Gauge Plug Location
A gauge plug is permanently installed in the oil line or in an oil gallery. The ideal location of the gauge plug will change with the machine model, but in all installations, the gauge plug should be installed in a location where it is easy to access away from any moving parts, protected from damage, and before any in-line filtration system (if applicable).
Sampling Procedure (with Gauge Plug)
- Step 1 Remove dust cap from the gauge plug on the machine, and with the engine at low idle, purge the gauge plug by discharging a small amount in a waste container. The sample bottle should not be used for purging.
- Step 2 Push the hose assembly onto the gauge plug and fill the bottle to the indicated level. Disconnect probe and replace the dust cap on the gauge plug. When taking samples from additional equipment ensure that the hose assembly has been thoroughly flushed with used oil from the equipment before taking a representative sample.
General Sampling Guidelines
- Oil sampling must be done during normal operation of the equipment or within 30 minutes after machine shut down. This ensures that the oil is warm and truly representative of the conditions within the compartment.
- When using the vacuum pump method, ensure that the sample is drawn from about the mid point or within the working level of the oil in the compartment and not from the bottom where sludge accumulates.
- It is important that the sample container is totally clean and free of moisture before the sample is taken.
- The container should be properly sealed to prevent any contamination or loss of oil during transit.
- Ensure the sample information sheet is completely and correctly filled out.
- Courier or mail the sample to the Laboratory immediately, so as to receive the analysis results as soon as is possible.
- For more information regarding the use of sampling valves or general oil sampling questions, including vacuum sampling pumps, please contact your nearest WearCheck laboratory.