CK19-16

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
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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

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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.
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MG

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

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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

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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

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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

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5. Install new seat belt and mechanism.
-
Secure the new belt mechanism to the base of the seat (Apply medium strength (blue) thread
locker to the screw threads but hand tight only, use new supplied Torx screw).
NOTE
The new seat belt mechanism does not have a locating tab.
-
Position the belt in the sliding rail and reinstall the rail clip.
-
Pass the belt end and belt buckle through seat and seat cover opening.
-
Secure the top part of the belt at the opening in the backrest. Use the supplied special Torx
screw with shoulder. Apply medium strength (blue) thread locker to the screw threads.
TORQUE: 35 Nm (26 lb-ft).
-
Secure the lower part of the belt to the seat (behind the adjustment lever). Center the belt end
in the cover opening and tighten. Apply medium strength (blue) thread locker to the screw
threads TORQUE: 35 Nm (26 lb-ft).
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MG

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Make sure that the belt is centered in the top part of the sliding rail and that there is no belt to
rail contact at the lower part of the rail. Adjust the angle of the seat belt mechanism as
required.
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-
When correctly positioned, tighten the belt mechanism Torx hold down screw to its final torque
35 Nm (26 lb-ft).
-
Re-install the cardboard at the back of the seat (use masking tape to hold in place).
-
Slide back the seat cover over the backrest, hook the side and center Velcro’s.
-
Secure the seat cover at the bottom of the backrest using cable ties. Re-attach J-hooks on both
sides.
-
Re-install both armrests. Apply medium strength (blue) thread locker to the screw threads
TORQUE: 22 Nm (16 lb-ft).
-
Make sure the belt is operating properly (moving & retracting freely). Adjust the mechanism
angle as required to ensure proper operation and reinstall the belt mechanism cover.
Writer:
MG

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6. Connect the buckle harness to the vehicle (vehicles with connector under the seat).
NOTE
Some vehicle may already be equipped with a belt buckle
connector located under the seat base.
If present, the connector will be coming from the vehicle front
compartment (air supply hole in the floor under the seat).The
connector is sometime secured to the seat base frame as shown.
A jumper wire is connected to the end of it to simulate a fastened
belt and prevent the illumination of the dashboard belt telltale
light.
-
Locate the belt buckle connector under the seat (typical location shown, actual location may vary).
-
Disconnect the jumper wire at the end of the connector.
-
Cut the end of the new belt buckle harness previously installed and shorten harness to the
required length.
-
Splice the ends of both buckle harness wire and crimp the two supplied 562548 terminals.
-
Insert the terminals in the supplied 562549 connector.
-
Connect the belt buckle harness to the connector under the seat.
Writer:
MG

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7. Connect the buckle harness to the vehicle (vehicles without connector under the seat).
-
Route the buckle harness down to the air supply hose opening in the vehicle floor (secure to seat
frame with cable ties).
NOTE
Make sure that the harness will not get pinched by internal seat components (during seat adjustment or
seat movement).
-
Pass the harness inside the vehicle front compartment (through air supply opening).
-
Inside the front compartment, connect the harness to the C.SE51 connector.
-
Secure the harness with cable ties inside the compartment.
Writer:
MG

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PROGRAMMING STEPS:
1. In Premium TechTool, select PROGRAM tab. In PROGRAM tab, select operation 1700-22-03-06
Accessory Kit then clicks START.
2. Enter Accessory kit number 23687694 Click on PROGRAM button below and then follow the
instructions. The programming process will start
Writer:
MG

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PARTS / WASTE DISPOSAL
Discard waste according to applicable environmental regulations (Municipal/State[Prov.]/ Federal)
ESTIMATED TIME
The time required to perform this special bulletin is approximately 3.0 hours.
Access all our Service Bulletins on http://techpub.prevostcar.com/en/
or scan the QR-Code with your smart phone.
E-mail us at [email protected] and type “ADD” in the subject to
receive our warranty bulletins by e-mail.
Prevost engages in a continuous program of testing and evaluating to provide the best possible product. Prevost, however, is not
committed to, or liable for updating existing products.
Writer:
MG