Toyota Tundra (2015 year). Manual — part 2070
Last Modified: 9-16-2014
6.6 G
Doc ID: RM000002S5H03EX
Model Year: 2015
Model: Tundra
Prod Date Range: [08/2014 - ]
Title: 3UR-FE ENGINE MECHANICAL: CYLINDER BLOCK: INSPECTION; 2015 MY Tundra [08/2014 - ]
INSPECTION
1. INSPECT CYLINDER BLOCK FOR WARPAGE
Maximum warpage:
0.07 mm (0.00276 in.)
If the warpage is greater than the maximum, replace the cylinder block.
(b) Visually check the cylinder for vertical scratches. If deep
scratches are present, rebore all 8 cylinders. If necessary,
replace the cylinder block.
3UR-FE ENGINE MECHANICAL: CYLINDER BLOCK: INSPECTIO...
2. INSPECT CYLINDER BORE
(a) Using a cylinder gauge, measure the cylinder bore diameter
at positions A and B in the thrust and axial directions.
Reference value (New Parts):
94.000 to 94.012 mm (3.700 to 3.701 in.)
Maximum diameter:
94.200 mm (3.709 in.)
If the diameter is greater than the maximum, replace the
cylinder block.
3. INSPECT RING GROOVE CLEARANCE
(a) Using a feeler gauge, measure the clearance between a new
ITEM
SPECIFIED CONDITION
No. 1
0.020 to 0.070 mm (0.000787 to 0.00276 in.)
No. 2
0.020 to 0.060 mm (0.000787 to 0.00236 in.)
Oil
0.070 to 0.145 mm (0.00276 to 0.00571 in.)
If the clearance is not as specified, replace the piston.
4. INSPECT PISTON RING END GAP
(a) Insert the piston ring into the cylinder bore.
(b) Using a piston, push the piston ring a little beyond the
(c) Using a feeler gauge, measure the end gap.
3UR-FE ENGINE MECHANICAL: CYLINDER BLOCK: INSPECTIO...
Standard End Gap (for Type A):
ITEM
SPECIFIED CONDITION
No. 1 Compression Ring
0.23 to 0.33 mm (0.00906 to 0.0130 in.)
No. 2 Compression Ring
0.40 to 0.50 mm (0.0157 to 0.0197 in.)
Oil Ring
0.10 to 0.40 mm (0.00394 to 0.0157 in.)
Standard End Gap (for Type B):
ITEM
SPECIFIED CONDITION
No. 1 Compression Ring
0.22 to 0.32 mm (0.00866 to 0.0126 in.)
No. 2 Compression Ring
0.35 to 0.45 mm (0.0138 to 0.0177 in.)
Oil Ring
0.10 to 0.40 mm (0.00394 to 0.0157 in.)
Maximum End Gap:
ITEM
SPECIFIED CONDITION
No. 1 Compression Ring
0.42 mm (0.0165 in.)
No. 2 Compression Ring
0.55 mm (0.0217 in.)
Oil Ring
0.45 mm (0.0177 in.)
HINT:
ITEM
PAINT MARK
Type A
No. 1 Compression Ring
Blue
3UR-FE ENGINE MECHANICAL: CYLINDER BLOCK: INSPECTIO...
ITEM
PAINT MARK
No. 2 Compression Ring
Orange
Type B
No. 1 Compression Ring
Yellow
No. 2 Compression Ring
Green
If the end gap is more than the maximum, replace the piston ring. If the end gap is more than the
maximum even with a new piston ring, replace the cylinder block.
5. INSPECT PISTON SUB-ASSEMBLY WITH PIN
(a) Using a micrometer, measure the piston diameter at a
Reference value (new parts):
93.950 to 93.960 mm (3.6988 to 3.6992 in.)
Minimum diameter:
93.815 mm (3.6935 in.)
If the diameter is less than the minimum, replace the piston.
6. INSPECT PISTON OIL CLEARANCE
(a) Measure the cylinder bore diameter in the thrust direction.
(b) Subtract the piston diameter measurement from the cylinder bore diameter measurement.
Reference value (new parts):
0.040 to 0.062 mm (0.00157 to 0.00244 in.)
Maximum oil clearance:
0.385 mm (0.0152 in.)
If the oil clearance is greater than the maximum, replace all the pistons. If necessary, replace the
cylinder block.
7. INSPECT PISTON PIN OIL CLEARANCE
HINT:
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