NHTSA ID Number: 10231095
Manufacturer Communication Number: IS-19901E
TSB/Document Date: 2023-02-04
Summary
ELECTRIC FAN DRIVE COOLING SYSTEM CONVERSION WITH BOSCH
ALTERNATOR. REVISION: E Note added regarding power cable connection
Instruction Sheet
IS-19901E
ELECTRIC FAN DRIVE COOLING SYSTEM CONVERSION WITH BOSCH
ALTERNATOR
X3 coaches (2PCG…), X3 VIP with big A/C system (2PCB…, 2PCC…) US10 to GHG17
(B-5002 to H-6179)
REVISION: E
THIS DOCUMENT SUPERSEDES PREVIOUS VERSION.
Jan 17-23
Note added regarding power cable connection (step 136)
REVISION: D
THIS DOCUMENT SUPERSEDES PREVIOUS VERSION.
Four new holes drilled for cooling pack relocation
Sept 17-21
IMPORTANT NOTE
VEHICLES EQUIPPED WITH OPTIONAL PRIME ENERGY MANAGEMENT SYSTEM
TO PREVENT OVERLOADING THE L.H. SIDE ALTERNATOR, IT IS VERY IMPORTANT TO
DISABLE « PRIME » SYSTEM ON VEHICLES RECEIVING THIS CONVERSION. PLEASE
CONTACT YOUR NEAREST PREVOST SERVICE CENTER TO HAVE THE PRIME
SYSTEM DISABLED. A SOFTWARE TOOL IS NEEDED TO DO SO.
EL
QF7720959 rev 5>
MATERIAL
Kit IS19901 contains the following parts:
Qty
Part No.
DESCRIPTION
050343
FAN SUPPORT PANEL
1
050355
UPPER SHROUD TRANSITION
1
050359
LEFT SHROUD TRANSITION
1
050360
RIGHT SHROUD TRANSITION
1
050362
LOWER SHROUD TRANSITION
1
050363
LOWER LEFT SHROUD PANEL X3 US10+
1
050364
UPPER LEFT SHROUD PANEL & WURTH BOX
SUPPORT X3 US10+
1
050365
LOWER SHROUD PANEL X3 US10+
1
050366
UPPER SHROUD PANEL X3 US10+
1
050367
RIGHT SHROUD PANEL
1
050369
PULL ROD BOX
1
050380
UPPER LEFT SHROUD TRANSITION PANEL
1
050415
UPPER LEFT SHROUD PANEL
1
EL
QF7720959 rev 5>
IS-19901E
Page 3 / 89
MECHANICAL
012349
IDLER PULLEY
1
012941
PULLEY, DRIVE 10 RIBS
1
012942
L.H. ENGINE MOUNT
1
011213
SUPPORT, IDLER + TENSIONER
1
453076
CAP, DUST
506026
1x BELT, DRIVE POLY V 10PK1695
1
2
1x BELT, DRIVE POLY V 10PK1695 (for your spare
kit)
EL
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IS-19901E
Page 4 / 89
506080
1x BELT, DRIVE POLY V 8PK1575
2
1x BELT, DRIVE POLY V 8PK1575 (for your spare kit)
1
510991
TENSIONER, BELT
560748
BOSCH HD10PLBH ALTERNATOR 28V-150AMP
J180
0600265
PULLEY, ALTERNATOR 10PK, 73 DOB
1
1
PIPES
050308
CAC OUTLET PIPE X3 US10+
050309
RADIATOR INLET COOLANT PIPE X3 US10+
050328
CAC INLET PIPE X3 US10+
050331
RADIATOR OUTLET PIPE X3 US10+
053662
TURBO DIFFUSER PIPE, STRAIGHT
1
1
1
1
1
HOSES
052366
HOSE 3/8 ID X 61 in (1550 mm) LONG
030096
HOSE, FLEXIBLE - CHARGE AIR
1
2
Location: turbo outlet & engine intake
531469
HOSE, FLEXIBLE - CHARGE AIR
1
Location: CAC outlet
531471
HOSE, FLEXIBLE - CHARGE AIR
1
Location: CAC inlet
052889
HOSE, SILICONE 2 1/2" ID
1
Location : coolant pipes
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IS-19901E
Page 5 / 89
053617
3
HOSE, SILICONE
Location : coolant pipes
CLAMPS+ SEALS
992081
HOSE CLAMP CT CAILLAU 12-22
4
Location : coolant filter
992086
HOSE CLAMP CT CAILLAU
2
Location : radiator outlet pipe
992089
HOSE CLAMP CT CAILLAU 60mm-80mm
16
Location : coolant pipes
1675066
SEALING RING CHARGE AIR HOSE
2
Location: Engine intake elbow
20592783
CLAMP, CHARGE AIR HOSE D100 V-CLAMP DIA.
107.7
2
Location: Engine intake elbow
20592787
CLAMP, TURBO DIFFUSER PIPE V-BAND DIA. 81.7
1
Location: Turbo to diffuser pipe connection
21021850
CLAMP, EXHAUST PIPE V-BAND 5 INCHES
2
21095726
GASKET EXHAUST PIPE V-BAND JOINT, 5 INCHES
2
21096684
GASKET, TURBO OUTLET
Location: Turbo to diffuser pipe connection
1
EL
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IS-19901E
Page 6 / 89
21490616
CLAMPS, SPRING LOAD - CHARGE AIR
8
Location: CAC outlet & inlet
21490630
CLAMP, SPRING LOAD - CHARGE AIR
4
Location: turbo outlet & engine intake
SUPPORTS/BRACKETS
1
050265
050266
ALTERNATOR BATTERY CABLE SUPPORT
050351
UPPER RADIATOR SUPPORT X3
053040
SUPPORT, COOLANT SURGE TANK
1
053043
SUPPORT, I/O MODULE
1
060102
ALTERNATOR BRACKET, LOWER
381594
U-SHAPED BRACKET, ALTERNATOR TELLTALE
21185073
MOUNT, ANTI-VIBRATION
1
1
1
1
1
MISC.
010060
DECAL, BELT ROUTING
069205
DECAL, WARNING
506025
RUBBER EXTRUSION, BLACK
060297
STUD ADAPTER, ALTERNATOR M/F-M8
380360
GROUND STUD
EL
Writer:
1
2
8 ft
1
1
IS-19901E
Page 7 / 89
506040
TAPE, ADHESIVE AD1 EPDM CC GY 5/16"X3/4"X25'
21937327
FILTER, COOLANT
1
1
.
ELECTRICAL
1
012921
GROUND STUD
561540
TERMINAL, TAB
2
561608
TERMINAL, PIN
4
561610
CONNECTOR HOUSING, PED WEATHER PACK 4
WIRES
561783
CAVITY PLUG, CONNECTOR
563593
CONNECTOR, WITH END-OF-LINE 120 OHMS
RESISTOR
563750
FUSE HOLDER, AMG TYPE
564520
564612
CIRCUIT BREAKER BOX
565191
FAN, ELECTRIC
563533
HAND GUARD, FAN
EL
Writer:
1
4
2
1
1
1
8
8
IS-19901E
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TSB/Document ID: IS-19901E
Replacement Service Bulletin Number:
MFR Communication Date: 2023-01-17
MFR Internal Campaign ID/Software Version:
Communication Type: Service Bulletin/Repair Instructions
NHTSA Components: ENGINE AND ENGINE COOLING
MFR Component System:
MFR Component Subsystem:
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