Removal Procedure
Tools Required
J 21058 Bushing Remover
and Installer
- Set the parking brake.
- Block the front wheels.
- Raise the vehicle frame using a suitable lifting device in order
to remove the weight of the vehicle from the spring assembly.
- Place jack stands under the rear axle in order to support the
frame rearward of the of the rear axle.
- Remove the rear wheel assembly, if necessary. Refer to Tire and Wheel Removal and Installation (Dual/Rear)
in Tires and Wheels.
- For taperleaf springs,
remove the following components:
• | The rear spring hanger rebound nut |
- For multileaf springs, remove the rear spring hanger bolt.
- Remove the following components:
• | The lower shock absorber nut |
• | The washer (if equipped) |
- Remove the U-bolt nuts and the washers.
- Remove the following components:
• | The U-bolt anchor plate |
• | The shock absorber bracket (if equipped) |
- Remove the U-bolts.
- Lower the axle slightly in order to gain access to the spring
front eye bolt.
- Remove the following components:
- Raise the frame in order to provide clearance between the spring
assembly and hanger bracket.
- Remove the bushing using
the J 21058
.
Installation Procedure
Tools Required
J 21058 Bushing Remover
and Installer
- Install the eye bushing
using the J 21058
.
- Lower the frame slightly in order to install the spring front
eye bolt.
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.
- Install the following
components:
• | The spring front eye bolt |
Tighten
Tighten the spring front eye bolt to 415 N·m (305 lb ft).
- Lower the frame until the hanger touches the surface of the rear
spring eye.
- For taperleaf springs,
install the following
components:
• | The rear spring hanger rebound bolt |
Tighten
Tighten the rear hanger rebound bolt to 415 N·m (305 lb ft).
- Install the U-bolt spacer over the center bolt.
- Install the U-bolts into the spacer grooves.
- Install the U-bolt anchor plate and the seat.
- Install the shock absorber bracket (if equipped).
Important: In order to properly tighten the U-bolts, tighten the bolts in the specified
sequence.
- Install the U-bolt nuts and washers according to the next two steps.
- For 20 mm (0.78 in) U-bolts:
Tighten
- Tighten U-bolt nuts to 100 N·m (74 lb ft)
in sequence.
- Tighten U-bolt nuts to 250 N·m (184 lb ft)
in sequence.
- Tighten U-bolt nuts to 375-400 N·m (276-295 lb ft)
in sequence.
- For 22 mm (0.875 in) U-bolts:
Tighten
- Tighten U-bolt nuts to 150 N·m (111 lb ft)
in sequence.
- Tighten U-bolt nuts to 275 N·m (203 lb ft)
in sequence.
- Tighten U-bolt nuts to 425-450 N·m (313-332 lb ft)
in sequence.
- 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.
- Raise the vehicle.
- Remove the jack stands.
- Lower the vehicle.
- Remove the blocks from the front wheels.