PROPELLER SHAFT / DRIVE SHAFT / AXLE
PDA
  1. General Description
  2. Propeller Shaft
  3. Front Drive Shaft
  4. Front Axle
  5. Front Hub Unit Bearing
  6. Rear Drive Shaft
  7. Rear Axle
  8. Rear Hub Unit Bearing
  9. Symptoms and causes
PROPELLER SHAFT / DRIVE SHAFT / AXLE > General Description　
SPECIFICATION
1. PROPELLER SHAFT

Propeller shaft type

High-efficiency compact double offset joint (EDJ)

Propeller shaft (front side) joint-to-joint length: L1

mm (in)

675.5 (26.59)

Propeller shaft (rear side) joint-to-joint length: L2

mm (in)

747 (29.41)

Outer diameter of tube:

D1

mm (in)

63.5 (2.50)

D2

mm (in)

57.5 (2.26)
2. FRONT DRIVE SHAFT

Type of drive shaft

High-efficiency compact ball fixed joint (EBJ) + Pillow tripod joint (PTJ)

Axle diameter

mm (in)

22.0 (0.87)

Axle length

mm (in)

365.4 (14.39)

(A)

Axle diameter

(B)

Axle length
3. REAR DRIVE SHAFT

Type of drive shaft

Ball fixed joint (BJ) + Double offset joint (DOJ)

Axle diameter

mm (in)

22.0 (0.87)

Axle length

mm (in)

410.8 (16.17)

(A)

Axle diameter

(B)

Axle length
PROPELLER SHAFT / DRIVE SHAFT / AXLE > General Description　
COMPONENT
1. PROPELLER SHAFT

(1)

Propeller shaft

Tightening torque: N·m (kgf-m, ft-lb)

T1:

31 (3.2, 22.9)

T2:

52 (5.3, 38.4)
2. FRONT AXLE

(1)

Circlip

(10)

Boot band (small)

Tightening torque: N·m (kgf-m, ft-lb)

(2)

Baffle plate

(11)

O-ring

T1:

18 (1.8, 13.3)

(3)

Outer race

(12)

Shaft ASSY

T2:

95 (9.7, 70.1)

(4)

Snap ring

(13)

Bolt

T3:

220 (22.4, 162.3)

(5)

Bearing

(14)

Front axle housing

(6)

Trunnion

(15)

Front brake back plate

(7)

Snap ring

(16)

Hub bolt

(8)

Boot band (large)

(17)

Front hub unit bearing

(9)

Boot (IN side)

(18)

Axle nut
3. REAR AXLE

(1)

Circlip

(10)

Boot (IN side)

(19)

Rear brake back plate

(2)

Baffle plate

(11)

Boot band (small)

(20)

Hub bolt

(3)

Outer race

(12)

Boot band (small)

(21)

Rear hub unit bearing

(4)

Snap ring

(13)

Boot (OUT side)

(22)

Axle nut

(5)

Ball

(14)

Boot band (large)

(6)

Inner race

(15)

Shaft ASSY

Tightening torque: N·m (kgf-m, ft-lb)

(7)

Cage

(16)

Bolt

T1:

85 (8.7, 62.7)

(8)

Snap ring

(17)

Rear axle housing

T2:

190 (19.4, 140.1)

(9)

Boot band (large)

(18)

Bushing trailing link
PROPELLER SHAFT / DRIVE SHAFT / AXLE > General Description　
CAUTION
PROPELLER SHAFT / DRIVE SHAFT / AXLE > General Description　
PREPARATION TOOL
1. SPECIAL TOOL

ILLUSTRATION

Part No.

DESCRIPTION

REMARKS

926470000

AXLE SHAFT PULLER

  • Used for removing the drive shaft.

  • Used by exchanging the plate with AXLE SHAFT PULLER PLATE (28099PA110).

20099FG000

BUSHING REMOVER

  • Used for replacing the bushing of rear axle housing.

  • Used together with base part of INSTALLER & REMOVER (20099PA010).

20099PA010

INSTALLER & REMOVER

  • Used for replacing the bushing of rear axle housing.

  • Used together with BUSHING REMOVER (20099FG000).

28099AC000

BOOT BAND PLIER

Used for tightening the boot band of the front drive shaft.

28099PA080

HUB STAND

Used for press-fitting hub bolt.

28099PA110

AXLE SHAFT PULLER PLATE

  • Used for removing the drive shaft.

  • Exchange with the plate of the AXLE SHAFT PULLER (926470000) to use.

28399AG000

HUB STAND

Used for extracting hub bolt.

28399SA010

OIL SEAL PROTECTOR

Used for installing the front drive shaft. (For oil seal protection)

—

SUBARU SELECT MONITOR 4

Used for setting of each function and troubleshooting for electrical system.

 

For detailed operation procedures, refer to “Help” of application.
2. GENERAL TOOL

TOOL NAME

REMARKS

Ball joint puller

Used for disconnecting joints.

Magnet stand

  • Used for measuring the propeller shaft and hub unit bearing.

  • Used together with dial gauge.

DIAL GAUGE

  • Used for measuring the propeller shaft and hub unit bearing.

  • Used together with magnet stand.

Crowbar

Used for removing the drive shaft.

DST-i

Used together with Subaru Select Monitor 4.
PROPELLER SHAFT / DRIVE SHAFT / AXLE > Propeller Shaft　
REMOVAL
1.

Release the parking brake.

2.

Release the shift lock using a screwdriver, etc. and shift the select lever to the “N” range.

