Subaru Legacy (2005 year). Manual - part 300

 

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Subaru Legacy (2005 year). Manual - part 300

 

 

CO(H4DOTC)-31

COOLING

Coolant Filler Tank

11.Coolant Filler Tank

A: REMOVAL

WARNING:
The radiator is pressurized. Wait until engine
cools down before working on the radiator.

1) Remove the collector cover.
2) Drain the coolant about 3.0 

2 (3.2 US qt, 2.6

Imp qt). <Ref. to CO(H4DOTC)-13, DRAINING OF
ENGINE COOLANT, REPLACEMENT, Engine
Coolant.>
3) Disconnect the engine coolant hoses from cool-
ant filler tank.
4) Remove the bolts which install the coolant filler
tank.
5) Disconnect the engine coolant hose which con-
nects the under side of coolant filler tank.
6) Remove the coolant filler tank.

B: INSTALLATION

1) Install in the reverse order of removal.

Tightening torque:

16 N

⋅

m (1.6 kgf-m, 11.8 ft-lb)

2) Fill with engine coolant. <Ref. to CO(H4DOTC)-
13, FILLING OF ENGINE COOLANT, REPLACE-
MENT, Engine Coolant.>

CO-00264

CO-00264

CO(H4DOTC)-32

COOLING

Engine Cooling System Trouble in General

12.Engine Cooling System Trouble in General

A: INSPECTION

Trouble

Possible cause

Corrective action

Overheating

a. Insufficient engine coolant

Replenish engine coolant, inspect for leakage, and 
repair it if necessary.

b. Loose timing belt

Repair or replace timing belt tensioner.

c. Oil on drive belt

Replace.

d. Malfunction of thermostat

Replace.

e. Malfunction of water pump

Replace.

f. Clogged engine coolant passage

Clean.

g. Improper ignition timing

Inspect and repair ignition control system. <Ref. to 
EN(H4DOTC)(diag)-2, PROCEDURE, Basic Diagnostic 
Procedure.>

h. Clogged or leaking radiator

Clean, repair or replace.

i. Engine oil mixed in engine coolant

Check, repair or replace the parts around engine.

j. Air/fuel mixture ratio too lean

Inspect and repair the fuel injection system. <Ref. to 
EN(H4DOTC)(diag)-2, PROCEDURE, Basic Diagnostic 
Procedure.>

k. Excessive back pressure in exhaust system

Clean or replace.

l. Insufficient clearance between piston and cylinder

Adjust or replace.

m. Slipping clutch

Correct or replace.

n. Dragging brake

Adjust.

o. Defective radiator fan

Inspect radiator fan relay, engine coolant temperature 
sensor or fan motor and replace them.

Over-cooling

a. Ambient temperature extremely low

Partly cover radiator front area.

b. Defective thermostat

Replace.

Engine coolant 
leaks

a. Loosened or damaged connecting units on hoses

Correct or replace.

b. Leakage from water pump

Replace.

c. Leakage from water pipe

Correct or replace.

d. Leakage around cylinder head gasket

Retighten cylinder head bolts or replace gasket.

e. Damaged or cracked cylinder head and crankcase Correct or replace.

f. Damaged or cracked thermostat case

Correct or replace.

g. Leakage from radiator

Correct or replace.

Noise

a. Defective drive belt

Replace.

b. Defective radiator fan

Replace.

c. Defective water pump bearing

Replace water pump.

d. Defective water pump mechanical seal

Replace water pump.

LU(H4DOTC)-2

LUBRICATION

General Description

1. General Description

A: SPECIFICATION

Lubrication method

Forced lubrication

Oil pump

Pump type

Trochoid type

Number of teeth

Inner rotor

9

Outer rotor

10

Outer rotor diameter 

× thickness

mm (in)

78 

× 12 (3.07 × 0.47)

Tip clearance between inner and outer rotors

mm (in)

0.04 — 0.14 (0.0016 — 0.0055)

Side clearance between inner rotor and pump case

mm (in)

0.02 — 0.07 (0.0008 — 0.0028)

Case clearance between outer rotor 
and pump case

Specifica-
tion

mm (in)

0.10 — 0.175 (0.0039 — 0.0069)

Performance
at oil temperature 80

°C 

(176

°F)

600 rpm

Discharge 
pressure

kPa (kgf/cm

2

, psi)

98 (1.0, 14)

Discharge 
rate

2 (US qt, Imp

qt)/min.

6.5 (6.9, 5.7) or more

6,000 rpm

Discharge 
pressure

kPa (kgf/cm

2

, psi)

588 (6.0, 85)

Discharge 
rate

2 (US qt, Imp

qt)/min.

59.0 (62.3, 51.9) or more

Relief valve working pressure

kPa (kgf/cm

2

, psi)

588 (6.0, 85)

Oil filter

Filter type

Full-flow filter type

Filtration area

cm

2

 (sq in)

(Outer diameter: 
68 mm (2.68 in))

800 (124)

(Outer diameter: 
65 mm (2.56 in))

470 (72.9)

By-pass valve opening pressure

kPa (kgf/cm

2

, psi)

160 (1.63, 23.2)

Outer diameter 

× width

mm (in)

(Outer diameter: 
68 mm (2.68 in))

68 

× 65 (2.68 × 2.56)

(Outer diameter: 
65 mm (2.56 in))

65 

× 74.4 (2.56 × 2.93)

Installation screw specifications

M 20 

×1.5

Oil pressure 
switch

Type

Immersed contact point type

Working voltage — wattage

12 V — 3.4 W or less

Warning light activation pressure

kPa (kgf/cm

2

, psi)

14.7 (0.15, 2.1)

Proof pressure

kPa (kgf/cm

2

, psi)

981 (10, 142) or more

Engine oil

Capacity (at overhaul)

2 (US qt, Imp qt)

5.0 (5.3, 4.4)

When replacing engine oil and oil filter

2 (US qt, Imp qt)

MT: 4.3 (4.5, 3.8)

AT: 4.2 (4.4, 3.7)

When replacing engine oil only

2 (US qt, Imp qt)

4.0 (4.2, 3.5)

 

 

 

 

 

 

 

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