2002 Toyota Tundra Access Cab SR5 Valve Clearance: Adjustments
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INSPECTION HINT: Inspect and adjust the valve clearance when the engine is cold. 1. 2. 3. 4. DRAIN ENGINE COOLANT REMOVE INTAKE AIR CONNECTOR REMOVE CYLINDER HEAD COVERS SET NO.1 CYLINDER TO TDC/COMPRESSION a. Turn the crankshaft pulley, and align its groove with the timing mark “0″ of the No. 1 timing belt cover. b. Check that the timing marks (1 dot) of the camshaft drive and driven gears are in straight line on the cylinder heads surface as shown in the illustration. If not, turn the crankshaft 1 revolution (360°) and align the marks. 5. INSPECT VALVE CLEARANCE a. Check only the valves indicated in the illustration. ^ Using a feeler gauge, measure the clearance between the valve lifter and camshaft.
INSPECTION HINT: Inspect and adjust the valve clearance when the engine is cold. 1. 2. 3. 4. DRAIN ENGINE COOLANT REMOVE INTAKE AIR CONNECTOR REMOVE CYLINDER HEAD COVERS SET NO.1 CYLINDER TO TDC/COMPRESSION a. Turn the crankshaft pulley, and align its groove with the timing mark “0″ of the No. 1 timing belt cover. b. Check that the timing marks (1 dot) of the camshaft drive and driven gears are in straight line on the cylinder heads surface as shown in the illustration. If not, turn the crankshaft 1 revolution (360°) and align the marks. 5. INSPECT VALVE CLEARANCE a. Check only the valves indicated in the illustration. ^ Using a feeler gauge, measure the clearance between the valve lifter and camshaft.
^ Record out of specification valve clearance
measurements. They will be used later to determine the required
replacement adjusting shim. Valve clearance (Cold) b. Turn the
crankshaft 2/3 of a revolution (240°), and check only the valves
indicated in the illustration. Measure the valve clearance. (See
procedure step (a)) c. Turn the crankshaft a further 2/3 of a
revolution (240°), and check only the valves indicated in the
illustration. Measure the valve clearance. (See procedure step (a)) 6.
ADJUST VALVE CLEARANCE a. Remove the adjusting shim. ^ ^ Turn the
camshaft so that the cam lobe for the valve to be adjusted faces up.
Turn the valve lifter with a screwdriver so that the notches are
perpendicular to the camshaft.
^ Using SST (A), press down the valve lifter and place SST (B) between the camshaft
and valve lifter. Remove SST (A). SST 09248-55040 (09248-05410,
09248-05420) HINT: ^ Apply SST (B) at a slight angle on the side marked
with “9″, or “7″, at the position shown in the illustration. ^ When SST
(B) is inserted too deeply, it will get pinched by the shim. To prevent
it from being stuck, insert it gently from the intake side, at a slight
angle. ^ Using a small screwdriver
and magnetic finger, remove the adjusting shim. b. Determine the
replacement adjusting shim size according to these Formula or Charts: 1.
Using a micrometer, measure the thickness of the removed shim. 2.
Calculate the thickness of a new shim so that the valve clearance comes
within the specified value.
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