NHTSA ID Number: 10153469
Manufacturer Communication Number: LI4546E
TSB/Document Date: 2019-02-19
Summary
To avoid the risk of air being trapped which could damage the EGR cooler.
L82K8G9775653
25
San Antonio Texas
LA22
447
555
L82K8H9775654
L82K0H9775762
109
San Antonio Texas
LA34
556
580
L82K0H9775857
L82K8H9775881
25
San Antonio Texas
LA35
581
691
L82KXH9775882
L82K8H9775993
111
San Antonio Texas
LB26
692
735
L82KXJ9776536
L82K6J9776579
44
San Antonio Texas
LB43
970
987
L82K4J9776791
L82K1J9776828
18
San Joaquin County - California
L768
—
—
SEPTA - Pennsylvania
L728
SEPTA - Pennsylvania
L741
7355
SEPTA - Pennsylvania
L742
7371
SEPTA - Pennsylvania
L743
SEPTA - Pennsylvania
SEPTA - Pennsylvania
1
S92L4D4500422
S92L3D4500427
6
L82W7D4500335
L82W7D4500335
1
7355
S92L4E4500504
S92L4E4500504
1
7414
S92L6E4500729
S92L7E4500772
44
7356
7370
S92L1E4500489
S92L2E4500503
15
L744
8601
8689
L82L7E4500570
L82LXE4500661
89
L745
7415
7415
S92L0F4500873
S92L0F4500873
1
SEPTA - Pennsylvania
L746
7416
7454
S92L7F4500952
S92L8F4501012
39
SEPTA - Pennsylvania
L749
7302
7354
S92Y7D4500409
S92L2E4500470
53
SEPTA - Pennsylvania
L861
7300
7484
S92L5G9775188
S92L8G9775220
32
PAGE 4 OF 6
NQF772002 VERSION 3
INFORMATION LETTER
CLIENT
ORDER
ROAD NUMBER
LI4546E
VIN (2NVY/4RKY...)
FROM
TO
FROM
TO
QTY
University of Alabama - Alabama
L295
7001
7001
L82U173000134
L82U173000134
1
University of Alabama - Alabama
L296
7002
7003
L82U373000135
L82U573000136
2
University of Alabama - Alabama
L310
7004
7013
L82U973000267
L82UX73000276
10
University of Alabama - Alabama
L311
7014
7017
L82U173000277
L82U173000280
4
University of Alabama - Alabama
L479
479-1
479-1
L82U394000002
L82U394000002
1
University of Alabama - Alabama
L480
480-1
480-1
L82U594000003
L82U594000003
1
University of Alabama - Alabama
L573
—
—
L82U9A4000137
L82U0A4000138
2
University of Alabama - Alabama
L640
—
—
L82U9B4000141
L82UOB4000142
2
University of Alabama - Alabama
L671
7024
7025
L82U5C4500119
L82U1C4500120
2
University of Alabama - Alabama
L727
7026
7027
L82U4D4500310
L82U6D4500311
2
University of Alabama - Alabama
L787
7028
7029
L82J2E4500507
L82J4E4500508
2
University of Alabama - Alabama
L902
7030
7030
L82J2F4500993
L82J4F4500994
2
University of Alabama - Alabama
L961
7032
7033
L82J7G9775294
L82J9G9775295
2
University of Alabama - Alabama
LA02
7034
7037
L82J8G9775546
L82JXG9775550
4
University of Colorado - Colorado
L336
—
—
L82U773000266
L82U773000266
1
University of Colorado - Colorado
L427
—
—
S92U693000027
S92U693000027
1
University of Colorado - Colorado
L428
—
—
S92U893000028
S92U893000028
1
University of Colorado - Colorado
L627
—
—
S92UXB4000139
S92U6B4000140
2
Walt Disney World - Florida
L535
1204
1213
L82UXA4000003
L82U0A4000012
10
Walt Disney World - Florida
L763
—
—
S92U0D3001019
S92U4D3001024
6
PAGE 5 OF 6
NQF772002 VERSION 3
INFORMATION LETTER
LI4546E
CAUTION
Wait until the temperature is below 50 °C (120 °F) before removing the coolant system pressure cap. Failure
to do so can cause personal injury from heated coolant spray.
ADDITIONAL INFORMATION
COOLING SYSTEM DEPRESSURIZATION
•
Whenever the engine cooling system is depressurized, either by the tank cap or by the release valve
button or by one of the valves from the system, it is mandatory to allow the engine to cool down below
50°C (120°F) before the vehicle goes back in service. This method will reduce the risk of air being trapped
which could cause damage to the cooling system.
Do not operate the engine with the pressure cap off at temperature above 93 °C (200 °F). This can result in
potential engine damage by cavitation of the water pump and localized boiling.
TOPPING OFF COOLANT
•
Cummins
Inc. does not recommend opening the cooling system for service or maintenance when the
temperature is above 50 °C (120 °F). If you open the system while hot, allow it to cool below 32 ° C (90 ° F),
then adjust the level to its maximum when cold. Maintenance on a hot cooling system may prevent the
system from generating sufficient pressure resulting in potential engine or components damages by
cavitation of the water pump and localized boiling.
•
System pressure is only generated with temperature rise of coolant. Closing the cooling system while
hot will not allow pressure to build.
COOLING SYSTEM FILLING
•
If the coolant system needs to be filled, make sure air is vented during the fill process to prevent air
locks. Follow the latest procedure, from 2018 or more recent, in your maintenance manual section 09:
Engine cooling.
PAGE 6 OF 6
NQF772002 VERSION 3
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TSB/Document ID: LI4546E
Replacement Service Bulletin Number:
MFR Communication Date: 2019-01-14
MFR Internal Campaign ID/Software Version:
Communication Type: Service Bulletin/Repair Instructions
NHTSA Components: UNKNOWN OR OTHER
MFR Component System:
MFR Component Subsystem:
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