engine SUBARU FORESTER 2004 Service Repair Manual
[x] Cancel search | Manufacturer: SUBARU, Model Year: 2004, Model line: FORESTER, Model: SUBARU FORESTER 2004Pages: 2870, PDF Size: 38.67 MB
Page 914 of 2870
ME(H4SO)-45
MECHANICAL
Crank Pulley
13.Crank Pulley
A: REMOVAL
1) Remove the V-belt.
2) Remove the crank pulley bolt. Use ST to lock the
crankshaft.
ST 499977400 CRANK PULLEY WRENCH
(2.0 L model)
ST 499977100 CRANK PULLEY WRENCH
(2.5 L model)
3) Remove the crank pulley.
B: INSTALLATION
1. 2.0 L MODEL
1) Install the crank pulley.
2) Install the pulley bolt.
Use ST to lock the crankshaft.
ST 499977400 CRANK PULLEY WRENCH
(1) Clean the crank pulley thread using an air
gun.
(2) Apply engine oil to the crank pulley bolt seat
and thread.
(3) Tighten the bolts temporarily with tightening
torque of 44 N⋅m (4.5 kgf-m, 33 ft-lb).
(4) Tighten the crank pulley bolts.
Tightening torque:
127 N
⋅m (13.0 kgf-m, 94.0 ft-lb)
3) Confirm that the tightening angle of crank pulley
bolt is 45° or more. If the tightening angle of crank
pulley bolt is less than 45°, conduct the following
procedures.(1) Replace the crank pulley bolts and clean
them.
Crank pulley bolt:
12369AA011
(2) Clean the crankshaft thread using an air
gun.
(3) Apply engine oil to the crank pulley bolt seat
and thread.
(4) Tighten the bolts temporarily with tightening
torque of 44 N⋅m (4.5 kgf-m, 33 ft-lb).
(5) Tighten the crank pulley bolts keeping them
in an angle between 45° and 60°.
NOTE:
Conduct the tightening procedures by confirming
the turning angle of crank pulley bolt referring to the
gauge indicated on belt cover.
4) Install the A/C belt tensioner.
5) Install the A/C belt.
2. 2.5 L MODEL
1) Install the crank pulley.
2) Install the pulley bolt.
Use ST to lock the crankshaft.
ST 499977100 CRANK PULLEY WRENCH
(1) Clean the crank pulley thread using an air
gun.
(2) Apply engine oil to the crank pulley bolt seat
and thread.
(3) Tighten the bolts temporarily with tightening
torque of 44 N⋅m (4.5 kgf-m, 33 ft-lb).
ME-00227
STST
ME-00227
STST
ME-00225
ME-00228
Page 915 of 2870
ME(H4SO)-46
MECHANICAL
Crank Pulley
(4) Tighten the crank pulley bolts.
Tightening torque:
177 N
⋅m (18.0 kgf-m, 130.2 ft-lb)
3) Confirm that the tightening angle of crank pulley
bolt is 65° or more. If the tightening angle of crank
pulley bolt is less than 65°, conduct the following
procedures.
(1) Replace the crank pulley bolts and clean
them.
Crank pulley bolt:
12369AA011
(2) Clean the crankshaft thread using an air
gun.
(3) Apply engine oil to the crank pulley bolt seat
and thread.
(4) Tighten the bolts temporarily with tightening
torque of 44 N⋅m (4.5 kgf-m, 33 ft-lb).
(5) Tighten the crank pulley bolts keeping them
in an angle between 65° and 75°.
NOTE:
Conduct the tightening procedures by confirming
the turning angle of crank pulley bolt referring to the
gauge indicated on belt cover.
4) Install the A/C belt tensioner.5) Install the A/C belt.
C: INSPECTION
1) Make sure the V-belt is not worn or otherwise
damaged.
2) Check the tension of the belt.
