Chapter IV Disassembly & Repair
- 22 -
c. Camshaft/crankshaft
When assembling camshaft, align the camshaft gear wheel to the
Reference sign of timing gear (pinion of crankshaft) for assembly.
d. Check
Check of piston
Check the contact between piston and cylinder,
defects of ring groove, erosion at the top, crack, etc.
It shall be replaced for severe damages (e.g. crack).
Remove carbon deposition
Carbon deposition accumulates at the edge of the
top of piston and upper opening of cylinder.
Remove carbon deposition prior to detection.
Wet the carbon deposition with kerosene, and then
remove it with blunt scraper or metallic brush.
1) Outer diameter of piston skirt
Measure the outer diameter of piston skirt with
outside micrometer. Replace the piston skirt if
it exceeds the use limit.
2) Clearance between piston and cylinder
The difference between the maximum diameter of cylinder and the diameter of the piston skirt is the clearance
between piston and cylinder.
3) Clearance to the side of the piston ring
When checking, put each ring in corresponding
piston ring slot. The piston shall be able to rotate
To Next Page
Loading...
Need help?
General
