| “This site contains affiliate links for which OEMDTC may be compensated” |
August 20, 2020 NHTSA CAMPAIGN NUMBER: 20E057000
Insufficiently Crimped Brake Master Cylinder
If the piston pops out of the master cylinder housing, a complete loss of braking or unintended brake application can occur, increasing the risk of a crash. Owners may initially notice brake fluid leaking onto the vacuum booster, or a change in brake pedal travel and feel.
NHTSA Campaign Number: 20E057
Manufacturer Motorcar Parts of America, Inc.
Components SERVICE BRAKES, HYDRAULIC
Potential Number of Units Affected 2,403
Summary
Motor Parts of America, Inc. (MPA) is recalling certain Duralast NM4222 and NM55381 brake master cylinders sold as aftermarket replacement parts for 2012-2017 Volkswagen Beetle, 2005-2018 Volkswagen Jetta and 2007-2010 Volkswagen Jetta GLI vehicles. The crimping of the aluminum housing may be insufficient, allowing the master cylinder piston to pop out of the housing.
Remedy
MPA will notify owners directing them to take the component to an AutoZone store to return the recalled Master Cylinder for a full refund. Exchanges for replacement Master Cylinders can occur after October 1, 2020. This recall began August 28, 2020. Owners may contact MPA customer service at 1-833-758-0239 or email recall@motorcarparts.com.
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.safercar.gov.
Supplemental Information for Equipment Report — 20E-057
1) Additional Information on Brand Name
| Customer | Part | Brand | Vehicle Applications |
| AutoZone | NM4222 | Duralast | 2005-2008 VOLKSWAGEN: JETTA |
| Factory Motor Parts | NM4222 | FVP | 2005-2008 VOLKSWAGEN: |
| Any Part-Rama Auto | NM4222 | Quality- Built | 2005-2008 VOLKSWAGEN: JETTA |
| MOOG LOUISVILLE WAREHOUSE |
NM4222 |
Quality- Built | 2005-2008 VOLKSWAGEN: JETTA |
| PISTON RING SERVICE SUPPLY |
NM4222 |
Talon |
2005-2008 VOLKSWAGEN: JETTA |
| Customer | Part | Brand | Vehicle Applications |
| AUTOZONE | NM55381 | Duralast | 2005-2019 SEAT: ALTEA;
LEON / VOLKSWAGEN: BEETLE; BORA; JETTA |
| PISTON RING SERVICE SUPPLY | NM55381 | Talon | 2005-2019 SEAT: ALTEA; LEON / VOLKSWAGEN: BEETLE; BORA; JETTA |
| WM AUTOMOTIVE WAREHOUSE | NM55381 | Quality- Built | 2005-2019 SEAT: ALTEA;
LEON / VOLKSWAGEN: BEETLE; BORA; JETTA |
2) Describe the cause (this adds a picture to the description included in the report):
Based upon the information received from the component part manufacturer Yusin:
WHY1: Crimping machine did not put enough pressure on casting to secure seal properly.
WHY2: Process operator reversed the crimping fixture which caused the tool to limit the crimping angle and pressure.
WHY3: The SOP was not followed correctly and controls were not adjusted to include two seconds of applied pressure.
WHY4: The sum of tolerances between the casting and plastic seal, plus the lack of controls to lock the plastic seal during assembly can lead to improper crimping, allowing the seal to move.
WHY5: The master cylinder design does not consider an error proofing solution to secure the seal regardless of assembly and operator mistakes.
| When? | What ? | What do we do about it? |
| Wednesday, June 17, 2020 | Mark Friedberg [mailto:mark@bourneusa.com] sent an email to MPA Quality about nonconforming product shipped to MPA (no safety issue mentioned). | MPA Sr. QE, responded by asking for bracket or lot numbers and if this was a safety concern.
