S7643

Service Campaign S7643
April 2022
Steering Shaft Inspection
Service Category Service
Section Function Group 641
Technician Skill Level B
Market North America
Applicability
MACK
Years
2022
Models
LR
Introduction
Mack requires an inspection of the steering shafts due to a quality action. The finding of the
inspection must be reported.
Production Change Information
This bulletin applies to vehicles built within the specified production changes below.
Brand
Engine
Emission Level
Starting Build Date
Ending Build Date
EM-USA17 & 21
17-August-2021
26-August-2021
Mack
CU9, MP7,
Warranty Information
This repair is covered by an authorized Service Program. Reimbursement is
obtained through the normal claim handling process.
Claim Type (used only when uploading from the Dealer Bus. Sys.)
B
Main Labor Code
Description
1720-16-09-01
Campaign, General 0.1 (0.1 x 10)
Causal Part
SCC Authorization
Code
Expiration Date
Hours
84732720
S7643
April 31, 2023
1.0
Service Campaign S7643
April 2022
Steering Shaft Inspection
Parts Information
N/A
Required Tools & Equipment
N/A
Calibration Information
N/A
LR Models – Inspection Procedure
1.
2.
3.
4.
Secure vehicle for service.
Position drive wheels in the straight-ahead position.
Disconnect Batteries.
Remove both right and left side grab handles and A-pillar panels.
5. Remove both right and left side upper dash bezel.
Service Campaign S7643
April 2022
Steering Shaft Inspection
6. Remove the mounting hardware and dash cover.
Service Campaign S7643
April 2022
Steering Shaft Inspection
7. Cut the ties holding the protective sleeve covering the joint. Pull back the protective
sleeve to gain access to the shaft yokes.
8. Inspect all three steering shaft connections and mounting hardware. Ensure the shaft is
fully splined and properly retained.
Service Campaign S7643
April 2022
Steering Shaft Inspection
9. Ensure all shaft hardware is marked with torque marking paste.
a. For every vehicle inspected, the below items are required to be Emailed to:
[email protected]
i. VIN of the vehicle
ii. Pictures of all three steering shaft connections
iii. Mileage/hours of the vehicle
iv. Contact information for service personal
b. If steering shaft connections are found to be incorrect, send an email with
attachments and await farther instructions from the reporting email.
c. If steering shafts connections are fault free, reassemble the vehicle in reverse
order and release to customer.