Cylinder Honing
Cylinder Honing |
Special Tools |
EN-8087 Cylinder Bore Gauge
For equivalent regional tools, refer to Special Tools (LDK, LHU) .
1. |
Measure the cylinder bore for out-of-round and taper.
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2. |
Measure dimension (1) at 13 mm (1/2 in) below the head gasket surface. Measure dimension (2) at 100 mm (4 in) below the head gasket surface.
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4. |
Fine vertical scratches made by the ring ends do not, by themselves, cause excessive oil consumption. Do not hone the cylinder in order to remove these scratches.
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5. |
If the bore is glazed but otherwise serviceable, lightly break the glaze with a hone. Replace the piston rings. Refer to
Piston, Connecting Rod, and Bearing Installation (LDK, LHU)
.
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5.1. |
The honing stones must be clean, sharp, and straight.
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5.2. |
Move the hone slowly up and down to produce a 45 degree cross-hatch pattern.
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5.3. |
Clean the bore thoroughly with soap and water.
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5.4. |
Dry the bore.
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5.5. |
Rub clean engine oil in the bore.
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5.6. |
Re-measure the bore.
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6. |
If the cylinder bore is out of specification, install a new cylinder bore sleeve. Refer to
Cylinder Sleeve Removal
and
Cylinder Sleeve Installation
.
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7. |
If honing is not required, clean the cylinder bores with hot water and detergent. Apply clean engine oil to the bore after washing and drying the bore.
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