Containment started: Request to MPA subsidiaries (MPA, MPM2) & parts in transit to quality control hold (QCH). |
| Wednesday, June 17, 2020 | Mark Friedberg sent an email (below) to MPA Sr. QE Raul Viramontes:
Hi Raul, based on what we’ve seen, if there is a problem it appears to be found during bleeding/initial installation of the assembly. Yusin is investigating and will send a corrective action. What is the warranty rate for MPA?” |
MPA Sr. QE Raul Viramontes, responded with warranty charts and requested a conference call June 19. |
| Thursday, June 18, 2020 | Mark Friedberg replied – If you want to have a call we can but not sure what I can add to a conversation tomorrow.
We don’t have the corrective action form from Yusin. |
MPA Sr. QE responded on June 22, fill out the CAR form latest June 26 to set up a meeting and go over the root causes and preventive/corrective actions. |
| Monday, June 22, 2020 | Mark Friedberg replied – We won’t have a corrective action completed by Friday June 26. Thursday and Friday this week are a holiday in China.
Yusin has identified the issue and is working towards what will be a corrective action. Yusin purchased new equipment to assemble this master that was delivered to the factory last week and is being set up now. Complete testing results and a final corrective action could be available later next week. |
On June 26 MPA Buyer, requested available date to review the corrective action. |
| Monday, June 29, 2020 | Mark Friedberg sent supplier corrective action form to MPA. | MPA involved Executive VPA Supply Chain to set up a conference call with Yusin. Elevated to VP Engineering. Requested confirmation and root cause; scheduled emergency conference call with Yusin. |
| Wednesday, July 1, 2020 | Conference call with Yusin.
Supplier explained issue, root cause and his point of view of the failure mode as well as provided suspect defective date code. Supplier disagreed with this being a safety issue. |
MPA Investigation started: July 1, requested samples from MPM2 for corporate testing.
July 6, samples arrived to Torrance from MPM2. July 7, pull test started. |
| Wednesday, July 8, 2020 | Reviewed pull test results on meeting. | MPA Sr. QE Raul Viramontes, sent out results and our engineering department recommended a
Durability Test. |
| Thursday, July 9, 2020 | Durability test started. | Monitored part. |
| Friday July 10, 2020 | Communication with supplier about date code relation with MPA date code. | Review if MPA had any in house, we did not. |
| Monday , July 13, 2020 | Durability test completed. | Durability Report sent out, July 14. |
| Wednesday, July 15, 2020 | Meeting to review durability report. | Technical meeting to review results took place and decided to elevate the issue to Executive Management.
Scheduled executive meeting on July 16. |
| Thursday, July 16, 2020 | Elevation of the issue to Executive Management. | Decision to report to NHTSA. |
| Friday, July 17, 2020 | Report sent to NHTSA |
4) Describe what distinguishes the remedy component from the recalled component. (adds chart and picture to description)
Master cylinder was re-designed by manufacturer Yusin to include a C-clip which will secure the seal. MPA has validated C-clip redesign made by manufacturer Yusin’s with push (destructive) and durability test.
| Recalled part number (Superseded by C-clip) | Remedy part number with C-clip design | |
| Yusin | V0300-1(AH) | V0820(AH) |
|
Equivalent to MPA |
NM4222 | NM4333 |
| NM55381 | NM55677 |
MPA Durability test simulates the vehicle braking system. The tester consists of 4 wheel cylinders and an electric actuator that cycles the master cylinder. The unit was bench bled and filled with dot 3 brake fluid and cycled every 3-5 seconds to reach a pressure of 600-1500 psi. Every hour a pressure hold test was performed to ensure there was no pressure loss. The unit ran for 70 hours (49,426 cycles) with no signs of pressure loss or visible leaks. The test was resumed for further testing and stopped at 424 Hours (299,503 cycles) with no signs of pressure loss or leaks. Once removed from the tester the unit showed no signs of fluid leaks or movement of the seal retainer and C-clip. To measure the strength of the C-clip retention destructive testing was also performed. The unit was cut at the neck of the mounting flange and a force was applied to the primary piston in the direction of the retainer. This simulates the force direction the internal springs would apply on the C-clip when the unit is fully assembled. A force of 2023 lbs. was applied causing the piston to break through the plastic seal retainer. The aluminum casting did not fracture and the c clip showed no signs of movement from its initial positon. This was well above the OEM unit tested, which had the casting fracture at 1600 lbs. From this, we can conclude that the improved design with the addition of the C-clip retainer will not have any of the seal retention failures the previous design had and that the design meets and exceeds OEM seal retainer retention specifications.
