4X4 help thumping sound

[littlebigrig6.0]

Ok so this is the first time since last year I used my 4h, I just installed new warn manual hubs in replace of the auto hubs. Now I have a loud thumping sound coming from the underside. 4H engages and works, light comes on, also their is a loud squeal, the faster I go the louder both get. Please help any ideas

[littlebigrig6.0]

update, the faster I go the louder and faster the thumping gets, any help would be great

[08pwrstrokr6.4]

have you checked the axle and joints?

[littlebigrig6.0]

whats the best way to check them

[08pwrstrokr6.4]

grab and shake near the joints,shouldnt be much movement.also check your drive shaft the same way.hopefully some other guys will chime in with some ideas

[littlebigrig6.0]

Ok so I found a problem, not sure if this is the problem, the front U-joint on the front drive shaft is shot, lots of play. Any idea how to replace them and whats involved. Its the double joint.

[littlebigrig6.0]

correction the U-joint with the play is the rear double one that connects the transfer case to the front drive shaft

[08pwrstrokr6.4]

never done it but if i member correctly it should have a snap ring on one or both sides of the pins.take those off and then push out the pins with either a pin punch and hammer or a screw press of some sorts.

[littlebigrig6.0]

great thanks, im gonna get the parts from ford and give it a go

[08pwrstrokr6.4]

might want to try to find better ones.usually when something breaks on my truck i try to buy an upgraded part