23E002 Cooktop Gas Valves May Fracture Causing Gas Leak – Suburban SDS2 2-Burner Drop-in Cooktops

January 16, 2023 NHTSA CAMPAIGN NUMBER: 23E002000

Cooktop Gas Valves May Fracture Causing Gas Leak

A gas leak in the presence of an ignition source can increase the risk of a fire.

 

NHTSA Campaign Number: 23E002

Manufacturer Suburban ManufacturingeBay logo CO

Components EQUIPMENT

Potential Number of Units Affected 28,536

 

Summary

Suburban ManufacturingeBay logo Co (Suburban ManufacturingeBay logo) is recalling certain SDS2 2-Burner Drop-in Cooktops with part numbers 3031AST and 3032AST. The internal aluminum burner tubes that connect to the gas valves may fracture and cause a gas leak.

 

Remedy

Dealers will install a regulator support bracket in unsold vehicles. The remedy for sold units include inspecting the burner tubes, and repair, as necessary, free of charge. Previously sold units will be inspected and replace the cooktop as necessary, free of charge. Owner notification letters are expected to be mailed March 13, 2023. Owners may contact Suburban customer service at 1-866-645-0658. This is an expansion of NHTSA recall 22E-035.

 

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.

 


Q&A for SDS2 3031/3032 Recall – active list of questions we are getting and answers, this will ensure we are communicating the same message to all customers.

1. What risk mitigation can our customers take if they have a vehicle impacted by this Suburban recall?

a. The customer should discontinue use of their cooktop.

 

2. Is there any risk of leak if the propane is on to the unit and the cooktop dials remain in the off position?

a. The recall does not impact this risk. If the knobs are off there should be no gas flowing through the regulator. There is always a risk in the connection of the supply line to the unit but this recall does not impact that risk.

 

3. What if I have units on my lot with and 3032AST’s?

a. You can order 3333AST’s to replace them and we will do a RGA and take the 3032AST’s back.

 

4. Some customers have a remedy that says Suburban will replace the cooktop free of charge with a new unit.

a. This remedy is incorrect. See Publication 573 NHTSA Campaign Number: 23E-002

 

5. Is 3031AST under the recall?

a. Yes – the replacement model is 3334AST

 

6. Is there a field fix remedy yet?

a. Yes – as of 2/28/23 we have a field remedy defined, Kits will be available to order and ship on 3/3/2023.

b. The kit number is 521337 for 3032AST

c. The kit number is 521340 for 3031AST

 


3032AST to 3333AST Field Conversion Work Instructions

2-3-23 Revision 1

**Throughout this process, this appliance should only be handled on a soft working surface to prevent damage to glass, main top, or other key components.**

 

Required Tools/Parts:

  • Soft working surface
  • Appropriate PPE (gloves, sleeves, safety glasses)
  • 3032AST drop-in cooktop
  • Small “3333AST” stickers (for heat shield)
  • #2 Phillips driver
  • Torque-controlled wrench (15mm or 16mm socket)
  • Needle nose pliers
  • Scissors
  • 3M Promoter or rubbing alcohol
  • 211747 VHB tape
  • 410349 Loctite 243
  • 064345 Regulator Bracket
  • 122292 Screws (#6 x 3/8 SS)

1. Uninstall unit and place on soft working surface.

2. Remove heat shield from bottom of appliance, setting heat shield, screws, and washers aside.

 

3. Apply adhesion promoter to bottom of main top and bottom of regulator support bracket or clean surfaces with a 50/50 mixture of rubbing alcohol and water.

4. Cut a 1” length of VHB tape (p/n 211747) and apply to bottom of regulator support bracket.

5. Peel red liner from tape.

 

6. Place regulator support bracket over regulator and align screw holes. (Ensure regulator mounting surface is parallel to bottom of main top.)

7. Attach bracket to regulator with two 122292 screws.

 

8. Apply force of 15 lbs. minimum to regulator bracket to firmly adhere VHB tape. (Minimum application temperature of 50°F. If necessary, heat tape and application surfaces prior to adhesion.)

9. Reinstall heat shield using retained screws and washers.

10. Cover “3032AST” with small “3333AST” sticker on large heat shield sticker. Clean oily residue as required for proper label adhesion.

 

11. Turn unit over and open glass lid.

12. Remove both burner control knobs.

13. Using a 15mm or 16mm socket (depending upon nut used) or needle nose pliers, remove top nut securing the left valve to the main top.

14. Tighten bottom nut.

15. Apply one drop of Loctite 243 to approximately 2nd valve thread.

 

16. Install top nut over bottom nut and torque to 20 in-lb.

 

17. Reinstall control knob.

 

18. Repeat steps 13 through 17 for the right control.

19. Visually inspect appliance (for smears, smudges, etc.) and clean as necessary.

20. Reinstall unit

 


521337/521340 SDS2 FIELD RECALL KIT
INSTRUCTION SHEET
FOR STOCK NUMBERS 3031AST AND 3032AST

This kit is for remedy of SDS2 cooktops under NHTSA recall 23E-002.
Warranty Flat Rate Labor Time 0.25 hrs.

