Tighten the U-bolt nuts just enough to allow the spring to move a bit side-to-side for axle installation.

eo on ea an FF YN

Remove the rear axle oil plug and install the temperature sensor. Ensure it is in the same position
as the old axle.

_
o

Inspect the axle for oil and verify that the oil level is below the weld point. If the new axle does not have a sensor
guard installed, weld a guard in place to protect the axle temperature sensor.

11. Top off axle oil to compensate for any oil lost after installing the sensor.

12. Install the new brass brake hose fittings in proper ports for service and parking brake chambers.
13. Install the rear shocks using the original fasteners at the spring side.

14. Install the axle vent tube.

15. Place the new lateral rod bolts from the kit through the tower and secure them with a tie strap. This provides clearance
for the bolts.

Craning the Old Rear Drive Axle into the Shipping Crate
1. Attach the overhead crane/chain to the old axle.
2. Crane the old rear drive axle and place it in the shipping crate for return.

3. | Take the crane to the new rear drive axle sitting on the jack stand rack and place the axle on the floor for installation
at a later step.

4. Lift and crane the new matching forward drive axle from the shipping crate and place on the jack stand rack.
Removal of the Forward Drive Axle from the Chassis

IMPORTANT: All drive tires must be discarded and replaced with new tires.

1. Disconnect the rear axle ABS sensor connections.

2. Disconnect the axle temperature sensor wiring and cut the tie straps that secure the wiring to the axles.

3. Raise the chassis and roll the dolly under the forward drive axle and lower the chassis to rest the axle on the dolly.

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Revision Date: April 2026

Disconnect the air hoses from the brake chambers.

Remove the inter-axle driveline from the back of the forward drive axle.

Remove the suspension leveling rod.

Remove only the upper mounting bolts of the shock from the forward drive axle. Save the fasteners for installation.
Remove only the air bag bell nuts and washers from the forward drive axle. Save the fasteners for installation.
Remove the two bolts that secure the lateral rod to the drive axle tower.

Remove the bolts from the spring eyes for the forward drive axle.

Lift the chassis from the axle, support the frame, and roll the axle out from under the vehicle.

Leave the axle on the dolly to facilitate removal of the axle components.

Rest the chassis on the jack stands for safety.

Removal of Components from the Forward Drive Axle

1.

2
3
4.
5
6

Remove the shocks from the springs. Save the shocks and fasteners for installation.

Remove the springs. Save the springs along with the axle top and bottom spring pad for installation.
Discard the existing axle seat, U-bolts, nuts, and washers.

Remove the axle temperature sensor and save the sensor for installation.

Remove the axle vent tube and save for installation.

After the components are removed, crane the old forward drive axle and place it into the shipping crate.

Building Up the Forward Drive Axle on the Jack Stand Rack
NOTE: Refer to the Workshop Manual, Group 00 General Information, for Torque Specifications.

1.

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_
o

Remove two axle seats from the kit.

Remove four U-bolts, eight washers, and nuts from the kit.

Place the axle stop cast on the top axle housing in position.

Hang the U-bolts on the top axle stop pads on the axle.

Place the new axle seat on top of the spring in proper position. The seat has directional indicators.
Install the spring and pad with the thick end of the new axle seat on the aft side per D16-20089-001.
Install new U-bolts, nuts, and washers to hold the spring in place.

Verify the top axle pad is in the proper location.

Tighten the U-bolt nuts just enough to allow the spring to move a bit side-to-side for axle installation.

Remove the axle oil plug and install the temperature sensor.

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Daimler Truck

North America LLC Field Service Campaign

SF706 A-B
Creation Date: February 2026
Revision Date: April 2026

11.

12.
13.
14.
15.
16.
17.
18.
19.
20.

Inspect the axle for oil and verify that the oil level is below the weld point. If the new axle does not have a sensor guard
installed, weld a guard in place to protect the axle temperature sensor.

Top off axle oil to compensate for any oil lost after installing the sensor.

Install the new brass brake hose fittings in proper ports for service and parking brake chambers.
Install the rear shocks using the original fasteners at the spring side.

Install the axle vent tube.

Crane the new forward drive axle and place on the axle hang dolly.

Install the inter-axle driveline on the back of the forward drive axle and tighten the fasteners.
Install the main driveline on the front of the forward drive axle and tighten the fasteners.

Place the front of the main driveline slip joint/yoke on the small dolly.

Place new lateral rod bolts from the kit through the tower and secure them with a tie strap. This provides clearance for
the bolts.

Reworking the Frame for Lateral Rod / Reinforcement Plates

1.

2
3.
4.
5

Remove the bolts that attach both forward and rear lateral rods and saddles to the frame.
Remove the shock bracket from the right-hand rear axle frame.

Remove the right-hand frame axle stop casting by cutting the four frame huck bolts.
Remove the left-hand forward shock bracket.

