NHTSA ID Number: 10045699
Manufacturer Communication Number: SP-12-23
TSB/Document Date: 2012-09-13
Summary
PREVOST
: CORRECTIVE MEASURE FOR THE EGR VALVE IS NECESSARY BECAUSE OF THE UNNECESSARY PRESENCE OF O-RINGS, WHICH MAY PREVENT FREE VALVE ACTUATION. EGR VALVE CAN BE REPLACED WITH LATEST VERSION. MODELS 2012-13 H3-41, H3-H45 COACHES, H3-45 VIP MOTORHOMES, X3-45 COACHES, XLII SHELLS, X3-45 VIP MOTORHOMES. *PE
Reinstall ABS fuse #23.
Prior plugging the AFSS extinguisher cartridge valve electrical connector L282A, start the engine
and make sure that the fire extinguisher hasn’t been triggered during the DYNO test because of a
overheat condition. If this is the case, a fire “alarm” lamp and an audio alarm activate. The engine
will stop after a delay of 15 seconds. You must have a new linear thermal detector installed before
(LTD) connecting the extinguisher cartridge valve. Reset the system (refer to Kidde’s
Special Bulletin SP - [Diffusé] No. Révision: 4 - Date de diffusion: 2011-06-22 15:28:22
Special Bulletin
SP12-23
Date
Expiration
Release
Page
08.2012
08.2014
1
7(10)
OPERATION & MAINTENANCE MANUAL FOR FIRE PROTECTION SYSTEM AS INSTALLED
ON PREVOST H345 & EPA10 VEHICLES)
Make sure dynamometer chains holding vehicle in place did not make scratches on paint. In case,
please make touch-ups.
Verify plastic connectors and plastic hoses near urea injector to make sure it is not melted.
Verify there is no coolant spill.
If you see a spill, please get back to us with few comments (quantity lost, coolant level
change).
And also tell us if this vehicle has a stainless steel surge tank (grey), or an aluminum tank
(black paint).
TECHNICAL DETAILS TABLE
RAR 3.91 - Target range in shaded area (approx. 1200 rpm, maximum torque, minimum rpm range)
RAR 3.58 - Target range in shaded area (approx. 1200 rpm, maximum torque, minimum rpm range)
Special Bulletin SP - [Diffusé] No. Révision: 4 - Date de diffusion: 2011-06-22 15:28:22
Special Bulletin
SP12-23
Date
Expiration
Release
Page
08.2012
08.2014
1
8(10)
Special Bulletin SP - [Diffusé] No. Révision: 4 - Date de diffusion: 2011-06-22 15:28:22
Special Bulletin
SP12-23
Date
Expiration
Release
Page
08.2012
08.2014
1
9(10)
ANCHOR POINTS ON THE STRUCTURE FOR DYNO TESTING
X3 MODEL
Use the holes at the bottom of 3x9 inches rear
sub frame tube to bolt or hook the chain. Use at
least grade 8 bolts, ¾ inch diameter or M20.
Do not use the engine cradle to hold the
vehicle
H3 MODEL
Route the chain around the bottom structure in
front of the gussets and the transverse frame
tube.
Do not use the engine cradle to hold the
vehicle
Attached the chain both side of the vehicle to form
a “V” as long as possible.
Special Bulletin SP - [Diffusé] No. Révision: 4 - Date de diffusion: 2011-06-22 15:28:22
Special Bulletin
SP12-23
Date
Expiration
Release
Page
08.2012
08.2014
1
10(10)
PART 1 - ESTIMATED TIME
The time required to perform the replacement of the EGR valve is approximately:
-
4 hours.
-
8 hours when removal of the cooling pack is necessary.
This modification is covered by Prevost’s normal warranty. We will reimburse you the parts and labor
upon receipt of the replaced parts and a completed A.F.A. form on which you must specify as per "SP1223".
Return replaced EGR valve to Prevost with A.F.A. for full reimbursement.
PART 2 - ESTIMATED TIME
This modification is covered by Prevost’s normal warranty. We will reimburse you four (4.0) hours of labor
plus the dyno run cost upon receipt of a completed A.F.A. form on which you must specify as per "SP1223".
OTHER
S8905
VBC Bulletin
Fail Code
01-002
Defect Code
09
System Condition
B
Causal Part
21299107
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.
Special Bulletin SP - [Diffusé] No. Révision: 4 - Date de diffusion: 2011-06-22 15:28:22
WARRANTY
BULLETIN
Wb12-28
DATE : AUGUST 2012
SECTION :
05 - Cooling
EXPIRATION: AUGUST 2014
SUBJECT : ALUMINUM COOLANT SURGE TANK RETROFIT
APPLICATION
Model
X3-45 coaches
Model Year : 2011 - 2013
VIN
From 2PCY33498BC735003 up to 2PCBS3496DC735299 incl.
This bulletin does not necessarily apply to all the above-mentioned vehicles, some vehicles may have
been modified before delivery. The owners of the vehicles affected by this bulletin will be advised by a
letter indicating the Vehicle Identification Number (VIN) of each vehicle concerned.
