ForConstructionPros.com

The best way to prevent cavitation damage is to ensure that the transmission has a charge pressure gauge or transducer installed so the operator can monitor this aspect of operation. "The operator must be trained to stop operating the transmission if charge pressure falls below a set value," says Casey. "And in some applications, a low charge pressure alarm and/or shutdown is advisable."

Inspect hoses and pipes
"A weak link in hydrostatic transmissions is the connecting hoses or pipes between the transmission pump and motor," says Casey. "A burst hose or pipe in service can result in the destruction of the pump and/or motor through cavitation."

Regularly inspect the high-pressure hoses or pipes between the pump and motor, and replace suspect lines before they fail.

Even small leaks can be catastrophic. "Cavitation can result from air entering the system (aeration) through loose suction fittings or damaged hoses," says Zumbusch.

But take care when replacing these components. The hoses and connectors are part of an engineered system. "Vehicle manufacturers usually work with the component suppliers to properly size not only the pumps and motors, but also the hoses and connectors to ensure proper, free-flowing connections," Zumbusch notes.