NHTSA ID Number: 11030929
Manufacturer Communication Number: 25PACH
TSB/Document Date: 2026-04-07
Summary
25PACH Safety Recall Update - Parts Breakdown by Chassis List has been updated with additional parts for chassis 785289, 785290, 794064, 795896, and 795740. The 25PACH: 20k Steerable Pusher: Replace Air Tank on Top of Battery Box procedure has also been updated with additional steps to remove and replace the air tank brackets.
3/17/26, 1:33 PM Federal Recall Bulletin
25PACH: 20k Steerable Pusher Insufficient Air Volume
Non-Compliance with FMVSS/CMVSS 121
Number
25PACH / NHTSA Number: 25V795 / Transport Canada Number: 2025-633
Description
20k Steerable Pusher Insufficient Air Volume Non-Compliance with FMVSS/CMVSS 121
Date
12/18/2025
What's New
The 25PACH Parts Breakdown by Chassis List has been updated with additional parts for chassis
785289, 785290, 794064, 795896, and 795740. The 25PACH: 20k Steerable Pusher: Replace Air Tank
on Top of Battery Box procedure has also been updated with additional steps to remove and replace the
air tank brackets.
Introduction
Certain tractors with 20k steerable pusher axles have insufficient air system volume to meet
FMVSS/CMVSS 121 requirements.
Situation
63 (62 US and 1 Canada) vehicle model year 2026 Model 567 and 589 8x4 tractors built from 02/11/2025
through 09/10/2025 with 20k steerable pusher axles and insufficient air volume per chassis build records
Resolution
Service all chassis affected that enter your dealership, even if the customer has no issue with the
chassis.
1. Review the attached chassis list for your dealer code and schedule your customer(s) for service if
their chassis is on the list and parts are confirmed to be available.
2. In Service Management, select campaign 25PACH to add it to the case. If the unit is released back
into service without performing the repair, make sure to also release the campaign in Service
https://paccarnet.sharepoint.com/sitepages/wtyfedrecallbltndetail.aspx?ctx=eyJ3ZWJVcmwiOiJodHRwezovL3BhY2Nhcem5ldC5zaGFyZxXBvaW50LmN... 1/6
3/17/26, 1:33 PM Federal Recall Bulletin
Management.
3. If you are not using Service Management to start repair orders, review SIR for Complete next to the
25PACH campaign code prior to performing this repair.
4. Follow the procedures in the Links section to correct the air system volume non-compliance.
Federal Law
It is a violation of Federal law for a dealer to sell or lease new vehicles covered by this recall until the defect or
noncompliance has been corrected.
Warranty
Starting on 12/18/2025, Peterbilt
will pay for parts at dealer net plus applicable mark-up and labor:
e File editable Recommended Repair Code 25PACH.
° The following items are required:
= Applicable parts and labor
= See the PRWS claim coding table for the editable SRT code that applies to the
repair procedure used.
= DAVIE4 Air Pressure Decay Test results
© Any labor in excess of 5 hours must have a detailed reason on the Non-Standard Time Labor
Worksheet found in the warranty procedure manual.
= You will need to download the Non-Standard Time Labor Worksheet by clicking on
File, Create a Copy, and Download a Copy.
e File an additional claim for extraordinary circumstances. A recommended repair for standard labor
must be filed first.
2/6
3/17/26, 1:33 PM
e File the claim within 14 days in accordance with the Warranty Policy.
Take-Off Parts Disposition:
e Destroy 30 days after claim is paid.
PRWS CLAIM CODING
Campaign
Code:
25PACH
Campaign
Type:
Safety
Recall
Claim
Category:
Truck
Repair Type:
Proactive
Customer
Concern
Code:
139
Causal Code:
A1
Corrective
Action
Code:
12
Responsibility
Code:
CAMP
Failure
Location:
013-
010-004
Causal Part:
G86-1151-
3B12R
Supplier
Code:
N/A
SRT Code:
SRT B25-
45A
(editable) —
Bulletin
25PACH
20k
Steerable
Pusher
Insufficient
Air Volume
— Adda
horizontally
jmounted
air tank
below the
frame rail
per bulletin
procedure.
