FSB 371-046

Field Service Bulletin
Trucks
Volvo Trucks North America
Greensboro, NC USA
Date
4.2014
Group
No.
Release
371 046 01
Page
1(4)
Frame Rail Ground Stud
VAH, VHD, VN
FSB 371-046, Frame Rail Ground Stud
(April 2014)
On certain Volvo Trucks built from 01/01/2010 to 3/28/2014 the main ground stud, located on
the frame rail behind the battery box, may have improper torque. This improper torque may
have allowed corrosion inhibitor to get between the ring terminals which may cause multiple
Diagnostic Trouble Codes and/or intermittent issues.
To correct this problem, follow the procedure below:
Check
1 Secure the vehicle for service by parking it on a flat level surface, applying the parking
brake, chocking the rear wheel, and placing the transmission in neutral.
2 Remove driver side fairing, if applicable.
3 Disconnect all cables from the negative (ground) battery terminals to prevent personal
injury from electrical shock and prevent damage to electrical components.
4 Check torque of nut on ground stud.
* If ≥ 40 Nm (29.5 ft lb), No further action required. Proceed to step 5 of Repair B.
* If the nut is torqued to < 40 Nm (29.5 ft lb), proceed to repair section below.
5 If 3 or fewer terminals are present, go to Repair A.
6 If more than 3 terminals are present, go to Repair B.
Service personnel: Please circulate, read and initial
Service
Manager
Warranty
Administrator
PV729-FSB371-046_V
Workshop
Foreman
Service Technicians
USA63493
Volvo Trucks North America
Field Service Bulletin
Date
4.2014
Group
No.
Release
371
046
01
You must read and understand the precautions and guidelines in Service Information,
Function Group 30, "General Safety Practices, Electrical and Electronics" before
performing this procedure. If you are not properly trained and certified in this procedure,
ask your supervisor for training before you perform it.
Repair A
1 Remove the nut and cables from the ground stud.
2 Clean residual corrosion inhibitor and debris from all ring terminals and stud.
3 Reinstall the ring terminals and nut. Torque to 40 Nm ± 6 Nm (29.5 ± 4.5 ft lb).
4 Coat all connections with corrosion inhibitor or similar product.
5 Install all the previously removed cables to the negative (ground) battery terminals.
6 Install driver side fairing, if applicable.
Repair B
Required Parts
Quantity
Part Number
1
983715
1
21650178
Description
Nut ( two may be required depending on vehicle build)
Buss Bar
1 Remove the nut and cables from the ground stud.
2 Clean residual corrosion inhibitor and other debris from all ring terminals and studs.
Page
2(4)
Volvo Trucks North America
Field Service Bulletin
Date
4.2014
Group
No.
Release
371
046
01
3 Secure the cable at the frame rail ground stud.
Note: If more than 3 cables are located on this grounding point, use the 21650178 buss
bar to re-allocate the other cables for a more even distribution.
Note: Install the buss bar if needed over the largest cables and secure.
Tighten to 40 ± 6 Nm (29.5 ± 4.5 ft lb).
Note: Install the smaller cables on the buss bar stud and secure.
Tighten to 12 Nm (9 ft lb).
W3084050
1. Ground Stud
2. Buss Bar
3. Nut
4. Battery Cables
5. Fusible Link
6. Chassis Ground
Note: If a washer is present on ground stud, discard and do not reuse.
Note: If adding buss bar check ring terminals for corrosion inhibitor and clean as
necessary.
Page
3(4)
Volvo Trucks North America
Field Service Bulletin
Date
4.2014
Group
No.
Release
371
046
01
Page
4(4)
4 Coat all connections with corrosion inhibitor or similar product.
5 Install all the previously removed cables to the negative (ground) battery terminals.
6 Install driver side fairing, if applicable.
Reimbursement
This repair may be eligible for reimbursement if a product failure was experienced within time and mileage limits of
the applicable Warranty coverage. Reimbursement is obtained via the normal claim handling process.
Claim Type (used only when uploading from the Dealer Bus. Sys.)
W
Labor Code
Primary Labor Code
Check and Repair A
37126-0-01
0.3 hrs.
Primary Labor Code
Check and Repair B
37126-0-02
0.4 hrs.
Causal Part
983716
Volvo Trucks North America engages in a comprehensive program of testing and evaluating
to provide the best possible product. Volvo Trucks North America however, is not committed
to, or liable for updating existing vehicles.