Service Campaign S7547

December 17, 2020

Inspection of pass through Collets
Service Category Brakes Pneumatic
Section Brakes
Technician Skill Level C
Applicability
VOLVO
Years
2021

Market North America

Models
VN,VAH,VHD

Introduction
On certain vehicles, the collets (internal jaws) for the brass fitting inserts used in the pneumatic
(air) pass-through plate may have been damaged during leak testing by the supplier, Norgren.
The potential consequence is the brass fitting may completely release the air line from the passthrough plate while under pressure. If this occurs on the park brake circuit, signal pressure that
holds the mechanical spring in the park brake chambers will be lost allowing the park brakes to
apply.
If the park brakes apply, the driver may lose control of the vehicle under certain conditions
increasing the risk of a vehicle crash.

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
EOBD 19
08-July-20
08-Dec-20
Volvo
D11, D13

Service Campaign S7547

December 17, 2020

Inspection of pass through Collets
Warranty Information
This repair may be eligible for reimbursement if a product failure was
experienced with in 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.)
B
Primary Labor
Description
Hours
Code
1720-16-09-01

Inspection of pass thru plate

0.8

1720-16-09-01

Replacement of defective collet if found (per
collet)

0.1

Causal Part

85108475, 85108477

SCC Authorization
Code

S7547

Parts Information
For all parts orders, it is required to email SCcampaign@volvo.com. The body of the email must
include:
 VIN being repaired
 Dealer ID number
 PO number
 Parts needed
A response will be provided within 24hrs.
Part Names
1/4 COMPACT COLLET
3/8 COMPACT COLLET
1/4 PRESS IN FITTING SILICONE ORING
3/8 PRESS IN FITTING SILICONE ORING

Part Numbers

Quantity

85108475

As Needed

85108477

As Needed

85146177

As Needed

85146178

As Needed

Required Tools & Equipment





Pliers
Pick
Flat head Screwdriver
Torque Wrench






T25 torx bit
12 mm socket
10mm socket
Ratchet

Service Campaign S7547

December 17, 2020

Inspection of pass through Collets
Inspection Procedure, Exterior side of pass through
1. Drain air tanks.

2. Open hood.
3. On each air hose at the pass through connection, one at a time, push in twice, and then pull out
firmly.

4.

If no fault found, exterior inspection is complete. If any hose comes free or is loose, proceed
with replacement of affected collet(s) on page 9.
5. Close hood, and proceed to next step.

Service Campaign S7547

December 17, 2020

Inspection of pass through Collets
Inspection Procedure, Interior side of the pass through
1. Remove grab handle fasteners. Plastic cap will have to be removed to access top grab handle
fastener. Remove grab handle.

2. Remove fastener holding panel in place

Service Campaign S7547

December 17, 2020

Inspection of pass through Collets
3. Pull floor mat back to expose fastener. Remove fastener. Remove panel exposing interior side
of pass through.

4. Pull down on air vent, moving it out of the way to allow for air hose inspection.

5. On each air hose at the pass through connection, one at a time, push in twice, and then pull
out firmly.

Service Campaign S7547

December 17, 2020

Inspection of pass through Collets
6. If no fault found, inspection is complete. If any hose comes free or is loose, proceed with
replacement of affected collet(s) on page 9.
7. Reinstall air vent.

8. Install panel and fastener.

Service Campaign S7547

December 17, 2020

Inspection of pass through Collets
9. Install fastener

10. Install grab handle, torque fasteners to 18 +/- 3 foot pounds.

Service Campaign S7547

December 17, 2020

Inspection of pass through Collets
11. Install plug.

12. Interior inspection complete.

Service Campaign S7547

December 17, 2020

Inspection of pass through Collets
Collet Replacement Method
1. Remove collet from port in pass through using a pair of pliers.

2. Remove the o-ring from the port, and discard.
NOTE: New O-ring is required.

Service Campaign S7547

December 17, 2020

Inspection of pass through Collets
3. Install a new o-ring in the port.

4. Install the new collet in the port.

Service Campaign S7547

December 17, 2020

Inspection of pass through Collets
5. Insert the airline into the port, repeat two firm pushes and one pull on affected airline/collet to
ensure the collet has been repaired.

6. Repair complete, repeat on all loose or free air hoses.