994D Wheel Loader Hydraulic System Caterpillar

Illustration 1	g00278421

The rotation of the shaft is counterclockwise when the rotation of the shaft is viewed from the drive end.

Type: Gear Pump

For the test, use SAE 10W oil that is at 65°C (150°F).

Test at full speed:

Output ... 34 L/min (9 US gpm)

Pressure ... 690 kPa (100 psi)

Pump speed ... 1710 rpm

Engine speed ... 1600 rpm

Output ... 30 L/min (8 US gpm)

Pressure ... 6900 kPa (1000 psi)

Pump speed ... 1710 rpm

Engine speed ... 1600 rpm

Test at half speed:

Output ... 17 L/min (4.5 US gpm)

Pressure ... 690 kPa (100 psi)

Pump speed ... 855 rpm

Engine speed ... 800 rpm

Output ... 15 L/min (4 US gpm)

Pressure ... 6900 kPa (1000 psi)

Pump speed ... 855 rpm

Engine speed ... 800 rpm