2009 SUBARU TRIBECA Intake

IN(H6DO)-7
Air Intake Duct
INTAKE (INDUCTION)
5. Air Intake Duct
A: REMOVAL
1) Remove the clip holding the air intake duct.
2) Remove the air intake duct.
B: INSTALLATION
Install in the reverse order of removal.
C: INSPECTION
1) Check for cracks or loose connections.
2) Check that no foreign matter is mixed in air in-
take duct.
IN-02134

IN(H6DO)-8
Resonator Chamber
INTAKE (INDUCTION)
6. Resonator Chamber
A: REMOVAL
The resonator chamber and air cleaner case are in-
tegrated into one unit; therefore, refer to “Air Clean-
er Case” for removal procedure. IN(H6DO)-5, REMOVAL, Air Cleaner Case.>
B: INSTALLATION
The resonator chamber and air cleaner case are in-
tegrated into one unit; therefore, refer to “Air Clean-
er Case” for installation procedure. IN(H6DO)-5, INSTALLATION, Air Cleaner Case.>
C: INSPECTION
Check for cracks or loose connections.

ME(H6DO)-2
General Description
MECHANICAL
1. General Description
A: SPECIFICATION
NOTE:
OS: Oversize US: undersize
Engine
Cylinder arrangementHorizontally opposed, liquid cooled,
6-cylinder, 4-stroke gasoline engine
Va l ve s y s t e m m e c h a n i s mChain driven, double overhead camshaft,
4-valve/cylinder
Inside diameter×stroke mm (in) 89.2 × 80 (3.512 × 3.150)
Displacementcm3 (cu in)3,000 (183)
Compression ratio10.7
Compression pressure (350 rpm and fully open
throttle):kPa (kgf/cm2, psi)1,275 — 1,471 (13.0 — 15.0, 185 — 213)
Number of piston rings Pressure ring: 2, Oil ring: 1
Intake valve timing
Min. advanceOpen BTDC 47°
Close ABDC 23°
Max. retardOpen ATDC 3°
Close ABDC 73°
Exhaust valve timingOpen BBDC 60°
Close ATDC 6°
Va l ve c l e a r a n c e m m ( i n )Intake0.20 +0.04 -0.06 (0.0079 +0.0016 -0.0024)
EXHAUST 0.35±0.05 (0.0138±0.020)
Idle rpm [“P” or “N” range] rpmNo load 650±50
A/C ON 770±50
Ignition order 1 → 6 →3 → 2 → 5 → 4
Ignition timing BTDC/rpm 15°±8°/650

