Subaru Legacy (2005 year). Service manual - part 856

PS-95

POWER ASSISTED SYSTEM (POWER STEERING)

General Diagnostic Table

2. MEASUREMENT OF STEERING EFFORT

Step

Check

Yes

No

1

CHECK STEERING EFFORT.
1) Stop the vehicle on a concrete road.
2) Start the engine.
3) Run the engine at idle.
4) Install a spring scale on the steering wheel.
5) Pull the spring scale at a right angle to the 
steering wheel, and measure both right and left 
steering wheel efforts.

NOTE:

When turning the steering more quickly than
necessary from a direction to the other direction
at an engine speed over 2,000 rpm, steering ef-
fort may be heavy. This is caused by flow char-
acteristic of oil pump and is not defective.

Is the steering effort less than 
29.4 N (3.0 kgf, 6.6 lbf)?

Go to step 2.

Adjust the back-
lash.

2

CHECK STEERING EFFORT.
1) Stop the engine.
2) Pull the spring scale at a right angle to the 
steering wheel, and measure both right and left 
steering wheel efforts.

Is the steering effort less than 
294.2 N (30 kgf, 66.2 lbf)? 

Go to step 3.

Perform adjust-
ment.

3

CHECK STEERING WHEEL EFFORT.
1) Remove the universal joint.
2) Measure steering wheel effort.

Is the steering effort less than 
2.26 N (0.23 kgf, 0.51 lbf)?

Go to step 4.

Check, adjust and 
replace if neces-
sary.

4

CHECK STEERING WHEEL EFFORT.
Measure steering wheel effort.

Is the difference of steering 
effort between clockwise and 
counterclockwise less than 
20%?

Go to step 5.

Check, adjust and 
replace if neces-
sary.

5

CHECK UNIVERSAL JOINT.
Measure the swing torque of the joint (yoke of 
steering column side). <Ref. to PS-22, 
INSPECTION, Universal Joint.>

Is the swing torque of universal 
joint less than 7.3 N (0.74 kgf, 
1.64 lbf)? 

Go to step 6.

Replace with a 
new one.

6

CHECK UNIVERSAL JOINT.
Measure the swing torque of the joint (yoke of 
gearbox side). <Ref. to PS-22, INSPECTION, 
Universal Joint.>

Is the swing torque of universal 
joint less than 3.8 N (0.39 kgf, 
0.86 lbf)?

Go to step 7.

Replace with a 
new one.

7

CHECK FRONT WHEEL.
Check the front wheel.

If the front wheels have 
unsteady revolution or rattling 
and brake for dragging?

Inspect, readjust 
and replace if nec-
essary.

Go to step 8.

8

CHECK TIE-ROD ENDS.
Remove the tie-rod ends.

If the tie-rod ends of suspen-
sion have unsteady revolution 
or rattling?

Inspect and 
replace if neces-
sary.

Go to step 9.

9

CHECK BALL JOINT.
Remove the ball joint.

If the ball joints of suspension 
have unsteady revolution or 
rattling?

Inspect and 
replace if neces-
sary.

Go to step 10.

10

CHECK GEARBOX.
Measure the rotating of gearbox.
<Ref. to PS-44, TURNING RESISTANCE OF 
GEARBOX, INSPECTION, Steering Gearbox 
[LHD Model].> or <Ref. to PS-63, TURNING 
RESISTANCE OF GEARBOX, INSPECTION, 
Steering Gearbox [RHD Model].>

Is the rotating resistance of 
steering gearbox less than 
LHD model: 10.5 N (1.1 kgf, 
2.4 lbf) or RHD model: 13 N 
(1.3 kgf, 2.9 lbf)? Is the differ-
ence between clockwise and 
counterclockwise less than 
20%? 

Go to step 11.

Readjust the back-
lash, and if ineffec-
tive, replace the 
faulty parts.

PS-96

POWER ASSISTED SYSTEM (POWER STEERING)

General Diagnostic Table

3. INSPECTION OF CLEARANCE

This table lists various clearances that must be correctly adjusted to ensure the normal vehicle driving with-
out interfering noise, or any other faults.