July 31, 2020
Dear ,
We write this letter to inform you that Motorcar Parts of America, Inc. has decided to deploy a voluntary recall of Master Cylinder Part Number NM4222.
Please quarantine this unit, if you still have it in stock. Please confirm back to Gary DelGreco, if you have that still in stock. We show that you have purchased one (1) of this unit and have not had any core or warranty returns,
To date, there have been no incidents reported relating to the Part Number listed above. We are initiating this voluntary recall, out of an abundance of caution, due to a report from our supplier.
We apologize for any inconvenience this may cause you or your customers. We will work diligently to alleviate any issues related to this voluntary recall.
Thank you for your time and consideration, please contact me at rmochulsky@motorcarparts.com, or contact Gary DelGreco at gdelgreco@motorcarparts.com, with any comments or concerns.
Best Regards,
Rick Mochulsky
Rick Mochulsky
SVP, Sales and Marketing
2929 California Street ● Torrance, CA. 90503 ● Tel (310) 212-7910 ● Fax (310) 212-7581
1 Affected Product
Equipment
| BRAND | PART NO. | PRODUCTION DATES |
| DURALAST | MASTER CYLINDER | |
9 Associated Documents
Chronology
RMISC-20E057-0186.pdf 299.654KB
Loading...
Reload document 
Open in new tab
Recall Quarterly Report #4, 2021-2
RCLQRT-20E057-2399.PDF 211.434KB
Loading...
Defect Notice 573 Report
RCLRPT-20E057-3749.PDF 217.394KB
Loading...
Manufacturer Notices(to Dealers,etc)
Loading...
Recall Quarterly Report #3, 2021-1
RCLQRT-20E057-6331.PDF 211.326KB
Loading...
Recall Quarterly Report #2, 2020-4
RCLQRT-20E057-8832.pdf 210.957KB
Loading...
Recall Quarterly Report #1, 2020-3
RCLQRT-20E057-1806.PDF 211.147KB
Loading...
Recall Quarterly Report #5, 2021-3
RCLQRT-20E057-9682.PDF 211.546KB
Loading...
Recall Quarterly Report #6, 2021-4
RCLQRT-20E057-6101.PDF 211.639KB
Loading...
Latest Recalls Documents
https://www-odi.nhtsa.dot.gov/acms/cs/documentList.xhtml?docId=20E057&docType=RCL
- EASY OPERATION: For brake pad and shoe replacement and rotating pistons back into the caliper on your car, truck or 4-wheel drive disc brake vehicle. Includes both right-handed and left-handed thrust bolt assemblies.
- UNIVERSAL COMPATIBILITY: This multi-disc brake caliper wind back tool kit includes 18 adapters fitting hundreds of vehicle makes and models including American, European, and Japanese. See the Product Description section below for a more complete list.
- HEAVY-DUTY DURABILITY: Carbon steel construction with a rust-proof blasted finish, these components will stand up to heavy use and accidental drops. It’s perfect for everyone from DIY novices to professional mechanics.
- CONVENIENT CARRY CASE: Includes an ABS carrying case with pre-sized slots for every component - right and left-handed thrust bolts, 2 retaining plates, and 18 disc adapters.
- TECHNICAL SUPPORT: Each kit includes a detailed user manual with an illustrated parts diagram. We pursue outstanding quality and professional technical support. If you are not satisfied with this product or if you have any questions, please let us know.
