PIN 4614319 - Caterpillar

Pressure Gauge
Inspect/Replace
1. Relieve the internal pressure from the hydraulic tank by loosening the filler/vent plug. After the pressure is relieved, tighten the plug.2. Place the machine in the NEUTRAL position. Put the hydraulic activation control lever in the LOCKED position, and turn the engine speed dial all the way clockwise (high-idle). 3. Open the battery compartment door, and read the value of the pressure gauge located on top of the bio filter.If the pressure gauge value is between 1 0.2 bars and 3 0.2 bars, the bio filter element is clean.If the pressure gauge value is 3 0.2 bars, the bio filter element is clogged. Replace the bio filter element. Refer to Bio Filter Element in the When Required portion of this manual.