Subaru Legacy IV (2008 year). Service manual — part 292
CO(H4DOTC)-30
Coolant Filler Tank
COOLING
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 approximately 3.0
2 (3.2 US qt, 2.6 Imp
qt) of coolant. <Ref. to CO(H4DOTC)-14, DRAIN-
ING 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
Install in the reverse order of removal.
Tightening torque:
16 N·m (1.6 kgf-m, 11.8 ft-lb)
CO-02392
CO-02393
CO(H4DOTC)-31
Engine Cooling System Trouble in General
COOLING
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 Diagnos-
tic Procedure.>
h. Clogged or leaking radiator
Clean, repair or replace.
i. Engine oil mixed in engine coolant
Replace engine coolant. If there is no improvement,
check, repair and replace the engine.
j. Air/fuel mixture ratio too lean
Inspect and repair the fuel injection system. <Ref. to
EN(H4DOTC)(diag)-2, PROCEDURE, Basic Diagnos-
tic Procedure.>
k. Excessive back pressure in exhaust system
Clean or replace.
l. Insufficient clearance between piston and cylin-
der
Adjust or replace.
m. Slipping clutch
Repair or replace.
n. Dragging brake
Adjust.
o. Defective radiator fan
Inspect the radiator fan relay, engine coolant tempera-
ture 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
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 cylinder
block
Repair or replace.
f. Damaged or cracked thermostat cover
Repair or replace.
g. Leakage from radiator
Repair or replace.
Noise
a. Timing belt problem
Replace.
b. Defective radiator fan
Replace.
c. Defective water pump bearing
Replace water pump.
d. Defective water pump mechanical seal
Replace water pump.
CO(H4DOTC)-32
Engine Cooling System Trouble in General
COOLING
LU(H4DOTC)-2
General Description
LUBRICATION
1. General Description
A: SPECIFICATION
Specifications for the turbo model are included in
the LU (H4SO) section. <Ref. to LU(H4SO)-2, Gen-
eral Description.>
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст