TIF-134 – Incorrect Propane Line Fittings May Cause Fire – 2024 Tiffin Allegro Open Road & Allegro Bay Motorhomes

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OMB Control No.: 2127-0004
Part 573 Safety Recall Report 23V-804
The information contained in this report was submitted pursuant to 49 CFR §573
Manufacturer Name : Tiffin Motorhomes, Inc.
Submission Date : NOV 29, 2023
NHTSA Recall No. : 23V-804
Manufacturer Recall No. : TIF-134
Manufacturer Information :
Manufacturer Name : Tiffin Motorhomes, Inc.
Address : 105 2nd Street NW
PO Box 596 Red Bay AL 35582
Company phone : 999
Population :
Number of potentially involved : 7
Estimated percentage with defect : 100 %
Vehicle Information :
Vehicle 1 : 2024-2024 Tiffin Allegro Open Road
Vehicle Type : BUSES, MEDIUM & HEAVY VEHICLES
Body Style : OTHER
Power Train : GAS
Descriptive Information : In review of production records, it was determined that the scope begins with the
change of a 40-inch LPG hose to a 32-inch LPG hose. 7 units are involved, 6 Allegro
Open Roads and 1 Allegro Bay.
Production Dates : AUG 16, 2023 – OCT 12, 2023
VIN Range 1 : Begin : 1F66F5DN2N0A13631 End : 1F66F5DNXN0A18236 ✔ Not sequential
Vehicle 2 : 2024-2024 Tiffn Allegro Bay
Vehicle Type :
Body Style :
Power Train : NR
Descriptive Information : In review of production records, it was determined that the scope begins with the
change of a 40-inch LPG hose to a 32-inch LPG hose. 8 units are involved, 7 Allegro
Open Roads and 1 Allegro Bay.
Production Dates : AUG 16, 2023 – OCT 12, 2023
VIN Range 1 : Begin : 4UZADVFC6PCUW5345 End : 4UZADVFC6PCUW5345 Not sequential
Description of Defect :
Description of the Defect : On certain motorhomes equipped with an LPG system, the 32-inch hard line
LPG hose fittings do not match to the fittings on the hard pipe gas line which
could cause an LPG leak.
FMVSS 1 : NR
FMVSS 2 : NR
Part 573 Safety Recall Report 23V-804 Page 2
The information contained in this report was submitted pursuant to 49 CFR §573
Description of the Safety Risk : The defect could result in a fire or explosion, serious personal injury,
property damage or both.
Description of the Cause : Due to supply issues with 40-inch hoses, Tiffin changed to a 32-inch hose.
Tiffin found in final production testing of the LPG system that the new 32-inch
hose was occasionally leaking at the fitting between the crimp and the joint.
The decision was made to discontinue use of the 32-inch hose and return to
using the original 40-inch hoses which are being obtained from a new supplier.
Identification of Any Warning
that can Occur :
Owners may be alerted by the smell of LPG or hear the propane/CO2 alarm
alerting.
Involved Components :
Component Name 1 : 32-inch hard line LPG hose
Component Description : 32-inch hard line LPG hose
Component Part Number : 5019463
Supplier Identification :
Component Manufacturer
Name : NR
Address : NR
NR
Country : NR
Chronology :
10/23/2023 the issue was brought before the safety committee. Final finish LPG checks had found 3 of the 32-
inch hard line hoses that connect the LPG system from the regulator to the hard pipe gas line going into the
motorhome were leaking between the crimp and joint. Tiffin had made the decision to swap to a 32-inch line
due to supply issues. At that time, the hose had been installed on 40 coaches, 8 of which had shipped. 7 units
are in the US and 1 is in Canada. After leaks were found on the 3rd hose, production made the decision to swap
back to the 40-inch hose that had previously been used in production and the 32 units remaining at Tiffin had
the 32-inch hose replaced with the 40-inch hose before shipping. An investigation began as to the cause of the
leak, and it was determined that the fitting on the 32-inch hose did not fully match to the hard pipe gas line.
11/28/2023 the safety committee voted to issue a safety recall for the 8 units that had shipped.
Part 573 Safety Recall Report 23V-804 Page 3
The information contained in this report was submitted pursuant to 49 CFR §573
Description of Remedy :
Description of Remedy Program : Tiffin Motorhomes will replace the 32-inch hose with a 40-inch hose at no
charge to the owner. There is no plan for reimbursement since any issues
with the LPG system that may occur will be covered under the original 12-
month warranty of the motorhome.
How Remedy Component Differs
from Recalled Component :
The remedy component measures 40 inches and the recalled component
measures 32 inches.
Identify How/When Recall Condition
was Corrected in Production :
An engineering change notification dated 10/13/2023 was issued to begin
using the 40-inch hose in production.
Recall Schedule :
Description of Recall Schedule : At this time, 2 units are with retail owners and 5 units are located at
dealerships. All dealers and retail owners with involved units have been
contacted by phone and informed of the recall. Parts are being expedited
so that all stock and retail owned units will be repaired as soon as
possible. Tiffin Motorhomes should have all units repaired within the
next 60 days but if not, notifications will be mailed to all owners and
dealers that have an involved unit.
Planned Dealer Notification Date : JAN 28, 2024 – JAN 28, 2024
Planned Owner Notification Date : JAN 28, 2024 – JAN 28, 2024
* NR – Not Reported

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