S3174

Service Campaign S3174
May 2023
Transmission Bolt Replacement
Service Category Service
Section Function Group 431
Technician Skill Level A
Market North America
Applicability
VOLVO
Years
2019-2022
Models
VN
Introduction
Volvo has received reports of certain VN chassis, with Allison transmissions, containing possible
incorrect transmission mounting hardware. This hardware inconsistency could cause lack of force
needed to retain the transmission to the engine. This campaign will require removing the bell
housing flange screws one at a time and replacing the flange screws with new ones.
Production Change Information
This bulletin applies to vehicles built within the specified production changes below.
Brand
Volvo
Engine Emission Level
EM-USA17, EM-USA21
CU9
Starting Build Date
03-October-2018
Ending Build Date
28-June-2021
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
9000-06-09-01
Miscellaneous, Inspection
Causal Part
SCC Authorization
Code
Expiration Date
Hours
1.0
22936956
S3174
May 31, 2024
Service Campaign S3174
May 2023
Transmission Bolt Replacement
Parts Information
Part Numbers
Part Names
Quantity
984754
Flange Screw (M10X35)
12
Required Tools & Equipment
•
None
Calibration Information
•
None
Repair Procedure
1.
2.
3.
4.
5.
6.
7.
Secure truck for service.
Properly support transmission during procedure.
Remove one bell housing flange screw and spacer.
Inspect the flange screw for damage.
Inspect the flywheel housing threads for any damage.
If damage is found to the flywheel housing STOP THE REPAIR! and contact E-service.
Install a new flange screw part number 984754 without the spacer, torque to 51-61Nm
(38-45lbf-ft).
8. Continue above procedure (one at a time) on the remaining 11 bell housing flange
screws.
9. Once all bell housing flange screws have been replaced and torqued, the truck is ready
to be released for service.