12-001: Watson & Chalin 20K AL2200 Lift Axle
Crossmember Fasteners
12/15/2025 ? Edit © Clone
12-001
Subject
Watson & Chalin 20K AL2200 Lift Axle Crossmember Fasteners
Whats New Abstract
Vehicles equipped with Watson & Chalin 20K AL2200 lift axles may have crossmember fasteners of incorrect
grade.
Condition
Chassis with incorrect grade lift axle crossmember fasteners will be inspected and fasteners will be replaced as
required.
Chassis Affected
44 US vehicle model year 2026 Model 567 / 579 chassis built from 09/24/2025 through 10/23/2025 equipped
with Watson & Chalin 20K AL2200 lift axle.
Action
Campaign
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.
2. In Service Management, select campaign 12-001 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 Management.
3. If you are not using Service Management to start repair orders, review SIR for Complete next to the 12-
001 campaign code prior to performing this repair.
4. Follow the procedures in the Attachments section to inspect the lift axle crossmember fasteners and
replace them as required.
Warranty
Starting on 12/15/2025 and for repairs completed by 01/01/2027, Peterbilt will pay for parts at dealer net plus
applicable mark-up and labor:
¢ 0.3 hours to inspect the lift axle crossmember fasteners with no repair required. Select Recommended
Repair Code 12-001A.
¢ 2.5 hours to inspect the lift axle crossmember fasteners, replace the fasteners with outboard mounted
air tank configuration, complete an air leak test per bulletin 13-065 and apply touch up paint. Select
Recommended Repair Code 12-001B.
° File an additional claim for extraordinary circumstances. A Recommended Repair for standard labor

must be filed first.
© File the claim within 14 days in accordance with the Warranty Policy.
Take off parts disposition:

PRWS CLAIM CODING
Campaign}12-001 |Campaign Field Repair
Code: Type
Claim Truck Repair Type |Proactive
Category:

Customer |172 Causal Code |45

Concern

Code

Corrective | 12 Responsibility |CampSupp

Action Code:

Code

Failure 012- Causal Part = |C74-

Location |002-001 1028A1111AAE10

Supplier |14069AA]SRT Code B25-43A

Code 0.3hrs
Bulletin 12-001
Watson & Chalin
20K AL2200 Lift
Axle
Crossmember
Fasteners
inspection per
bulletin
procedure.
B25-43B
2.5hrs
Bulletin 12-001
Watson & Chalin
20K AL2200 Lift
Axle
Crossmember
Fasteners
replacement per

bulletin
procedure.
Parts
An inspection of the lift axle crossmember fasteners is required. Order parts only if the fasteners are
required to be replaced per procedures in the Attachments section.
Quanti Part Descripti Stock
uantity Number escription Location
BOLT-HEX 5/8-
DSP /
18NFX1-1/2 GR8
HWwu04092 ZN/YEL OR eoealy,
EQUIVALENT ounce’
WASHER-ROUND DSP /
16 HWU05795] SAE 5/8 GR8 ZN/YEL | Locally
OR EQUIVALENT | Sourced
NUT-HEX 5/8-18NF
GR8 ZN/YEL DSP /
HWU05145 (PREVAILING Locally
TORQUE LOCKNUT) | Sourced
OR EQUIVALENT
Locally Locally
1 Sourced | SPRAY PAINT 150z | ody
THREAD/PIPE
1 Locally SEALANT Locally
Sourced 567 LOCTITEOR | Sourced
EQUIVALANT
Procedure
Follow your dealership’s safety procedures and precautions to ensure the vehicle is safely repaired and
maintained.
Please see the Attachments section below for procedures to inspect the lift axle crossmember fasteners and
replace them as required.
Attachments
12-001 Chassis List
12-001 Repair Procedure
12-001 Customer Letter

Kenworth Truck Company
KENWORTH Customer Service Departinent
C/O PACCAR Parts
A PACCAR COMPANY 750 Houser Way North
Renton, WA 98057
(425) 828-5888
[Date] ee
Subject: 12-001: Watson & Chalin 20K AL2200 Lift Axle Crossmember Fasteners ae
Expiration Date: 01/01/2027 ae Ph
FIELD SERVICE CAMPAIGN
This notice applies to your vehicle(s) with VIN(s) at the bottom or back of this page.
Dear Kenworth Customer,
Kenworth Truck Company has determined that certain T800, T880, W900, and W990 vehicles
built during 10/01/2025 through 10/28/2025 with Watson & Chalin 20K AL2200 lift axles may
have lift axle crossmember fasteners of incorrect grade.
What is the problem? Lift axle crossmember fasteners may be incorrect grade.
What will your dealer do? _ Inspect the lift axle crossmember fasteners and replace them as
required.
What should you do? Contact your dealer to schedule a repair appointment. This
service may require up to 3 hours of labor.
To locate your nearest dealer please scan the QR code at the top of this letter or use the Dealer
Locator at www.Kenworth.com. When scheduling this service, please refer to campaign 12-001:
Watson & Chalin 20K AL2200 Lift Axle Crossmember Fasteners and the VIN(s) listed in this
letter. There will be no charge to you if completed by 01/01/2027.
If you no longer own the vehicle(s), please send an email to servicebulletins@paccar.com with the
complete VIN(s) and the name and address of the new owner.
We appreciate your attention to this matter and value your loyalty to Kenworth and its dealer
network.
Sincerely,
Kenworth Customer Service