DESCRIPTION
On the vehicles affected by this bulletin, an improved coolant surge tank is available. This new surge tank
offers a greater quantity of coolant between the low level sensor and the middle of sight glass level (5.2
quarts instead of 2.3 quarts). You will benefit from less frequent low coolant alarms.
MATERIAL
Order the following parts:
Part No.
Description
Qty
053597
DECAL
1
053641
COOLANT SURGE TANK, X3 SERIES ALUMINUM
1
053576
SUPPORT, COOLANT SURGE TANK (with clamp positioning tabs)
1
504775
T-BOLT CLAMP, DIA. 10-19"
2
NOTE
Material can be obtained through regular channels.
WB Prev - [Diffusé] No. Révision: 9 - Date de diffusion: 2011-06-22 15:17:24
Wb12-28
Page 2 / 6
PROCEDURE
DANGER
Park vehicle safely, apply parking brake, stop engine and set battery master switch(es) to the OFF
position prior to working on the vehicle.
REMOVAL OF THE ORIGINAL COOLANT SURGE COOLANT SURGE TANK
1. Cut the tie wrap holding the DEF lines to the coolant surge tank bracket.
2. Disconnect each hose connected to the coolant surge tank.
3. Place a clean rubber tube into the coolant surge tank. Using siphon effect, drain coolant surge tank.
4. Remove tie wraps and unplug low level sensor connector (5).
5. Loosen all fittings and sight glass.
6. Remove 3 bracket bolts (7) and remove coolant surge tank and bracket. Pull the coolant surge tank
through the SCR converter.
7. Turn the tank in order to have the level sensor at the top, in a vertical position and then unscrew it
from the coolant surge tank.
8. Remove sight glass and all fittings from coolant surge tank.
9. Loosen band clamps (10) and separate coolant surge tank from bracket. Return to Prevost for full
reimbursement.
NEW COOLANT SURGE COOLANT SURGE TANK ARRANGEMENT
WB Prev - [Diffusé] No. Révision: 9 - Date de diffusion: 2011-06-22 15:17:24
Wb12-28
Page 3 / 6
INSTALLATION OF NEW COOLANT SURGE COOLANT SURGE TANK
NOTE
Use Loctite 567 Thread Sealant on all NPT threads (Prevost #680098).
NOTE
There is no specific tightening torques except when specified.
1. Using Loctite Thread Sealant 567 on threads,
install level sensor in new coolant surge tank
with sensor in a vertical position at the top of
the tank. Tighten so that arrow on the side of
the sensor is pointing up. Leave no more than
two visible threads.
ARROW POINTING UP
NO MORE THAN 2 VISIBLE THREADS
2. Install all hose fittings and sight glass using Loctite 567 Thread Sealant.
NYCTA Commuter only
WB Prev - [Diffusé] No. Révision: 9 - Date de diffusion: 2011-06-22 15:17:24
Wb12-28
Page 4 / 6
or if applicable
3. Affix decal #053597 on surge tank. For
NYCTA Commuter coaches, affix decal
#053625 in addition.
4. Fix surge tank onto support. Tighten T-bolt
clamps to 50 lbf-in.
5. Install coolant surge tank and support assembly in engine compartment. Tighten bolts to 16 lbf-ft.
6. Install all hoses and tighten properly.
7. Secure two DEF lines to tank support with tie wrap.
8. Use the cap from the original surge coolant surge tank on new surge tank.
9. Fill coolant surge tank to midpoint of sight glass and pressure test system. Close the heating system
shut off valves to isolate this part of the system. Proceed to pressure test with 14 psi. Pressure
should remain the same. Test for 5 to 10 minutes.
10. Run the coach and check coolant level once again.
WB Prev - [Diffusé] No. Révision: 9 - Date de diffusion: 2011-06-22 15:17:24
Wb12-28
Page 5 / 6
NEW COOLANT SURGE COOLANT SURGE TANK INSTALLLED
NEW COOLANT SURGE
INSTALLED – ROAD SIDE
SURGE
TANK
NEW COOLANT SURGE
INSTALLED – CURB SIDE
SURGE
TANK
PARTS / WASTE DISPOSAL
Return replaced parts to Prevost with A.F.A. for full reimbursement.
WARRANTY
This modification is covered by Prevost’s normal warranty. We will reimburse you the parts and two (2.0)
hours of labor upon receipt of the replaced parts and a completed A.F.A. form on which you must specify
as per "Warranty Bulletin 12-28".
WB Prev - [Diffusé] No. Révision: 9 - Date de diffusion: 2011-06-22 15:17:24
Wb12-28
Page 6 / 6
OTHER
VBC Bulletin
n-a
Fail Code
05-07
Defect Code
09
System Condition
B
Causal Part
053602
WB Prev - [Diffusé] No. Révision: 9 - Date de diffusion: 2011-06-22 15:17:24
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TSB/Document ID: SP-12-23
Replacement Service Bulletin Number:
MFR Communication Date: 2012-08-01
MFR Internal Campaign ID/Software Version:
Communication Type: Service Bulletin/Repair Instructions
NHTSA Components: ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:GAS RECIRCULATION VALVE (EGR VALVE)
MFR Component System:
MFR Component Subsystem:
Previous TSB | Next TSB |
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