2004 SUBARU FORESTER engine

PM-26
PERIODIC MAINTENANCE SERVICE
ATF
16.ATF
A: INSPECTION
CAUTION:
The level of ATF varies with fluid temperature.
Pay attention to the fluid temperature when
checking ATF level.
1) Raise the ATF temperature by driving a distance
of 5 to 10 km (3 to 6 miles). Otherwise, idle the en-
gine to raise ATF temperature to 70 — 80°C (158
— 176°F) on Subaru Select Monitor. 4AT(H4SO)-18, READ CURRENT DATA, OPERA-
TION, Subaru Select Monitor.>
2) Make sure the vehicle is level.
3) After selecting all positions (P, R, N, D, 3, 2, 1),
set the select lever in “P” range. Measure the ATF
level with the engine idling for one or two minutes.
4) Make sure that ATF level is above the center of
upper and lower level.
NOTE:
When the transmission is hot, the level should be
above the center of upper and lower marks, and
when it is cold, the level should be found below the
center of these two marks.
5) If the ATF level is below the center between up-
per and lower marks, add the recommended ATF
until the ATF level is found above the center be-
tween upper and lower marks.
CAUTION:
 Use care not to exceed the upper limit level.
 Remember that the addition of ATF to the up-
per limit mark when the transmission is cold
will result in overfilling of ATF, causing a trans-
mission failure.
6) Check ATF level after raising ATF temperature
to 70 — 80°C (158 — 176°F) by running the vehicle
or by idling the engine again.7) Check the ATF for leaks.
Check for leaks in the transmission. If there are
leaks, it is necessary to repair or replace gasket, oil
seals, plugs or other parts.
B: REPLACEMENT
1. AUTOMATIC TRANSMISSION FLUID
1) Drain the ATF by removing drain plug.
NOTE:
Before starting work, cool off ATF well.
2) Replace the gasket with a new one, and then
tighten the specified torque.
Tightening torque:
25 N·m (2.5 kgf-m, 18.1 ft-lb)
3) Fill ATF up to the middle of the “COLD” side on
level gauge by using the gauge hole.
Recommended fluid:
Dexron III type automatic transmission fluid
Fluid capacity:
Fill the same amount drained from ATF drain
plug hole.
(A) Level gauge
(B) Check position when “HOT”
(C) Upper level
(D) Lower level
(E) Check position when “COLD”
PI-00105
COLD
LFHOT LF
(A)
(C)
(D)
(C)
(D)
(E)
(B)(A) Front differential drain plug
(B) ATF drain plug
PM-00032
(B)
(A)

PM-30
PERIODIC MAINTENANCE SERVICE
Brake Line
18.Brake Line
A: INSPECTION
1. BRAKE LINE
1) Check scratches, swelling, corrosion, traces of
fluid leakage on the brake hoses or pipe joints.
2) Check the possibility of adjacent parts interfering
with brake pipes or hoses during driving, and loose
connections or clamps.
3) Check any trace of fluid leakage, scratches, etc.
on the master cylinder, wheel cylinder and pres-
sure control valve.
NOTE:
 When the brake fluid level in the reservoir tank is
lower than the specified limit, the brake fluid warn-
ing light on the combination meter will come on.
 Visually check the brake hose (using a mirror
where it is difficult to see) for any damage.
B: CHECKING
1. SERVICE BRAKE
1) Check the free play of brake pedal with a force of
less than 10 N (1 kgf, 2 lb).
Brake pedal free play:
0.5 — 2.0 mm (0.02 — 0.08 in)
2) If the free play is out of specifications above, ad-
just the brake pedal as follows.
(1) Be sure the engine is off. (No vacuum is ap-
plied to brake booster.)
(2) There should be play between brake boost-
er clevis and pin at brake pedal installing por-
tion.
[Depress brake pedal pad with a force of less
than 10 N (1 kgf, 2 lb) to a stroke of 0.5 to 2.0
mm (0.02 to 0.08 in).]
(3) Depress the surface of brake pad by hand.
(1) Front brake hose
(2) Front brake pipe
(1) Brake pipe
(2) Rear brake hose
(3) Clamp
BR-00095
(1)
(2)
(1)
(3)
(3) (2)
BR-00096
(A) Brake pedal free play
PM-00078
(A)

