−
ENGINE MECHANICAL
VALVE CLEARANCE
EM
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5
508
Author:
Date:
1996 LAND CRUISER (RM451U)
7.
INSPECT VALVE CLEARANCE
(a)
Check only the valves indicated.
S
Using a thickness gauge, measure the clearance
between the valve lifter and camshaft.
S
Record the out
−
of
−
specification valve clearance
measurements. They will be used later to determine
the required replacement adjusting shim.
Valve clearance (Cold):
Intake
0.15
−
0.25 mm (0.006
−
0.010 in.)
Exhaust
0.25
−
0.35 mm (0.010
−
0.041 in.)
(b)
Turn the crankshaft pulley 1 revolution (360
°
) and align
the its groove with timing mark ”0” of the timing chain cov-
er.
(c)
Check only the valves indicated as shown. Measure the
valve clearance (See procedure in step (a) above).
8.
Except for rear valves of No. 6 cylinder
ADJUST VALVE CLEARANCE
(a)
Remove the adjusting shim.
S
Turn the crankshaft to position the cam lobe of the
camshaft on the adjusting valve upward.
S
Position the notch of the valve lifter toward the spark
plug side.
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Version 1.00 - 12/21/2010