3.

Remove the rear exhaust pipe. EXHAUST(H4DO)>Rear Exhaust Pipe>REMOVAL

4.

Wrap a cloth, etc. at the point shown in the figure to protect the boot.

5.

Place an alignment mark (A) on the joint portion of the propeller shaft and the rear differential.

6.

Disconnect the propeller shaft and rear differential.

 

Do not bend the joint of the propeller shaft more than required.

7.

Remove the center bearing bolt and remove the propeller shaft.

 

  • Do not bend the joint of the propeller shaft more than required.

  • Be careful not to damage the oil seal.

  • After removal, protect the tip end with a cloth or the like.

 

Prepare the container for draining of engine oil.

8.

Install an appropriate cap, etc. to the transmission.

 

Be careful not to damage the oil seal.

PROPELLER SHAFT / DRIVE SHAFT / AXLE > Propeller Shaft　
INSTALLATION
1.

Apply CVTF to the oil seal lip and propeller shaft sleeve yoke.

2.

Insert the sleeve yoke into the transmission and attach center bearing bolt.

 

Do not bend the joint of the propeller shaft more than required.

Tightening torque:

52 N·m (5.3kgf-m, 38.4ft-lb)

3.

Align the alignment marks (A), and connect the propeller shaft and rear differential.

Tightening torque:

31 N·m (3.2kgf-m, 22.9ft-lb)

4.

Install the rear exhaust pipe. EXHAUST(H4DO)>Rear Exhaust Pipe>INSTALLATION

5.

Shift the select lever to “P range”.

6.

Apply the parking brake.

7.

Check the CVTF level. CONTINUOUSLY VARIABLE TRANSMISSION(TR580)>CVTF>INSPECTION

PROPELLER SHAFT / DRIVE SHAFT / AXLE > Propeller Shaft　
DISASSEMBLY

Propeller shaft cannot be disassembled.

PROPELLER SHAFT / DRIVE SHAFT / AXLE > Propeller Shaft　
INSPECTION
1.

Check that there is no deformation, cracks or other damages.

2.

Check each part for looseness and runout.

 

Check with the propeller shaft installed to the vehicle.

(1)

Remove the rear exhaust pipe. EXHAUST(H4DO)>Rear Exhaust Pipe>REMOVAL

(2)

Check for looseness while moving the splines, universal joint section and center bearing by hand.

(3)

Measure the runout of the propeller shaft using a magnet stand and dial gauge.

 

  • Measurement must be performed at the center of the propeller shaft.

  • When measuring, turn the rear tier to rotate the propeller shaft.

Service limit:

Front side: 0.6 mm (0.02in)

Rear side: 0.6 mm (0.02in)

PROPELLER SHAFT / DRIVE SHAFT / AXLE > Front Drive Shaft　
REMOVAL
1.

Disconnect the ground terminal from battery sensor. (LH side) REPAIR CONTENTS>NOTE > BATTERY

2.

Remove the front wheels. WHEEL AND TIRE SYSTEM>Tire and Wheel>REMOVAL

3.

Lift the crimped section of axle nut.

4.

Remove the axle nut while depressing the brake pedal.

5.

Drain differential gear oil. CONTINUOUSLY VARIABLE TRANSMISSION(TR580)>Differential Gear Oil>REPLACEMENT

6.

Remove the crossmember support rear RH. (RH side) FRONT SUSPENSION>Crossmember Support>REMOVAL

7.

Remove the front exhaust pipe. (LH side) EXHAUST(H4DO)>Front Exhaust Pipe>REMOVAL

8.

Disconnect the front axle housing from the arm COMPL front.

 

Be careful not to damage the boot of the ball joint.

(1)

Remove the bolt from the front axle housing.

(2)

Lower the arm COMPL front, and remove the ball joint portion from the front axle housing.

9.

Pull out the front drive shaft from the front hub unit bearing.

 

  • Be careful not to damage the spline portion of the front drive shaft.

  • Be careful not to damage the front hub unit bearing.

  • Be careful not to damage the boot of the ball joint.

 

Preparation tool:

ST1: AXLE SHAFT PULLER (926470000)

ST2: AXLE SHAFT PULLER PLATE (28099PA110)

10.

Insert a crowbar, etc. between the differential side retainer and front drive shaft, and remove the front drive shaft.

 

Be careful not to damage the peripheral parts.

PROPELLER SHAFT / DRIVE SHAFT / AXLE > Front Drive Shaft　
INSTALLATION
 

When the front drive shaft is removed using the ST, install the caliper body. BRAKE>Front Disc Brake Assembly>INSTALLATION

1.

Replace with a new differential side retainer oil seal. CONTINUOUSLY VARIABLE TRANSMISSION(TR580)>Differential Side Retainer Oil Seal>REPLACEMENT

2.

Replace the circlip with a new part.

3.

Apply differential gear oil to the differential side retainer oil seal lip and front drive shaft insertion section.

4.

Set the ST to differential side retainer.

Preparation tool:

ST: OIL SEAL PROTECTOR (28399SA010)

5.

Insert the front drive shaft spline section into transmission and remove the ST (OIL SEAL PROTECTOR).

 

Remove it before inserting the front drive shaft completely.

6.

Insert the front drive shaft completely.

7.

Insert the front drive shaft into the front hub unit bearing.

 

  • Be careful not to damage the spline portion of the front drive shaft.

  • Be careful not to damage the front hub unit bearing.

  • Be careful not to damage the boot of the ball joint.

8.

