Conversion Kit

CK19-16
Date

Expiration

Revision

Page

06.2019

N/A

0

1(17)

First Release

06-03-2019
ISRI SEAT BELT WITH SENSOR INSTALLATION (ACCESSORY KIT 23687694)

Prevost / Volvo Vehicles
DESCRIPTION
On the vehicles affected by this bulletin, a new seat belt buckle with warning sensor (telltale/buzzer) must
be installed on the driver’s seat following the instruction below. Accessory Kit # 23687694 must be run to
activate the system at the end of the procedure.

MODEL YEAR(S) AND VEHICLES INVOLVED
Model

VIN

H3-45 coaches
Model Year : 2017 - 2019

2PCH33490HC713599, 2PCH33493HC713600, 2PCH33497HC713602,
2PCH33490HC713604, 2PCH33494HC713606, 2PCH33498HC713608,
2PCH3349XHC713626, 2PCH33493HC713628, 2PCH33495HC713629,
2PCH33497HC713826, 2PCH33497HC713843, 2PCH33490HC713859,
2PCH33496HC713865, 2PCH33494JC713899, 2PCH33496JC713905,
2PCH33497JC713928, 2PCH33499JC713932, 2PCH33494JC713952,
2PCH33492JC713965, 2PCH33495JC713992, 2PCH33491JC710006,
2PCH33490JC710031, 2PCH33494JC710078, 2PCH33491KC710282,
2PCH33490KC710290, 2PCH33495KC710320, 2PCH33490KC710323,
2PCH33495KC710348, 2PCH33498KC710375, 2PCH33498KC710389,
2PCH33490KC710399, 2PCH33492KC710419, 2PCH33491KC710430,
2PCH33492KC710467, 2PCH33497KC710478

MATERIAL NEEDED
Order the following parts:
Part No.

Description

Qty

860332

SEAT BELT ASS W/SENSOR

1

562548

TERMINAL, MOLEX .093 SOCKET 20-14AWG

2

562549

CONNECTOR, MOLEX .093 2 SH

1

Equipment that may be required:
Part No.

Description

Laptop with PTT (Premium TechTool, latest version installed) & related cables.
NOTE
Material can be obtained through regular channels.

Writer: MG

Qty
1

Conversion Kit

CK19-16
Revision

Page

0

2(17)

PROCEDURE

DANGER
Park vehicle safely, apply parking brake, stop engine. Prior to working on the vehicle, set the ignition
switch to the OFF position and trip the main circuit breakers equipped with a trip button. On Commuter
type vehicles, set the battery master switch (master cut-out) to the OFF position.
Lock out & Tag out (LOTO) must be performed during set-up, maintenance or repair activities. Refer to
your local procedure for detailed information regarding the control of hazardous energy.

1. Remove seat base (cushion) from the seat.
-

Lift-up center lever and slide seat base (cushion) to the foremost position.

-

Remove handle from seat base (remove two mounting screws).

-

Hold center lever in upper position and push it sideward (left) to disengage it.

-

Make sure the seat base is at its full forward position and lift it up to free it from the seat.

Writer:

MG

Conversion Kit

CK19-16
Revision

Page

0

3(17)

2. Remove seat belt from the seat.
-

Unscrew the belt lower mount Torx screw (lift the backrest adjustment lever to uncover the
screw).

-

Remove both seat armrests.

-

Disengage J hooks and cut the cable ties holding together the lower edges of the backrest
seat cover.

Writer:

MG

Conversion Kit

CK19-16
Revision

Page

0

4(17)

-

Remove the backrest seat cover (unhook the side and center Velcro’s).

-

Pass the belt and belt buckle through the seat cover opening.

-

Unscrew the belt upper mount (special Torx screw with shoulder).

-

Remove the cardboard covering at the back of the seat backrest and pass the belt and buckle
through the seat opening.

Writer:

MG

Conversion Kit

CK19-16
Revision

Page

0

5(17)

-

Remove the belt mechanism plastic cover at the back of the seat (remove the 4 trim clips by
pushing out the center pin).

-

Disengage the sliding rail clip at the back of the seat to free the belt from the rail (press one of
the pin and slide clip up or down).

-

Unscrew the seat belt mechanism from the back of the seat (Torx screw).

Writer:

MG

Conversion Kit

CK19-16
Revision

Page

0

6(17)

3. Remove seat buckle from the seat base.
-

Unscrew the buckle dust cover (a small # 6 Torx screwdriver is required).

-

Detach the side plastic cover to access the buckle hold down Torx screw.

-

Remove the buckle and dust cover.

Writer:

MG

Conversion Kit

CK19-16
Revision

Page

0

7(17)

4. Install new seat buckle.
-

Pass the buckle end and harness through the dust cover (it is not be possible to install the dust
cover with the buckle already secured to the seat).

-

Pass the new buckle harness through the air supply line opening at the back of the seat.

-

Secure the new buckle to the seat using one of the new supplied Torx screw (make sure the
locating pin is engaged). Apply medium strength (blue) thread locker to the screw threads
TORQUE: 35 Nm (26 lb-ft).

-

Reattach the side plastic cover and re-install the dust cover.

Writer:

MG

Conversion Kit

CK19-16
Revision

Page