2009 SUBARU TRIBECA Exhaust

ME(H6DO)-45
Timing Chain Assembly
MECHANICAL
13) Remove the idler sprocket (upper).
14) Remove the timing chain (LH).
15) Remove the idler sprocket (lower).
B: INSTALLATION
NOTE:
•Be careful that the foreign matter is not into or
onto assembled component during installation.
•Apply engine oil to the chain guide, chain ten-
sioner lever and idler sprocket when installing.
1) Preparation for chain tensioner installation
(1) Insert the screw, spring pin and tension rod
into tensioner body.
(2) While depressing the tensioner onto rubber
mat, twist it to shorten tension rod. Then insert
the thin pin into the hole between tension rod
and tension body to keep it.
NOTE:
Work on the rubber mat or other anti-skid materials.
2) Using the ST, align the “Top mark” on crank
sprocket to 9 o’clock position as shown in the figure
ST 18252AA000 CRANKSHAFT SOCKET
3) Align the key groove on exhaust cam sprocket to
12 o’clock position as shown in the figure.
ME-02038
ME-02039
ME-00510
ME-00511
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ME-02041

ME(H6DO)-46
Timing Chain Assembly
MECHANICAL
4) Align the intake cam sprocket as shown in the
figure.
5) Turn the crank sprocket clockwise, align the
“Top mark” to 12 o'clock position. (Piston #1 is in
TDC position)
NOTE:
Do not rotate the crank shaft and cam sprocket be-
fore completing timing chain installation.
6) Install the idler sprocket (lower).
Tightening torque:
69 N·m (7.0 kgf-m, 50.6 ft-lb)
7) Install the timing chain (LH).
(1) Align the timing mark (B) on the crank
sprocket with mark (A) on the timing chain (LH).
(2) Install the timing chain (LH) to the idler
sprocket (lower), water pump, exhaust cam
sprocket (LH) and intake cam sprocket (LH) in
this order.
NOTE:
Check that the mark on timing chain (A) and cam
sprocket (B) is aligned as same as aligned on crank
sprocket.
(3) Install the chain idler (upper).
Tightening torque:
69 N·m (7.0 kgf-m, 50.6 ft-lb)
(A) Top mark
(B) 40°
(C) 15°
(A) Gold
(B) Mark
(B)
(A)
LHRH
(C)
ME-02456
ME-00510
(A)
(B)
ME-00515
(A) Blue
(B) Mark
(A)
(B)
(A)
(B)
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ME(H6DO)-48
Timing Chain Assembly
MECHANICAL
(2) Install the timing chain (RH) to the intake
cam sprocket (RH) and exhaust cam sprocket
(RH) in this order.
NOTE:
Check that the mark on timing chain (A) and cam
sprocket (B) is aligned as same as aligned on crank
sprocket.
(3) Install the chain guide (RH).
(4) Install the chain tensioner lever (RH).
Tightening torque:
16 N·m (1.6 kgf-m, 12 ft-lb)
(5) Install the chain guide (RH: between cams).
Tightening torque:
6.4 N·m (0.65 kgf-m, 4.7 ft-lb)
NOTE:
Use a new installing bolt.
(6) Install the chain tensioner (RH).
Tightening torque:
16 N·m (1.6 kgf-m, 12 ft-lb)
(7) Adjust the clearance between chain guide
(RH) and chain guide (center) within 8.4 — 8.6
mm (0.331 — 0.339 in). Install the chain guide
(center).
Tightening torque:
7.8 N·m (0.8 kgf-m, 5.8 ft-lb)
NOTE:
Use a new installing bolt.
(8) Check that each mark on the sprocket and
timing chain is matched, and then draw out the
stopper pin from chain tensioner.
(A) Gold
(B) Mark
(A) Chain guide (RH)
(B) Chain tensioner lever (RH)
(A)
(A)
(B)
(B)
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ME-02033
(A)
(B)
ME-02032
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ME-00521

ME(H6DO)-49
Cam Sprocket
MECHANICAL
16.Cam Sprocket
A: REMOVAL
1) Remove the crank pulley. 41, REMOVAL, Crank Pulley.>
2) Remove the front chain cover. ME(H6DO)-42, REMOVAL, Front Chain Cover.>
3) Remove the timing chain assembly.
Assembly.>
4) Remove the cam sprocket. To lock the cam-
shaft, use the ST.
