2009 SUBARU TRIBECA light

ME(H6DO)-22
Idle Speed
MECHANICAL
3. Idle Speed
A: INSPECTION
1) Before checking the idle speed, check the fol-
lowing item:
(1) Check the air cleaner element is free from
clogging, ignition timing is correct, spark plugs
are in good condition, and hoses are connected
properly.
(2) Check the malfunction indicator light does
not illuminate.
2) Idle the engine.
3) Stop the engine, and turn the ignition switch to
OFF.
4) Insert the cartridge to Subaru Select Monitor.
5) Connect the Subaru Select Monitor to data link
connector.
6) Turn the ignition switch to ON and Subaru Select
Monitor switch to ON.
7) Select {Each System Check} in Main Menu.
8) Select {Engine} in Selection Menu.
9) Select {Current Data Display & Save} in Engine
Control System Diagnosis.
10) Select {Data Display} in Data Display Menu.
11) Start the engine, and read the engine idle
speed.
12) Check the idle speed when no-loaded. (Head-
light, heater fan, rear defroster, radiator fan, A/C
and etc. are OFF)
Idle speed [No load and gears in neutral]:
650±50 rpm
13) Check the idle speed when loaded. (Turn the A/
C switch to “ON” and operate the compressor for at
least one minute before measurement.)
Idle speed [A/C ON and gears in neutral]:
770±50 rpm
NOTE:
Idle speed cannot be adjusted manually, because
the idle speed is automatically adjusted. If the pre-
scribed idle speed cannot be maintained, refer to
General On-board Diagnosis Table under “Engine
Control System”. sic Diagnostic Procedure.>

ME(H6DO)-23
Ignition Timing
MECHANICAL
4. Ignition Timing
A: INSPECTION
CAUTION:
After warming-up, engine becomes very hot. Be
careful not to burn yourself at measurement.
1) Before checking the ignition timing, check the
following item:
(1) Check the air cleaner element is free from
clogging, spark plugs are in good condition, and
hoses are connected properly.
(2) Check the malfunction indicator light does
not illuminate.
2) Idle the engine.
3) Stop the engine, and turn the ignition switch to
OFF.
4) Insert the cartridge to Subaru Select Monitor.
5) Connect the Subaru Select Monitor to data link
connector.
6) Turn the ignition switch to ON and Subaru Select
Monitor switch to ON.
7) Select {Each System Check} in Main Menu.
8) Select {Engine} in Selection Menu.
9) Select {Current Data Display & Save} in Engine
Control System Diagnosis.
10) Select {Data Display} in Data Display Menu.
11) Start the engine and check the ignition timing at
idle speed.
Ignition timing [BTDC/rpm]:
15°±8°/650
If the timing is not correct, check the ignition control
system. Refer to Engine Control System. EN(H6DO)(diag)-2, Basic Diagnostic Procedure.>

ME(H6DO)-25
Engine Oil Pressure
MECHANICAL
6. Engine Oil Pressure
A: INSPECTION
1) Remove the oil pressure switch from cylinder
block. Pressure Switch.>
2) Connect the oil pressure gauge hose to cylinder
block.
3) Connect the ground cable to the battery.
4) Start the engine, and measure the oil pressure.
OIL PRESSURE (at oil temperature of 80°C
(176°F)):
Standard:
135 kPa (1.4 kgf/cm2, 20 psi) or more (at
600 rpm)
500 kPa (5.1 kgf/cm2, 73 psi) or more (at
5,000 rpm)
CAUTION:
•If the oil pressure is out of specification,
check oil pump, oil filter and lubrication line.
Diagnostics Table.>
•If the oil pressure warning light is turned ON
and oil pressure is in specification, replace the
oil pressure switch. SPECTION, General Diagnostics Table.>
5) After measuring the oil pressure, install the oil
pressure switch. LATION, Oil Pressure Switch.>
Tightening torque:
25 N·m (2.5 kgf-m, 18 ft-lb)

ME(H6DO)-35
Engine Assembly
MECHANICAL
29) Disconnect the fuel delivery hose and evapora-
tion hose.
(1) Disconnect the connector of fuel pipe by
pushing the ST in the direction of arrow.
ST 42099AE000 CONNECTOR REMOVER
(2) Remove the clamp, and disconnect the
evaporation hose from the pipe.
CAUTION:
•Collect fuel from the hose into container.
•Disconnect the hose with its end wrapped
with cloth to prevent fuel from splashing.
30) Support the engine with a lifting device and
wire ropes.
31) Support the transmission with a garage jack.
CAUTION:
Doing this is very important because the trans-
mission lowers for its own weight. This work is
also of great importance for facilitating reinstal-
lation.
CAUTION:
Before removing the engine away from trans-
mission, check to be sure no work has been
overlooked.
32) Separation of engine and transmission:
(1) Remove the starter. REMOVAL, Starter.>
(2) Remove the bolts which hold upper side of
transmission to engine.
33) Install the ST to converter case.
ST 498277200 STOPPER SET
34) Remove the engine from vehicle.
(1) Slightly raise the engine.
(2) Raise the transmission with garage jack.
(3) Move the engine horizontally until main shaft
is withdrawn from clutch cover.
(4) Slowly move the engine away from engine
compartment.
NOTE:
Be careful not to damage adjacent parts or body
panels with crank pulley, oil level gauge, etc.
35) Remove the front cushion rubbers.
(A) Transmission
(B) Garage jack
(A)
(B)
ME-00490
ME-02661
ST
ME-00492

