I have a built in Whirlpool electric double oven (RBD305PVS02). Each time I start the upper oven (and maybe the lower oven, but we don't use it as often), there is a loud noise coming from the top venting area. Noise lasts various durations of time, but does stop (seemingly as the oven is nearly preheated).

The research I've done indicates this noise is likely the blower motor (part # PS2348323) needing cleaning & lubrication or needing replacement. I'm prepared to do this myself, but I can't find instructions for accessing the blower motor. I think the whole unit needs to be removed from the cabinet, but I want to be sure. Can anyone help me with a service manual? Also, any other suggestions or comments would be appreciated. Thanks.

Thanks, denman. I've seen this service manual for other models. I didn't realize it would be the same one for mine. Thanks again.