ST 499977500 CAM SPROCKET WRENCH
ST 18231AA020 CAM SPROCKET WRENCH
B: INSTALLATION
1) Install the cam sprocket. To lock the camshaft,
use the ST.
Tightening torque:
29.5 N·m (3.0 kgf-m, 21.8 ft-lb)
2) Further tighten the bolt.
Tightening angle:
Intake
45°±5°
Exhaust
25°±5°
ST 499977500 CAM SPROCKET WRENCH
ST 18231AA020 CAM SPROCKET WRENCH
3) Install the timing chain assembly.
Chain Assembly.>
4) Install the front chain cover.
Chain Cover.>
5) Install the crank pulley. INSTALLATION, Crank Pulley.>
C: INSPECTION
1) Check the cam sprocket teeth for abnormal wear
and scratches.
2) Make sure there is no free play between cam
sprocket and key.
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ME(H6DO)-56
Camshaft
MECHANICAL
(6) Measure the widest point of the plastigauge
on each journal. If oil clearance exceeds the
standard, replace the camshaft. If necessary,
replace the camshaft caps and cylinder head as
a set.
Standard:
0.037 — 0.072 mm (0.0015 — 0.0028 in)
(7) Completely remove the plastigauge.
5) Check the cam face condition; remove the minor
faults by grinding with oil stone. Measure the cam
height H. If it exceeds the standard or offset wear
occurs, replace it.
Cam height H:
Standard
Intake
HIGH 42.09 — 42.19 mm (1.6571 — 1.6610
in)
LOW1 38.14 — 38.24 mm (1.5016 — 1.5055
in)
LOW2 35.44 — 35.54 mm (1.3953 — 1.3992
in)
Exhaust
41.65 — 41.75 mm (1.6398 — 1.6437 in)
Cam base circle diameter A:
Intake
HIGH 32.0 mm (1.2598 in)
LOW1 31.84 mm (1.2535 in)
LOW2 31.84 mm (1.2535 in)
Exhaust
32.0 mm (1.2598 in)
6) Measure the thrust clearance of camshaft with
dial gauge. If the clearance exceeds the standard
or offset wear occurs, replace the caps and cylinder
head as a set. If necessary replace the camshaft.
Standard
Intake
0.075 — 0.135 mm (0.0030 — 0.053 in)
Exhaust
0.030 — 0.090 mm (0.0012 — 0.035 in)
ME-00119
ME-00120
H
A

ME(H6DO)-58
Cylinder Head
MECHANICAL
8) Install the front chain cover.
Chain Cover.>
9) Install the crank pulley.
Pulley.>
C: DISASSEMBLY
1) Set the cylinder head on ST.
ST 18250AA010 CYLINDER HEAD TABLE
2) Remove the valve lifter.
3) Set the ST on valve spring retainer. Compress
the valve spring and remove the valve spring re-
tainer key. Remove each valve and valve spring.
ST 499718000 VALVE SPRING REMOVER
NOTE:
Keep all the removed parts in order for re-installing
in their original positions.
CAUTION:
•Mark each valve to prevent confusion.
•Pay careful attention not to damage the lips
of intake valve oil seals and exhaust valve oil
seals.
D: ASSEMBLY
1) Installation of valve spring and valve:
(1) Set the cylinder head on ST.
ST 18250AA010 CYLINDER HEAD TABLE
(2) Coat the stem of each valve with engine oil
and insert the 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 spring with its close-
coiled end facing the seat on cylinder head.
•For the valve spring on intake side, install two of
them (inner and outer).
•Install the valve spring with the painted side fac-
ing to retainer.
(4) Set the ST on valve spring.
ST 499718000 VALVE SPRING REMOVER
(5) Compress the valve spring and fit the valve
spring retainer key.
(6) After installing, tap the valve spring retainers
lightly with a wooden hammer for better seating.
2) Apply oil to the surface of valve lifter and valve
shim.
3) Install the valve lifter and valve shim.
E: INSPECTION
1. CYLINDER HEAD
1) Make sure that no crack or other damages do
not exist. In addition to visual inspection, inspect
important areas using liquid penetrant tester.
Check that there are no marks of gas leaking or wa-
ter leaking on gasket installing surface.
2) Set the cylinder head on ST.
