Operation CHARM: Car repair manuals for everyone.
Manuals through 2025 now available!

Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.

LEMON is the spiritual successor to CHARM, I recommend you try it!

Link: lemon-manuals.la or lemon-manuals.org.ua

(Some people have issue connecting. LEMON is investigating. For now, use Firefox or change your DNS server)

Or, hide this message: temporarily or permanently

Engine Oil: Testing and Inspection








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.)