Valve Clearance - Subaru Legacy 2005 Service Manual

MECHANICAL

8. Valve Clearance

A: INSPECTION
Inspection and adjustment of valve clearance
should be performed while engine is cold.
1) Set the vehicle on a lift.
2) Lift-up the vehicle.
3) Remove the under cover.
4) Lower the vehicle.
5) Disconnect the ground cable from battery.
6) Remove the timing belt cover (LH).
7) When inspecting #1 and #3 cylinders:
(1) Disconnect the spark plug cords from spark
plugs RH side. <Ref. to IG(H4SO 2.0)-5, RH
SIDE, REMOVAL, Spark Plug.>
(2) Disconnect the PCV hose from rocker cover
(RH).
(3) Remove the bolts, then remove the rocker
cover (RH).
8) When inspecting #2 and #4 cylinders:
(1) Disconnect the spark plug cords from spark
plugs (LH side). <Ref. to IG(H4SO 2.0)-5, LH
SIDE, REMOVAL, Spark Plug.>
(2) Disconnect the PCV hose from rocker cover
(LH).
(3) Remove the bolts, then remove the rocker
cover (LH).
Valve Clearance
9) Set #1 cylinder piston to top dead center of com-
pression stroke by rotating the crank pulley clock-
wise using socket wrench.
NOTE:
When the arrow mark (A) on cam sprocket (LH)
comes exactly to the top, #1 cylinder piston is
brought to the top dead center of compression
stroke.
10) Measure #1 cylinder valve clearance using
IN-00203
thickness gauge.
CAUTION:
• Insert the thickness gauge (A) in as horizon-
tally as possible with respect to the valve stem
end face.
• Measure the exhaust valve clearances while
lifting-up the vehicle.
Valve clearance (Standard):
Intake
Exhaust
ME-00199
11) If necessary, adjust the valve clearance. <Ref.
to ME(H4SO 2.0)-29, ADJUSTMENT, Valve Clear-
ance.>
ME(H4SO 2.0)-28
±
0.20 0.04 mm (0.0079
±
0.25 0.04 mm (0.0098
( A )
ME-00200
±
0.0016 in)
±
0.0016 in)
( A )
ME-00201