NHTSA ID Number: 10154845
Manufacturer Communication Number: FL794
TSB/Document Date: 2019-03-18
Summary
FL794 Brake Caliper Mounting Bolts Dealer Bulletin
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- Mixes well with conventional fluids
- Low-moisture formula provides excellent vapor lock...
- Ideal for hydraulic and disc brakes
- Provides an extra margin of safety in extreme braking...
- Mix of polyglycol ethers ensures hot brake-system operation...
- Excellent for ABS, disc and drum brake systems
- Delivers braking power when needed by avoiding a spongy...
- Both wet and dry boiling points exceed the minimum...
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TSB/Document ID: FL794
Replacement Service Bulletin Number:
MFR Communication Date: 2018-12-04
MFR Internal Campaign ID/Software Version:
Communication Type: Service Bulletin/Repair Instructions
NHTSA Components: SERVICE BRAKES, HYDRAULIC:FOUNDATION COMPONENTS:DISC:CALIPER
MFR Component System:
MFR Component Subsystem:
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Daimler Trucks
North America LLC
Recall Campaign
December 2018
FL794A-V
NHTSA #18V-703 (Non-School Bus)
NHTSA #18V-702 (School Bus)
Transport Canada #2018-550 (Non-School Bus)
Transport Canada #2018-592 (School Bus)
Subject: Brake Caliper Mounting Bolts
Models Affected: Specific Freightliner 108SD, 114SD, Argosy,
Business Class M2, and Cascadia vehicles; Western Star 4700,
4900, and 5700 vehicles; Freightliner Custom Chassis S2C, S2G,
XB, and XC chassis; and Thomas Built Buses Saf-T Liner C2,
EFX, and HDX buses manufactured November 1, 2017, through
October 16, 2018, and equipped with air disc brakes.
General Information
Daimler Trucks North America LLC (DTNA), on behalf of its Freightliner Trucks Division and wholly owned
subsidiaries, Western Star Truck Sales, Inc., Freightliner Custom Chassis Corporation, and Thomas Built Buses,
has decided that a defect that relates to motor vehicle safety exists on the vehicles mentioned above.
There are approximately 7,562 vehicles involved in this campaign.
On certain vehicles, insufficiently torqued caliper mounting bolts may not provide adequate clamping force
between the brake caliper and brake anchor plate, potentially resulting in reduced brake effectiveness, which
could increase the risk of a crash.
Caliper mounting bolts will be inspected and replaced as needed.
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.
Work Instructions
Please refer to the attached work instructions. Prior to performing the campaign, check the vehicle for a
completion sticker (Form WAR260).
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. Letter groups include both front and rear axles and different caliper
types, as noted for each group in the table below.
If our records show your dealership has ordered any vehicles involved in campaign number FL794, a list of the
customers and vehicle identification numbers will be available in OWL. Please refer to this list when ordering
parts for this recall.
Page 1
Daimler Trucks
North America LLC
Recall Campaign
December 2018
FL794A-V
NHTSA #18V-703 (Non-School Bus)
NHTSA #18V-702 (School Bus)
Transport Canada #2018-550 (Non-School Bus)
Transport Canada #2018-592 (School Bus)
Table 1 - Replacement Parts for FL794A-V
Campaign Number
Vehicle Type
Part Number
Part Description
Qty. per
Caliper
FL794A Front Axle (Only)
Bendix Radial Caliper
Truck
23-13315-110
SCRW HX,SCKTHD,M16-2X110,12.9
6 ea
FL794B Front Axle (Only)
Bendix Axial Caliper
Truck
SCREW-CAP,HEX,M20X60,10.9,P/O
23-09114-004
WASHER-HRDN,0.81X1.47X.177,ZN
FL794C Front Axle (Only)
Wabco Radial Caliper
Truck
23-13843-070
SCREW-CAP,SKT HD,M20X1.5X70
FL794D Front Axle (Only)
Wabco Axial Caliper
Truck
SCREW-CAP,HEX,M20X60,10.9,P/O
23-09114-004
WASHER-HRDN,0.81X1.47X.177,ZN
FL794E Front Axle (Only)
Meritor Radial Caliper
Truck
TDA 41X1801
KIT-MER ADB-L, HARDWARE
4 ea
FL794F Front & Rear Axle
Bendix Radial Caliper
