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Campaign 21V790 Posted October 11, 2021 245 units

2017-2020 Hme Fire Truck Recall 21V790: Fuel Rail Leak

RN
Reviewed by the RecallNotify editorial team
Published May 20, 2026

Recall 21V790 covers 245 2017-2020 Hme fire trucks with fuel rail leaks that raise fire risk. Repair is free at any franchised Hme dealer.

Hme is recalling 245 2017-2020 AF1, Pumper, Rescue, Tanker, and other fire trucks because a sealing washer in the high-pressure fuel rail assembly can seat incorrectly and let fuel leak. A fuel leak near an ignition source increases the risk of a fire, and Hme dealers will complete the repair free of charge.

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What's wrong?

The high pressure fuel rail on 2017-2020 Hme AF1, Pumper, Rescue, Tanker, 1871, TYPE-3, Wolf Sa Tanker, Sfo, Aerial, and Commfox fire trucks is part of the diesel fuel injection system. It stores diesel fuel under high pressure and feeds the injectors so the engine gets the fuel supply it needs while running.

On these trucks, the sealing washer in the fuel rail does not seat correctly in the pilot borehole. The bore that guides the washer is undersized on affected rails, so the washer lacks the clamping load needed to keep the joint sealed in service. That lets diesel fuel leak from the high pressure rail assembly.

The operator can see or smell diesel fuel before the repair is made. In some trucks, the check engine lamp illuminates. Treat either sign as evidence that the fuel rail needs dealer attention.

Who's affected?

Spans 10 Hme and Hme Ahrens-Fox fire apparatus models across the 2017-2020 model years, all tied to the same high pressure fuel rail assembly.

2018 Hme AF1 fuel system
2019 Hme AF1 fuel system
2020 Hme Ahrens-Fox Pumper fuel system
2018 Hme Ahrens-Fox Pumper fuel system
2017 Hme Ahrens-Fox Pumper fuel system
Units affected245
Field incidentsNHTSA has logged no field incidents to date.

A matching year and model does not guarantee inclusion. Check your VIN to confirm whether your specific truck is included.

What's the safety risk?

A diesel fuel leak near an ignition source increases the risk of a fire. If you see or smell diesel fuel, or the check engine lamp turns on, stop using the vehicle and call the dealer. Schedule the inspection and repair soon. Repair is free at any franchised Hme dealer.

What should I do?

  1. Check your VIN to confirm your 2017-2020 Hme AF1, Pumper, Rescue, Tanker, 1871, TYPE-3, Wolf Sa Tanker, Sfo, Aerial, or Commfox is included in this recall.
  2. Contact a franchised Hme dealer to schedule the free fuel-rail inspection and repair that fixes the high-pressure fuel rail leak.
  3. Reference recall number 21V790 when you call, and bring the recall notice if Hme mailed one.
  4. Avoid operating the truck around ignition sources until the fuel leak repair is complete.
  5. Call Hme customer service at 1-616-534-1463 with questions about scheduling or the repair path.

What happens at the repair

At the dealer, a Hme technician inspects the fuel rail threads and fuel lines for the leak condition tied to campaign 21V790. If the inspection shows the rail needs replacement, the technician replaces the rail. The inspection, replacement parts, and labor are free under the recall. Hme has a recall-specific reimbursement plan for units not covered by the manufacturer's limited warranty. If you already paid for this fuel rail repair, ask the service desk or Hme customer service how to submit repair documentation under that plan.

ReimbursementReimbursement available

Timeline

October 11, 2021 NHTSA published the recall
October 15, 2021 Dealer notification began
October 15, 2021 Dealer notification ended
October 15, 2021 Interim owner notification (was planned for this date)
January 20, 2022 Owner notification mailed

Frequently asked questions

What is recall 21V790?

Recall 21V790 covers 245 2017-2020 Hme fire trucks with a high-pressure fuel rail sealing issue. The sealing washer can fail to seat correctly, allowing fuel to leak. A fuel leak near an ignition source increases fire risk, and Hme dealers will inspect and replace the rail as needed for free.

What should I do if my 2017-2020 Hme AF1, Pumper, Rescue, Tanker, 1871, TYPE-3, Wolf Sa Tanker, Sfo, Aerial, or Commfox is on this recall?

Check your VIN to confirm your specific truck is included in recall 21V790. If it is, contact a franchised Hme dealer or Hme customer service at 1-616-534-1463 to arrange the fuel rail inspection. Reference recall 21V790 when you call. The repair is free.

Is the recall repair free?

Yes. Federal recall law requires the manufacturer to repair the defect at no cost. Hme dealers will inspect the rail threads and fuel lines, then replace the fuel rail as needed free of charge.

What is the safety risk?

The safety risk is fire. If the high-pressure fuel rail leaks and fuel reaches an ignition source, the vehicle has an increased fire risk. Until the inspection is complete, report fuel odor, visible leakage, or fuel-system concerns to the dealer before returning the truck to service.

When were owners notified about recall 21V790?

Owners were notified on January 20, 2021. If you bought the truck after that notice or never received paperwork, check your VIN and call Hme customer service at 1-616-534-1463 with recall 21V790.

More information

NHTSA campaign pagenhtsa.gov/vehicle-recalls/21V790000
Hme customer service1-616-534-1463
NHTSA recall #21V790
NHTSA recall # (full)21V790000

Source documents

This article is generated from NHTSA's primary recall filings and reviewed against the source on May 20, 2026. RecallNotify does not paraphrase NHTSA's consequence language; that text is reproduced as written above. Editorial standards →