INSPECTION / REPAIR
B2-81prose procedureHLA bore and diameter
- 2Measure the HLA bores in X and Y directions at two points (A and B) as shown.
- 3Measure the HLA diameters in X and Y directions at two points (A and B) as shown.
- 4Calculate the clearance between the HLA diameter and the related HLA bore. Replace the HLA and / or cylinder head if necessary.
| Specification | Value |
|---|---|
| Distortion (bore) | 30.000–30.025 mm {1.1811–1.1820 in} |
| Diameter | 29.959–29.975 mm {1.1795–1.1801 in} |
| Clearance | 0.025–0.066 mm {0.00099–0.00259 in} |
| Maximum | 0.180 mm {0.0071 in} |
Distortion (bore)
30.000–30.025 mm {1.1811–1.1820 in}
Diameter
29.959–29.975 mm {1.1795–1.1801 in}
Clearance
0.025–0.066 mm {0.00099–0.00259 in}
Maximum
0.180 mm {0.0071 in}
CYLINDER BLOCK
Cylinder block inspection
- 1Check the cylinder block for the following and repair or replace as necessary: (1) Leakage damage; (2) Cracks; (3) Scoring of wall.
- 2Using a straightedge, measure the cylinder block decks for distortion in six directions as shown.
- 3If the distortion exceeds the specification, replace the cylinder block.
- 4Measure the cylinder bores in X and Y directions at three points (A, B, and C) as shown.
| Specification | Value |
|---|---|
| Distortion | 0.15 mm {0.006 in} max. |
Distortion
0.15 mm {0.006 in} max.
Cylinder bore
Base the boring diameter on the diameter of an oversize piston. All cylinders must be of the same diameter.
Cylinder bore diameter (mm {in})
Standard
Diameter75.000–75.022 {2.9528–2.9536}
0.25 {0.01} oversize
Diameter75.250–75.272 {2.9628–2.9634}
0.50 {0.02} oversize
Diameter75.500–75.522 {2.9725–2.9733}
(1) If the cylinder bore exceeds the standard, replace the cylinder block or rebore the cylinder to oversize. (2) If the difference between measurements A and C exceeds the maximum taper, replace the cylinder block or rebore the cylinder to oversize.
| Specification | Value |
|---|---|
| Taper | 0.022 mm {0.0009 in} max. |
Taper
0.022 mm {0.0009 in} max.