KIT 521337 CONSISTS OF:
(1) BRACKET ASSEMBLY WITH TAPE, PN 064351
(2) SCREW, #6 X .375”, PN 122292
(1) STICKER, CSA SDS2 12VDC, PN 194462 (USED FOR REMEDY OF STOCK NUMBER 3032AST)
(1) LOCTITE 243 THREADLOCKER, PN 410350

KIT 521340 CONSISTS OF:
(1) BRACKET ASSEMBLY WITH TAPE, PN 064351
(2) SCREW, #6 X .375”, PN 122292
(1) STICKER, CSA SDS2 1.5VDC, PN 194460 (USED FOR REMEDY OF STOCK NUMBER 3031AST)
(1) LOCTITE 243 THREADLOCKER, PN 410350

 

ASSEMBLY INSTRUCTIONS:

1. Open glass lid.

2. Remove (4) black glass bumpers from each corner of the appliance.

 

3. Using a #2 Phillips screwdriver, loosen the screws under each bumper. This will retract the clamping mechanism that attaches the cooktop to the countertop..

 

4. Close glass lid.

5. Lift cooktop free of countertop and place bottom side up on soft working surface. If gas supply piping does not allow removal of cooktop from countertop without disconnecting appliance, shut off the gas supply at the source and disconnect the flare fitting at the appliance. The appliance can now be removed.

6. Remove heat shield from bottom of appliance, setting heat shield, screws, and washers aside.

 

7. Visually inspect the gas tubes connecting the gas valve to the burner orifice holder for any cracks, splits, etc. Ensure no gas lines are loose by gently pulling the tubing along its axis away from each brass nut. Use only two fingers. If any gas lines are loose, stop the recall kit process and request a replacement unit by contacting Suburban Tech Support at 574-247-9235, option 5.

8. Clean bottom of main top near regulator with a 50/50 mixture of rubbing alcohol and water.

 

9. Peel red liner from tape on bottom of bracket assembly (064351).

 

10. Place bracket assembly over regulator and align screw holes. (Ensure regulator mounting surface is parallel to bottom of main top.)

11. Attach bracket to regulator with two screws (122292).

 

12. Apply force of 15 lbs. minimum to regulator bracket to firmly adhere VHB tape. (Minimum application temperature of 50°F. If necessary, heat tape and application surfaces prior to adhesion.)

13. Reinstall heat shield using retained screws and washers.

14. Cover “3031AST” with sticker (194460) or cover “3032AST” with sticker (194462) on large heat shield sticker. Clean oily residue as required for proper label adhesion.

 

15. Turn unit over and open glass lid.

16. Remove both burner control knobs.

17. Using needle nose pliers, remove top nut securing the left valve to the main top. Your cooktop may have one or two nuts securing each gas valve.

 

18. Tighten bottom nut if your cooktop had two nuts on each gas valve.

19. Snip tip of Loctite 243 (410350) and apply one drop of threadlocker to approximately 2nd valve thread if each valve has two nuts. Apply one drop of threadlocker to approximately the 4th thread if each valve has only one nut.

 

20. Install top nut and torque to 20 in-lb.

 

21. Reinstall control knob.

 

22. Repeat steps 16 through 20 for the right control.

23. Reinstallation of unit is reverse of removal. (Steps 1-5) If the gas supply was disconnected, reconnect the gas supply piping and turn on the gas supply. Check for any leaks using an appropriate leak check procedure. See the Installation, Operation, and Maintenance Manual that came with the appliance for more information.

24. This completes the recall remedy steps.

 

PN: 206286
3-7-23

676 Broadway Street
Dayton, Tennessee 37321
423-775-2131
www.airxcel.com/suburban

 


Q&A for SDS2 3031/3032 Recall – active list of questions we are getting and answers, this will ensure we are communicating the same message to all customers.

1. What risk mitigation can our customers take if they have a vehicle impacted by this Suburban recall?

a. The customer should discontinue use of their cooktop.

2. Is there any risk of leak if the propane is on to the unit and the cooktop dials remain in the off position?

a. The recall does not impact this risk. If the knobs are off there should be no gas flowing through the regulator. There is always a risk in the connection of the supply line to the unit but this recall does not impact that risk.

3. What if I have units on my lot with and 3032AST’s?

a. You can order 3333AST’s to replace them and we will do a RGA and take the 3032AST’s back.

4. Some customers have a remedy that says Suburban will replace the cooktop free of charge with a new unit. a. This remedy is incorrect. See Publication 573 NHTSA Campaign Number: 23E-002

5. Is 3031AST under the recall?

a. Yes – the replacement model is 3334AST

6. Is there a field fix remedy yet?

a. Yes – as of 2/28/23 we have a field remedy defined, Kits will be available to order and ship on 3/3/2023.

b. The kit number is 521337 for 3032AST

c. The kit number is 521340 for 3031AST

 


SDS2 Chronology for New Recall Submission

9/24/2020 – Suburban was notified by an Escape RV customer of an issue with their SDS2 cooktop.

