I own a used L39 4wd that has had a fluid leak on the front left gear case since I bought it. I removed the four bolts from the axle flange and started separating axle and gear case by wedging apart with chisels. It has come apart about 1/4" and is very resistant. My question is does anyone know it something is holding it inside the axle housing? The axle spline at the differential should just slide out, right?