Abstract: A protective cover assembly is disclosed for a grease fitting formed on the universal joint of a Cardan shaft. The assembly includes a cover plate, a support member and a slideable sleeve. The cover plate projects outward from a gear case and encircles a portion of the Cardan shaft which is connected between the gear case and a transmission. The support member straddles the cover plate and is attached to the gear case such that it encircles a portion of the Cardan shaft and is aligned adjacent to the universal joint. The support member has a stepped outer surface with a radially aligned attachment mechanism formed on the smaller diameter surface. The slideable sleeve protrudes onto the smaller diameter surface and the attachment mechanism cooperates with a mating surface on the sleeve to form a quick attachable and releaseable fit between the two parts.