Recall 11V229 affects 16 2011 Kalyn flatbed trailers for slack adjusters that can crack and reduce braking. Repair is free at any franchised Kalyn dealer.
Kalyn recall 11V229 covers 16 model year 2011 flatbed trailers, including the Lbo, MHU100, and 12TSAF, equipped with Gunite automatic slack adjusters. The slack adjuster housing can crack under normal braking, causing loss of braking and increasing crash risk; the dealer repair will be free once available.
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What's wrong?
The automatic slack adjuster on the 2011 Kalyn Lbo, MHU100, 12TSAF, Kshrg, 12TSAB, and Kdp flatbed trailers is part of the air-brake system. Its job is to keep the brake linkage adjusted as the brake shoes wear, so the brakes respond with the correct amount of movement when air pressure applies them.
On the affected trailers, the Gunite slack adjuster housing was cast with incomplete iron bonding, described in the recall as incomplete "knitting" during casting. That weakens the housing. Under normal operating loads, the housing can break at the handle, leaving the adjuster damaged and the brake linkage no longer held as designed.
There is no warning sign before failure. Treat any broken or damaged slack adjuster handle as a brake-system problem and have the trailer inspected before it returns to service.
Who's affected?
Covers six Kalyn trailer models from the same model year, all tied to the same brake system component.
| 2011 Kalyn Lbo | brake system |
|---|---|
| 2011 Kalyn MHU100 | brake system |
| 2011 Kalyn 12TSAF | brake system |
| 2011 Kalyn Kshrg | brake system |
| 2011 Kalyn 12TSAB | brake system |
| 2011 Kalyn Kdp | brake system |
| Units affected | 16 |
A matching year and model does not confirm inclusion. Check your VIN to confirm whether this recall applies to your specific trailer.
What's the safety risk?
A cracked slack adjuster can cause loss of braking during normal braking and increase the risk of a crash. The recall does not list a warning sign, so schedule the repair and avoid extra trips until the trailer is checked. Repair will be free at any franchised Kalyn dealer once available.
What should I do?
- Check your VIN to confirm your 2011 Kalyn Lbo, MHU100, 12TSAF, Kshrg, 12TSAB, or Kdp trailer is included in this recall.
- Contact a franchised Kalyn dealer to ask about the free automatic slack-adjuster replacement.
- Reference recall number 11V229 when you call, and ask whether Gunite slack adjusters are installed on your trailer.
- Avoid towing or hauling heavy loads until the brake slack-adjuster repair is complete.
- Bring the recall notice if Kalyn mailed one, along with any brake-service paperwork for the trailer.
What happens at the repair
For affected trailers, Kalyn's repair is to replace the Gunite automatic slack adjusters covered by the recall. Once the dealer repair is available for your trailer, a Kalyn technician replaces the subject slack adjusters so the brake adjustment hardware has the correct housing integrity. The final dealer repair will be free once available. Parts and labor are covered under the recall. Because the reimbursement plan is not listed, this section does not add a separate reimbursement step.
Timeline
| March 30, 2011 | Owner notification mailed |
|---|---|
| April 12, 2011 | NHTSA published the recall |
Frequently asked questions
What is recall 11V229?
Recall 11V229 covers 16 2011 Kalyn Lbo, MHU100, 12TSAF, Kshrg, 12TSAB, and Kdp flatbed trailers equipped with Gunite automatic slack adjusters. The slack adjuster housing can crack under normal braking, causing loss of braking and increasing crash risk. Kalyn dealers replace the subject slack adjusters for free.
What should I do if my 2011 Kalyn Lbo, MHU100, 12TSAF, Kshrg, 12TSAB, or Kdp is on this recall?
Check your VIN to confirm your specific trailer is included in recall 11V229. If it is, contact a Kalyn dealer or Gunite at 1-855-857-8645 to schedule the slack adjuster replacement. Reference recall number 11V229 when you call. The repair is free.
Is the recall repair free?
Yes. Federal recall law requires manufacturers to repair recall defects at no cost, and Kalyn's remedy says dealers will replace the affected Gunite slack adjusters free of charge. The safety recall began on March 30, 2011.
What is the safety risk?
The safety risk is loss of braking. The recalled Gunite slack adjuster housing can crack under normal braking loads, which can reduce or remove braking force and increase crash risk. If your VIN is included, arrange the free slack adjuster replacement before putting the trailer back into service.
More information
| NHTSA campaign page | nhtsa.gov/vehicle-recalls/11V229000 |
|---|---|
| Kalyn customer service | 1-855-857-8645 |
| NHTSA recall # | 11V229 |
| NHTSA recall # (full) | 11V229000 |
Source documents
-
Download Recall Investigation Document (PDF) (PDF) - Download Owner Notification Letter (PDF)
- Download Defect / Noncompliance Notice (PDF) (PDF)
- Download Recall Acknowledgement (PDF)
This article is generated from NHTSA's primary recall filings and reviewed against the source on June 2, 2026. RecallNotify does not paraphrase NHTSA's consequence language; that text is reproduced as written above. Editorial standards →