STST
ME-00225
ME-00228
Page 922 of 2870
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)
Page 923 of 2870
MECHANICAL
ME(H4SO)
Page
1. General Description ....................................................................................2
2. Compression .............................................................................................25
3. Idle Speed .................................................................................................26
4. Ignition Timing ...........................................................................................27
5. Intake Manifold Vacuum............................................................................28
6. Engine Oil Pressure ..................................................................................29
7. Fuel Pressure ............................................................................................30
8. Valve Clearance ........................................................................................31
9. Engine Assembly ......................................................................................34
10. Engine Mounting .......................................................................................41
11. Preparation for Overhaul ...........................................................................42
12. V-belt .........................................................................................................43
13. Crank Pulley ..............................................................................................45
14. Timing Belt Cover......................................................................................47
15. Timing Belt ................................................................................................48
16. Cam Sprocket ...........................................................................................53
17. Crank Sprocket .........................................................................................55
18. Valve Rocker Assembly ............................................................................56
19. Camshaft ...................................................................................................58
20. Cylinder Head ...........................................................................................62
21. Cylinder Block ...........................................................................................69
22. Engine Trouble in General ........................................................................91
23. Engine Noise .............................................................................................96
Page 930 of 2870
ME(H4SO)-59
MECHANICAL
Camshaft
16) Remove the plug from rear side of camshaft.
CAUTION:
Do not remove the oil seal unless necessary.
Do not scratch the journal surface when re-
moving oil seal.
B: INSTALLATION
1) Apply a coat of engine oil to the camshaft jour-
nals, and then install the camshaft.
2) Install the camshaft cap.
(1) Apply liquid gasket on the around of cam-
shaft cap.
Liquid gasket:
THREE BOND 1280B (Part No. K0877YA018)
NOTE:
Apply a coat of 3 mm (0.12 in) dia (A). liquid gasket
along edge (B) of the camshaft cap (C) mating sur-
face.
(2) Temporarily tighten the bolts (g) through (j)
in alphabetical sequence.(3) Install the valve rocker assembly.
(4) Tighten the bolts (a) through (h) in alphabet-
ical sequence.
Tightening torque:
25 N
⋅m (2.5 kgf-m, 18.1 ft-lb)
(5) Tighten the TORX bolts (i) through (n) in al-
phabetical sequence using ST.
ST 499497000 TORX PLUS
Tightening torque:
18 N
⋅m (1.8 kgf-m, 13.0 ft-lb)
ME-00264
ME-00265
(A)
(B)
(C)
ME-00266
(g)
(h)
(j) (i)
ME-00267
ME-00268
(a)
(b)(c)
(d)(e)
(f)(g)
(h)
ME-00269
(i)
(j)(m)
(n)(k)
(l)
Page 933 of 2870
ME(H4SO)-62
MECHANICAL
Cylinder Head
20.Cylinder Head
A: REMOVAL
1) Remove the V-belt.
2) Remove the crank pulley.
3) Remove the timing belt cover.
4) Remove the timing belt.
5) Remove the cam sprocket.
6) Remove the intake manifold.
7) Remove the bolt which installs A/C compressor
bracket on cylinder head.
8) Remove the valve rocker assembly.
bly.>
9) Remove the camshaft.
10) Remove the cylinder head bolts in alphabetical
sequence shown in the figure.
NOTE:
Leave the bolts (a) and (c) engaged by three or four
threads to prevent cylinder head from falling.
11) While tapping the cylinder head with a plastic
hammer, separate it from cylinder block.
12) Remove the bolts (a) and (c) to remove cylinder
head.
13) Remove the cylinder head gasket.CAUTION:
Do not scratch the mating surface of cylinder
head and cylinder block.
14) Similarly, remove the right side cylinder head.
B: INSTALLATION
1) Install the cylinder head and gaskets on cylinder
block.
CAUTION:
Use new cylinder head gaskets.
Be careful not to scratch the mating surface
of cylinder block and cylinder head.
2) Tighten the cylinder head bolts.
(1) Apply a coat of engine oil to washers and
bolt threads.
(2) Tighten all bolts to 29 N⋅m (3.0 kgf-m, 22 ft-
lb) in alphabetical sequence.
Then tighten all bolts to 69 N⋅m (7.0 kgf-m, 51 ft-
lb) in alphabetical sequence.
