I was reading the posts between you and another 87 pathfinder owner with an engagement problem for his 4wd back in april and I was wondering if you were able to help him resolve his issue. I have an 87 that Ive only had for a few months. I went to use 4wd yesterday (we just got our first snowfall) and I'm pretty sure the hubs are not engaging. I lifted it and engaged 4hi and 4lo. the front driveshaft and the cv on the passenger side rotate but not the wheels. I have alldata for it but there is no info at all for repairing it. I'm going to go and try to clean out the hubs like you said but I'm wondering if there might be another problem that was discussed on the other forum. Thank you in advance.