Install the front axle housing to the arm COMPL front.

 

  • Be careful not to damage the boot of the ball joint.

  • Before tightening, make sure the bottom surface of front axle housing and stepped section of ball joint COMPL are in contact.

Tightening torque:

50 N·m (5.1kgf-m, 36.9ft-lb)

(a)

Bottom surface of front axle housing

(b)

Stepped section of ball joint COMPL

(c)

Front axle housing

(d)

Ball joint COMPL
9.

Install the front exhaust pipe. (LH side) EXHAUST(H4DO)>Front Exhaust Pipe>INSTALLATION

10.

Install the crossmember support rear RH. (RH side) FRONT SUSPENSION>Crossmember Support>INSTALLATION

11.

Fill differential gear oil. CONTINUOUSLY VARIABLE TRANSMISSION(TR580)>Differential Gear Oil>REPLACEMENT

12.

While depressing the brake pedal, install the axle nut.

 

Be sure to use a new axle nut.

Tightening torque:

220 N·m (22.4kgf-m, 162.3ft-lb)

13.

Crimp the axle nut.

14.

Install the front wheels. WHEEL AND TIRE SYSTEM>Tire and Wheel>INSTALLATION

15.

Connect the ground terminal to battery sensor. (LH side) REPAIR CONTENTS>NOTE > BATTERY

16.

Inspect the wheel alignment and adjust if necessary.

17.

Perform the following adjustments using Subaru Select Monitor.

PROPELLER SHAFT / DRIVE SHAFT / AXLE > Front Drive Shaft　
DISASSEMBLY
 

Boot (OUT side) cannot be disassembled.

1.

Place alignment marks on the shaft assembly and outer race.

2.

Remove the boot band (large) and boot band (small) and move the boot (IN side) to the central side of the shaft assembly.

 

Be careful not to damage the boot (IN side).

3.

Remove the snap ring, and remove the outer race.

 

Be careful not to drop the bearing.

4.

Remove the grease and place alignment marks on the bearing and trunnion.

5.

Remove the bearing.

6.

Wipe off the grease and place alignment marks on the trunnion and shaft assembly.

7.

Remove the snap ring and remove the trunnion.

8.

Remove the boot (IN side).

 

Be sure to wrap the shaft assembly splines with vinyl tape, etc. to protect the boot (IN side) from scratches.

9.

Remove the O-ring from the shaft assembly.

10.

Clean each part.

 

Be careful not to erase the alignment marks.

PROPELLER SHAFT / DRIVE SHAFT / AXLE > Front Drive Shaft　
ASSEMBLY
1.

Pass the boot band (small), boot (IN side) and snap ring through the shaft assembly.

 

Be sure to wrap the shaft assembly splines with vinyl tape, etc. to protect the boot (IN side) from scratches.

(A)

Boot band (small)

(B)

Boot (IN side)

(C)

Snap ring
2.

Roll up a thick piece of paper to a size where the shaft assembly can pass through, and affix with tape to form a cylinder.

3.

Set a new O-ring on this cylinder.

 

  • Be careful not to damage the O-ring.

  • Make sure to install the O-ring so that it does not twist.

  • Do not stretch the O-ring to 30 mm (1.2in) or more in an inner diameter.

(A)

O-ring

(B)

Cylinder material
4.

Pass the cylinder material through the shaft assembly.

(A)

Shaft ASSY

(B)

Cylinder material

(C)

O-ring
5.

Slide the cylinder material to the shaft assembly boot groove, and move the O-ring from the cylinder material onto the shaft assembly boot groove.

 

  • Attach the O-ring to the shaft assembly boot groove center.

  • Make sure to install the O-ring so that it does not twist.

  • Check that the O-ring does not become scratched and that there are no foreign objects attached to it.

(A)

Shaft ASSY

(C)

O-ring

(D)

Boot groove

(B)

Cylinder material

6.

Remove the cylinder material.

7.

Align alignment marks, set the trunnion and install the snap ring.

 

Check that the snap ring is completely fitted.

8.

Apply 100 — 110 g (3.5 — 3.9 oz) of grease into the interior of outer race.

Grease:

NKG302 or the equivalent

9.

Apply a thin coat of grease to the bearing and trunnion bearing installation portion.

Grease:

NKG302 or the equivalent

10.

Align alignment marks, and install the bearing.

11.

Align alignment marks, set the outer race and install the snap ring.

 

Pull the shaft assembly lightly and assure that the snap ring is completely fitted.

12.

Apply 45 — 50 g (1.6 — 1.8 oz) of grease evenly to the entire inner surface of boot (IN side).

Grease:

NKG302 or the equivalent

13.

Install the boot (IN side).

 

  • Do not twist the boot (IN side).

  • Completely remove any grease that comes out and adheres to the outer surface of the boot (IN side).

  • Check that it fits in the boot groove securely.

(A)

Shaft ASSY

(C)

O-ring

(D)

Boot groove

(B)

Boot (IN side)
14.

Set the new boot band (large) and new boot band (small).

15.

Tighten the boot band (large) and boot band (small) using the ST.

 

The boot band (large) and boot band (small) are to be tightened so that the omega shaped part is at the position indicated in the figure.

(A)

Omega shaped part

(B)

Boot band

(C)

Outer race

Tightening torque:

Boot band (large)

178 N·m (18.2kgf-m, 131.3ft-lb)

Boot band (small)

145 N·m (14.8kgf-m, 106.9ft-lb)

Preparation tool:

ST: BOOT BAND PLIER (28099AC000)

(A)

Boot band

(B)

Torque wrench

(C)

Spinner handle, etc.
16.

