Subaru Legacy IV (2008 year). Service manual — part 501

LU(H6DO)-5

General Description

LUBRICATION

C: CAUTION

• Wear appropriate work clothing, including a cap, protective goggles and protective shoes when performing
any work.
• Remove contamination including dirt and corrosion before removal, installation or disassembly.
• Keep the disassembled parts in order and protect them from dust and dirt.
• Before removal, installation or disassembly, be sure to clarify the failure. Avoid unnecessary removal, in-
stallation, disassembly and replacement.
• Vehicle components are extremely hot after driving. Be wary of receiving burns from heated parts.
• Be sure to tighten fasteners including bolts and nuts to the specified torque.
• Place shop jacks or rigid racks at the specified points.
• Before disconnecting connectors of sensors or units, be sure to disconnect the ground cable from battery.
• If the engine oil is spilt over exhaust pipe or the under cover, wipe it off with cloth to avoid emitting smoke
or causing a fire.
• Prepare a container and cloth to prevent scattering of oil when performing work where fuels can be spilled.
If the fuel spills, wipe it off immediately to prevent from penetrating into floor or flowing out for environmental
protection.
• Follow all government and local regulations concerning disposal of refuse when disposing oil.

D: PREPARATION TOOL

1. SPECIAL TOOL

ILLUSTRATION

TOOL NUMBER

DESCRIPTION

REMARKS

499977100

CRANK PULLEY
WRENCH

Used to stop rotation of the crank pulley when
loosening or tightening crank pulley bolts.

498547000

OIL FILTER
WRENCH

Used for removing and installing oil filter.

ST-499977100

ST-498547000

LU(H6DO)-6

Oil Pressure System

LUBRICATION

2. Oil Pressure System

A: WIRING DIAGRAM

LU-02306

E

i3

B38

B21

E2

17

E11

No.5

SBF-6

MAIN SBF

B72

3

6

B72

15

i10

31

i10

3

1

3

4 5 6

2

2

1

3 4

6 7 8 9 10

22

21

20

19

18

17

16

15

14

13

12

11

5

1 2 3 4

5 6 7 8 9

10 11 12 13 14 15 16 17 18 19 20

B38

B21

1 2 3 4

12 13 14 15

5 6 7 8

16 17 18 19

9 10 11

20 21 22

23 24 25 26 27 28 29 30 31 32 33

35

34

37

36

39

38

41

40

43

42

44

45

47

46

49

48

51

50

53

52

54

BATTERY

IGNITION
SWITCH

COMBINATION
METER

OIL PRESSURE

WARNING LIGHT

OIL PRESSURE
SWITCH

LU(H6DO)-7

Oil Pressure System

LUBRICATION

B: INSPECTION

Step

Check

Yes

No

1

CHECK COMBINATION METER.
1) Turn the ignition switch to ON. (engine OFF)
2) Check the warning light of combination
meter.

Does the warning light illumi-
nate?

Go to step 2.

Repair or replace
the combination
meter. <Ref. to IDI-
5, INSPECTION,
Combination Meter
System.>

2

CHECK HARNESS CONNECTOR BETWEEN
COMBINATION METER AND OIL PRES-
SURE SWITCH.
1) Turn the ignition switch to OFF.
2) Disconnect the connector from oil pressure
switch.
3) Turn the ignition switch to ON.
4) Measure the voltage between oil pressure
switch connector and engine ground.

Connector & terminal

(E11) No. 1 (+) — Engine ground (–):

Is the voltage 10 V or more?

Replace the oil
pressure switch.
<Ref. to
LU(H6DO)-15, Oil
Pressure Switch.>

Go to step 3.

3

CHECK COMBINATION METER.
1) Turn the ignition switch to OFF.
2) Remove the combination meter.
3) Measure the resistance of combination
meter.

Terminals

(i10) No. 3 — (i10) No. 15:

Is the resistance less than 10

:? Repair the harness

and connector.

NOTE:
In this case, repair
the following item:
• Open circuit of
harness between
combination meter
and oil pressure
switch
• Poor contact in
combination meter
connector
• Poor contact in
oil pressure switch
connector
• Poor contact of
coupling connector

Repair or replace
the combination
meter. <Ref. to IDI-
5, INSPECTION,
Combination Meter
System.>

LU(H6DO)-8

Engine Oil

LUBRICATION

3. Engine Oil

A: INSPECTION

CAUTION:
If the engine oil is spilt over exhaust pipe or the
under cover, wipe it off with cloth to avoid emit-
ting smoke or causing a fire.
1) Park the vehicle on a level surface.
2) Remove the oil level gauge and wipe away the
oil.
3) Reinsert the oil level gauge all the way. Be sure
that the oil level gauge is correctly inserted and
properly orientated.
4) Pull out the oil level gauge again, and check the
oil level. If the engine oil level is below “L” line,
make sure that there is no oil leakage from the en-
gine, then add oil to rise the level up to the “F” line.
5) After turning off the engine, wait a few minutes
for the oil to return to the oil pan before checking
the oil level.

NOTE:
• Just after driving or while the engine is warm, en-
gine oil level may over “F” line. This is caused by
thermal expansion of engine oil.
• To prevent overfilling of engine oil, do not add oil
above “F” line when the engine is cold.

B: REPLACEMENT

CAUTION:
If the engine oil is spilt over exhaust pipe or the
under cover, wipe it off with cloth to avoid emit-
ting smoke or causing a fire.
1) Set the vehicle on a lift.
2) Open the engine oil filler cap for quick draining of
engine oil.
3) Lift up the vehicle.
4) Drain engine oil by loosening the engine oil drain
plug.

NOTE:
Prepare the container for draining of engine oil.

5) Tighten the engine oil drain plug after draining
engine oil.

NOTE:
Use a new drain plug gasket.

Tightening torque:

44 N·m (4.5 kgf-m, 32.5 ft-lb)

6) Lower the vehicle.
7) Using engine oil of proper quality and viscosity,
fill engine oil through the oil filler duct to the “F” line
on the level gauge. Make sure that the vehicle is
parked on a level surface when checking oil level.

Recommended oil:

Refer to “SPECIFICATION” for the recom-
mended oil. <Ref. to LU(H6DO)-2, SPECIFI-
CATION, General Description.>

Engine oil capacity:

Refer to “SPECIFICATION” for the engine oil
capacity. <Ref. to LU(H6DO)-2, SPECIFICA-
TION, General Description.>

8) Close the engine oil filler cap.
9) Start the engine, and spreads the oil in engine
room.
10) After stopping the engine, recheck the oil level.
If necessary, add engine oil up to the “F” line on the
level gauge.

(A) Oil level gauge

(B) Engine oil filler cap

(C) “F” line

(D) “L” line

(E) Approx. 1.0

2 (1.1 US qt, 0.9 Imp qt)

L

F

(A)

(B)

(C)

(D)

(E)

LU-02330

(A) Oil level gauge

(B) Engine oil filler cap

(C) “F” line

(D) “L” line

(E) Approx. 1.0

2 (1.1 US qt, 0.9 Imp qt)

LU-02011

L

F

(A)

(B)

(C)

(D)

(E)

LU-02330