m (5.6 kg-m, 41 ft-lbs).
d. Insert the drive shaft into the wheel hub (AWD models).
e. Install the steering outer socket using a new nut (18 mm).
f. Tighten the steering outer socket nut (18 mm) to 45.0 N•m (4.6 kg-m, 33 ft-lbs).
g. Install a new cotter pin to the steering outer socket nut.
h. Install the transverse link nut (22 mm).
i. Tighten the transverse link nut (22 mm) to 136.0 N•m (14.0 kg-m, 100 ft-lbs).
j. Install a new cotter pin to the transverse link nut.
- Install the front brake caliper assembly as follows:
a. Install the front disc brake rotor using the alignment marks.
b. Use a wheel nut to secure the front disc brake rotor.
c. Install the front brake caliper using the 2 existing bolts (22 mm).
d. Tighten the front brake caliper bolts (22 mm) to 123.0 N•m (13.0 kg-m, 91 ft-lbs).
e. Install the front brake hose bracket to the steering knuckle using the 2 existing bolts (12 mm).
f. Tighten the front brake hose bracket bolts to 13.2 N•m (1.3 kg-m, 117 inch-lbs).
- Install the front wheel speed sensor to the steering knuckle as follows:
a. Install the front wheel speed sensor harness bracket to the steering knuckle using the existing bolt (10 mm).
b. Tighten the front wheel speed sensor harness bracket bolt (10 mm) to 2 N•m (1.3 kg-m, 117 inch-lbs).
c. Install the front wheel speed sensor grommets into the front wheel speed sensor harness bracket.
d. Install the front wheel speed sensor to the steering knuckle using the existing bolt (10 mm).
e. Tighten the front wheel speed sensor bolt (10 mm) to 9.0 N•m (0.9 kg-m, 80 inch-lbs).
f. For AWD models, install the wheel hub lock nut (32 mm) to the drive shaft.
g. Tighten the wheel hub lock nut (32 mm) to 125.0 N•m (13.0 kg-m, 92 ft-lbs).
h. Install a new cotter pin to the wheel hub lock nut.
i. Remove any wheel nuts securing the front disc brake rotor.
- Repeat steps 18–24 on pages 13 – 17 for the opposite side of the vehicle, and then proceed to step 26.
- Install both front wheel and tire assemblies.
- Tighten the wheel nuts to 108.0 N•m (11.0 kg-m, 80 ft-lbs).
- Perform a 4-wheel alignment.
- Adjust the steering angle sensor neutral position using the CONSULT-III plus.
- To adjust the steering angle sensor neutral position on EPS equipped vehicles, refer to the ESM section below.
➢ DIAGNOSIS > BRAKES > BRAKE CONTROL SYSTEM > BASIC INSPECTION > BRAKE CONTROL SYSTEM > ADJUSTMENT OF STEERING ANGLE SENSOR NEUTRAL POSITION
- To adjust the steering angle sensor neutral position on DAST equipped vehicles, refer to the ESM section below.
➢DIAGNOSIS > STEERING > STEERING CONTROL SYSTEM > BASIC INSPECTION > DIRECT ADAPTIVE STEERING > DAST CALIBRATION (MODE 1)
IMPORTANT: Follow all cautions and notices in the ESM procedure.
PARTS INFORMATION
| DESCRIPTION | PART NUMBER | QUANTITY |
| NUT-KNUCKLE SPINDLE | 40262-EG000 | 2 |
| PIN-COTTER | 08921-3252A | 4 |
| PIN-COTTER (AWD ONLY) | 40073-0L700 | 2 |
| SPINDLE-KNUCKLE, LH | D0015-4GA0A | 1 |
| SPINDLE-KNUCKLE, RH | D0014-4GA0A | 1 |
CLAIMS INFORMATION
Submit a “CM” line claim using the following claims coding:
| CAMPAIGN (“CM”) ID | MODEL | DESCRIPTION | OP CODE | FRT |
| R21A5 | 2WD | Inspect both steering knuckles | R21A50 | 2.7 Hrs |
| Inspect both steering knuckles and replace one or both steering knuckles | R21A51 | 2.7 Hrs | ||
| AWD | Inspect both steering knuckles | R21A52 | 2.8 Hrs | |
| Inspect both steering knuckles and replace one or both steering knuckles | R21A53 | 2.8 Hrs |
AMENDMENT HISTORY
| PUBLISHED DATE | REFERENCE | DESCRIPTION |
| July 6, 2021 | ITB21-017 | Original bulletin published |
| August 23, 2021 | ITB21-017A | Steps 15 and 17 revised, Figure 19 updated |
Remedy Instructions and TSB
RCRIT-21V402-9400.pdf 2547.428KB
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Remedy Instructions and TSB
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