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)
ME-00546
ST
ME-00545

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

ME(H6DO)-73
Cylinder Block
MECHANICAL
4) Check the snap ring installation groove (A) on
the piston for burr. If necessary, remove burr from
the groove so that the piston pin can lightly move.
5) Check the piston pin snap ring for distortion,
cracks and wear.
4. PISTON RING
1) If the piston ring is broken, damaged or worn, or
if its tension is insufficient, or when the piston is re-
placed, replace the piston ring with a new one of
the same size as piston.
CAUTION:
•Marks are displayed on the end of top and
second rings. When installing the ring to pis-
ton, face this mark upward.
•Oil ring consists of the upper rail, expander
and lower rail. When installing on the piston, be
careful of the direction of each rail
2) Squarely place the piston ring and oil ring in cyl-
inder, and measure the piston ring gap with a thick-
ness gauge.
3) Measure the clearance between piston ring and
piston ring groove with a thickness gauge.
NOTE:
Before measuring the clearance, clean the piston
ring groove and piston ring.
(A) Top ring
(B) Second ring
(C) Oil ring
(a) Upper rail
(b) Expander
(c) Lower rail
ME-00175
(A)
(a)
(c)
(b)
(A)
(B)
(C)
ME-00591
Standard
mm (in)
Piston ring gap
To p r i n g0.20 — 0.35
(0.0079 — 0.0138)
Second ring0.35 — 0.50
(0.0138 — 0.0197)
Oil ring0.20 — 0.60
(0.0079 — 0.0236)
Standard
mm (in)
Clearance
between piston
ring and piston
ring groove
To p r i n g0.040 — 0.080
(0.0016 — 0.0031)
Second ring0.030 — 0.070
(0.0012 — 0.0028)
Clearance between oil ring and oil
ring groove
0.045 — 0.125
(0.0018 — 0.0049)
ME-00592
ME-00178

ME(H6DO)-90
Engine Noise
MECHANICAL
29.Engine Noise
A: INSPECTION
(NOTE*)
When disconnecting the fuel injector connector, the malfunction indicator light illuminates and DTC is stored in ECM memory.
Therefore, carry out the clear memory mode and inspection
mode after connecting the fuel injector connector.
Ty p e o f s o u n d C o n d i t i o n P o s s i b l e c a u s e
Regular clicking soundSound increases as engine
speed increases.
•Valve mechanism is defective.
•Incorrect valve clearance
•Worn valve rocker
•Worn camshaft
•Broken valve spring
•Trouble of tappet
Heavy and dull clankOil pressure is low.•Worn camshaft main bearing
•Worn connecting rod bearing (large end)
Oil pressure is normal. Damaged engine mounting
High-pitched clank
Sound is noticeable when
accelerating with an overload
condition.
•Ignition timing advanced
•Accumulation of carbon inside combustion chamber
•Wrong spark plug
•Improper gasoline
Clank when engine speed is
between 1,000 and 2,000
rpms.
Sound is reduced when fuel
injector connector of noisy cyl-
inder is disconnected.
(NOTE*)
•Worn crankshaft main bearing
•Worn bearing at crankshaft end of connecting rod
Knocking sound when engine
is operating under idling speed
and engine is warm
Sound is reduced when fuel
injector connector of noisy cyl-
inder is disconnected.
(NOTE*)
•Worn cylinder liner and piston ring
•Broken or stuck piston ring
•Worn piston pin and hole at piston end of connecting rod
Sound is not reduced if each
fuel injector connector is dis-
connected in turn. (NOTE*)
•Unusually worn valve lifter
•Worn cam gear
•Worn camshaft journal bore in crankcase
Squeaky sound — • Insufficient generator lubrication
Rubbing sound — • Poor contact of generator brush and rotor
Gear scream when starting
engine—•Defective ignition starter switch
•Worn gear and starter pinion
Sound like polishing glass with
a dry cloth—•Loose drive belt
•Defective water pump shaft
Hissing sound —•Insufficient compression
•Air leakage in air intake system, hose, connection or manifold
Timing belt noise —•Loose timing belt
•Belt contacting with case/adjacent part
Va l ve t a p p e t n o i s e —•Incorrect valve clearance
•Trouble of tappet