Extend and retract the boot (IN side) repeatedly so that grease is spread evenly.

PROPELLER SHAFT / DRIVE SHAFT / AXLE > Front Drive Shaft　
INSPECTION
1.

Check that there is no deformation, cracks or other damages.

2.

Check for grease leakage.

3.

Check the joint for looseness.

4.

Check for excessive wear.

5.

Check for excessive rusting.

PROPELLER SHAFT / DRIVE SHAFT / AXLE > Front Axle　
REMOVAL
1.

Remove the front wheels. WHEEL AND TIRE SYSTEM>Tire and Wheel>REMOVAL

2.

Lift the crimped section of axle nut.

3.

Remove the axle nut while depressing the brake pedal.

4.

Remove the front disc rotor. BRAKE>Front Disc Rotor>REMOVAL

5.

Remove the front brake back plate.

6.

Remove the front ABS wheel speed sensor.

 

  • Be careful not to damage the sensor.

  • Do not apply excessive force to the sensor harness.

7.

Disconnect the tie-rod end.

 

Be careful not to damage the boot of the ball joint.

(1)

Remove the cotter pin (a).

(2)

Remove the castle nut (b).

(3)

Using a ball joint puller (d), remove the tie-rod end (c).

Preparation tool:

Ball joint puller

8.

Put an alignment mark (A) on the adjusting bolt for the strut assembly and the strut, and loosen the flange nut.

 

Loosen the nut side while holding the bolt side.

9.

Disconnect the front axle housing from the arm COMPL front.

 

Be careful not to damage the boot of the ball joint.

(1)

Remove the bolt from the front axle housing.

(2)

Lower the arm COMPL front, and remove the ball joint portion from the front axle housing.

10.

Pull out the front drive shaft from the front hub unit bearing.

 

  • Be careful not to damage the spline portion of the front drive shaft.

  • Be careful not to damage the front hub unit bearing.

  • Be careful not to damage the boot of the ball joint.

 

If it is hard to remove, use ST1 and ST2.

Preparation tool:

ST1: AXLE SHAFT PULLER (926470000)

ST2: AXLE SHAFT PULLER PLATE (28099PA110)

11.

Hang the front drive shaft with a string, etc.

12.

Remove the front axle housing from the strut assembly.

 

Since the front axle housing is heavy, be careful not to drop it.

13.

Remove the front hub unit bearing. PROPELLER SHAFT / DRIVE SHAFT / AXLE>Front Hub Unit Bearing>REMOVAL

PROPELLER SHAFT / DRIVE SHAFT / AXLE > Front Axle　
INSTALLATION
1.

Install the front hub unit bearing. PROPELLER SHAFT / DRIVE SHAFT / AXLE>Front Hub Unit Bearing>INSTALLATION

2.

Temporarily install the front axle housing to the strut assembly.

 

Always use a new flange nut.

3.

Insert the front drive shaft into the front hub unit bearing.

 

  • Be careful not to damage the spline portion of the front drive shaft.

  • Be careful not to damage the front hub unit bearing.

  • Be careful not to damage the boot of the ball joint.

4.

Install the front axle housing to the arm COMPL front.

 

  • Be careful not to damage the boot of the ball joint.

  • Before tightening, make sure the bottom surface of front axle housing and stepped section of ball joint COMPL are in contact.

Tightening torque:

50 N·m (5.1kgf-m, 36.9ft-lb)

(a)

Bottom surface of front axle housing

(b)

Stepped section of ball joint COMPL

(c)

Front axle housing

(d)

Ball joint COMPL
5.

Align the alignment marks (A) on the adjusting bolt for the strut assembly and the strut, and tighten the flange nut.

 

Tighten the nut side while holding the bolt side.

 

First, tighten the adjusting bolt (upper side) to the specified torque.

Tightening torque:

155 N·m (15.8kgf-m, 114.3ft-lb)

6.

Connect the tie-rod ends.

 

Do not apply grease, etc. to the tapered portion of ball stud.

(1)

Tighten the castle nut.

Tightening torque:

27 N·m (2.8kgf-m, 19.9ft-lb)

 

If the ball stud hole and the cutout portion of the castle nut are not aligned after tightening, tighten the castle nut within the range of 60° to align with each other.

(2)

Install a new cotter pin.

7.

Install the front ABS wheel speed sensor.

Tightening torque:

7.5N·m (0.8kgf-m, 5.5ft-lb)

8.

Install the front brake back plate.

Tightening torque:

18 N·m (1.8kgf-m, 13.3ft-lb)

9.

Install the front disc rotor. BRAKE>Front Disc Rotor>INSTALLATION

10.

While depressing the brake pedal, install the axle nut.

 

Be sure to use a new axle nut.

Tightening torque:

220 N·m (22.4kgf-m, 162.3ft-lb)

11.

Crimp the axle nut.

12.

Install the front wheels. WHEEL AND TIRE SYSTEM>Tire and Wheel>INSTALLATION

13.

Inspect the wheel alignment and adjust if necessary.

14.

Perform the following adjustments using Subaru Select Monitor.

PROPELLER SHAFT / DRIVE SHAFT / AXLE > Front Axle　
INSPECTION
1.

Check that there is no deformation, cracks or other damages.

2.

Check for excessive rusting.

PROPELLER SHAFT / DRIVE SHAFT / AXLE > Front Hub Unit Bearing　
REMOVAL
1.