SRT B25-
45B
(editable) —
Bulletin
25PACH
20k
Steerable
Pusher
Insufficient
Air Volume
—Adda
horizontally
Federal Recall Bulletin
3/6
3/17/26, 1:33 PM
|mounted
air tank
using
flange
brackets
per bulletin
procedure.
SRT B25-
45C
(editable) —
Bulletin
25PACH
20k
Steerable
Pusher
Insufficient
Air Volume
— Add an
air tank on
the inboard
side of the
battery box
per bulletin
procedure.
SRT B25-
45D
(editable) —
Bulletin
25PACH
20k
Steerable
Pusher
Insufficient
Air Volume
— Replace
two air
tanks
jmounted
under the
battery box
with larger
tanks per
bulletin
procedure.
SRT B25-
45E
(editable) —
Bulletin
Federal Recall Bulletin
4/6
3/17/26, 1:33 PM Federal Recall Bulletin
25PACH
20k
Steerable
Pusher
Insufficient
Air Volume
— Replace
one air
tank
jmounted
on top of
the battery
box witha
jlarger tank
per bulletin
procedure.
Procedure
Follow your dealership's safety procedures and precautions to ensure the vehicle is safely
repaired and maintained.
Please see the appropriate repair procedure in the Links section for instructions on adding and/or
replacing air tanks to correct the insufficient air system volume. Reference the 25PACH Parts Breakdown
https://paccarnet.sharepoint.com/sitepages/wtyfedrecallbltndetail.aspx?ctx=eyJ3ZWJVcmwiOiJodHRwezovL3BhY2Nhcem5ldC5zaGFyZxXBvaW50LmN... 5/6
3/17/26, 1:33 PM Federal Recall Bulletin
by Chassis List to determine which repair procedure is required for your chassis.
Parts
Parts are available from PACCAR Parts.
Refer to the 25PACH Parts Breakdown by Chassis List in the Links section to determine which parts to
order for the chassis you are working on.
The following parts should be sourced locally.
Part
Quantity Number
Description
Loctite 567
Thread
Sealant
6mL_ | Source
tube | Locally
As Source |Black Spray
Needed | Locally Paint
As Source
Needed | Locally Cable Ties
Links
CHASSIS LIST
25PACH PB Chassis List - Bulletin
PARTS BREAKDOWN BY CHASSIS LIST
25PACH Parts Breakdown by Chassis List
REPAIR PROCEDURES
Z25PACH: 20k Steerable Pusher: Add Air Tank to Inboard Side of Battery Box
25PACH: 20k Steerable Pusher: Add Horizontal Air Tank
25PACH: 20k Steerable Pusher: Add Air Tank with Horizontal Flange Brackets
25PACH: 20k Steerable Pusher: Replace Air Tank on Top of Battery Box
25PACH: 20k Steerable Pusher: Replace Two Air Tanks Under Battery Box
CUSTOMER LETTERS
25PACH PB Customer Letter Canada
25PACH PB Customer Letter US
25PACH PB Customer Letter Canada - French
Revision History
03/17/2026: The 25PACH Parts Breakdown by Chassis List and the 25PACH: 20k Steerable Pusher Air
Tank Replacement procedure have been updated with additional parts and steps.
If the PDF is very large, it may not load in the preview below.
Some older TSBs had multiple PDFs — visit the NHTSA Website to view all PDFs.
If the TSB PDF does not show, download or view it on the NHTSA Website.
Click on the (+) Plus Sign
Then Click on Associated Document(s)
Search NHTSA Database for Recalls
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View Latest Vehicle Investigations
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View Latest Vehicle Complaints
TSB/Document ID: 25PACH
Replacement Service Bulletin Number:
MFR Communication Date: 2026-03-18
MFR Internal Campaign ID/Software Version: 25PACH
Communication Type: Service Campaign
NHTSA Components: SERVICE BRAKES
MFR Component System:
MFR Component Subsystem:
Previous TSB | Next TSB |
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