- MULTIFUNCTION 4-1: Spurtar Brake Caliper Compression Tool is ideal for automotive brake pump adjustment. Works on single piston, dual piston and quad piston, as well as single and twin piston floating calipers. This item is for disc barke, not for drum brake.
- RATCHETING: Automotive brake caliper centrally located ratchet screw creates even force when compressing pistons to ensure proper alignment and to prevent damage to your brake components
- 360-DEGREE RATCHETING: Ratchet technology of this Brake Caliper Tool provides a 360-degree swing that allows you to keep the compression plates in place while you lever the handle back and forth to spread or retract the plates
- EASY TO USE: This caliper piston tool extended reversing lever allows for easy change from spreading to retracting. Cushioned grip handle provides comfortable and easy grip
- BUILT TO LAST: Constructed of carbon steel, the ratcheting screw and pad plates are designed for maximum strength and durability, which is an useful brake tools for automotive replacement brake system parts
- Ideal for 4 wheel drive cars/trucks
- Includes left and right handed thrust bolt assemblies
- The kit includes 18 adapters which fit a variety of modern car brands
- 24Pc kits rotates piston back into caliper for fitting of new brake shoes and pads
- Storage case and a pair of gloves included.
- Effortless Brake Maintenance: This brake caliper wind back tool kit is designed for easy operation, making brake pad and shoe replacement and piston rotation back into the caliper a breeze. It's a must-have for your car, truck, or 4-wheel drive disc brake vehicle. The kit even includes both right-handed and left-handed thrust bolt assemblies for added convenience.
- Versatile Compatibility: With 18 adapters that fit hundreds of vehicle makes and models, this kit offers universal compatibility. It caters to a wide range of vehicles, including American, European, and Japanese brands. For a more comprehensive list of compatible vehicles, please refer to the Product Description section below.
- Built to Last: Constructed from carbon steel and boasting a rust-proof blasted finish, this tool kit is built to withstand heavy use and accidental drops. It's a reliable choice for everyone, from DIY enthusiasts to professional mechanics, ensuring it can handle the demands of various brake maintenance tasks.
- Organized and Portable: The kit comes with an ABS carrying case that features pre-sized slots for each component, including right and left-handed thrust bolts, two retaining plates, and 18 disc adapters. This organization not only keeps your tools in order but also makes the kit highly portable and easy to transport.
- Package Included: The Piston Compression Sets includes 18 x Disc Adapters (#0, #2, #3, #4, #5, #6, #7, #8, #9, #10, #A, #E, #F, #K, #K1, #K2, #M, #N); 2 x Handed Thrust Bolt Assemblies (Left & Right) ;2 x Retainer Plates (#O, #1) ;2 x Rubber Coated Gloves.
- 【Fit for Disc Brake】 The brake caliper press tool is equipped with two groups of push boards: 7.01x2.36 inches and 4.53x2.17 inches, Suitable for most single and twin pistons floating calipers, twin and quad pistons fixed calipers or some sextuplet pistons fixed calipers (Just make sure the piston calipers space can accommodate the spreader)
- 【Working Principle】The spreader can spreading to push the boards or retracting when finished it. (Ajust by the switch). In expanded mode, the centrally located ratchet screw creates uniform thrust to the push boards that can quickly push several pistons in the caliper at the same time. Effectively save energy and greatly improve efficiency.
- 【How to use】Make the push boards both sides Centralized Alignment the pistons, let both sides of the push boards be forced at the same time (press both sides to assist in starting until push boards press the pistons), swing the handle until the push boards press the pistons to the suitable position, last, ajust the switch, retract the boards to remove the spreader.
- 【Size Reference】Two groups of push boards size: 7.01x2.36 inches and 4.53x2.17 inches; Telescopic range: fully retracted: 1.88”, fully expanded: 3.03”.
- Six - Months Customer Service for Five Bananas Brake Caliper Tool. Pls email us first when you have any problem, we promise will provide the best solutions.