PM-31
PERIODIC MAINTENANCE SERVICE
Brake Line
(4) If there is no free play between clevis pin
and clevis, turn the brake switch adjusting nut
until the clearance between stopper and screw
of brake switch becomes 0.3 mm (0.012 in).
3) Check the pedal stroke.
While the engine is idling, depress the brake pedal
with a 490 N (50 kgf, 110 lb) load and measure the
distance between brake pedal and steering wheel.
With the brake pedal released, measure the dis-
tance between pedal and steering wheel again.
The difference between the two measurements
must be less than specified value. If the distance is
more than specified value, there is possibility of air
inside the hydraulic unit.
Brake pedal reserve distance: A
For Australia model
105 mm (4.13 in)/ 490 N (50 kgf , 110 lb) or less
Except for Australia model
90 mm (3.54 in)/ 490 N (50 kgf , 110 lb) or less4) Check to see if air is in the hydraulic brake line
by the feel of pedal operation. If air appears to exist
in the line, bleed it from the system.
5) Check for even operation of all brakes, using a
brake tester or by driving the vehicle for a short dis-
tance on a straight road.
2. BRAKE SERVO SYSTEM
1) With the engine off, depress the brake pedal
several times applying the same pedal force: Make
sure the travel distance should not change.
2) With the brake pedal depressed, start the en-
gine: Make sure the pedal should move slightly to-
ward the floor.
3) With the brake pedal depressed, stop the engine
and keep the pedal depressed for 30 seconds:
Make sure the pedal height should not change.
4) Check valve is built into the vacuum hose. Dis-
connect the vacuum hose to inspect function of
check valve.
Blow air into the vacuum hose from its brake boost-
er side end: Air must flow out of engine side end of
hose. Next blow air into the hose from engine side:
Air should not to brake booster side.
Replace both check valve and vacuum hose if the
check valve is faulty. Engine side of vacuum hose
is indicated by marking “ENG” as shown in illustra-
tion.
5) Check the vacuum hose for cracks or other dam-
age.
CAUTION:
When installing the vacuum hose on the engine
and brake booster, do not use soapy water or
lubricating oil on their connections.
6) Check vacuum hose to make sure it is tight and
secure.
(A) Brake switch
(B) Adjusting nut
(C) 0.3 mm (0.012 in)
(D) Stopper
(E) Clevis pin
(F) Clevis
(G) Brake pedal free play
(H) Lock nut
(I) Brake booster operating rod
(J) Play at pin
(A) Steering wheel
(B) Toe board
PM-00041
(B)
(G) (H)
(I)
(J)(C)
(D)
(E)
(F)(A)
PM-00045(B)(A) = A
1
12
2
(A) Engine side
(B) Brake booster side
(C) ENG
PM-00046
(B)
(C) (A)

PM-42
PERIODIC MAINTENANCE SERVICE
Steering System (Power Steering)
(2) Retighten the adjusting screw to 7.4 N·m
(0.75 kgf-m, 5.4 ft-lb) and back off 25°.
(3) Apply Liquid gasket to at least 1/3 of entire
perimeter of adjusting screw thread.
(4) Install the lock nut. While holding the adjust-
ing screw with a wrench, tighten the lock nut us-
ing ST.
ST 926230000 SPANNER
Tightening torque (Lock nut):
39 N·m (4.0 kgf-m, 29 ft-lb)
Hold the adjusting screw with a wrench to pre-
vent it from turning it, while tightening the lock
nut.
4. TIE-ROD
1) Check the tie-rod and tie-rod ends for bends,
scratches or other damage.
2) Check the connections of knuckle ball joints for
play, inspect for damage on dust seals, and check
free play of ball studs. If the castle nut is loose, re-
tighten it to the specified torque, then tighten further
up to 60° until the cotter pin hole is aligned.
Tightening torque:
27 N·m (2.75 kgf-m, 19.9 ft-lb)3) Check the lock nut on tie-rod end for tightness. If
it is loose, retighten it to the specified torque.
Tightening torque:
83 N·m (8.5 kgf-m, 61.5 ft-lb)
5. POWER STEERING FLUID LEVEL
NOTE:
 Check at power steering fluid temperature 20°C
(68°F); read the fluid level on the “COLD” side.
 Check at power steering fluid temperature 80°C
(176°F); read the fluid level on the “HOT” side.
1) Place the vehicle with engine stopped on a flat
and level surface.
2) Check the fluid level using the scale on the out-
side of reservoir tank (A). If the level is below “MIN”
(B), add fluid to bring it up to “MAX” (C).
NOTE:
If the fluid level is at “MAX” level or above, drain flu-
id to keep the level in specified range of indicator by
using a syringe or the like.
Recommended fluid:
Dexron III
Fluid capacity:
0.72 (0.7 US qt, 0.6 Imp qt)
6. POWER STEERING FLUID FOR LEAKS
Inspect the underside of oil pump and gearbox for
power steering system, hoses, piping and their
couplings for fluid leaks.
If fluid leaks are found, correct them by retightening
their fitting bolts (or nuts) and/or replacing their
parts.
CAUTION:
 Wipe the leakage fluid off after correcting flu-
id leaks, or a wrong diagnosis is taken later.
 Also pay attention to clearances between
hoses (or pipings) and other parts when in-
specting fluid leaks.
(A) Apply Liquid gasket to at least 1/3 of entire
perimeter
(A) Tie-rod end
(B) Knuckle arm
PM-00068
(A)
PM-00069
(A)
(B)
PM-00070
(A)
(C)
(B)

