NHTSA ID Number: 10238258
Manufacturer Communication Number: SF656
TSB/Document Date: 2023-07-05
Summary
Field Service Campaign for Western Star
49X Airliner Rear Suspension
Daimler Truck
North America LLC
Field Service Campaign
June 2023
SF656 A-M
Subject: Western Star 49X Airliner Rear Suspension
Models Affected: Specific model years 2021-2022 Western Star
49X vehicles, manufactured September 16, 2020, through December 10, 2021.
General Information
Daimler Truck North America LLC (DTNA), on behalf of its wholly owned subsidiary, Western Star Trucks Inc.,
is initiating Field Service Campaign SF656 to modify the vehicles mentioned above.
Certain vehicles were built with an incorrect airliner rear suspension for their specific vocations.
The airliner rear suspension will be retrofitted to meet the demands of vocational services.
There are approximately 68 vehicles involved in this campaign.
Additional Repairs
Dealers must complete all outstanding Recall and Field Service campaigns prior to the sale or delivery of a
vehicle. A Dealer will be liable for any progressive damage that results from its failure to complete campaigns
before sale or delivery of a vehicle.
Owners may be liable for any progressive damage that results from failure to complete campaigns within a
reasonable time after receiving notification.
Please contact Warranty Campaigns for consideration of additional charges prior to performing the repair.
Work Instructions
Please refer to the attached work instructions. Prior to performing the campaign, check the vehicle for a
completion sticker (Form WAR261).
Replacement Parts
Replacement parts are now available and can be obtained by ordering the part number(s) listed below from
your facing Parts Distribution Center(PDC).
If our records show your dealership has ordered any vehicle(s) involved in campaign number SF656, a list of
the customers and vehicle identification numbers will be available on the DTNA Portal. Please refer to this list
when ordering parts for this campaign.
Page 1
Daimler Truck
North America LLC
Field Service Campaign
June 2023
SF656 A-M
Table 1 - Replacement Parts for SF656
Campaign Number
SF656 A
SF656 B
Page 2
Part Description
Part Number
Qty.
SEAT,A/L,RST,1.0D
R16-20751-000
2 ea
SEAT,A/L,RST,3.0D
R16-20753-000
2 ea
RTNR-U BOLT,A/L22
16-14016-000
4 ea
PAD-U BOLT,A/L22
RTNR-SEAT,A/L,8.2
U BOLT,7/8-14,390
16-14054-000
16-14586-000
11-23853-001
4 ea
4 ea
8 ea
WASHER-HRDN,0.94X1.75X.177,ZN
NUT-HEX,HI,7/8-14,C,TX,1.172
SCREW-CAP,HEX5/8-18X2.5 GR8PO
23-09114-005
