Toyota Tundra (2015 year). Manual — part 1366

(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

.

NOTICE:

bolt.

Torque:

100 N·m {1020 kgf·cm, 74ft·lbf}

(g) Remove the camshaft bearing cap

.

NOTICE:

Be careful not to damage the camshaft.

1UR-FE ENGINE MECHANICAL: ENGINE UNIT: INSPECTION; 20...

(i) Release the lock pin.

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.

1UR-FE ENGINE MECHANICAL: ENGINE UNIT: INSPECTION; 20...

(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

.

(p) Remove the flange bolt and camshaft timing gear.

6. INSPECT CAMSHAFT TIMING EXHAUST GEAR

(a) Install the camshaft bearing cap

.

HINT:

Only install the exhaust camshaft.

(b) Install the camshaft housing

.