Oil Pump Components And Functions; Oil Pump Specifications - Yanmar 6LY3 series Service Manual

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Oil Pump Components and Functions

OIL PUMP COMPONENTS AND

The gear-type oil pump is installed on the cylinder

block (Figure 8-2, (1)). The pump is driven by the

crankshaft gear through the idler gear

(Figure 8-2, (2)). An oil pressure regulating valve

(Figure 8-2, (6)) is located on the cylinder block

behind the oil cooler.

1 – Cylinder Block

2 – Idler Gear

4 – Oil Pump

5 – Intake Filter

6 – Oil Pressure Regulating Valve

6LY3 Service Manual

Pump Test Performance

Theoretical Delivery

Delivery Pressure

(Safety Valve)

Engine Speed

Specification of Drive Gear

Angle of Pressure

Number of Teeth

Standard Pitch Diameter

32.8 cc (1.1 oz) per

94.5 L (25 gal) or more

0.8 MPa (116 psi)

66.203 mm (2.606 in.)

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