09/25/2020 – Suburban opens and investigation on the SDS2 cooktop.

11/11/2020 – Lab Analysis completed on failed cooktop burner tubes indicating hardening.

11/2020 – 8/2021 – Suburban communicates with Escape RV regarding the issue.

08/19/2021 – Suburban requests information on the usage of the SDS2 and the vehicle information the cooktops are installed in.

09/2021 – Information and Data is exchanged between Escape RV and Suburban.

10/1/2021 – Issue was forwarded to THOR Corporate for review.

10/7/2021 – THOR review complete issue determined to be isolated to Escape RV. No further actions taken due to lack of cooperation by Escape RV.

2/18/2022 – NHTSA ODI office notifies Suburban of 2 VOQs associated with the SDS2 cooktop recently filed.

3/4/2022 – Suburban forwards VOQs to THOR VSRC office for review. THOR requests any warranty claims data from Forest RivereBay logo, WinnebagoeBay logo, and AirstreameBay logo. Over the next two weeks all three confirmed no issues with the SDS2 Cooktop.

3/25/2022 – THOR VSRC responds to NHTSA inquiry from 2/18/2022.

4/15/2022 – Suburban attempts to reestablish communication with Escape regarding the issue.

4/23/2022 – Escape RV responds requesting more time in their review of the issue.

4/25/2022 – Suburban decides to initiate an equipment safety recall for the SDS2 cooktops used in Escape RVs based upon failure data.

10/25/2022 – Suburban conducted a field exam of Alto by Safari Condo trailer and observed burner tube failure mode of SDS2 with same issue as those seen in Escape RV

10/26/2022 – Suburban conducted a second field exam of Alto by Safari Condo trailer and observed burner tube failure mode of SDS2 with same issue as those seen in Escape RV

11/2/2022 – Field Inspections were reviewed at Suburban and an engineering investigation was reopened on the SDS2.

11/14/2022 – SDS2 Cooktops were started on shaker table at RV Products in Wichita, KS to try and reproduce the field failure of the burner tube. All lab testing failed to reproduce the field failure.

12/15/2022 – On or around 12 /15 /2022 Suburban received a field warranty claim from OEM AirstreameBay logo and observed burner tube failure mode of SDS2 with same issue as those seen in Escape RV

12/27/2022 – SDS2 Cooktops were retested after RV Products was able to increase the G force on their testing apparatus and cause a failure representative of the field failures.

1/3/2023 – Suburban confirmed a field failure of SDS2 on OEM ATC Gamechanger toy hauler that exhibited same pattern as those observed on Escape and Safari Condo.

1/10/2023 – Suburban decides to expand the recall of the SDS2 Cooktop to include all units produced to date. The beginning production date was 01/16/2018.

1/20/2023 – WinnebagoeBay logo notified Suburban of 5 additional claims for the SDS2 Cooktop.

 


1 Affected Product

Equipment

BRANDPART NO.PRODUCTION DATES
SUBURBAN2 BURNER DROP IN COOKTOP

 


14 Associated Documents

Defect Notice 573 Report

RCLRPT-23E002-1365.PDF 213.331KB

 


Recall Acknowledgement

RCAK-23E002-6612.pdf 646.553KB

 


Miscellaneous Document – SDS2 Chronology for New 23E002 Recall 012423

RMISC-23E002-9949.pdf 78.711KB

 


Recall 573 Report – 1/25/2023

RCLRPT-23E002-3195.PDF 213.421KB

 


Remedy Instructions and TSB

RCRIT-23E002-9981.pdf 719.378KB

 


Manufacturer Notices(to Dealers,etc)

RCMN-23E002-8636.pdf 89.92KB

 


Recall 573 Report – 2/6/2023

RCLRPT-23E002-2509.PDF 213.657KB

 


Recall 573 Report – 2/10/2023

RCLRPT-23E002-6801.PDF 213.775KB

 


Miscellaneous Document – 3032 Q&A 030123

RMISC-23E002-9361.pdf 145.025KB

 


Miscellaneous Document – 206286 SDS2 Field Recall Remedy Instruction Sheet 3-1-23

RMISC-23E002-2281.pdf 442.511KB

 


Miscellaneous Document – 206286 SDS2 Field Recall Remedy Instruction Sheet

RMISC-23E002-0572.pdf 444.013KB

 


Recall 573 Report – 4/3/2023

RCLRPT-23E002-2780.PDF 213.811KB

 


Recall 573 Report – 4/14/2023

RCLRPT-23E002-5061.PDF 213.821KB

 


Recall Quarterly Report #1, 2023-1

RCLQRT-23E002-8486.PDF 211.126KB

 


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