(3) Back off all bolts by 180° in reverse order of
installation, and back them off again by 180°.
(4) Tighten all bolts to 42 N⋅m (3.9 kgf-m, 31 ft-
lb) in alphabetical sequence.
(5) Tighten all bolts by 80° — 90° in alphabeti-
cal sequence.
(6) Tighten all bolts by 40° — 45° in alphabeti-
cal sequence.
NOTE:
Do not tighten the bolts more than 45°.
(7) Further tighten bolts (a) and (b) by 40° —
45°.
NOTE:
Ensure the total “re-tightening angle” in the [former
two steps], do not exceed 90°.
3) Install the camshaft.
4) Install the valve rocker assembly.
sembly.>
5) Install the A/C compressor bracket on cylinder
head.
6) Install the intake manifold.
ME-00278
(c)
(b)
(f)
(d) (a)(e)
ME-00278
(c)
(b)
(f)
(d) (a)(e)
ME-00279
(c)
(b)(f)
(d) (a)
(e)
Page 935 of 2870
ME(H4SO)-64
MECHANICAL
Cylinder Head
D: ASSEMBLY
1) Installation of valve spring and valve
(1) Place the cylinder head on ST.
ST 498267800 CYLINDER HEAD TABLE
(2) Coat the stem of each valve with engine oil
and insert valve into valve guide.
NOTE:
When inserting the valve into valve guide, use spe-
cial care not to damage the oil seal lip.
(3) Install the valve spring and retainer.
NOTE:
Be sure to install the valve springs with their close-
coiled end facing the seat on the cylinder head.(4) Set the ST on valve spring.
ST 499718000 VALVE SPRING REMOVER
(1) Valve (6) Retainer (11) Plug
(2) Valve guide (7) Retainer key (12) Camshaft cap
(3) Valve spring seat (8) Spark plug gasket (13) Valve rocker ASSY
(4) Oil seal (9) Camshaft
(5) Valve spring (10) Oil seal
ME-00281 (10)(9)(6) (1)
(2)(3)
(4)(5)
(7)(8)
(11)
(13) (12)
ME-00280
ST
Page 936 of 2870
ME(H4SO)-65
MECHANICAL
Cylinder Head
(5) Compress the valve spring, and then fit the
valve spring retainer key.
(6) After installing, tap the valve spring retainers
lightly with plastic hammer for better seating.
E: INSPECTION
1. VALVE SPRING
1) Check the valve springs for damage, free length,
and tension. Replace the valve spring if it is not
within the standard value presented in the table.
2) To measure the squareness of valve spring,
stand the spring on a surface plate and measure its
deflection at the top using a try square.
2. INTAKE AND EXHAUST VALVE OIL
SEAL
In the following case, pinch and remove the oil seal
from valve using pliers, and then replace it with a
new one.
When the lip is damaged.
When the spring is out of the specified position. When readjusting the surfaces of intake valve
and valve sheet.
When replacing the intake valve guide.
1) Place the cylinder head on ST1.
2) Using ST2, press-fit the oil seal.
CAUTION:
Apply engine oil to oil seal before press-fit-
ting.
When press-fitting oil seal, do not use ham-
mer or strike in.
Differentiate between intake valve oil seal
and exhaust valve oil seal by noting their differ-
ence in color.
ST1 498267800 CYLINDER HEAD TABLE
ST2 498857100 VALVE OIL SEAL GUIDE
Color of rubber part:
Intake [Black]
Exhaust [Brown]
Color of spring part:
Intake [Silver]
Exhaust [Silver]
F: ADJUSTMENT
1. CYLINDER HEAD
1) Make sure that no crack or other damage exists.
In addition to visual inspection, inspect important
areas by means of red lead check.
Also make sure that gasket installing surface
shows no trace of gas and water leaks.
2) Place the cylinder head on ST.
ST 498267800 CYLINDER HEAD TABLE
3) Measure the warping of the cylinder head sur-
face that mates with crankcase using a straight
edge and thickness gauge.
If the warping exceeds the limit, regrind the surface
with a surface grinder.
