NHTSA ID Number: 10173185
Manufacturer Communication Number: K93440201
TSB/Document Date: 2020-04-03
Summary
Automated Manual Transmission (AMT) - All AMT Models (C, D, F) - Input Shaft And High Range Synchronizer Snap-Ring Selections, Part Number Information, Reference Guide
Solution K93440201
Monday, March 23, 2020 1:22:37 PM CET
** SOLUTION **
Title
Automated Manual Transmission (AMT) - All AMT Models (C, D, F) - Input Shaft And
High Range Synchronizer Snap-Ring Selections, Part Number Information, Reference
Guide
MRU - TerraPro , TE - TerraPro , AN - Anthem , CHU - Pinnacle, Axle back , CXU Pinnacle, Axle front , GR - Granite , GU - Granite , PI - Pinnacle , TD - Titan
VN , VNL , VNM , VNR , VNX , VAH , VHD , VT
Engine family
Engine family
11L Engine , 13L Engine , 16L Engine , MP7 , MP8 , MP10
Transmission
Transmission
AMT-F With Crawler Gears , AMT-F Without Crawler Gears , AMT-C , AMT-D , A
MT-F , AMT-C , AMT-D , AMT-F With Crawler Gears , AMT-F Without Crawler
Gears
** SOLUTION **
Cause
The Input shaft snap rings and the high range synchronizer cone snap ring selections
have been increased and the dimensional tolerances have been improved.
Solution
When looking up a chassis by VIN in IMPACT to order snap rings for these positions:
• Chassis built after the new snap rings were released into production (Jan 2019 for input shaft
and March 2018 for range synchronizer) WILL show all the snap ring options available.
• Chassis built before the new snap rings were released into production will currently NOT show
all of the thickness options available.
• Superseded part numbers DO show up in results.
• New part numbers DO NOT show in results.
To view all of the thickness options in IMPACT:
DO NOT fill in any fields for chassis information. Everything aside from the fields indicated
below should be left blank.
1. Under the Parts tab, select Title from the Additional search values dropdown.
2. Enter "transmission components" into the entry field.
3. Click on the result that comes up, then click on the first entry from the list that appears.
4. The snap rings can be found in the two sections indicated below (snap ring part numbers are the
same for all AMT models):
Input shaft
Position
Old PN
New PN
Desc
Thickness
4
NA
23423404
Snap Ring
3.17
4
1521473
23423405
Snap Ring
3.20
4
NA
23423406
Snap Ring
3.23
4
NA
23423407
Snap Ring
3.26
4
1521474
23423408
Snap Ring
3.29
4
NA
23423409
Snap Ring
3.32
4
NA
23423410
Snap Ring
3.35
4
1521475
23423411
Snap Ring
3.38
4
NA
23423412
Snap Ring
3.41
4
NA
23423413
3.44
4
1521476
23423414
Snap Ring
3.47
4
NA
23423415
3.50
High range synchronizer
Position
Old PN
New PN
Desc
Thickness
21
20507504
23315348
3.70
21
NA
23281809
Snap Ring
3.75
21
20507503
23315347
Snap Ring
3.80
21
NA
23281808
Snap Ring
3.85
21
20507502
23315346
Snap Ring
3.90
21
NA
23281807
Snap Ring
3.95
21
20507501
23315345
Snap Ring
4.00
21
NA
23281806
Snap Ring
4.05
Solution visibility
21
20507500
23315344
Snap Ring
4.10
21
NA
23281805
Snap Ring
4.15
21
20507499
23315343
Snap Ring
4.20
21
NA
23281804
4.25
21
20483569
23315342
4.30
Dealer distribution
Function(s)/component(s) affected
Function affected
Impact , Input Shaft
Function Group
Function Group
431 gearbox, manual
Administration
Author
UT9268H
Dealer ID
UT9268H
Last modified by
RU4469V
Creation date
03-03-2020 15:03
Date of last update
17-03-2020 20:03
Review date
08-01-2020 00:01
Status
Published
NA_Reviewer
ut9268h
NA_Author_Group
GTT
Variantes Kola
RWX - TRANSMISSION
D SERIES - AT2612D - VPT AUTOMATED TRANSMISSION 2600NM 12SPEED , F
SERIES , AT2812C - VOLVO AUTOMATED TRANSMISSION 2800NM (2050 LB
FT)
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TSB/Document ID: K93440201
Replacement Service Bulletin Number:
MFR Communication Date: 2020-03-17
MFR Internal Campaign ID/Software Version:
Communication Type: Service Bulletin/Repair Instructions
NHTSA Components: POWER TRAIN
MFR Component System:
MFR Component Subsystem:
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