Recall 20V637 affects 8 2020 Genie TZ-50 and TZ-34 boom lifts for loose slew bearing bolts. Repair is free through Genie technicians.
Genie is recalling 8 2020 TZ-50 and TZ-34 trailer mounted boom lifts because the recall concerns under-tightened bolts connecting the slew turntable bearing to the chassis. The safety risk is reduced lift stability and increased risk of personal injury, and Genie dealers will complete the free repair.
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What's wrong?
The slew turntable bearing on the 2020 Genie TZ-50 and TZ-34 trailer mounted boom lifts is the large rotating joint between the chassis and the boom structure. It lets the boom turn while the chassis stays planted. The bolts around that bearing clamp the bearing to the chassis, so the rotating assembly stays fixed to its base during operation.
On affected lifts, those bolts were not tightened to the required torque during assembly. The torque tool was not connected to the Andon system, and the torque data later showed errors for the joint. A bolt that starts below the required tightness has less clamping force, so vibration and normal lift loads can work against the joint instead of the chassis and bearing holding together as designed.
There is no warning sign before failure. An owner or operator should not expect a noise, light, or visible change before the bearing bolts lose the clamping force the lift depends on.
Who's affected?
Covers the TZ-50 and TZ-34 in the 2020 model year, with the same equipment component listed for each model.
| 2020 Genie TZ-50 | Equipment |
|---|---|
| 2020 Genie TZ-34 | Equipment |
| Units affected | 8 |
| Field incidents | NHTSA has logged no field incidents to date. |
A matching 2020 Genie model does not guarantee inclusion. Check your VIN to confirm whether your specific vehicle is included.
What's the safety risk?
A loose slew bearing can make the lift less stable and increase the risk of personal injury. Limit operation until the slew bearing bolts are tightened, and schedule the recall repair soon. Repair is free at any franchised Genie dealer.
What should I do?
- Check your VIN to confirm your 2020 Genie TZ-50 or TZ-34 lift is included in this recall.
- Contact Genie customer service at 1-800-536-1800 to schedule the free slew-bearing-bolt tightening that secures the turntable bearing to the chassis.
- Keep the lift out of service until Genie completes the repair.
- Bring the recall notice if Genie has mailed one. If not, reference recall number 20V637 when you call.
- Ask Genie whether recall Issue 240 applies if the lift has changed owners or no notice arrived.
What happens at the repair
Genie handles this repair as a technician service visit. A Genie technician properly tightens the slew bearing bolts that connect the turntable bearing to the chassis, torquing them to specification. The correction is free under the recall, with Genie doing the work directly. Genie is not offering reimbursement for this campaign because owners are not being asked to pay for the correction or arrange a paid repair before Genie completes the service.
| Reimbursement | No separate reimbursement |
|---|
Timeline
| October 15, 2020 | NHTSA published the recall |
|---|---|
| October 28, 2020 | Owner notification mailed |
Frequently asked questions
What is recall 20V637?
Recall 20V637 covers 8 2020 Genie TZ-50 and TZ-34 trailer-mounted boom lifts with slew turntable bearing bolts that need proper tightening. NHTSA lists the risk as reduced lift stability, which increases the risk of personal injury. Genie technicians will tighten the bolts for free.
What should I do if my 2020 Genie TZ-50 or TZ-34 is on this recall?
Check your VIN to confirm your specific boom lift is included in recall 20V637. If it is, contact Genie customer service at 1-800-536-1800 and reference recall Issue 240. Genie technicians will properly tighten the slew bearing bolts for free.
Is the recall repair free?
Yes. Federal recall law requires the manufacturer to correct the defect at no cost, and Genie says its technicians will properly tighten the slew bearing bolts free of charge. Have the VIN and recall Issue 240 ready when you contact Genie.
What is the safety risk for this Genie boom lift recall?
The safety risk is loss of lift stability from a loose slew turntable bearing. NHTSA campaign 20V637 says reduced stability increases the risk of personal injury. Keep the lift out of service until Genie confirms whether the VIN is included and completes the free bolt-tightening repair.
More information
| NHTSA campaign page | nhtsa.gov/vehicle-recalls/20V637000 |
|---|---|
| Genie customer service | 1-800-536-1800 |
| NHTSA recall # | 20V637 |
| NHTSA recall # (full) | 20V637000 |
Source documents
-
Download Misc. Document (PDF) - Download Recall Report (PDF)
- Download Quarterly Report (PDF)
- Download Recall Acknowledgement (PDF)
This article is generated from NHTSA's primary recall filings and reviewed against the source on May 23, 2026. RecallNotify does not paraphrase NHTSA's consequence language; that text is reproduced as written above. Editorial standards →