ME(H6DO)-3
General Description
MECHANICAL
Camshaft
Thrust clearance mm (in)Intake Standard 0.075 — 0.135 (0.0030 — 0.0053)
Exhaust Standard 0.030 — 0.090 (0.0012 — 0.0035)
Cam lobe height mm (in)Intake
HIGH Standard 42.09 — 42.19 (1.6571 — 1.6610)
LOW1 Standard 38.14 — 38.24 (1.5016 — 1.5055)
LOW2 Standard 35.44 — 35.54 (1.3953 — 1.3992)
Exhaust Standard 41.65 — 41.75 (1.6398 — 1.6437)
Cam base circle diameter mm (in)Intake
HIGH Standard 32.00 (1.2598)
LOW1 Standard 31.84 (1.2535)
LOW2 Standard 31.84 (1.2535)
Exhaust Standard 32.00 (1.2598)
Journal O.D. mm (in)Fr o nt S ta n da r d 3 7. 9 46 — 3 7 . 96 3 ( 1 . 49 3 9 — 1. 4 9 46 )
Except for front Standard 25.946 — 25.963 (1.0215 — 1.0222)
Oil clearance mm (in) Standard 0.037 — 0.072 (0.0015 — 0.0028)
Cylinder
head
Flatness mm (in) Standard 0.02 (0.0008)
Inner diameter of valve lifter hole mm (in) 32.994 — 33.016 (1.2990 — 1.2998)
Standard height mm (in) 124±0.05 (4.88±0.0020)
Va l ve s e a t
Refacing angle90°
Contacting width mm (in)Intake Standard 1.0 (0.039)
Exhaust Standard 1.5 (0.059)
Va l ve g u i d eInside diameter mm (in) 5.500 — 5.512 (0.2165 — 0.2170)
Protrusion above head mm (in) 11.4 — 11.8 (0.449 — 0.465)
Va l ve
Head edge thickness mm (in)Intake Standard 1.0 (0.039)
Exhaust Standard 1.2 (0.047)
Stem outer diameter mm (in)Intake 5.455 — 5.470 (0.2148 — 0.2154)
Exhaust 5.445 — 5.460 (0.2144 — 0.2150)
Stem oil clearance mm (in)Intake Standard 0.030 — 0.057 (0.0012 — 0.0022)
Exhaust Standard 0.040 — 0.067 (0.0016 — 0.0026)
Overall length mm (in)Intake 99.7 (3.925)
Exhaust 105.2 (4.142)
Outer diameter of valve lifter mm (in) 32.959 — 32.975 (1.2976 — 1.2982)
Va l ve s p r i n g
Free length mm (in)IntakeInner 39.55 (1.5571)
Outer 41.18 (1.6213)
Exhaust 46.32 (1.8236)
SquarenessIntakeInner 2.5°1.7 mm (0.067 in)
Outer 2.5°1.8 mm (0.071 in)
Exhaust 2.5°2.0 mm (0.079 in)
Cylinder
block
Standard height mm (in) 202 (7.95)
Cylinder inner diameter mm (in) StandardA89.205 — 89.215 (3.5120 — 3.5124)
B89.195 — 89.205 (3.5116 — 3.5120)
Cylindricality mm (in) Standard 0.030 (0.0012)
Out-of-roundness mm (in) Standard 0.010 (0.0004)
Piston clearance mm (in) Standard –0.010 — 0.010 (–0.0004 — 0.0004)
PistonOuter diameter mm (in)
StandardA89.205 — 89.215 (3.5120 — 3.5124)
B89.195 — 89.205 (3.5116 — 3.5120)
0.25 (0.0098) OS 89.445 — 89.465 (3.5215 — 3.5222)
0.50 (0.0197) OS 89.695 — 89.715 (3.5313 — 3.5321)
Inner diameter of piston pin hole Standard 22.000 — 22.006 (0.8661 — 0.8664)
Piston pin
Outer diameter mm (in) Standard 21.994 — 22.000 (0.8659 — 0.8661)
Standard clearance between piston and piston
pinmm (in) Standard 0.004 — 0.008 (0.0002 — 0.0003)

ME(H6DO)-7
General Description
MECHANICAL
3. TIMING CHAIN
(1) Crank sprocket (13) Chain tensioner lever (LH) (24) Idler sprocket (upper)
(2) Oil relief case (14) Chain tensioner (LH)
(3) Inner rotor (15) Water pumpTightening torque: N·m (kgf-m, ft-lb)
(4) Outer rotor (16) O-ringT1:6.4 (0.65, 4.7)
(5) Chain guide (center) (17) Chain guide (LH)T2: 7.8 (0.8, 5.8)
(6) Intake cam sprocket (RH) (18) Chain guide (LH: between cams)T3: Sprocket.>(7) Exhaust cam sprocket (RH) (19) Timing chain (LH)
(8) Chain guide (RH: between cams) (20) Intake cam sprocket (LH)T4: 16 (1.6, 12)
(9) Timing chain (RH) (21) Exhaust cam sprocket (LH)T5: 69 (7.0, 50.6)
(10) Chain guide (RH) (22) Idler sprocket (lower)T6: Pump.>(11) Chain tensioner lever (RH) (23) Idler sprocket collar
(12) Chain tensioner (RH)
ME-02380
T6
(2)
(8)
(9)
(10)
(11)
(12)
(13)
(14)
(15)(16)
(17)
(18)(19)
(5)
T3
T3
T5
T2
T1
T1
T1
T4
T4
T4
T4
T4
(7)
(21)
(20)
(22)
(23)
(23)
(24)
(6)
(1)
(3)
(4)