23-00461-007
23-09445-250
16 ea
16 ea
8 ea
WASHER-FL SPL 5/8X1.06X1/16
WWS 2W0264879
16 ea
NUT-HEX,LKG,XL SIL,5/8-18
23-13833-210
8 ea
AXLE STOP,A/L,83,45,46,40
A 681 328 18 40
4 ea
SCREW-CAP,HEX5/8-11X1.75 GR8PO
SCREW-CAP,5/8-11X2.25GR8PO.403
23-09444-175
23-09444-225
6 ea
4 ea
NUT-HEX,LKG,VLH GR,5/8-11
SPR-A/L22,2,28/13/85,LH
23-14450-110
A16-19290-000
10 ea
2 ea
SPR-A/L22,2,28/13/85,RH
XM-HD,BOGIE,46K,51,834
A16-19290-001
A15-29289-000
2 ea
1 ea
BOLT-HEX,PC10.9,PO,M16X1.5X50
WASHER-HRDN,0.69X1.31X.177,ZN
23-14283-050
23-09114-000
20 ea
60 ea
NUT-HEX,LKG,VLH BLU,M16X1.5
RTNR-U BOLT,A/L22
PAD-U BOLT,A/L22
23-14451-116
16-14016-000
16-14054-000
20 ea
4 ea
4 ea
U BOLT,7/8-14,390
11-23853-001
8 ea
WASHER-HRDN,0.94X1.75X.177,ZN
NUT-HEX,HI,7/8-14,C,TX,1.172
NUT-HEX,LKG,XL SIL,5/8-18
23-09114-005
23-00461-007
23-13833-210
16 ea
16 ea
8 ea
AXLE STOP,A/L,83,45,46,40
SCREW-CAP,HEX5/8-11X1.75 GR8PO
SCREW-CAP,5/8-11X2.25GR8PO.403
NUT-HEX,LKG,VLH GR,5/8-11
SPR-A/L22,2,28/13/85,LH
SPR-A/L22,2,28/13/85,RH
XM-HD,BOGIE,46K,51,834
BOLT-HEX,PC10.9,PO,M16X1.5X50
WASHER-HRDN,0.69X1.31X.177,ZN
NUT-HEX,LKG,VLH BLU,M16X1.5
A 681 328 18 40
23-09444-175
23-09444-225
23-14450-110
A16-19290-000
A16-19290-001
A15-29289-000
23-14283-050
23-09114-000
23-14451-116
4 ea
6 ea
4 ea
10 ea
2 ea
2 ea
1 ea
20 ea
60 ea
20 ea
Daimler Truck
North America LLC
Field Service Campaign
June 2023
SF656 A-M
Campaign Number
SF656 C
SF656 D
Page 3
Part Description
Part Number
Qty.
SEAT,A/L,RST,0.0D
R16-20750-000
2 ea
SEAT,A/L,RST,2.0D
RTNR-U BOLT,A/L22
R16-20752-000
16-14016-000
2 ea
4 ea
PAD-U BOLT,A/L22
16-14054-000
4 ea
RTNR-SEAT,A/L,8.2
U BOLT,7/8-14,390
16-14586-000
11-23853-001
4 ea
8 ea
WASHER-HRDN,0.94X1.75X.177,ZN
23-09114-005
16 ea
NUT-HEX,HI,7/8-14,C,TX,1.172
23-00461-007
16 ea
SCREW-CAP,HEX5/8-18X2.5 GR8PO
WASHER-FL SPL 5/8X1.06X1/16
23-09445-250
WWS 2W0264879
8 ea
16 ea
NUT-HEX,LKG,XL SIL,5/8-18
AXLE STOP,A/L,83,45,46,40
23-13833-210
A 681 328 18 40
8 ea
4 ea
SCREW-CAP,HEX5/8-11X1.75 GR8PO
SCREW-CAP,5/8-11X2.25GR8PO.403
23-09444-175
23-09444-225
6 ea
4 ea
NUT-HEX,LKG,VLH GR,5/8-11
SPR-A/L22,2,28/13/85,LH
SPR-A/L22,2,28/13/85,RH
23-14450-110
A16-19290-000
A16-19290-001
10 ea
2 ea
2 ea
XM-HD,BOGIE,46K,51,834
A15-29289-000
1 ea
BOLT-HEX,PC10.9,PO,M16X1.5X50
WASHER-HRDN,0.69X1.31X.177,ZN
NUT-HEX,LKG,VLH BLU,M16X1.5
23-14283-050
23-09114-000
23-14451-116
20 ea
60 ea
20 ea
SEAT,A/L,RST,3.0D
SEAT,A/L,RST,5.5D
RTNR-U BOLT,A/L22
R16-20753-000
R16-20756-000
16-14016-000
2 ea
2 ea
4 ea
PAD-U BOLT,A/L22
16-14054-000
2 ea
PAD-U BOLT,A/L22,
