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July 27, 2021 NHTSA CAMPAIGN NUMBER: 21V573000
Inoperative rear axle brakes can increase the distance required to stop, increasing the risk of a crash.
NHTSA Campaign Number: 21V573
Manufacturer Mack Trucks, Inc.
Components SERVICE BRAKES, AIR
Potential Number of Units Affected 124
Summary
Mack Trucks, Inc. (Mack) is recalling certain 2021 Granite, LR, and TerraPro vehicles. The rear drive axle may have the incorrect type of brake cam installed, which could result in inoperative rear axle brakes.
Remedy
Dealers will inspect the brake cams, and incorrect brake cams will be replaced, along with brake shoes, hardware, and wheel seals, as necessary, free of charge. Owner notification letters were mailed on August 10, 2021. Owners may contact Mack customer service at 1-800-866-1177. Mack’s number for this recall is SC0427.
Notes
Owners may also contact the National Highway Traffic Safety Administration Vehicle Safety Hotline at 1-888-327-4236 (TTY 1-800-424-9153), or go to www.nhtsa.gov.
RECALL INFORMATION
(July, 2021)
Mack has determined that certain model year 2021 trucks equipped with Meritor drum brakes may have the incorrect brake cams installed on the rear most drive axle.
Mack Trucks has not received any complaints or reports of vehicle crashes because of this non-compliance.
To ensure that these vehicles are equipped with the correct brake cams an inspection will be required. The wheels and drums on the rear most axle will need to be removed to gain access to the brake cams for inspection. If the brake cams are found to be correct, (see inspection process below) reassemble the unit and no further action is required. If the brake cams are found to be incorrect, replacement of the brake cams, brake shoes, brake hardware, and wheel seals may be required.
VEHICLES AFFECTED
Certain Mack North America vehicles manufactured between June, 29, 2020 to September, 22, 2020.
VEHICLE QUANTITY
There are 124 vehicles affected by this recall (124 U.S., 0 Canada).
Repair Instructions
1. Secure vehicle for service.
2. Following IMPACT operation ID 5122-03-02-01, remove both brake drums from the rear most drive axle.
3. Using the images below, inspect both passenger and driver side, rear most axle brake cams to ensure proper brake cams are installed.
a. If inspection is OK proceed to step 12.
b. If inspection is NOK proceed to step 4.
4. Remove brake shoes and brake hardware.
a. Refer to Meritor Literature on Demand (“LOD”) for proper procedure. The proper Maintenance Manual 4 (“MM4”) can be downloaded free of charge here: https://www.meritor.com/literature-on-demand
Correct manual title and picture shown for reference.
5. Remove the axle flange nuts and cones on the affected axle.
6. Remove the rear most axle shafts.
7. With axle shafts removed, follow hub removal procedure for PreSet Plus hubs in the Conmet service manual 10084476. Found here: https://conmet.com/literature/#wheelendlit
NOTE: The correct service manual is located under “Service Manual for ALL Hub Applications”.
8. Remove and replace the affected brake cams using the above Meritor MM4 from the Meritor LOD system.
9. Inspect the brake shoes, Drums, and Brake hardware for reuse. If any defects are found related to the incorrect brake cam being installed, replace with new components. Refer to IMPACT parts tab for current part numbers.
10. Reinstall the brake shoes and the brake hardware referencing the Meritor MM4 service manual.
11. Replace the wheel seal and install the drive hub according to specifications and procedures found in the ConMet service manual referenced above.
12. Complete the drum installation procedure found in IMPACT operation ID 5122-03-02-01.
13. Release the Vehicle for service.
SEOCONTENT-START
Date Number Release Page 07.2021 SC0427 01 1(5)
Rear Most Drive Axle Brake Cam Inspection
GR, LR, and TE
SAFETY RECALL
Mack Trucks Inc.
Greensboro, NC USA
Page 2 of 5
Mack Truck Inc.
Safety Recall Date 07.2021 Page 5 of 5
REIMBURSEMENT
This repair is covered by an authorized Safety recall. Reimbursement is obtained through the normal claim handling process.
UCHP Reimbursement
Claim Type (used only when uploading from the Dealer Business System)
40
Recall Status
Vehicle repaired per instructions
1-Modified per instructions
Labor Codes
Primary Labor Code:
5143-06-02-01 Brake Camshaft, Checking
0.9
Additional Labor Code (if applicable):
5141-03-03-02 Brake Camshaft, Replacement (one driven Wheel) (Wheel and Brake Drum Removed)
0.9 (per wheel)
Causal Part
TDA2210C8323
Authorization Number
C6630
Note: Dealers are to perform Safety Recall on all subject vehicles at no charge to the vehicle owner regardless of mileage, age of vehicle or ownership (original purchaser or subsequent purchasers). Whenever vehicles are subject to a Safety Recall are brought to your dealership for service, or taken into your dealership vehicle inventory, it is strongly recommended that every effort be made to perform the recall correction before the vehicle is sold or released to the owner.