Truck
23-13315-110
SCRW HX,SCKTHD,M16-2X110,12.9
6 ea
FL794G Front Axle
Bendix Radial Caliper
Truck
23-13315-110
SCRW HX,SCKTHD,M16-2X110,12.9
6 ea
FL794G Rear Axle
Bendix Axial Caliper
Truck
N210931 020001
23-09114-004
SCREW-CAP,HEX,M20X60,10.9,P/O
WASHER-HRDN,0.81X1.47X.177,ZN
6 ea
FL794H Front Axle
Bendix Axial Caliper
Truck
SCREW-CAP,HEX,M20X60,10.9,P/O
23-09114-004
WASHER-HRDN,0.81X1.47X.177,ZN
FL794H Rear Axle
Bendix Radial Caliper
Truck
23-13315-110
SCRW HX,SCKTHD,M16-2X110,12.9
6 ea
FL794I Front & Rear Axle
Bendix Axial Caliper
Truck
N210931 020001
23-09114-004
SCREW-CAP,HEX,M20X60,10.9,P/O
WASHER-HRDN,0.81X1.47X.177,ZN
6 ea
Truck
23-13843-070
SCREW-CAP,SKT HD,M20X1.5X70
4 ea
Truck
23-13843-070
SCREW-CAP,SKT HD,M20X1.5X70
4 ea
SCREW-CAP,HEX,M20X60,10.9,P/O
23-09114-004
N210931 020001
23-09114-004
WASHER-HRDN,0.81X1.47X.177,ZN
SCREW-CAP,HEX,M20X60,10.9,P/O
WASHER-HRDN,0.81X1.47X.177,ZN
Truck
23-14285-055
BOLT-HEX,PC10.9,PO,M20X1.5X55
6 ea
Truck
TDA 41X1801
KIT-MER ADB-L, HARDWARE
4 ea
Truck
TDA 41X1801
KIT-MER ADB-L, HARDWARE
4 ea
N210931 020001
23-09114-004
N210931 020001
23-09114-004
SCREW-CAP,HEX,M20X60,10.9,P/O
WASHER-HRDN,0.81X1.47X.177,ZN
SCREW-CAP,HEX,M20X60,10.9,P/O
WASHER-HRDN,0.81X1.47X.177,ZN
23-13315-110
SCRW HX,SCKTHD,M16-2X110,12.9
N210931 020001
23-09114-004
N210931 020001
23-09114-004
N210931 020001
23-09114-004
SCREW-CAP,HEX,M20X60,10.9,P/O
WASHER-HRDN,0.81X1.47X.177,ZN
SCREW-CAP,HEX,M20X60,10.9,P/O
WASHER-HRDN,0.81X1.47X.177,ZN
SCREW-CAP,HEX,M20X60,10.9,P/O
WASHER-HRDN,0.81X1.47X.177,ZN
FL794J Front & Rear Axle
Wabco Radial Caliper
FL794K Front Axle
Wabco Radial Caliper
FL794K Rear Axle
Wabco Axial Caliper
Truck
FL794L Front & Rear Axle
Wabco Axial Caliper
Truck
FL794M Front & Rear Axle
Meritor Radial Caliper
FL794N Front & Rear Axle
Meritor Radial Caliper
FL794O Front Axle
Meritor Radial Caliper
FL794O Rear Axle
Meritor Axial Caliper
Truck
FL794P Front & Rear Axle
Meritor Axial Caliper
Truck
FL794Q Front & Rear Axle
Bendix Radial Caliper
Shuttle Bus
FL794R Front & Rear Axle
Bendix Axial Caliper
FL794S Front Axle (Only)
Bendix Axial Caliper
FL794T Rear Axle (Only)
Bendix Axial Caliper
Page 2
Table 1, Continue to pg. 3
6 ea
4 ea
6 ea
6 ea
6 ea
6 ea
6 ea
6 ea
6 ea
6 ea
6 ea
6 ea
Daimler Trucks
North America LLC
Recall Campaign
December 2018
FL794A-V
NHTSA #18V-703 (Non-School Bus)
NHTSA #18V-702 (School Bus)
Transport Canada #2018-550 (Non-School Bus)
Transport Canada #2018-592 (School Bus)
Qty. per
Caliper
Campaign Number
Vehicle Type
Part Number
Part Description
FL797U Front & Rear Axle
Bendix Axial Caliper
School Bus
N210931 020001 or
23-12893-060
23-09114-004
FL797V Front & Rear Axle
Bendix Radial Caliper
School Bus
23-13315-110
SCRW HX,SCKTHD,M16-2X110,12.9
6 ea
FL794A-V
All
WAR260
BLANK COMPLETION STICKER
1 ea
SCREW-CAP,HEX,M20X60,10.9,P/O
6 ea
WASHER-HRDN,0.81X1.47X.177,ZN
Table 1, Continued from pg. 2
Removed Parts
U.S. and Canadian Dealers, please follow Warranty Failed Parts Tracking shipping instructions for the
disposition of all removed parts. Export distributors, please destroy removed parts unless otherwise advised.
Labor Allowance
Table 3 - Labor Allowance
Campaign
Number/Group
FL794A-E (Truck)
FL794S,T
(Motorhome)
FL794 F-Q,V
(Truck, Bus)
FL794R,U
(Motorhome, Bus)
FL794F-P
(Truck)
FL794A-E
(Truck)
FL794S,T
(Motorhome)
FL794F-Q,V
(Truck, Bus)
FL794R,U
(Motorhome, Bus)
FL794F-P
(Truck)
FL794A-V
(All Vehicles)
Time Allowed
(hours)
SRT Code
Corrective Action
Inspect caliper bolts, 1 axle
Inspect caliper bolts, 1 axle,
with radial runout check
1.0
996-R058F
06-Inspect
1.2
996-R058H
06-Inspect
Inspect caliper bolts, 2 axles
2.0
996-R058A
06-Inspect
Inspect caliper bolts, 2 axles,
with radial runout check
2.4
996-R058I
06-Inspect
Inspect caliper bolts, second rear axle
1.1
996-R058B
06-Inspect
Inspect and torque caliper bolts, 1 axle
1.0
996-R058G
12-Repair Recall/Campaign
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