Remove the front wheels. WHEEL AND TIRE SYSTEM>Tire and Wheel>REMOVAL

2.

Lift the crimped section of axle nut.

3.

Remove the axle nut while depressing the brake pedal.

4.

Remove the front disc rotor. BRAKE>Front Disc Rotor>REMOVAL

5.

Remove the front hub unit bearing.

 

  • Be careful not to damage the front hub unit bearing.

  • Do not get closer the tool which charged magnetism to the front hub unit bearing.

PROPELLER SHAFT / DRIVE SHAFT / AXLE > Front Hub Unit Bearing　
INSTALLATION
1.

Install the front hub unit bearing.

 

  • Always use a new bolt.

  • Be careful not to damage the front hub unit bearing.

  • Do not get closer the tool which charged magnetism to the front hub unit bearing.

Tightening torque:

95 N·m (9.7kgf-m, 70.1ft-lb)

2.

Install the front disc rotor. BRAKE>Front Disc Rotor>INSTALLATION

3.

While depressing the brake pedal, install the axle nut.

 

Be sure to use a new axle nut.

Tightening torque:

220 N·m (22.4kgf-m, 162.3ft-lb)

4.

Crimp the axle nut.

5.

Install the front wheels. WHEEL AND TIRE SYSTEM>Tire and Wheel>INSTALLATION

PROPELLER SHAFT / DRIVE SHAFT / AXLE > Front Hub Unit Bearing　
DISASSEMBLY

Using the ST or a press, push out the hub bolt (B) from the front hub unit bearing (A).

 

Be careful not to use a hammer, etc. to tap the hub bolts. This may deform the front hub unit bearing.

 

Front hub unit bearing cannot be disassembled.

Preparation tool:

ST: HUB STAND (28399AG000)

PROPELLER SHAFT / DRIVE SHAFT / AXLE > Front Hub Unit Bearing　
ASSEMBLY
1.

Set the front hub unit bearing and hub bolt to the ST.

 

Always use a new hub bolt.

Preparation tool:

ST: HUB STAND (28099PA080)

2.

Using a press, press the hub bolt (B) until its seating surface contacts the hub unit bearing (A).

 

Use the 12 mm (0.5in) dia. holes of ST to prevent bolts from tilting.

PROPELLER SHAFT / DRIVE SHAFT / AXLE > Front Hub Unit Bearing　
INSPECTION
1.

Check that there is no deformation, cracks or other damages.

2.

Check for excessive rusting.

3.

Check the following items by turning the front tires by hand.

  • Check for smooth rotation.

  • Check for noise.

4.

Check the front hub unit bearing for looseness.

(1)

Moving the upper and lower portions of front tire in the vertical direction.

  • Looseness exists → Go to next step.

  • No looseness → Normal.

(2)

Move the upper and lower portions of front tire in the vertical direction with the brake pedal depressed.

  • Looseness exists → Check the ball joint, each bushing, front suspension and axle housing.

  • No looseness → Replace the front hub unit bearing.

5.

To perform a precise inspection, use a magnet stand and dial gauge to check for looseness in the axial direction of the front hub unit bearing.

Service limit:

0.05 mm (0.002in)

PROPELLER SHAFT / DRIVE SHAFT / AXLE > Rear Drive Shaft　
REMOVAL
1.

Release the parking brake.

2.

Release the shift lock using a screwdriver, etc. and shift the select lever to the “N” range.

3.

Remove the rear wheels. WHEEL AND TIRE SYSTEM>Tire and Wheel>REMOVAL

4.

Lift the crimped section of axle nut.

5.

Remove the axle nut while depressing the brake pedal.

6.

Drain differential gear oil. DIFFERENTIALS>Differential Gear Oil>REPLACEMENT

7.

Remove the rear differential. DIFFERENTIALS>Rear Differential (VA-type)>REMOVAL

 

If the circlip remains inside the rear differential, overhaul the rear differential.

8.

Pull out the rear drive shaft from the rear hub unit bearing.

 

  • Be careful not to damage the spline portion of the rear drive shaft.

  • Be careful not to damage the rear hub unit bearing.

 

Preparation tool:

ST1: AXLE SHAFT PULLER (926470000)

ST2: AXLE SHAFT PULLER PLATE (28099PA110)

PROPELLER SHAFT / DRIVE SHAFT / AXLE > Rear Drive Shaft　
INSTALLATION
1.

Replace with a new differential side retainer oil seal. DIFFERENTIALS>Differential Side Retainer Oil Seal>REPLACEMENT

2.

Replace the circlip with a new part.

3.

Insert the drive shaft into the rear hub unit bearing.

 

  • Be careful not to damage the spline portion of the rear drive shaft.

  • Be careful not to damage the rear hub unit bearing.

4.

Tighten the axle nut temporarily.

 

Be sure to use a new axle nut.

5.

Install the rear differential. DIFFERENTIALS>Rear Differential (VA-type)>INSTALLATION

6.

Fill differential gear oil. DIFFERENTIALS>Differential Gear Oil>REPLACEMENT

7.

While depressing the brake pedal, tighten the axle nut.

Tightening torque:

190 N·m (19.4kgf-m, 140.1ft-lb)

8.

Crimp the axle nut.

9.

Install the rear wheels. WHEEL AND TIRE SYSTEM>Tire and Wheel>INSTALLATION

10.

Shift the select lever to “P range”.

11.

Apply the parking brake.

PROPELLER SHAFT / DRIVE SHAFT / AXLE > Rear Drive Shaft　
DISASSEMBLY
1.