ME(H6DO)-9
General Description
MECHANICAL
(1) Rocker cover (RH) (16) Cylinder head (RH) (31) Exhaust camshaft cap (Front LH)
(2) Oil switching solenoid valve (RH) (17) Gasket (32) Front camshaft cap (LH)
(3) Oil switching solenoid valve holder
(RH)
(18) Cylinder head gasket (RH) (33) Plug
(19) Oil switching solenoid valve (LH) (34) Oil pipe (LH)
(4) Oil switching solenoid valve gas-
ket
(20) Oil switching solenoid valve holder
(LH)
(35) Rocker cover (LH)

(5) Rear chain cover (21) Oil switching solenoid valve gas-
ket
Tightening torque: N·m (kgf-m, ft-lb)
(6) Oil pipe (RH)T1: Head.>(7) Oil flow control solenoid valve
(RH)
(22) Cylinder head gasket (LH)
(23) Cylinder head (LH)T2: shaft.>(8) Intake camshaft cap (Center RH) (24) Intake camshaft (LH)
(9) Intake camshaft cap (Rear RH) (25) Exhaust camshaft (LH)T3: Switching Solenoid Valve.>(10) Exhaust camshaft cap (Rear RH) (26) Oil flow control solenoid valve (LH)
(11) Exhaust camshaft cap (Center
RH)
(27) Intake camshaft cap (Rear LH)T4:6.4 (0.65, 4.7)
(28) Intake camshaft cap (Center LH)T5: 9.75 (1.0, 7.2)
(12) Exhaust camshaft cap (Front RH) (29) Exhaust camshaft cap (Rear LH)T6:16 (1.6, 12)
(13) Front camshaft cap (RH) (30) Exhaust camshaft cap (Center
LH)
T7: 60 (6.1, 44)
(14) Intake camshaft (RH)T8: 29 (3.0, 21.4)
(15) Exhaust camshaft (RH)

ME(H6DO)-10
General Description
MECHANICAL
5. CYLINDER HEAD AND VALVE ASSEMBLY
(1) Exhaust valve (7) Valve spring (Outer) (13) Exhaust valve stem seal
(2) Intake valve (8) Retainer (14) Valve spring
(3) Intake valve guide (9) Retainer key (15) Valve lifter (Exhaust)
(4) Valve spring seat (10) Shim (16) Cylinder head plug
(5) Intake valve stem seal (11) Valve lifter (Intake) (17) Cylinder head
(6) Valve spring (Inner) (12) Exhaust valve guide
ME-02024
(16)
(16)
(17)
(3)
(12)
(13)
(4)
(14)
(8)
(9)
(15)
(4) (5) (6)(7)(8)(9)(11)(10)
(1)
(2)

ME(H6DO)-16
General Description
MECHANICAL
499585500 VALVE OIL SEAL
GUIDE
Used for press-fitting of intake and exhaust valve
guide oil seals.
18253AA000 PISTON PIN
GUIDE
Used for installing piston pin, piston and connect-
ing rod.
18350AA000 CONNECTING
ROD BUSHING
REMOVER &
INSTALLER
Used for removing and installing connecting rod
bushing.
499097700 PISTON PIN
REMOVER
ASSY
Used for removing piston pin.
499977500 CAM
SPROCKET
WRENCH
Used for removing and installing intake cam
sprocket.
ILLUSTRATION TOOL NUMBER DESCRIPTION REMARKS
ST-499585500
ST18253AA000
ST18350AA000
ST-499097700
ST-499977500