11

CHECK GEARBOX.
Measure the sliding of gearbox.
<Ref. to PS-43, SERVICE LIMIT, INSPEC-
TION, Steering Gearbox [LHD Model].> or 
<Ref. to PS-62, SERVICE LIMIT, INSPEC-
TION, Steering Gearbox [RHD Model].>

Is the sliding resistance of 
steering gearbox less than 
LHD model: 400 N (41 kgf, 90 
lbf) or RHD model: 314 N (32 
kgf, 71 lbf)? Is the difference 
between right and left sliding 
resistances less than 20%? 

Steering effort is 
normal.

Readjust the back-
lash, and if ineffec-
tive, replace the 
faulty parts.

Location

Minimum allowance mm (in)

(1) Crossmember-to-Hose ASSY

3 (0.12)

(2) Front exhaust pipe-to-Hose ASSY (Turbo model)

15 (0.59)

(3) Front frame side-to-Hose ASSY

10 (0.39)

(4) Turbo cover-to-Hose ASSY (Turbo model)

10 (0.39)

(5) Master cylinder-to-Return hose (Turbo model)

10 (0.39)

(6) Master cylinder-to-Hose clip (Model with vehicle dynamics control (VDC))

10 (0.39)

(7) VDC H/U-to-Hose ASSY (Model with vehicle dynamics control (VDC))

5 (0.20)

(8) Air cleaner-to-Hose ASSY (Turbo model)

5 (0.20)

(9) Air boot-to-Hose ASSY

10 (0.39)

(10) Protector-to-Hose ASSY (Turbo model, DOHC non-turbo model)

10 (0.39)

(11) Blow-by hose-to-Hose ASSY (Turbo model)

8 (0.31)

(12) Over flow hose-to-Hose ASSY (Turbo model)

8 (0.31)

(13) Brake pipe-to-Return hose (Model with ABS)

10 (0.39)

(14) Front suspension bracket-to-Return hose

5 (0.20)

(15) Front wheel apron-to-Return hose

5 (0.20)

(16) VDC H/U bracket-to-Suction hose (Model with vehicle dynamics control (VDC))

5 (0.20)

(17) Air cleaner case-to-Suction hose

5 (0.20)

(18) Air intake duct-to-Suction hose (Turbo model)

10 (0.39)

(19) Air duct-to-Suction hose (Turbo model)

10 (0.39)

(20) Front wheel apron-to-Reservoir tank

5 (0.20)

(21) VDC H/U-to-Reservoir tank (Model with vehicle dynamics control (VDC))

5 (0.20)

(22) Valve housing-to-DOJ (MT model)

12 (0.47)

(23) Valve housing-to-Crossmember (Hole portion)

1 (0.04)

(24) Bracket-to-Crossmember

1 (0.04)

(25) Cylinder-to-Crossmember

5 (0.20)

(26) Elbow-to-Crossmember

1 (0.04)

(27) Cylinder-to-Exhaust pipe

18 (0.71)

(28) Universal joint coupling-to-Turbo cover (Turbo model)

15 (0.59)

(29) Universal joint column side yoke-to-Master cylinder (Closest approach point when uni-
versal joint turns by 360

°) (OUTBACK model)

5 (0.20)

(30) Cruise control-to-Hose ASSY (Model with cruise control)

10 (0.39)

(31) Universal joint coupling-to-ATF level gauge (LHD model)

10 (0.39)

(32) Boot-to-Exhaust pipe (LHD model)

18 (0.71)

(33) Return hose-to-Pressure hose

No contact between hoses

Step

Check

Yes

No

PS-97

POWER ASSISTED SYSTEM (POWER STEERING)

General Diagnostic Table

• LHD model

• RHD model

PS-00515

(4)

(1)

(6)

(15)

(20)

(21)

(22)

(23)

(29)

(30)

(32)

(33)

(24)

(25)

(26)

(27)

(5)

(8),(9)

(13),(14)

(28),(31)

(10),(11),(16)

(3)

(12)

(19)

(18)

(17)

(7)

(2)

PS-00514

(4)

(2)

(10),(11),(16)

(1)

(8),(9)

(12) (19)

(18)

(17)

(20)

(15)

(6)

(5)

(3)

(7)

(13),(14)

(21)

(27)

(24)

(26)

(25)

(23)

(22)

(28)

(29)

(33)

PS-98

POWER ASSISTED SYSTEM (POWER STEERING)

General Diagnostic Table