Place alignment marks on the shaft assembly and outer race.

2.

Remove the boot band (large) and boot band (small) and move the boot (IN side) to the central side of the shaft assembly.

 

Be careful not to damage the boot (IN side).

3.

Remove the snap ring, and remove the outer race.

 

Be careful not to drop the ball.

4.

Remove the ball.

 

Be careful not to lose the ball.

5.

Rotate the cage by a half pitch to shift to the central side of the shaft assembly.

6.

Wipe off the grease and place alignment marks on the inner race and shaft assembly.

7.

Remove the snap ring, and remove the inner race.

8.

Remove the cage.

9.

Remove the boot (IN side).

 

Be sure to wrap the shaft assembly splines with vinyl tape, etc. to protect the boot (IN side) from scratches.

10.

Remove the boot band (large) and boot band (small) and remove the boot (OUT side).

 

Be sure to wrap the shaft assembly splines with vinyl tape, etc. to protect the boot (OUT side) from scratches.

 

BJ cannot be disassembled.

11.

Clean each part.

 

Be careful not to erase the alignment marks.

PROPELLER SHAFT / DRIVE SHAFT / AXLE > Rear Drive Shaft　
ASSEMBLY
1.

Pass the boot (OUT side) through the shaft assembly.

 

Be sure to wrap the shaft assembly splines with vinyl tape, etc. to protect the boot (OUT side) from scratches.

2.

Apply 35 — 50 g (1.2 — 1.8 oz) of grease to the boot (OUT side).

Grease:

NKG814 or the equivalent

3.

Install the boot (OUT side).

 

  • Do not twist the boot.

  • Completely remove any grease that comes out and adheres to the outer surface of the boot (OUT side).

  • Check that it fits in the boot groove securely.

(A)

Boot (OUT side)

(B)

Shaft ASSY

(C)

Boot groove
4.

Install the new boot band (large) and boot band (small).

5.

Extend and retract the boot (OUT side) repeatedly so that grease is spread evenly.

6.

Pass the boot band (small) and boot (IN side) through the shaft assembly.

 

Be sure to wrap the shaft assembly splines with vinyl tape, etc. to protect the boot (IN side) from scratches.

7.

Pass the cage through the shaft assembly.

 

Insert the cage with its narrow part facing the boot (IN side).

8.

Set the inner race by aligning the alignment marks, and install the snap ring.

 

Check that the snap ring is completely fitted.

9.

Install the cage to the inner race.

 

Insert by aligning the cage side face hole and the inner race protrusion and secure it by turning the cage by a half pitch.

10.

Apply 55 — 65 g (1.9 — 2.3 oz) of grease into the interior of outer race.

Grease:

NKG814 or the equivalent

11.

Apply a thin coat of grease to the ball and ball installation portion of the cage.

Grease:

NKG814 or the equivalent

12.

Set the ball to the cage.

 

Be careful not to drop the ball.

13.

Align alignment marks, set the outer race and install the snap ring.

 

Pull the shaft assembly lightly and assure that the snap ring is completely fitted.

14.

Apply 10 — 15 g (0.4 — 0.5 oz) of grease evenly to the entire inner surface of boot (IN).

Grease:

NKG814 or the equivalent

15.

Install the boot (IN side).

 

  • Do not twist the boot (IN side).

  • Completely remove any grease that comes out and adheres to the outer surface of the boot (IN side).

  • Check that it fits in the boot groove securely.

(A)

Boot (OUT side)

(B)

Shaft ASSY

(C)

Boot groove
16.

Install the new boot band (large) and boot band (small).

17.

Extend and retract the boot (IN side) repeatedly so that grease is spread evenly.

PROPELLER SHAFT / DRIVE SHAFT / AXLE > Rear Drive Shaft　
INSPECTION
1.

Check that there is no deformation, cracks or other damages.

2.

Check for grease leakage.

3.

Check the joint for looseness.

4.

Check for excessive wear.

5.

Check for excessive rusting.

PROPELLER SHAFT / DRIVE SHAFT / AXLE > Rear Axle　
REMOVAL
1.

Using the Subaru Select Monitor, perform the brake maintenance mode. PARKING BRAKE>Parking Brake System>OPERATION > BRAKE MAINTENANCE MODE

2.

Disconnect the ground terminal from battery sensor. REPAIR CONTENTS>NOTE > BATTERY

3.

Remove the rear wheels. WHEEL AND TIRE SYSTEM>Tire and Wheel>REMOVAL

4.

Lift the crimped section of axle nut.

5.

Remove the axle nut while depressing the brake pedal.

6.

Remove the rear ABS wheel speed sensor.

 

  • Be careful not to damage the sensor.

  • Do not apply excessive force to the sensor harness.

7.

Remove the rear disc rotor. BRAKE>Rear Disc Rotor>REMOVAL

8.

Remove the electronic parking brake harness bracket.

9.

Disconnect the rear stabilizer link from the rear axle housing.

10.

Disconnect the rear lateral link assembly front from the rear axle housing.

(1)

Remove the snap pin and remove the nut.

(2)

Using the ball joint puller, disconnect the rear lateral link assembly front from the rear axle housing.

 

Be careful not to damage the boot of the ball joint.

 

At this time, it is not necessary to completely pull off the rear lateral link assembly front from the rear axle housing.

11.

Loosen the self-locking nut securing the upper arm assembly and the rear axle housing.

12.

Disconnect the rear axle housing from the trailing link.

13.