ST 18250AA010 CYLINDER HEAD TABLE
ST
ME-00545
(1) Seat
(2) Valve spring
(3) Retainer
(4) Painted face
(1)
(2)(3)
(4)
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ST
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ME(H6DO)-59
Cylinder Head
MECHANICAL
3) Measure the flatness of the cylinder head sur-
face that mates with crankcase using a straight
edge (A) and thickness gauge (B).
Flatness:
Standard
0.02 mm (0.0008 in)
Standard height of cylinder head:
124±0.05 mm (4.88±0.0020 in)
NOTE:
Uneven torque for the cylinder head nuts can
cause warping. When reinstalling, pay special at-
tention to the torque so as to tighten evenly.
2. VALVE SEAT
Inspect the intake and exhaust valve seats, and
correct the contact surfaces with a valve seat cutter
if they are defective or when valve guides are re-
placed.
Valve seat width W:
Intake
Standard
1.0 mm (0.039 in)
Exhaust
Standard
1.5 mm (0.059 in)
3. VALVE GUIDE
1) Check the clearance between valve guide and
stem. The clearance can be checked by measuring
respectively the outer diameter of valve stem and
inner diameter of valve guide with a micrometer.
Clearance between the valve guide and valve
stem:
Standard
Intake
0.030 — 0.057 mm (0.0012 — 0.0022 in)
Exhaust
0.040 — 0.067 mm (0.0016 — 0.0026 in)
2) If the clearance between valve guide and stem
exceeds the standard, replace the valve guide or
valve itself whichever shows greater amount of
wear or damaged and etc. See the following proce-
dure for valve guide replacement.
Valve guide inner diameter:
5.500 — 5.512 mm (0.2165 — 0.2170 in
Valve stem outer diameters:
Intake
5.455 — 5.470 mm (0.2148 — 0.2154 in)
Exhaust
5.445 — 5.460 mm (0.2144 — 0.2150 in)
(1) Place the cylinder head on ST1 with the
combustion chamber upward so that valve
guides fit the holes in ST1.
(2) Insert the ST2 into valve guide and press it
down to remove the valve guide.
ST1 18250AA010 CYLINDER HEAD TABLE
ST2 499765700 VALVE GUIDE REMOVER
(A)
(B)
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ME(H6DO)-60
Cylinder Head
MECHANICAL
(3) Turn the cylinder head upside down and
place the ST as shown in the figure.
ST 18251AA040 VALVE GUIDE ADJUSTER
(4) Before installing a new valve guide, make
sure that neither scratches nor damages exist
on the inner surface of valve guide holes in cyl-
inder head.
(5) Put a new valve guide, coated with sufficient
oil, in cylinder, and insert the ST1 into valve
guide. Press in until the valve guide upper end
is flush with the upper surface of ST2.
ST1 499765700 VALVE GUIDE REMOVER
ST2 18251AA040 VALVE GUIDE ADJUSTER
(6) Check the valve guide protrusion.
Valve guide protrusion L:
11.4 — 11.8 mm (0.449 — 0.465 in)
(7) Ream the inside of valve guide using ST.
Put the reamer in valve guide, and rotate the
reamer slowly clockwise while pushing it lightly.
Bring the reamer back while rotating it clock-
wise. After reaming, clean the valve guide to re-
move chips.
ST 499765900 VALVE GUIDE REAMER
NOTE:
•Apply engine oil to the reamer when reaming.
•If the inner surface of valve guide is damaged,
the edge of reamer should be slightly ground with
oil stone.
•If the inner surface of valve guide becomes lus-
trous and the reamer does not chip, use a new
reamer or remedy the reamer.
(8) Recheck the contact condition between
valve and valve seat after replacing the valve
guide.
4. INTAKE AND EXHAUST VALVE
1) Inspect the flange and stem of valve, and re-
place if damaged, worn or deformed, or if “H” ex-
ceeds the standard, or offset wear occurs.
H:
Intake (A)
Standard
1.0 mm (0.039 in)
Exhaust (B)
Standard
1.2 mm (0.047 in)
Valve overall length:
Intake (A)
99.7 mm (3.925 in)
Exhaust (B)
105.2 mm (4.142 in)
2) Put a small amount of grinding compound on the
seat surface, and lap the valve and seat surface.
Install a new intake valve oil seal after lapping.
ME-00757
ST
L
ME-00130
ST1
ST2
ME-02096
H
H
(B)
(A)
90 0+1
90 0+1