Remove the left-hand forward frame axle stop casting from frame by cutting the four frame huck bolts.

Installation of Frame Reinforcement Plates for Axle Lateral Rods

1.

Place and align the appropriate reinforcement plate on the right-hand side frame rail to relocate the lateral rod for the
rear-rear drive axle.

Using the plate as a template, position it on the outside of the frame rail, aligning the three holes for the frame axle
stop.

Once the holes are aligned, install temporary bolts and tighten them, leaving the frame axle stop off for now to keep
the plate properly located.

Place and align the appropriate reinforcement plate on the left-hand forward frame rail to relocate the lateral rod for
the forward-rear drive axle.

Using the plate as a template, position it on the outside of the frame rail, aligning the three holes for the frame axle
stop.

Once the holes are aligned, install temporary bolts and tighten them, leaving the axle stop off for now to keep the plate
properly located.

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Daimler Truck

North America LLC Field Service Campaign

SF706 A-B
Creation Date: February 2026
Revision Date: April 2026

7. Use a 5/8-inch mag drill or equivalent to drill out the required holes in the left-hand forward frame through the holes
for the lateral rod and reinforcement plate. Use the old plate as a drilling guide. See Fig. 7.

12/15/2025 f330509

Fig. 7, Left-Hand Forward Lateral Rod and Bolt Installation After Drilling Is Completed

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Daimler Truck

North America LLC Field Service Campaign

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Creation Date: February 2026
Revision Date: April 2026

8. Use a 5/8-inch mag drill or equivalent to drill out the required holes in the right-hand frame through the holes for the
lateral rod and reinforcement plate. Use the old plate as a drilling guide. See Fig. 8.

ff

ey a

12/15/2025 f330510

Fig. 8, Right-Hand Lateral Rod and Bolt Installation After Drilling Is Completed

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Daimler Truck

North America LLC Field Service Campaign

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Revision Date: April 2026

9.

10.

11.
12.

13.

After drilling, remove the temporary bolts and move the reinforcement plates to the inside of the frame rail where the
holes were drilled.

Install the shock mount and axle frame stop bracket using the proper length bolts. Fill any remaining holes in the frame
rails with grade 8 hardware following the same guidelines, ensuring at least 3 full threads extend past the nuts.

Repeat this process for each reinforcement plate on the rear drive axle at the opposite frame rail.

Tighten all bolts securing the reinforcement plates on both frame rails, except the lateral rod and saddle bolts, to allow
axle installation.

Replace any warning labels that were damaged/covered by the work being performed. Relocate labels if necessary.

Installation of the Forward Drive Axle into the Chassis

1.

o on eon F Yo BS

= —_
Ss oO
. .

12.
13.

Raise the chassis with an overhead hoist or a four-point lift.

Roll the forward drive axle that is on the axle dolly under the chassis.

Extend the shocks out to the max position.

As the chassis is being lowered on to the axle, line up the suspension air bag bell studs into the rear spring.
Install the airbag stud using the new nuts and washers and tighten.

Continue to lower the chassis on to the axle, lining up the front spring eyes with the castings.

Insert the new fasteners into the front spring eyes, not the castings.

Line up the top shock into the frame shock bracket, and secure using the original fasteners.

Line up and install the new fasteners that attach the lateral rod to the axle tower.

Tighten the front spring eyes, shock bolts, and lateral rod bolts at the axle towers and the frame.

Raise/support the main driveline. Fasten it to the midship bearing support bracket using new the new fasteners
provided per D09-11946-000. Torque fasteners to 148 Ibf-ft (200 N-m).

Raise the chassis and remove the dolly.

Rest the chassis on the jack stands for safety.

Crane the Rear Drive Axle on to the Installation Dolly

Installation of Rear Drive Axle into the Chassis

1.

2
3.
4
5

Chain the forward drive axle to the frame so the axle weight doesn't hang on the suspension and damage it.
Raise the chassis with an overhead hoist.

Roll the rear drive axle that is on the axle dolly under the chassis.

Extend the shocks out to the max position.

As the chassis is being lowered on to the axle, line up the suspension air bag bell studs into the rear spring.

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Daimler Truck

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Creation Date: February 2026

Revision Date: April 2026

Install the airbag stud using the new nuts and washers and tighten.

Continue to lower the chassis on to the axle, lining up the front spring eyes with the spring hangers.

Insert the new fasteners from the hanger side into the front spring eyes.

Line up the top shock into the frame shock bracket, and secure using the original fasteners.

10. Line up and install the new fasteners that attach the lateral rod to the axle tower.

11. Tighten the front spring eyes, shock bolts, and lateral rod bolts at the axle towers and the frame.

12. Raise the chassis with an overhead hoist and set the chassis on jack stands under the forward drive hubs.

13. Install the new interaxle driveshaft using the new hardware supplied per DO9-11936-001. Torque fasteners to
125 Ibf-ft (170 N-m).

