NHTSA ID Number: 10194476
Manufacturer Communication Number: CALFTL32-011
Summary
Customer Advisory Letter for 80KSI Frame Reinforcement Installation on specific Business Class M2 equipped with 80KSI frame rails and an Airliner 20,000 lb or 21,000 lb rear suspension.
Models Affected: Specific Freightliner
M2 vehicles manufactured between April 26, 2016 and April 1, 2020 equipped with 80KSI frame rails and an Airliner 20,000 lb or 21,000 lb rear suspension
Our records indicate that you are the owner of certain vehicles, and therefore DTNA has decided to share the following documentation with you.
Parts
| Parts Required | ||
| Part Number | Part Description | Quantity |
| 23-09114-000 | WASHER-HRDN,0.69X1.31X.177,ZN | 16 |
| 23-13179-110 | NUT-HEX,PT,5/8-11,C,ZC,.559 | 8 |
| 23-09444-275 | SCREW-CAP,5/8-11X2.75GR8PO.403 | 2 (Bump stop) |
| 23-09444-200 | SCREW-CAP,5/8-11X2.00GR8PO.403 | 2 (Shock bracket) |
| 23-09444-500 | SCREW-CAP,5/8-11X5.00GR8PO.403 | 2 (Track rod frame bracket) |
| 23-09444-400 | SCREW-CAP,5/8-11X4.00GR8PO.403 | 2 (Track rod axle tower) |
| 16-14540-000 | PLT-BKG,A/L,6,28/90/23.9D344 | 1 |
| 680 990 04 40 | WASHER-FLAT, HARDENED,40X17.5X6 | 1 |
Table 1, Parts Required
Work Instructions
Replace the existing reinforcement plate located at the rear suspension track rod frame bracket with a larger reinforcement plate as outlined in the following instructions.
1. Park the vehicle on a level surface, set the parking brakes, and chock the tires.
2. Put the transmission in neutral. Build the air pressure to at least 100 psi. Set the Airliner rear suspension to its normal ride height. Shut down the engine.
3. Remove the rear suspension axle stop from the right-hand frame rail.
4. Disconnect the transverse torque rod from the axle tower bracket, then remove the transverse torque rod and bracket from the inside of the right-hand frame rail.
5. Remove the existing reinforcement plate and discard it.
6. Remove the fasteners that attach the right-hand shock mounting-bracket to the frame.
7. Thoroughly clean the inside and outside of the right-hand frame rail between the air spring and suspension crossmember.
8. Align the inner reinforcement plate (16-14540-000) with the shock bracket mounting holes on the inside of the right-hand frame, then attach the shock mounting bracket to the frame and inner reinforcement plate using the two 2 in long 5/8 in bolts, nuts, and washers. See Fig. 1. Tighten the bolts hand tight only.
9. Attach the bump stop through the two lower mounting holes using the two 2-3/4 in long 5/8 in bolts, nuts and washers. Tighten the bolts hand tight only.
10. Attach the transverse torque rod and bracket using the two 5 in long 5/8 in bolts, nuts and washers. Insure the washer (680 990 04 40) is installed as shown in Fig. 2.
11. Attach the transverse torque rod to the axle tower using the two 4 in long 5/8 in bolts, nuts, and washers.
12. Torque the 5/8 in fasteners from the nut side to 128 lbf·ft (174 N·m).
5 Affected Products
Vehicle
| MAKE | MODEL | YEAR |
| FREIGHTLINER | BUSINESS CLASS M2 | 2017-2021 |
1 Associated Document
Manufacturer Communications
05/05/2021
CAL FTL 32-011
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