Spring Hanger Replacement Single Axle

Important: Both the rear and the front rear spring hangers are installed the same way. The front spring hanger requires the removal of the frame rivets.

1. Set the parking brake.
2. Block the front wheels.
3. Raise the frame until the tension is released from the spring and the hanger bolt.
4. Remove the following components from the spring and the hanger:

•	The spring eye bolt nut

•	The washers

•

The bolt

5. Remove the spring hanger rivets, if equipped.



6. Remove the following components from the side member (4):

•	The spring hanger nuts (2)

•	The washers (3, 5)

•	The bolts (6)

•	The spring hanger (1)

Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

1. Install the hanger to the side member with the following parts:

•	The bolts (6)

•	The washers (3, 5)

•	The nuts (2)

Tighten
Tighten the spring hanger nut to 70 N·m (52 lb ft).

2. Raise the spring in order to align the spring eye and spring hanger holes.



3. Install the following components in the spring and the hanger:

•	The spring eye bolt

•	The washers

•

The nut

4. For tapered leaf springs, install the following components:

•	The rear spring hanger rebound bolt

•	The washer

•

The nut

Tighten
Tighten the rear spring hanger bolt to 415 N·m (305 lb ft).

5. For multileaf springs, install the rear spring hanger bolt.

Tighten
Tighten the rear spring hanger bolt. Ensure that a minimum of 84.07 mm (3.36 in) is between the ears of the rear spring hanger.

6. Lower the vehicle.
7. Remove the blocks from the wheels.

Spring Hanger Replacement Tandem Axle-Front Hanger

1. Set the parking brake.
2. Block the front wheels.
3. Support the frame using a suitable lifting device.
4. Remove the rear dual wheel assembly. Refer to Tire and Wheel Removal and Installation in Tires and Wheels.
5. Remove the following components:

•	The rebound bolt nut

•	The washer

•	The rebound bolt (6)

6. Raise the frame (1) until the hanger clears the spring.
7. Remove the following components:

•

The nuts

•	The washers

•

The bolts

•	The hanger

8. Remove the hanger to crossmember spacers (4), if used.
9. Remove the web spacer (2), if used. The web spacer is used instead of the frame reinforcement.

1. Install the frame web spacer (2), if used.
2. Install the hanger to crossmember spacers (4).

Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

3. Install the following components. Use the bolts with washers on the inside and the outside of the frame.

•	The hanger

•

The bolts

•	The washers

•

The nuts

Tighten
Tighten the hanger nut to 155 N·m (115 lb ft).

4. Lower the frame (1) onto the spring assembly.
5. Install the following parts:

•	The rebound bolt (6)

•	The washer

•

The nut

Tighten
Tighten the rebound nut to 75 N·m (55 lb ft).

6. Install the dual wheel assembly, if removed. Refer to Tire and Wheel Removal and Installation in Tire and Wheels.
7. Remove the blocks from the wheels.

Spring Hanger Replacement Tandem Axle-Rear Hanger

1. Set the parking brake.
2. Block the front wheels.
3. Place a suitable lifting device under the forward rear axle.
4. Remove the dual wheel assembly, if necessary. Refer to Tire and Wheel Removal and Installation in Tire and Wheels.



5. Remove the load from the spring and the spring eye pin (3).
6. Raise the frame using a suitable lifting device.
7. Remove the following components:

•	The eye pin clamp bolt nut

•	The washer

•	The bolt (2)

8. Remove the lubrication fitting from the spring eye pin (3).
9. Remove the spring eye pin (3). Drive out the eye pin using a drift and a hammer from the outer side.
10. Raise the frame.
11. Lower the axle until the spring hammer clears the spring.
12. Remove the following components:

•

The nuts

•	The washers

•

The bolts

•	The spring hanger

Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

1. Install the following components. Use the bolts with washers on the insider and the outside of the frame.

•	The spring hammer

•

The bolts

•	The washers

•

The nuts

Tighten
Tighten the spring hammer nut to 155 N·m (115 lb ft).

2. Install the spring eye pin (3).

2.1.	Lower the frame and raise the axle in order to align the spring eye (5) and the spring front hanger (6).

2.2.	Apply a thin coat of chassis lubricant to the spring eye (5) and the spring eye pin (3).

2.3.	Align the milled flat near the end of the eye pin with the clamp bolt (2) hole in the spring hanger (6).

2.4.	Use a hammer from the outer side in order to drive the spring eye pin (3) through the spring front hanger (6) and the spring eye (5).

3. Install the following components:

•	The clamp bolt (2)

•	The washer

•

The nut

Tighten
Tighten the eye pin clamp bolt nut to 75 N·m (55 lb ft).

4. Install the dual wheel assembly, if removed.
5. Remove the blocks from the wheels.