Connecting the ABS / Plumbing to Axles
1. Connect the hoses to the hose fittings on the service and parking brake chambers.
2. Use the original clips or butterfly straps to route and connect the ABS harness at all four wheel ends.

3. While in this area of the truck, install the new suspension rod from the kit between the suspension-levelling valve and
the forward drive axle.

Tightening the Fasteners

_
.

Hand-tighten the axle U-bolt high nuts.
2. Tighten the nuts in a diagonal pattern 60 Ibf-ft (81 N-m).

3. In the same diagonal pattern, tighten the nuts 200 Ibf-ft (271 N-m).

4. Finally, tighten the nuts 420 to 500 Ibf-ft (569 to 678 N-m).

5. Check the rear axle oil levels.

Installation of the Rear Wheels and New Tires / Inflation and Monitoring System
1. Install the TPMS sensors on the rear wheel ends, if originally equipped.

2. _ Install the wheels and new tires.

3. Tighten the wheel lug nuts 500 Ibf-ft (678 N-m).

4. Install all rear axle wheel flow below covers (hub wheel covers), if originally equipped.
5

Install the rear 1/4 fender aero fairings, if originally equipped.

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Daimler Truck

North America LLC Field Service Campaign

SF706 A-B
Creation Date: February 2026
Revision Date: April 2026

Plumbing the Manual Inter-Axle Switch and Plumbing

NOTE: For vehicles equipped with Driver Control Differential Lock (DCDL), connect the existing DCDL lines to the new
axles.

1. Drain all air from the system. Remove the plumbing from the solenoids above the rear axle, then remove the solenoids.
Save the 1/4-inch white airline for later use (if this airline is not long enough, then a new airline may be needed for
later use instead.)

2. Remove the yellow supply line for solenoids from the frame, then remove the Y-connector and two short yellow lines.
Use a section of the removed yellow line to replace the Y-connector and two short yellow section lines. See Fig. 9.

li sl AY iy .

01/23/2026 330505

A. Remove the supply line for solenoids from the frame. C. Remove the two short yellow lines.
B. Remove the Y-connector.

Fig. 9, Y-Connector

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Daimler Truck

North America LLC Field Service Campaign

SF706 A-B
Creation Date: February 2026
Revision Date: April 2026

. | Move the old temperature sensor and differential lock harnesses aside as far as possible.
4. Pull the dash panels including the ICU to route the dash harness and airline for the dash switch. See Fig. 10.

08/12/2025 #330506

Fig. 10, Dash Side Panel

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Daimler Truck

North America LLC Field Service Campaign

SF706 A-B
Creation Date: February 2026
Revision Date: April 2026

5.

10.

11.
12.

13.

14.

Use wiring diagram G06-92166-002 to connect the harness. The splice packs can be accessed from the tunnel on
the passenger side. The splice pack locations are shown in Fig. 11.

08/12/2025 330507

Fig. 11, Splice Packs

The old axle harness, shown in drawing G66-08370-001, may be incorrectly routed. Verify the circuit number before
removing the connector. The pins 30 and 43 are in BHM_1A instead of BHB_1B. Remove pin 30 from the dash side.

Cut out a new spot in the dash for the switch, then install the switch.

Use the %-inch white airline saved earlier (if long enough), or use a new %-inch white airline, and route it into the
passthrough and then to the switch. Install the dash panels.

Use the 1/4-inch coupler from the kit and run about 25 feet of the 1/4-inch white airline to the differential lock.

The temperature sensor harness is routed differently due to new axles. Wrap the temperature sensor harness back to
where they split and wrap 2 feet back on the axle lock sensor harness.

Put the split for the temperature sensor harness at the crossmember, right behind the batteries.

Run and secure both the harnesses to the split point, then wrap both the harnesses together. Two unused brackets
may be found on the crossmember, use the brackets by flipping them around so the wires do not rub on the frame.

Run the harness to the front of vehicle and cut to length, there may be almost 20 ft of extra wire. Put new pins on wires
and pin them per the wiring diagram. The connector locations are shown in Fig. 11.

Remove all the old axle harness pins from chassis side connectors, then install the plugs.

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Daimler Truck

North America LLC Field Service Campaign

SF706 A-B
Creation Date: February 2026
Revision Date: April 2026

15. Start the engine and check for air leaks. Operate the inter-axle lock and DCDL (if equipped), checking for air leaks.
Release the parking brakes and check for air leaks. Have an assistant apply the brake pedal and check for air leaks.

16. Perform the ride height calibration.
17. Verify proper functioning of the interaxle lock and differential lock (DCDL), if equipped.

Alignment / Tracking and Spacing of the Rear Axle

1. Set the tracking and spacing of the rear axles.

Perform an axle alignment. Refer to the workshop manual.