Toyota Tundra (2015 year). Manual — part 1736
3. INSPECT VALVE LASH ADJUSTER ASSEMBLY
NOTICE:
Keep the adjuster free from dirt and foreign objects.
Use only clean engine oil.
tip to press down on the check ball inside the plunger.
SST: 09276-75010
(c) Squeeze SST and the lash adjuster together to move the
plunger up and down 5 to 6 times.
Plunger moves up and down.
NOTICE:
When bleeding high-pressure air from the compression
firmly press the plunger with your fingers.
OK:
Plunger can be pressed 3 times.
If the plunger can still be compressed after pressing it 3
times, replace the lash adjuster with a new one.
4. INSPECT CAMSHAFT SUB-ASSEMBLY
(a) Inspect the camshaft for runout.
(1) Place the camshaft on V-blocks.
(2) Using a dial indicator, measure the circle runout at the center journal.
Maximum circle runout:
0.04 mm (0.00157 in.)
If the circle runout is more than the maximum, replace the camshaft.
HINT:
Check the oil clearance after replacing the camshaft.
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(b) Using a micrometer, measure the cam lobe height.
Standard cam lobe height:
ITEM
SPECIFIED CONDITION
Intake
44.291 to 44.441 mm (1.744 to 1.750 in.)
Exhaust
44.196 to 44.346 mm (1.740 to 1.746 in.)
Minimum cam lobe height:
ITEM
SPECIFIED CONDITION
Intake
44.241 mm (1.742 in.)
Exhaust
44.146 mm (1.738 in.)
If the cam lobe height is less than the minimum, replace the
camshaft.
(c) Using a micrometer, measure the journal diameter.
Standard journal diameter:
ITEM
SPECIFIED CONDITION
No. 1 journal
29.956 to 29.970 mm (1.1793 to 1.1799 in.)
Other journals
25.959 to 25.975 mm (1.0220 to 1.0226 in.)
If the journal diameter is not as specified, check the oil
clearance.
5. INSPECT CAMSHAFT TIMING GEAR
(a) Install the camshaft bearing cap
.
HINT:
Only install the intake camshaft.
(b) Install the camshaft housing
.
Do not loosen or remove the 3 bolts shown in the illustration.
bolt.
Torque:
100 N·m {1020 kgf·cm, 74ft·lbf}
(g) Remove the camshaft bearing cap
.
NOTICE:
Be careful not to damage the camshaft.
(i) Release the lock pin.
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air pressure to the two broken paths.
NOTICE:
(4) Check that the camshaft timing gear revolves in the
advance direction when reducing the air pressure applied
to the retard side path.
HINT:
This operation releases the lock pin for the most retarded
position.
(5) When the camshaft timing gear reaches the most advanced position, release the air pressure from
the retard side path and advance side path, in that order.
NOTICE:
Do not release the air pressure from the advance side path first. The gear may abruptly shift in the
retard direction and break the lock pin.
(j) Check for smooth rotation.
(1) Turn the camshaft timing gear within its movable range (21°) 2 or 3 times, but do not turn it to the
most retarded position. Make sure that the gear turns smoothly.
NOTICE:
Do not use air pressure to perform the smooth rotation check.
(k) Check the lock in the most retarded position.
(1) Confirm that the camshaft timing gear is locked at the most retarded position.
(l) Install the camshaft bearing cap
.
HINT:
Only install the intake camshaft.
(m) Install the camshaft housing
.
(o) Remove the camshaft bearing cap
.
3UR-FBE ENGINE MECHANICAL: ENGINE UNIT: INSPECTION; ...
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