Just because it seems like a man's job, it does not mean that you would not do well at it. Women can have a real advantage in this field. Their natural nurturing skills may come in handy when a customer is disappointed in piece of equipment. You can listen intently and show concern more easily than some men. If you approach it right, you can also have a calming effect on an angry customer.
Women tend to be more thorough and patient.
This will help you fix the problem right and prevent possible future problems. You may feel disadvantage where strength is concerned, but women are more likely to get help in lifting something without even asking for it. These may seem like small advantages, but they are real. There are many different types of field service jobs. The U.S. is full of them since we have a service economy, meaning many corporations are based on providing a service.