RTNR-SEAT,A/L,8.2
U BOLT,7/8-14,400
16-14055-000
16-14586-000
11-23853-003
2 ea
4 ea
8 ea
WASHER-HRDN,0.94X1.75X.177,ZN
NUT-HEX,HI,7/8-14,C,TX,1.172
SCREW-CAP,HEX5/8-18X2.5 GR8PO
WASHER-FL SPL 5/8X1.06X1/16
NUT-HEX,LKG,XL SIL,5/8-18
AXLE STOP,A/L,83,45,46,40
SCREW-CAP,HEX5/8-11X1.75 GR8PO
SCREW-CAP,5/8-11X2.25GR8PO.403
NUT-HEX,LKG,VLH GR,5/8-11
SPR-A/L22,2,28/13/85,LH
SPR-A/L22,2,28/13/85,RH
XM-HD,BOGIE,46K,51,834
BOLT-HEX,PC10.9,PO,M16X1.5X50
WASHER-HRDN,0.69X1.31X.177,ZN
NUT-HEX,LKG,VLH BLU,M16X1.5
23-09114-005
23-00461-007
23-09445-250
WWS 2W0264879
23-13833-210
A 681 328 18 40
23-09444-175
23-09444-225
23-14450-110
A16-19290-000
A16-19290-001
A15-29289-000
23-14283-050
23-09114-000
23-14451-116
16 ea
16 ea
8 ea
16 ea
8 ea
4 ea
6 ea
4 ea
10 ea
2 ea
2 ea
1 ea
20 ea
60 ea
20 ea
Daimler Truck
North America LLC
Field Service Campaign
June 2023
SF656 A-M
Campaign Number
SF656 E
SF656 F
SF656 G, H, and I
Page 4
Part Description
Part Number
Qty.
RTNR-U BOLT,A/L22
16-14016-000
4 ea
PAD-U BOLT,A/L22
16-14054-000
2 ea
PAD-U BOLT,A/L22
U BOLT,7/8-14,400
16-14055-000
11-23853-003
2 ea
8 ea
WASHER-HRDN,0.94X1.75X.177,ZN
23-09114-005
16 ea
NUT-HEX,HI,7/8-14,C,TX,1.172
23-00461-007
16 ea
NUT-HEX,LKG,XL SIL,5/8-18
AXLE STOP,A/L,83,45,46,40
23-13833-210
A 681 328 18 40
8 ea
4 ea
SCREW-CAP,HEX5/8-11X1.75 GR8PO
23-09444-175
6 ea
SCREW-CAP,5/8-11X2.25GR8PO.403
NUT-HEX,LKG,VLH GR,5/8-11
23-09444-225
23-14450-110
4 ea
10 ea
SPR-A/L22,2,28/13/85,LH
A16-19290-000
2 ea
SPR-A/L22,2,28/13/85,RH
XM-HD,BOGIE,46K,51,834
BOLT-HEX,PC10.9,PO,M16X1.5X50
A16-19290-001
A15-29289-000
23-14283-050
2 ea
1 ea
20 ea
WASHER-HRDN,0.69X1.31X.177,ZN
23-09114-000
60 ea
NUT-HEX,LKG,VLH BLU,M16X1.5
RTNR-U BOLT,A/L22
PAD-U BOLT,A/L22
23-14451-116
16-14016-000
16-14054-000
20 ea
4 ea
2 ea
PAD-U BOLT,A/L22,
U BOLT,7/8-14,390
WASHER-HRDN,0.94X1.75X.177,ZN
16-14055-000
11-23853-001
23-09114-005
2 ea
8 ea
16 ea
NUT-HEX,HI,7/8-14,C,TX,1.172
23-00461-007
16 ea
AXLE STOP,A/L,83,45,46,40
SCREW-CAP,HEX5/8-11X1.75 GR8PO
SCREW-CAP,5/8-11X2.25GR8PO.403
A 681 328 18 40
23-09444-175
23-09444-225
4 ea
6 ea
4 ea
NUT-HEX,LKG,VLH GR,5/8-11
SPR-A/L22,2,28/13/85,LH
SPR-A/L22,2,28/13/85,RH
23-14450-110
A16-19290-000
A16-19290-001
10 ea
2 ea
2 ea
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TSB/Document ID: SF656
Replacement Service Bulletin Number:
MFR Communication Date: 2023-06-05
MFR Internal Campaign ID/Software Version:
Communication Type: Service Bulletin/Repair Instructions
NHTSA Components: SUSPENSION
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