**************************************************************************************************************
MACK TRUCKS
RECALL ALERT
Subject:
Recall Number: Date:
Safety Recall SC0427, Rear Rear Brake Insp SRA-M427
July 30, 2021
Applicable Markets: ☒U.S. Canada
Description
Mack has determined that certain model year 2021 trucks equipped with Meritor drum brakes may have the incorrect brake cams installed on the rear most drive axle. The rear rear axle brakes may be inoperative, which can result in increased stopping distances and potential risk of a vehicle crash.
The wheels and drums on the rear most axle will need to be removed to gain access to the brake cams for inspection. If the brake cams are found to be correct, reassemble the unit and no further action is required. If the brake cams are found to be incorrect, replacement of the brake cams, brake shoes, brake hardware, and wheel seals may be required.
Model and Model Years Affected
• Certain Mack 2021 Granite, LR and TerraPro model vehicles; Build dates: June 29, 2020 through September 22, 2020.
Vehicle Quantities
• 124 (all US)
Dealer Responsibilities
• The National Traffic and Motor Vehicle Safety Act and Canadian Motor Vehicle Safety Act requires dealers to ensure that all new and used vehicles are free of safety defects and comply with all relevant safety standards at the time of delivery to the consumer.
• Dealers should make their personnel aware of the safety recall. In the event that a dealer has a vehicle included in the safety recall in their inventory to be sold, the condition must be corrected before releasing it to a customer.
Notification Release Schedule
• Vehicle list will be posted on the Trucks Dealer Portal on July 30, 2021.
• Owner notification letters will be released on or before August 27, 2021.
Contact
If you have questions or concerns about this recall, contact the Regulatory Affairs Department at vtna.regulatoryaffairs@volvo.com.
© Mack Trucks, Inc. CONFIDENTIAL – For limited distribution only to circulation list above. This bulletin, and any information herein, is subject to change by Company without notice. For the most current and accurate information, always refer to Trucks Dealer Portal for the electronic version of this document.
SEOCONTENT-END
3 Affected Products
Vehicles
| MAKE | MODEL | YEAR |
| MACK | GRANITE (GR) | 2021 |
| MACK | LR | 2021 |
| MACK | TERRAPRO (TE) | 2021 |
8 Associated Documents
Recall Quarterly Report #2, 2021-4
RCLQRT-21V573-3901.PDF 211.225KB
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Recall Quarterly Report #1, 2021-3
RCLQRT-21V573-5950.PDF 211.123KB
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Remedy Instructions and TSB
RCRIT-21V573-1882.pdf 379.186KB
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Recall Acknowledgement
RCAK-21V573-5011.pdf 646.081KB
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Defect Notice 573 Report
RCLRPT-21V573-3911.PDF 213.849KB
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Recall 573 Report- Amendment 2
RCLRPT-21V573-5558.PDF 214.33KB
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Manufacturer Notices(to Dealers,etc)
RCMN-21V573-4709.pdf 188.488KB
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Recall Quarterly Report #3, 2022-1
RCLQRT-21V573-9495.PDF 211.305KB
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Latest Recalls Documents
For the Latest and Most Recent Recalls Information Visit the link below…
https://www-odi.nhtsa.dot.gov/acms/cs/documentList.xhtml?docId=21V573&docType=RCL
- Easily Removes and Replaces the S-Cam Return Spring.
- The tip design cradles the return spring to keep it from sliding off.
- Heat treated material and extra-long shaft provides strength and stability.
- Ergonomic handle for comfort.
- 2-in-1 S-Cam Brake Tool, offers technicians a more efficient method for changing brake shoes on an S-Cam drum brake assembly
- The tool is comprised of a steel shaft with a U-shaped fork on one end to stretch the retaining spring so that both halves of the brake shoe are held together, which enables the user to hook up the pin
- An S-shaped device on the opposite end enables the user to position the brake shoes in a way that allows leverage for installation of the rollers
- The hooked end pulls the brake shoes apart so that the rollers can be installed faster and more safely
- Function: Safely replace brake shoes on heavy-duty tractors and trailers
- Hook Design: This tool has a little hook that engages the spring at the J eye on the end, and the bar goes under the axle to leverage the spring out of position
- Easy to Use: Simply hook the retaining spring loop and press down against the axle.
- Material: Made of high quality steel. Corrosion-resistant & Durable Steel construction with extreme anti-wear property.
- Package Include: 1pcs Air Brake Spring Tool
- 【GREAT COMPATIBILITY】-- This brake return spring tool fit for large trucks and trailers with air brakes with S cam design. Use for install and remove return springs on commercial truck and trailer.