Disconnect the rear axle housing (B) from the rear lateral link assembly rear (A).

14.

Disconnect the rear shock absorber (C) from the rear lateral link assembly rear (A).

15.

Disconnect the rear axle housing from the upper arm assembly.

16.

Pull out the rear drive shaft from the rear hub unit bearing.

 

  • Be careful not to damage the spline portion of the rear drive shaft.

  • Be careful not to damage the rear hub unit bearing.

 

If it is hard to remove, use ST1 and ST2.

Preparation tool:

ST1: AXLE SHAFT PULLER (926470000)

ST2: AXLE SHAFT PULLER PLATE (28099PA110)

17.

Hang the rear drive shaft with a string, etc.

18.

Remove the rear axle housing from the rear lateral link assembly front.

 

Since the rear axle housing is heavy, be careful not to drop it.

19.

Remove the rear hub unit bearing. PROPELLER SHAFT / DRIVE SHAFT / AXLE>Rear Hub Unit Bearing>REMOVAL

PROPELLER SHAFT / DRIVE SHAFT / AXLE > Rear Axle　
INSTALLATION
1.

Install the rear hub unit bearing. PROPELLER SHAFT / DRIVE SHAFT / AXLE>Rear Hub Unit Bearing>INSTALLATION

2.

Temporarily install the rear axle housing to rear lateral link assembly front (A).

3.

Insert the rear drive shaft (B) into the rear hub unit bearing.

 

  • Be careful not to damage the spline portion of the rear drive shaft.

  • Be careful not to damage the rear hub unit bearing.

4.

Temporarily install the rear axle housing to the upper arm assembly (C).

 

Be sure to use new self-locking nuts and new flange bolts.

5.

Connect the stabilizer link to the rear axle housing.

 

Always use a new flange nut.

Tightening torque:

38 N·m (3.9kgf-m, 28.0ft-lb)

6.

Temporarily install the rear shock absorber to the rear lateral link assembly rear.

 

Be sure to use a new self-locking nut.

7.

Temporarily install the rear axle housing to the rear lateral link assembly rear.

 

Be sure to use a new self-locking nut.

8.

Temporarily install the rear axle housing to the trailing link.

 

Be sure to use a new self-locking nut.

9.

Tighten the self-locking nut securing the rear axle housing to the upper arm assembly.

Tightening torque:

80 N·m (8.2kgf-m, 59.0ft-lb)

10.

Connect the rear lateral link assembly front to the rear axle housing.

(1)

Connect the rear lateral link assembly front to the rear axle housing.

 

Do not apply grease, etc. to the tapered portion of ball joint.

Tightening torque:

60 N·m (6.1kgf-m, 44.3ft-lb)

(2)

Install a new snap pin.

11.

Apply a load to the rear axle housing using a transmission jack.

 

  • Set a wooden block, etc. on the contact surface between the transmission jack and housing.

  • Confirm that the vehicle is in empty condition (at curb weight).

12.

Tighten the bolt securing the trailing link to the rear axle housing.

Tightening torque:

100 N·m (10.2kgf-m, 73.8ft-lb)

13.

Tighten the self-locking nut securing the rear shock absorber to the rear lateral link assembly rear.

Tightening torque:

85 N·m (8.7kgf-m, 62.7ft-lb)

14.

Tighten the self-locking nut securing the rear lateral link assembly rear to the rear axle housing.

Tightening torque:

82.5N·m (8.4kgf-m, 60.8ft-lb)

15.

Remove the transmission jack.

16.

Install the electronic parking brake harness bracket.

Tightening torque:

18 N·m (1.8kgf-m, 13.3ft-lb)

17.

Install the rear ABS wheel speed sensor.

Tightening torque:

7.5N·m (0.8kgf-m, 5.5ft-lb)

18.

Install the rear disc rotor. BRAKE>Rear Disc Rotor>INSTALLATION

19.

While depressing the brake pedal, install the axle nut.

 

Be sure to use a new axle nut.

Tightening torque:

190 N·m (19.4kgf-m, 140.1ft-lb)

20.

Crimp the axle nut.

21.

Install the rear wheels. WHEEL AND TIRE SYSTEM>Tire and Wheel>INSTALLATION

22.

Connect the ground terminal to battery sensor. REPAIR CONTENTS>NOTE > BATTERY

23.

Using the Subaru Select Monitor, exit the brake maintenance mode.

24.

After the operation is completed, apply and release the parking brake five times and ensure that the brake operates normally.

25.

Inspect the wheel alignment and adjust if necessary.

26.

Perform the following adjustments using Subaru Select Monitor.

PROPELLER SHAFT / DRIVE SHAFT / AXLE > Rear Axle　
DISASSEMBLY
1.

Pull out the bushing trailing link (A) using ST1, ST2 and a press.

 

  • ST1 and ST2 have different orientations for pull-out and press-fit.

  • Pillow ball bushing (a) cannot be disassembled.

Preparation tool:

ST1: BUSHING REMOVER (20099FG000)

ST2: INSTALLER & REMOVER (BASE) (20099PA010)

PROPELLER SHAFT / DRIVE SHAFT / AXLE > Rear Axle　
ASSEMBLY
1.

Press-fit the bushing trailing link (A) using ST1, ST2 and a press.

 

Hold the bushing so that it is not tilted.

 

ST1 and ST2 have different orientations for pull-out and press-fit.

Preparation tool:

ST1: BUSHING REMOVER (20099FG000)

ST2: INSTALLER & REMOVER (BASE) (20099PA010)

PROPELLER SHAFT / DRIVE SHAFT / AXLE > Rear Axle　
INSPECTION
1.

