NHTSA ID Number: 10199972
Manufacturer Communication Number: IS-19912C
TSB/Document Date: 2021-08-05
Summary
ELECTRIC FAN DRIVE COOLING SYSTEM CONVERSION WITH DELCO REMY ALTERNATOR
IS-19912C
Instruction Sheet
ELECTRIC FAN DRIVE COOLING SYSTEM CONVERSION WITH DELCO
REMY ALTERNATOR
X3 coaches (2PCG…), X3 VIP with big A/C system (2PCB…, 2PCC…) US10 to GHG17
(B-5002 to H-6179)
REVISION: C
July 05-21
THIS DOCUMENT SUPERSEDES PREVIOUS VERSION.
Fan drive power cable 069245 replaced by 0610563
REVISION: B
THIS DOCUMENT SUPERSEDES PREVIOUS VERSION.
June 17-20
Parts obsolete: 050303, 391028, 562112
Replaced by:
830165 24V RED TELLTALE LIGHT MODULE
381594 BRACKET, TELLTALE
561540 TAB TERMINAL, ST,16-14,1/4 INS
QTY: 1x
QTY:1x
QTY: 2x
REVISION: A
THIS DOCUMENT SUPERSEDES PREVIOUS VERSION.
Jan 24-20
Mention added stating to disable “Prime”
Parts added in the kit:
053662 TURBO DIFFUSER PIPE
21096684 GASKET, TURBO OUTLET
20592787 CLAMP, DIFFUSER V-BAND DIA.
506080 BELT, DRIVE POLY V 8PK1575
QTY: 1x
QTY:1x
QTY:1x
QTY: 2x
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.
Recommended Alternator Conversion Kits
Take note that you can install a Delco Remy 55SI 24V-250A alternator on the engine curbside using one
of the follow recommended installation kit:
Kit:
IS19913
Applicable to: X3 Series, US10
Kit:
IS19909
Applicable to: X3 Series, from E-5459
EL
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IS-19912C
Page 2 / 91
MATERIAL
Kit IS19912 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
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IS-19912C
Page 3 / 91
MECHANICAL
012349
IDLER PULLEY
1
012941
PULLEY, DRIVE 10 RIBS
1
010090
L.H. ENGINE MOUNT
1
011213
SUPPORT, IDLER + TENSIONER
1
EL
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069893
PULLEY, DELCO REMY ALTERNATOR 10PK 69
DOB
453076
CAP, DUST
506067
1x BELT 10PK1703 ARAMIDE
1x BELT 10PK1703 ARAMIDE (for your spare
1
1
2
kit)
506080
1x BELT, DRIVE POLY V 8PK1575
1x BELT, DRIVE POLY V 8PK1575 (for your spare
kit)
510991
TENSIONER, BELT
560720
DELCO REMY ALTERNATOR 55 SI 24 V-250A
2
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
EL
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052889
HOSE, SILICONE 2 1/2" ID
1
Location : coolant pipes
053617
HOSE, SILICONE
3
Location : coolant pipes
CLAMPS+ SEALS
992081
HOSE CLAMP CT CAILLAU 12-22
4
Location : coolant filter hoses
992086
HOSE CLAMP CT CAILLAU
2
Location :
992089
HOSE CLAMP CT CAILLAU 60 mm-80 mm
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
EL
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21096684
GASKET, TURBO OUTLET
Location: Turbo to diffuser pipe connection
21490616
CLAMPS, SPRING LOAD - CHARGE AIR
1
8
Location: CAC outlet & inlet
21490630
CLAMP, SPRING LOAD - CHARGE AIR
4
Location: turbo outlet & engine intake
SUPPORTS/BRACKETS
1
050265
050351
UPPER RADIATOR SUPPORT X3
053040
SUPPORT, COOLANT SURGE TANK
1
053043
SUPPORT, I/O MODULE
1
069890
LH LOWER ALTERNATOR SUPPORT
1
069891
LH UPPER ALTERNATOR SUPPORT
1
381594
U-SHAPED BRACKET, ALTERNATOR TELLTALE
1
21185073
MOUNT, ANTI-VIBRATION
1
1
MISC.
010111
DECAL, BELT ROUTING
069205
DECAL, WARNING
506025
RUBBER EXTRUSION, BLACK
EL
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1
2
8 ft
IS-19912C
Page 7 / 91
1
380360
GROUND STUD
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
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
EL
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TSB/Document ID: IS-19912C
Replacement Service Bulletin Number:
MFR Communication Date: 2021-07-05
MFR Internal Campaign ID/Software Version:
Communication Type: Service Bulletin/Repair Instructions
NHTSA Components: POWER TRAIN
MFR Component System:
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