This video illustrates the operation of a high pressure lubricator pump which is commonly installed on air or gas compressors worldwide.
List of Lubrication Videos
This video is a close up visual illustration of a pump that is bypassing oil into the lube box reservoir. When this occurs compressor parts (cylinder rings & rider bands or the rod packing gland) are not receiving the correct quantity of oil & unfortunately the operator or mechanic cannot see this problem.
This video illustrates a potential problem area with high pressure pumps where lubrication bypasses the pump due to wear or malfunction of the piston and cylinder.
This video demonstrates the lubrication path and compression stroke of a pump equipped with a sight glass.