Subaru Legacy III (2000-2003 year). Manual - part 81

 

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Subaru Legacy III (2000-2003 year). Manual - part 81

 

 

CO(H4SO)-32

COOLING

RESERVOIR TANK

11.Reservoir Tank

A: REMOVAL

1) Disconnect overflow hose from radiator filler
neck position.
2) Remove bolts which install reservoir tank onto
radiator main fan shroud.
3) Remove reservoir tank.

B: INSTALLATION

Install in the reverse order of removal.

Tightening torque:

4.9N·m (0.50 kgf-m, 3.6 ft-lb)

C: INSPECTION

Make sure the engine coolant level is between full
and low.

CO-00087

CO-00087

CO(H4SO)-33

COOLING

ENGINE COOLING SYSTEM TROUBLE IN GENERAL

12.Engine Cooling System Trouble in General

A: INSPECTION

Trouble

Corrective action

Over-heating

a. Insufficient engine coolant

Replenish engine coolant, inspect for leakage, and 
repair.

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(H4SO)-2, ENGINE, PROCEDURE, Basic 
Diagnostic Procedure.> or  <Ref. to EN(H4SOw/oOBD)-
2, PROCEDURE, Basic Diagnostic Procedure.>

h. Clogged or leaking radiator

Clean or repair, or replace.

i. Engine oil mixed in engine coolant

Replace engine coolant.

j. Air/fuel mixture ratio too lean

Inspect and repair fuel injection system.
<Ref. to EN(H4SO)-2, ENGINE, PROCEDURE, Basic 
Diagnostic Procedure.> or  <Ref. to EN(H4SOw/oOBD)-
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

Repair or replace.

n. Dragging brake

Adjust.

o. Improper transmission oil

Replace.

p. Malfunction of electric fan

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

Over-cooling

a. Atmospheric temperature extremely low

Partly cover radiator front area.

b. Malfunction of thermostat

Replace.

Engine coolant 
leaks.

a. Loosened or damaged connecting units on hoses

Repair or replace.

b. Leakage from water pump

Replace.

c. Leakage from water pipe

Repair or replace.

d. Leakage around cylinder head gasket

Retighten cylinder head bolts or replace gasket.

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

f. Damaged or cracked thermostat case

Repair or replace.

g. Leakage from radiator

Repair 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.

CO(H4SO)-34

COOLING

ENGINE COOLING SYSTEM TROUBLE IN GENERAL

MEMO:

 

 

 

 

 

 

 

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