NHTSA ID Number: 11022455
Manufacturer Communication Number: CB784
TSB/Document Date: 2025-09-03
Summary
The Thermo King
TXV valve supplier made modifications to the superheat setting on the Bus TXV valve (PN 615185) prior to receiving approval from Thermo King. Upon being notified of the quality concern, Thermo King conducted an assessment and identified that a total of 321 Bus units in the field are at risk. This issue requires prompt action to manually re-adjust the valves on the affected units to ensure they operate within an acceptable range.
HTG1435627
HTG1435628
HTG1435629
HTG1435630
HTG1435641
HTG1435643
HTG1435644
HTG1435645
HTG1435646
HTG1435647
HTG1435634
HTG1435632
HTG1435635
HTG1435633
HTG1435631
HTG1435637
HTG1435640
HTG1435638
T14 & T15
T14 & T15
T14 & T15
T14 & T15
T14 & T15
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SERIAL NO. UNIT TYPE
HTG1435639
HTG1435755
HTG1435765
HTG1435761
HTG1435636
HTG1435756
HTG1435757
HTG1435758
HTG1435759
HTG1435760
HTG1435766
HTG1435762
HTG1435763
HTG1435751
HTG1435750
HTG1435753
HTG1435764
HTG1435752
HTG1435748
HTG1435749
HTG1435747
HTG1435746
HTG1435745
HTG1435754
HTG1436681
HTG1436680
HTG1436679
HTG1436678
HTG1436676
HTG1436675
HTG1436677
HTG1436673
HTG1436674
T14 & T15
T14 & T15
T14 & T15
T14 & T15
T14 & T15
T14 & T15
T14 & T15
T14 & T15
T14 & T15
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T14 & T15
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T14 & T15
T14 & T15
SERIAL NO. UNIT TYPE
HTG1436682
HTG1436683
HTG1436664
HTG1436665
HTG1436666
HTG1436667
HTG1436672
HTG1436670
HTG1436671
HTG1436669
HTG1436668
HTG1437118
HTG1437119
HTG1437124
HTG1437125
HTG1437121
HTG1437122
HTG1437120
HTG1437123
HTG1437108
HTG1437109
HTG1437110
HTG1437111
HTG1437117
HTG1437115
HTG1437114
HTG1437116
HTG1437113
HTG1437112
HTG1437852
HTG1437851
HTG1437853
T14 & T15
T14 & T15
T14 & T15
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T14 & T15
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SERIAL NO.
UNIT TYPE
SERIAL NO.
HTG1428658
HTG1430485
HTG1430486
HTG1431236
HTG1431237
HTG1431912
HTG1431911
HTG1432904
HTG1433802
HTG1433803
HTG1434654
HTG1435561
HTG1436137
HTG1436138
HTG1436726
HTG1436725
HTG1427833
HTG1430459
HTG1430460
HTG1430461
HTG1430462
HTG1431205
HTG1431206
HTG1431207
HTG1431897
HTG1431896
HTG1431895
HTG1431894
HTG1432871
HTG1432872
HTG1433788
HTG1433789
HTG1433790
HTG1433791
RLF1HPMV
RLF1HPMV
RLF1HPMV
RLF1HPMV
RLF1HPMV
RLF1HPMV
RLF1HPMV
RLF1HPMV
RLF1HPMV
RLF1HPMV
RLF1HPMV
RLF1HPMV
RLF1HPMV
RLF1HPMV
RLF1HPMV
RLF1HPMV
RLF2
RLF2
RLF2
RLF2
RLF2
RLF2
RLF2
RLF2
RLF2
RLF2
RLF2
RLF2
RLF2
RLF2
RLF2
RLF2
RLF2
RLF2
HTG1434633
HTG1434634
HTG1434635
HTG1434636
HTG1434637
HTG1434638
HTG1435525
HTG1435526
HTG1435527
HTG1435528
HTG1436710
HTG1436711
HTG1437491
HTG1437492
HTG1428664
HTG1430487
HTG1430488
HTG1431243
HTG1431242
HTG1431928
HTG1431929
HTG1432909
HTG1433809
HTG1434655
HTG1434656
HTG1435562
HTG1436140
HTG1436739
HTG1436740
HTG1436738
HTG1427126
HTG1427127
HTG1427128
HTG1427129
3
UNIT TYPE
RLF2
RLF2
RLF2
RLF2
RLF2
RLF2
RLF2
RLF2
RLF2
RLF2
RLF2
RLF2
RLF2
RLF2
RLF2E
RLF2E
RLF2E
RLF2E
RLF2E
RLF2E
RLF2E
RLF2E
RLF2E
RLF2E
RLF2E
RLF2E
RLF2E
RLF2E
RLF2E
RLF2E
T14
T14
T14
T14
1. Filing Instructions:
1. Log in to TAVANT.
2. Click on “Create Claim” link on the home page.
3. Select claim type “Field Modification.”
4. Select the campaign option: FM784.
5. Enter the remaining information on page one, then click the continue button to move to
page two:
a. Repair date
b. Work order
c. Number of hours in service
6. The labor section will be completed automatically.
7. The parts section will be completed automatically.
8. Non-Thermo King TSA Parts section will be completed automatically.
9. Enter comments as needed; “Condition Found” and “Work Performed” for example.
10. Validate and claim information looks correct on the claim summary.
Click the “Submit” button to send the claim for warranty processing.
4
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TSB/Document ID: CB784
Replacement Service Bulletin Number:
MFR Communication Date: 2025-08-14
MFR Internal Campaign ID/Software Version:
Communication Type: Service Campaign
NHTSA Components: UNKNOWN OR OTHER
MFR Component System:
MFR Component Subsystem:
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