994D Wheel Loader Automatic Lubrication System Caterpillar


Air System

Usage:

994D 3TZ



Illustration 1g00609010

View of the Compartment for the Automatic Lubrication System

(1) Electric solenoid air valve. (2) Pump assembly. (3) Vent valve assembly. (4) Air regulator. (5) Air signal line.




Illustration 2g00609017

Automatic Lubrication System

(1) Electric solenoid air valve. (2) Pump assembly. (3) Vent valve assembly. (4) Air regulator. (5) Air signal line.

The air system provides approximately 830 kPa (120.0 psi) of air pressure to electric solenoid air valve (1). The Vital Information Management System (VIMS) energizes the electric solenoid air valve.

The system air pressure flows through air signal line (5). Then, the system air pressure flows to air regulator (4). The air regulator is not adjustable. Air regulator (4) limits the air pressure to pump assembly (2). This regulated air pressure operates pump assembly (2) and vent valve assembly (3). The air regulator limits the air pressure to 500 ± 20 kPa (73.0 ± 3.0 psi).

Caterpillar Information System:

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