- UNIVERSAL COMPATIBILITY:This Orion Motor Tech 24-piece brake caliper tool set includes 2 retaining plates, left and right thrust bolt assemblies, 18 disc adapters, 2 brake hangers, and a pair of gloves; keep your tools in the heavy-duty blow molded case for easy storage and transportation
- EASY OPERATION: Attach the plate to the handle, select the disc adapter that fits your vehicle, then simply turn to rotate the pistons back into their calipers to clear your pads; embedded magnets in each thrust bolt assembly easily hold your drive keys and adapters in place during use
- HEAVY-DUTY MATERIAL: This set of brake caliper compression tool is crafted from structural-grade 45# steel with industry-leading technology to offer superior strength and durability; the protective sandblasted surface further enhances its wear and corrosion resistance
- CONVENIENT STORAGE: The blow-molded ABS case of this brake piston compressor tool kit comes with pre-sized and labeled slots for easy organization, storage, and transport between jobs
- SATISFACTION GUARANTEED: This disc brake caliper tool set is backed with its strong warranty and Orion Motor Tech's usual friendly 24/7 customer service, ensuring that you'll be able to use this kit for years to come!
- [Durable Material] The piston coiling tool of Disc brake caliper is made of 45 steel, which has a long service life, high hardness and is not easy to deform.
- [Size]The distance between the adapter plates and the centers of the pins is approximately 22 millimeters to 32 millimeters.
- [Easy to Use] The car rear brake pad retraction tool is easy to use, and there are retraction pistons on both the left and right threaded piston calipers, making the operation simple.
- [Efficient Tool] The brake caliper piston winding tool is used to install the brake pads of domestic and imported cars and trucks with return air piston calipers.
- [Applicable] The handle set brake caliper winding tool is very suitable for removing/installing press fit parts, such as ball joints, universal joints, and truck brake fixing pins.
- Works on twin and quad piston fixed calipers, as well as single and twin piston floating calipers
- Centrally located ratchet evenly spreads force in a parallel manner to prevent misalignment of pistons
- Ratchet technology gives a full 360 degree swing so that the spreader may be placed at any position
- Extended reversing lever allows for easy change from spreading to retracting
- Made in the USA
- Compresses Dual Brake Pistons Simultaneously.
- Squeeze the tool handle until the plunger contacts the inboard brake pad.
- Continue squeezing to compress both pistons.
- Makes dual piston pad replacement a simple job.
- Patent: 7,076,850
- 【Multifunction 4-1】： 4 in 1 Universal Disc Brake Caliper Compression Tool works on single piston, dual piston and quad piston, as well as single and twin piston floating calipers.Brake Caliper Compression Tool is ideal for automotive brake pump adjustment.
- 【360-Degree Ratcheting & Switch】360° brake caliper press tool allows you to keep the compression plates in place while you lever the handle back and forth to spread or retract the plates, and to prevent damage to your brake components, adjustment switches allow for quick switching between extended and compressed modes, turn the plates anticlockwise to retract, and clockwise to expand.
- 【Versatile Fit】Steel Plate Size: 4.53" x 2.24" and 5.79" x 2.36" ; Telescopic Range: 1.59" when fully retracted; 2.83" when fully expanded. Compatible with a wide range of automotive brake caliper models and sizes.
- 【High Quality Thickened Push Plate】Brake piston compressor wrenchtwo large push plates is made of 45 gauge steel, which has excellent strength and toughness, and external black oxide finish resists rust and corrosion, for long term usage, because of ratcheting mechanism, both spreading plates need pressure to start the ratchet.
- 【Ergonomically Handle】Brake piston compressor wrench use ergonomically stainless steel lever, soft frosted nonslip rubber handle supply comfortable balance stress and non-slip grip, the extended handle and double riveting allows for easy change from spreading to retracting, easy to use and labor-saving, not easy to fatigue.
Last update on 2024-06-30 / Affiliate links / Images from Amazon Product Advertising API
This product presentation was made with AAWP plugin.