Subaru Legacy IV (2008 year). Service manual — part 85
CO(H4SO)-26
Radiator Sub Fan and Fan Motor
COOLING
9. Radiator Sub Fan and Fan
Motor
A: REMOVAL
1) Set the vehicle on a lift.
2) Disconnect the ground cable from battery.
3) Lift up the vehicle.
4) Remove the under cover.
5) Remove the connector (B) of radiator sub fan
motor.
6) Remove the heat shield cover. (AT model)
7) Remove the ATF hose from the clip of the radia-
tor sub fan motor assembly. (AT model)
8) Lower the vehicle.
9) Remove the air intake duct (rear). <Ref. to
IN(H4SO)-8, REMOVAL, Air Intake Duct.>
10) Drain approximately 2.0
2 of coolant. <Ref. to
CO(H4SO)-13, DRAINING OF ENGINE COOL-
ANT, REPLACEMENT, Engine Coolant.>
11) Disconnect the radiator inlet hoses from the en-
gine.
12) Remove the bolts which hold the radiator sub
fan shroud to the radiator.
13) Remove the radiator sub fan motor assembly
from underneath the vehicle.
IN-00203
CO-02466
(B)
CO-02355
CO-00277
CO-00101
CO(H4SO)-27
Radiator Sub Fan and Fan Motor
COOLING
B: INSTALLATION
Install in the reverse order of removal.
Tightening torque:
7.5 N·m (0.8 kgf-m, 5.5 ft-lb)
Tightening torque:
3 N·m (0.3 kgf-m, 2.2 ft-lb)
C: DISASSEMBLY
1) Remove the clip which holds the fan motor con-
nector to the shroud.
2) Remove the nuts which hold the fan motor.
3) Remove the bolts which hold fan motor onto shroud.
D: ASSEMBLY
Assemble in the reverse order of disassembly.
Tightening torque:
5 N·m (0.5 kgf-m, 3.7 ft-lb)
Tightening torque:
3.4 N·m (0.3 kgf-m, 2.5 ft-lb)
CO-00101
CO-02355
CO-00097
CO-00098
CO-00098
CO-00097
CO(H4SO)-28
Reservoir Tank
COOLING
10.Reservoir Tank
A: REMOVAL
1) Disconnect the over flow hose connecting to the
radiator from the reservoir tank.
2) Push in the hook (A), and pull the reserve tank in
the direction of the arrow to remove.
B: INSTALLATION
Install in the reverse order of removal.
C: INSPECTION
Make sure the engine coolant level is between
“FULL” and “LOW”.
(A)
CO-00279
CO(H4SO)-29
Engine Cooling System Trouble in General
COOLING
11.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 timing 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)(diag)-2, Basic Diagnostic Procedure.>
h. Clogged or leaking radiator
Clean, repair or replace.
i. Engine oil mixed in engine coolant
Replace the engine coolant. If defective is not improved,
check, repair and replace the engine parts.
j. Air/fuel mixture ratio too lean
Inspect and repair the fuel injection system. <Ref. to
EN(H4SO)(diag)-2, 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. 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.
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст