4WD makes nasty CKUNK

[joekayakguy]

1989 "mostly blue" F150 extended cab 4.9, M50d Trans, BW 13-56 Transfer Case, "Automatic Hubs". tires new same size. Goes into 4WD HI & LOW fine. Comes out into 2WD fine initially, but seems to make a real nasty CLUNK as if trying to re ingage 4WD /drive shaft/ locking hub again. I was told by a local this could be a locking hub issue. I can't find an alleged control modual on the fire wall or floor board of the passenger side as the guy indicated it would be. If this could be a transfer case issue, I would like to look into it while it is out. The tranmission and tansfer case is out right now. Installing new clutch, slave cylinder & seals.

My first post. Any ideas

joekayakguy

 

[blacksnapon]

1989 "mostly blue" F150 extended cab 4.9, M50d Trans, BW 13-56 Transfer Case, "Automatic Hubs". tires new same size. Goes into 4WD HI & LOW fine. Comes out into 2WD fine initially, but seems to make a real nasty CLUNK as if trying to re ingage 4WD /drive shaft/ locking hub again. I was told by a local this could be a locking hub issue. I can't find an alleged control modual on the fire wall or floor board of the passenger side as the guy indicated it would be. If this could be a transfer case issue, I would like to look into it while it is out. The tranmission and tansfer case is out right now. Installing new clutch, slave cylinder & seals.

My first post. Any ideas

joekayakguy

the 4x4 solenoid is on the firewall, pass side, under the cowl. There is a electrical plug on top, and 2 vacuum lines under it. The solenoid is bad for water intrusion into it causing 4x4 issues, Theres a replacement solenoid that comes with a "cover", You probably will have to change the iwe actuators as well.UH, just saw the year of your truck..............nevermind!

 

[Skandocious]

Can you hear where the noise is coming from? Up at the front wheels or more below the cab where the tcase is?

The auto hubs are garbage-- they left me stranded in a snow storm. My first inclination is to blame the hubs. I advise you to replace them with manuals before they leave you stranded like they did to me.

 

[dustybumpers]

Can you hear where the noise is coming from? Up at the front wheels or more below the cab where the tcase is?

The auto hubs are garbage-- they left me stranded in a snow storm. My first inclination is to blame the hubs. I advise you to replace them with manuals before they leave you stranded like they did to me.

your hubs are ripping themselves apart. put in a set of warn hubs

 

[Skandocious]

your hubs are ripping themselves apart. put in a set of warn hubs

Are you talking to me or the OP of this thread? I replaced mine with Warn premiums years ago...