Flow Diagram, Lubricating Oil System
B3.9 and B5.9 Series Engines
Section 7 - Lubricating Oil System - Group 07
Lubrication for the Turbocharger
1. Oil supply
2. Oil drain.
The turbocharger receives filtered, cooled, and pressurized lubricating oil through a supply line from the filter head.
A drain line connected to the bottom of the turbocharger housing returns the lubricating oil to the lubricating oil pan
through a fitting in the cylinder block.