Toyota Tundra (2015 year). Manual — part 2552
7. REMOVE STUD BOLT
NOTICE:
If the stud bolt is deformed or its threads are damaged, replace it.
3UR-FE ENGINE MECHANICAL: CYLINDER HEAD: DISASSEMBL...
Last Modified: 9-16-2014
6.6 G
Doc ID: RM000002OP603DX
Model Year: 2015
Model: Tundra
Prod Date Range: [08/2014 - ]
Title: 3UR-FE ENGINE MECHANICAL: CYLINDER HEAD: INSPECTION; 2015 MY Tundra [08/2014 - ]
INSPECTION
1. INSPECT CAMSHAFT OIL CLEARANCE
(a) Clean the bearing caps, camshaft housing and camshaft journals.
(b) Place the camshafts on the camshaft housing.
.
NOTICE:
Do not turn the camshaft.
(e) Install the camshaft housing
.
NOTICE:
Do not turn the camshaft.
(f) Remove the camshaft bearing caps
.
(g) Measure the Plastigage at its widest point.
Standard oil clearance:
ITEM
SPECIFIED CONDITION
No. 1 journal
0.030 to 0.065 mm (0.00118 to 0.00256 in.)
Other journals
0.025 to 0.062 mm (0.000984 to 0.00244 in.)
Maximum oil clearance:
ITEM
SPECIFIED CONDITION
No. 1 journal
0.10 mm (0.00394 in.)
Other journals
0.09 mm (0.00354 in.)
If the oil clearance is greater than the maximum, replace the
camshaft. If necessary, replace the camshaft housing.
2. INSPECT CAMSHAFT THRUST CLEARANCE
(a) Inspect the LH side camshafts.
(1) Install the LH side camshafts.
3UR-FE ENGINE MECHANICAL: CYLINDER HEAD: INSPECTION...
(2) Using a dial indicator, measure the thrust clearance while
moving the camshaft back and forth.
Standard thrust clearance:
0.08 to 0.135 mm (0.00315 to 0.00531 in.)
Maximum thrust clearance:
0.15 mm (0.00591 in.)
If the thrust clearance is greater than the maximum,
replace the camshaft housing. If the thrust surface is
damaged, replace the camshaft.
(b) Inspect the RH side camshafts.
(1) Install the RH side camshafts.
(2) Using a dial indicator, measure the thrust clearance while moving the camshaft back and forth.
Standard thrust clearance:
0.08 to 0.135 mm (0.00315 to 0.00531 in.)
Maximum thrust clearance:
0.15 mm (0.00591 in.)
If the thrust clearance is greater than the maximum, replace the camshaft housing. If the thrust
surface is damaged, replace the camshaft.
3. INSPECT COMPRESSION SPRING
Standard free length:
49.39 mm (1.94 in.)
If the free length is not as specified, replace the spring.
Maximum deviation:
1.0 mm (0.0394 in.)
Maximum angle (reference):
2°
If the deviation is greater than the maximum, replace the
spring.
4. INSPECT INTAKE VALVE
3UR-FE ENGINE MECHANICAL: CYLINDER HEAD: INSPECTION...
Standard valve stem diameter:
5.470 to 5.485 mm (0.215 to 0.216 in.)
(b) Using a vernier caliper, measure the valve head margin
thickness.
Standard margin thickness:
1.25 mm (0.0492 in.)
Minimum margin thickness:
0.50 mm (0.0197 in.)
If the margin thickness is less than the minimum, replace the
intake valve.
(c) Using a vernier caliper, measure the valve's overall length.
Standard overall length:
105.85 mm (4.17 in.)
Minimum overall length:
105.35 mm (4.15 in.)
If the overall length is less than the minimum, replace the
intake valve.
5. INSPECT EXHAUST VALVE
Standard valve stem diameter:
5.465 to 5.480 mm (0.215 to 0.216 in.)
(b) Using a vernier caliper, measure the valve head margin
thickness.
Standard margin thickness:
1.4 mm (0.0551 in.)
Minimum margin thickness:
0.50 mm (0.0197 in.)
If the margin thickness is less than the minimum, replace the
exhaust valve.
3UR-FE ENGINE MECHANICAL: CYLINDER HEAD: INSPECTION...
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