Oven will not work in coachmen

You don't say weather this is a new to you oven, or one that you have used in the past that has stopped working. If it is the former, perhaps you are not using the correct procedure. Try this: When you turn the knob to "pilot" you must push it in to get the gas to flow. While pushing it in, hold a lghter to the pilot and the gas should ignite. But continue to hold the knob in until the thermocouple adjacent to the pilot heats up. This should take about 30 seconds. When you release the knob the pilot should stay lit. If it does not repeat the procedure holding the knob a little longer to make sure the thermocouple has enough time to heat up.