Re: Rules for using manual lock hubs??
If you are going to use 4wd you will need to lock the hubs in. It is ok to run the hubs locked if you are in 2wd and anticipate needing 4wd. With the 87 you can shift from 2hi to 4hi on the fly, if the hubs are already locked. You will have to shift to N to get into low. To unlock, just get out and move the hub. Some places say to lock the hubs in for a while to move the lube around. Don't know if this is necessary. I usually leave mine locked in.