- 【WIDE APPLICATION】The Spring Tech Tool compatible with s-cam return spring. If is s-cam brake type, the Truck Brake Spring Tool works on the return spring install/uninstall.
- 【EXCELLENT FUNCTION】-- Provides leverage to back out brake shoe and remove roller cam. The tool can cups the return spring to prevent it from sliding off and possible injury. The end with unique slight bend design to make it fit better and not slip as easily.
- 【EASY TO USE】-- Safely, quickly and easily remove and install the return spring. Slide the Brake Return Spring Tool between the shoe webs over the top roller and hook the top of the return spring below the coil. Push down on the handle and unhook the spring from the pin by pulling back or pushing forward on the handle depending on the direction of the spring opening.
- 【SUPERIOR QUALITY】-- Made of high quality steel, will no deformation and not break. surface black coated to ensure resistance to corrosion and rust, protection and years of trouble-free use. Non-slip, extra long handle provides excellent stability.
- OTC's S-Cam Air Brake Spring Tool eliminates makeshift, unsafe methods of unhooking and reconnecting brake shoe retaining springs
- For use when replacing brake shoes on heavy-duty tractors and trailers
- Simply hook the retaining spring loop and press down
- Lever action agains the axle makes the job a snap
- Crafted from high-grade materials to ensure quality performance over the lifetime of the tool
- -Brakes Tool for Trucks- Heavy duty, anti-corrosion materials ensure high performance of the brake repair brake adjusting tools.
- -Easy to Connect and Disconnect- Rear drum brake return springs. Make it easy to handle with our hands.
- -Great Value- The tool for shoe brakes has a hook in the middle which is used to engage the J-eye of a spring. Simply hook the spring loop, and then press down against the axle.
- -Color- Black 5081.
- -12 Months Warranty-
- OTC S-Cam Brake Slack Adjuster Tool
- Enables you to quickly check the brake adjustment on class 7 or 8 trucks and trailers equipped with S-cam brakes
- Features a sturdy four-position handle to provide the leverage you need at the proper angle
- Works on manual or automatic slack adjusters
- Crafted from high-grade materials to ensure quality performance over the lifetime of the tool
- 【GREAT COMPATIBILITY】-- This brake return spring tool fit for large trucks and trailers with air brakes with S cam design. Use for install and remove return springs on commercial truck and trailer.
- 【WIDE APPLICATION】The Spring Tech Tool compatible with s-cam return spring. If is s-cam brake type, the Truck Brake Spring Tool works on the return spring install/uninstall.
- 【EXCELLENT FUNCTION】-- Provides leverage to back out brake shoe and remove roller cam. The tool can cups the return spring to prevent it from sliding off and possible injury. The end with unique slight bend design to make it fit better and not slip as easily.
- 【EASY TO USE】-- Safely, quickly and easily remove and install the return spring. Slide the Brake Return Spring Tool between the shoe webs over the top roller and hook the top of the return spring below the coil. Push down on the handle and unhook the spring from the pin by pulling back or pushing forward on the handle depending on the direction of the spring opening.
- 【SUPERIOR QUALITY】-- Made of high quality steel, will no deformation and not break. surface black coated to ensure resistance to corrosion and rust, protection and years of trouble-free use. Non-slip, extra long handle provides excellent stability.
- Safely work and replace brake shoes on heavy-duty tractors and trailers.
- The tool has a little hook that engages the spring at the J eye on the end, and the bar goes under the axle to leverage the spring out of position.
- The tool is used on the 2 springs on the side of the shoe and it can in close proximity to the brake chambers or suspension. Simply hook the retaining spring loop and press down against the axle. Lever action against the axle makes the job a snap.
- Made of high quality carbon steel, have a unparalleled long lifespan with great durability.
- Package: 1*S-Cam Spring Tool. Having any questions, contact to us and got an ideal reply. With a 180 days warranty. Thank you.
- [Function]: This tool is used to install and remove return springs in commercial truck and trailer applications.
- [Fitment]: For s-cam return spring, if is s-cam brake type, it works on the return spring install/uninstall.
- [Features]: Unique design cups the return spring to stop it from sliding off and possible injury, fast, safe, and easy way to remove and replace return springs. The slight bend at the end makes it fit better and not slip as easily.
- [Material]: Tool is carefully forged from the finest alloy steels for a long service life. Easy to use and reduce your maintenance costs, extra-long handle provides exceptional stability.
- [How to use]: Slide the Spring Tech Tool between the laces over the top roller and hook the top of the return spring under the coil. Press the handle down, and depending on which direction the spring opens, pull back or push the handle forward to unhook the spring from the pin.
Last update on 2024-04-15 / Affiliate links / Images from Amazon Product Advertising API
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