NHTSA ID Number: 10200207
Manufacturer Communication Number: FSB 366 002
TSB/Document Date: 2021-08-09
Summary
Certain MACK
CHU, CXU, and GU trucks built between 11/11/2013 and 01/14/2015, equipped with front radar may experience loss of front object detection or erratic operation of cruise control functions. The terminal seals of the harness is allowing moisture and corrosion to build up in the front radar harness. To ensure proper operation of the front radar, the harness is inspected for the proper seal and/or corrosion. If the harness or seal fail inspection, replacement of the harness is required. Follow the inspection and repair procedures outlined in this document.
No.
Release
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01
2 Remove the fasteners and flat washers securing the front radar sensor and shroud.
Note: Store the flat washers, and fasteners in a clean and secure location for installation.
W3103585
3 Remove the front radar sensor, spacers, and shroud.
Note: Return radar assembly to the Core Hub for credit and processing.
Note: Store spacers and shroud in a clean and secure location for installation.
W3103588
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Mack Trucks, Inc.
Field Service Bulletin
Date
3.2016
Group
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366
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01
4 Remove the cable ties securing the front radar harness.
5 Disconnect the front radar harness from the main cab harness.
W3103450
6 Remove the existing front radar harness.
Note: Note the routing of the existing harness for installation of the replacement harness.
7 Route the replacement front radar harness into position as noted.
8 Connect the replacement front radar harness to the main cab harness.
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Mack Trucks, Inc.
Field Service Bulletin
Date
3.2016
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9 Use the cable ties listed on page 1 to secure the front radar harness.
Note: Ensure there is enough harness at the other end to connect to the front radar
sensor.
10 Position the replacement front radar sensor, spacers, and shroud.
W3103589
11 Install the fasteners and flat washers securing the front radar sensor and shroud.
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Mack Trucks, Inc.
Field Service Bulletin
Date
3.2016
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366
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01
12 Tighten the fasteners securing the front radar sensor and shroud to 27 ± 4 Nm (20 ± 3 ftlb).
13 Connect the front radar harness to the radar module.
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14 Close the hood.
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Mack Trucks, Inc.
Field Service Bulletin
Date
3.2016
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366
002
01
15 Perform the Sensor, VOLVO Enhanced Cruise (VEC), Alignment Check and Adjustment
procedure as shown in steps 17 – 26.
16 Place a digital angle gauge on top of the vehicle frame rail as shown. Reset the digital
gauge to 0 degree.
W8085795
17 Attach Bendix Alignment tool (part number K065284) to the front of the radar sensor cover.
Note: A cover (2) is included with the replacement radar sensor. If the cover is missing,
use assistance to hold the alignment tool (1) on the radar sensor.
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Mack Trucks, Inc.
Field Service Bulletin
Date
3.2016
Group
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01
18 Attach the digital angle gauge to the alignment tool.
19 Check the vertical alignment tool and ensure the digital angle gauge is reading 0 degrees.
Note: If the vertical alignment tool with the angle gauge is not reading 0 degrees,
adjustment of the radar sensor’s vertical angle is required.
W3103591
20 If applicable, adjust the vertical alignment of the radar sensor to 0 degrees.
Note: Periodically recheck the alignment tool and angle gauge during the vertical
alignment procedure.
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Mack Trucks, Inc.
Field Service Bulletin
Date
3.2016
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01
21 Using the alignment tool. turn the laser on and check the sensor’s lateral alignment.
CAUTION
Do not stare into the laser beam (2).
Note: Use the tow hook receptacles (1) or frame rail ends as a measuring point if
possible.
22 After the first lateral measurement (3), turn the laser off.
23 Flip the laser and orient it towards the opposite side of the truck.
24 Turn the laser on, and record the second lateral measurement (3) from the tow hook
receptacle (1).
Note: If the lateral measurements vary by more than 3 mm (0.125 in) of each other, adjust
the lateral alignment of the radar sensor.
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Mack Trucks, Inc.
Field Service Bulletin
Date
3.2016
Group
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366
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25 If applicable, adjust the lateral alignment of the radar sensor until the two measurements
are (Less than 3 mm (.125 in) of each other.
W3103593
26 If applicable, remove the cover from the front of the radar sensor.
Note: Failure to remove the cover will cause a Diagnostic Fault Code (DTC).
W3103594
27 Continue to page 18, and (Commission the truck for Operation).
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Mack Trucks, Inc.
Field Service Bulletin
Date
3.2016
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01
Commissioning the Truck for Operation
1 Connect all of the cables to the battery’s negative terminals.
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2 Remove the wheel chocks.
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3 Check the operation of the (Adaptive Cruise Control).
Note: If a diagnostic trouble code (DTC) is logged after the repairs are complete,
connected the truck to a PC with BENDIX A-Com software to clear the DTC.
4 Test drive the truck and check the operation of the adaptive cruise control.
Note: This is a separate operation.
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Mack Trucks, Inc.
Field Service Bulletin
Date
3.2016
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Reimbursement
This repair may be eligible for reimbursement if a product
failure was experienced within time and mileage limits of
the applicable Warranty coverage. Reimbursement is
obtained via the normal claim handling process.
UCHP Reimbursement
Claim Type (used only when uploading from the Dealer
Bus. Sys.)
01
Labor Code
Primary Labor Code (Front Radar Harness Inspection)
3000–06–09–01
0.3 hrs
Labor Code (Front Radar Harness Replacement)
3665–03–09–02
1.2 hrs
Labor Code (Front Radar and Harness Replacement)
3665–03–09–03
1.4 hrs
Causal Part
22134349
MACK Trucks North America reserves the right to make any changes in design or to make
additions to or upon its products without incurring any obligations to install the same on
vehicles previously built.
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TSB/Document ID: FSB 366 002
Replacement Service Bulletin Number:
MFR Communication Date: 2016-03-01
MFR Internal Campaign ID/Software Version:
Communication Type: Service Bulletin/Repair Instructions
NHTSA Components: FORWARD COLLISION AVOIDANCE: ADAPTIVE CRUISE CONTROL
MFR Component System:
MFR Component Subsystem:
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