Check that there is no deformation, cracks or other damages.

2.

Check for excessive rusting.

3.

Check the bushing for crack or excessive hardening.

4.

Check the pillow ball bushing for looseness.

PROPELLER SHAFT / DRIVE SHAFT / AXLE > Rear Hub Unit Bearing　
REMOVAL
1.

Using the Subaru Select Monitor, perform the brake maintenance mode. PARKING BRAKE>Parking Brake System>OPERATION > BRAKE MAINTENANCE MODE

2.

Disconnect the ground terminal from battery sensor. REPAIR CONTENTS>NOTE > BATTERY

3.

Remove the rear wheels. WHEEL AND TIRE SYSTEM>Tire and Wheel>REMOVAL

4.

Lift the crimped section of axle nut.

5.

Remove the axle nut while depressing the brake pedal.

6.

Remove the rear disc rotor. BRAKE>Rear Disc Rotor>REMOVAL

7.

Remove the electronic parking brake harness bracket.

8.

Remove the rear hub unit bearing and rear brake back plate.

 

  • Be careful not to damage the rear hub unit bearing.

  • Do not get closer the tool which charged magnetism to the rear hub unit bearing.

 

If it is hard to remove, use ST1 and ST2.

Preparation tool:

ST1: AXLE SHAFT PULLER (926470000)

ST2: AXLE SHAFT PULLER PLATE (28099PA110)

PROPELLER SHAFT / DRIVE SHAFT / AXLE > Rear Hub Unit Bearing　
INSTALLATION
1.

Install the rear brake back plate and rear hub unit bearing.

 

  • Always use a new bolt.

  • Be careful not to damage the spline portion of the rear drive shaft.

  • Be careful not to damage the rear hub unit bearing.

  • Do not get closer the tool which charged magnetism to the rear hub unit bearing.

Tightening torque:

85 N·m (8.7kgf-m, 62.7ft-lb)

2.

Install the electronic parking brake harness bracket.

Tightening torque:

18 N·m (1.8kgf-m, 13.3ft-lb)

3.

Install the rear disc rotor. BRAKE>Rear Disc Rotor>INSTALLATION

4.

While depressing the brake pedal, install the axle nut.

 

Be sure to use a new axle nut.

Tightening torque:

190 N·m (19.4kgf-m, 140.1ft-lb)

5.

Crimp the axle nut.

6.

Install the rear wheels. WHEEL AND TIRE SYSTEM>Tire and Wheel>INSTALLATION

7.

Connect the ground terminal to battery sensor. REPAIR CONTENTS>NOTE > BATTERY

8.

Using the Subaru Select Monitor, exit the brake maintenance mode. PARKING BRAKE>Parking Brake System>OPERATION > BRAKE MAINTENANCE MODE

9.

After the operation is completed, apply and release the parking brake five times and ensure that the brake operates normally.

PROPELLER SHAFT / DRIVE SHAFT / AXLE > Rear Hub Unit Bearing　
DISASSEMBLY

Using the ST and a press, push out the hub bolt (B) from the rear hub unit bearing (A).

 

Be careful not to tap the hub bolts with a hammer, etc. This may deform the rear hub unit bearing.

 

Rear hub unit bearing cannot be disassembled.

Preparation tool:

ST: HUB STAND (28399AG000)

PROPELLER SHAFT / DRIVE SHAFT / AXLE > Rear Hub Unit Bearing　
ASSEMBLY
1.

Set the rear hub unit bearing and hub bolt to the ST.

 

Always use a new hub bolt.

Preparation tool:

ST: HUB STAND (28099PA080)

2.

Using a press, press-fit the hub bolt (B) until its seating surface contacts the rear hub unit bearing (A).

 

Use the 12 mm (0.5in) dia. holes of ST to prevent bolts from tilting.

PROPELLER SHAFT / DRIVE SHAFT / AXLE > Rear Hub Unit Bearing　
INSPECTION
1.

Check that there is no deformation, cracks or other damages.

2.

Check for excessive rusting.

3.

Check the following items by turning the rear tires by hand.

  • Check for smooth rotation.

  • Check for noise.

4.

Check the rear hub unit bearing for looseness.

(1)

Move the upper and lower portions of rear tire in the vertical direction.

  • Looseness exists → Go to next step.

  • No looseness → Normal.

(2)

Move the upper and lower portions of rear tire in the vertical direction with the brake pedal depressed.

  • Looseness exists → Check the ball joint, each bushing, rear suspension and axle housing.

  • No looseness → Replace the rear hub unit bearing.

5.

To perform a precise inspection, use a magnet stand and dial gauge to check for looseness in the axial direction of the rear hub unit bearing.

Service limit:

0.05 mm (0.002in)

PROPELLER SHAFT / DRIVE SHAFT / AXLE > Symptoms and causes　
INSPECTION
 

If noise occurs, identify the cause before work.

Symptoms

Problem parts etc.

Possible cause

Booming noise or vibration occurs at a specific vehicle speed.

Propeller shaft

Unbalanced propeller shaft

Deformation, damage or excessive hardening of bushing

Looseness at joint section

Companion flange of rear differential

Deformation, unbalance or loose connection of companion flange

Continuous noise during driving (frequency is proportional to vehicle speed)

Hub unit bearing

Defective hub unit bearing

Propeller shaft

Defective center bearing

Noise when turning

Drive shaft

Defective joint section