Engine Mechanical System

Inspection

Relief Spring
1. Check the relief plunger.
Apply engine oil on the plunger and check that it moves smoothly in the hole. If it does not, replace the plunger or the front case only in necessary cases.
2. Check the relief valve spring.
Check deformation or damage of the relief valve spring.

Specification
Free length : 43.8mm(1.7244in.)
Load : 36.3N(3.7kg, 8.21b) ± 3.9N(0.4kg, 0.9lb) / 40.1mm(1.5787in.)


Oil Pressure Switch
1. Check the continuity between the terminal and the body with an ohmmeter.
If there is no continuity, replace the oil pressure switch.




2. Check the continuity between the terminal and the body when its hole is pushed by a fine rod(A). If there is continuity with pressed, replace the switch.




3. If there is no continuity when the pressure 49.3kpa (0.5kg/cm2, 7.11psi) is applied through the oil hole, the switch is operating properly.
Check for air leakage. If air leaks, the diaphragm is broken. Replace the switch.