Warping limit:
0.05 mm (0.0020 in)
Grinding limit:
0.1 mm (0.004 in)
Standard height of cylinder head:
97.5 mm (3.839 in)
(A) Retainer
(B) Valve spring
Free length 54.30 mm (2.1378 in)
Squareness 2.5°, 2.4 mm (0.094 in)
Tension/spring
height215 — 246 N
(21.9 — 25.1 kgf, 48.2 — 55.3 lb)/
45.0 mm (1.772 in)
527 — 582 N
(53.7 — 59.3 kgf, 118.1 — 130.8 lb)/
34.7 mm (1.366 in)
ME-00282
(B)(B)
(A)
ME-00283
ME-00284
ST1
ST2
Page 938 of 2870
ME(H4SO)-67
MECHANICAL
Cylinder Head
(2) Insert the ST2 into valve guide and press it
down to remove valve guide.
ST1 498267800 CYLINDER HEAD TABLE
ST2 499767200 VALVE GUIDE REMOVER
(3) Turn the cylinder head upside down and
place ST as shown in the figure.
Intake side:
ST 499767700 VALVE GUIDE ADJUSTER
Exhaust side:
ST 499767800 VALVE GUIDE ADJUSTER
(4) Before installing new oversize valve guide,
make sure that neither scratches nor damages
exist on the inside surface of valve guide holes
in cylinder head.
(5) Put new valve guide, coated with sufficient
oil, in the cylinder, and then insert the ST1 into
valve guide. Press in until the valve guide upper
end is flush with the upper surface of ST2.ST1 499767200 VALVE GUIDE REMOVER
Intake side:
ST2 499767700 VALVE GUIDE ADJUSTER
Exhaust side:
ST2 499767800 VALVE GUIDE ADJUSTER
(6) Check the valve guide protrusion.
Valve guide protrusion: L
Intake
20.0 — 20.5 mm (0.787 — 0.807 in)
Exhaust
16.5 — 17.0 mm (0.650 — 0.669 in)
(7) Ream the inside of valve guide with ST.
Gently rotate the reamer clockwise while press-
ing it lightly into valve guide, and return it also ro-
tating clockwise. After reaming, clean the valve
guide to remove chips.
CAUTION:
Apply engine oil to the reamer when reaming.
If the inner surface of the valve guide is torn,
the edge of the reamer should be slightly
ground with an oil stone.
If the inner surface of the valve guide be-
comes lustrous and the reamer does not chips,
use a new reamer or remedy the reamer.
(A) Valve guide
ME-00290
ST2
ST1
(A)
ME-00291
ST
(A) Valve guide
ST2
ME-00292
ST1
ME-00293(A)L
Page 940 of 2870
ME(H4SO)-69
MECHANICAL
Cylinder Block
21.Cylinder Block
A: REMOVAL
NOTE:
Before conducting this procedure, drain the engine
oil completely.
1) Remove the intake manifold.
2) Remove the V-belt.
3) Remove the crank pulley.
4) Remove the timing belt cover.
5) Remove the timing belt.
6) Remove the cam sprocket.
7) Remove the crank sprocket.
8) Remove the generator and A/C compressor with
their brackets.
9) Remove the rocker cover.
10) Remove the cylinder head bolts in alphabetical
sequence shown in the figure.
NOTE:
Leave bolts (a) and (c) engaged by three or four
threads to prevent cylinder head from falling.
11) While tapping the cylinder head with a plastic
hammer, separate it from cylinder block.12) Remove the bolts (a) and (c) to remove cylinder
head.
13) Remove the cylinder head gasket.
NOTE:
Do not scratch the mating surface of cylinder head
and cylinder block.
14) Similarly, remove the right side cylinder head.
15) Remove the clutch housing cover. (MT model)
16) Remove the flywheel (MT model) or drive plate
(AT model).
Using the ST, lock the crankshaft.
ST 498497100 CRANKSHAFT STOPPER
MT model
AT model
(A) Front
ME-00296
(a)
(b)(c) (e)
(f) (A)
(d)
(A) Front
ME-00296
(a)
(b)(c) (e)
(f) (A)
(d)
NE-00297ST
ME-00298