PM-43
PERIODIC MAINTENANCE SERVICE
Steering System (Power Steering)
7. HOSES OF OIL PUMP FOR DAMAGES
Check the pressure hose and return hose of oil
pump for crack, swell or damage. Replace the hose
with a new one if necessary.
CAUTION:
Prevent the hoses from revolving and/or turn-
ing when installing hoses.
8. POWER STEERING PIPES FOR DAM-
AGE
Check the power steering pipes for corrosion and
damage.
Replace the pipes with a new one if necessary.
9. GEARBOX BOOTS
Inspect both sides of gearbox boots as follows, and
correct the defects if necessary.
1) (A) and (B) positions of gearbox boot are fitted
correspondingly in (A) and (C) grooves of gearbox
and the rod (C).
2) Clips are fitted outside of (A) and (B) positions of
boot.
3) Boot does not have crack and hole.
NOTE:
Rotate (B) the position of gearbox boot against
twist of it produced by adjustment of toe-in, etc.
Apply grease to the groove (C).
10.FITTING BOLTS AND NUTS
Inspect the fitting bolts and nuts of oil pump and
bracket for looseness, and retighten them if neces-
sary.
NOTE:
Inspect or retighten them when engine is cold.
PM-00071
PM-00090
(C)
(B)
(A)

FUJI HEAVY INDUSTRIES LTD. G8080GE2
2004 FORESTER SERVICE MANUAL QUICK REFERENCE INDEX
ENGINE SECTION 1
This service manual has been prepared
to provide SUBARU service personnel
with the necessary information and data
for the correct maintenance and repair
of SUBARU vehicles.
This manual includes the procedures
for maintenance, disassembling, reas-
sembling, inspection and adjustment of
components and diagnostics for guid-
ance of experienced mechanics.
Please peruse and utilize this manual
fully to ensure complete repair work for
satisfying our customers by keeping
their vehicle in optimum condition.
When replacement of parts during
repair work is needed, be sure to use
SUBARU genuine parts.
All information, illustration and specifi-
cations contained in this manual are
based on the latest product information
available at the time of publication
approval.FUEL INJECTION (FUEL SYSTEM) FU(H4SO)
EMISSION CONTROL
(AUX. EMISSION CONTROL DEVICE)EC(H4SO)
INTAKE (INDUCTION) IN(H4SO)
MECHANICAL ME(H4SO)
EXHAUST EX(H4SO)
COOLING CO(H4SO)
LUBRICATION LU(H4SO)
SPEED CONTROL SYSTEM SP(H4SO)
IGNITION IG(H4SO)
STARTING/CHARGING SYSTEM SC(H4SO)
ENGINE (DIAGNOSTIC) EN(H4SO)

FUEL INJECTION (FUEL SYSTEM)
FU(H4SO)
Page
1. General Description ....................................................................................2
2. Throttle Body .............................................................................................13
3. Intake Manifold ..........................................................................................14
4. Engine Coolant Temperature Sensor........................................................25
5. Crankshaft Position Sensor.......................................................................26
6. Camshaft Position Sensor.........................................................................27
7. Knock Sensor ............................................................................................28
8. Throttle Position Sensor ............................................................................29
9. Manifold Absolute Pressure Sensor ..........................................................31
10. Intake Air Temperature Sensor .................................................................32
11. Idle Air Control Solenoid Valve .................................................................33
12. EGR Valve ................................................................................................34
13. Fuel Injector ..............................................................................................35
14. Front Oxygen (A/F) Sensor .......................................................................40
15. Rear Oxygen Sensor.................................................................................42
16. Engine Control Module (ECM) ..................................................................44
17. Main Relay ................................................................................................45
18. Fuel Pump Relay.......................................................................................46
19. Fuel ...........................................................................................................47
20. Fuel Tank ..................................................................................................48
21. Fuel Filler Pipe ..........................................................................................51
22. Fuel Pump .................................................................................................55
23. Fuel Level Sensor .....................................................................................57
24. Fuel Sub Level Sensor ..............................................................................58
25. Fuel Filter ..................................................................................................60
26. Fuel Cut Valve...........................................................................................61
27. Fuel Damper Valve ...................................................................................62
28. Fuel Delivery, Return and Evaporation Lines............................................63
29. Fuel System Trouble in General ...............................................................66

FU(H4SO)-13
FUEL INJECTION (FUEL SYSTEM)
Throttle Body
2. Throttle Body
A: REMOVAL
1) Disconnect the ground cable from battery.
2) Remove the air cleaner case. IN(H4SO)-6, REMOVAL, Air Cleaner Case.>
3) Disconnect the accelerator cable (A).
4) Disconnect the cruise control cable (B). (With
cruise control model)
5) Disconnect the connectors from idle air control
solenoid valve, throttle position sensor and mani-
fold absolute pressure sensor.
6) Disconnect the engine coolant hoses (A) from
the throttle body.7) Remove the bolts (B) which install throttle body
to the intake manifold.
B: INSTALLATION
1) Install in the reverse order of removal.
NOTE:
Replace the gasket with a new one.
Tightening torque:
THROTTLE BODY;
22 N
⋅m (2.2 kgf-m, 15.9 ft-lb)
2) Adjust the accelerator cable play. SP(H4SO)-7, ADJUSTMENT, Accelerator Pedal.>
(A) Throttle position sensor
(B) Manifold absolute pressure sensor
(C) Idle air control solenoid valve
FU-00009
FU-00251
(B)
(A)
FU-00378
(B)
(A)(C)
FU-00253
(B)
(B)
(A)(A)