DESCRIPTION AND OPERATION
Page 33
OIL FLOW CONTROL AND FILTRATION
21
Figure 21 — Lubrication System Flow Diagram
There are three filters, one by-pass and two
full-flow, attached to a housing mounted at the
lower right side of the engine. Oil flow through the
filters and the lubrication system is controlled by
seven valves, including:
앫 Safety Valve
앫 Reduction Valve
앫 By-Pass Filter Overflow Valve
앫 Full-Flow Filters Overflow Valve
앫 Piston Cooling Opening Valve
앫 Piston Cooling Control Valve
앫 Oil Cooler By-Pass Valve
The full-flow filters overflow valve directs oil flow
through the by-pass filter when the lubrication
system fills to capacity. The safety valve opens to
return oil to the oil pan when the oil pressure
reaches the set point. The oil cooler by-pass
valve prevents oil from circulating into the oil
cooler until the oil temperature reaches the set
point.
1. Gear Pump
2. Strainer
3. Safety Valve
4. Oil Distributor Housing
5. Reduction Valve
6. By-Pass Filter Overflow Valve
7. Full-Flow Filters Overflow Valve
8. Piston Cooling Opening Valve
9. Piston Cooling Control Valve
10. Oil Cooler By-Pass Valve
11. Oil Cooler
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