[The Prospector]

about 4 or 5 months ago i bought an 85 Ram longbed W150 with a 318 with an automatic and for some reason my Dana 44 front axle has locking hubs and a vaccum actuator unit. the locking hubs work but when i pull the transfer case into 4 wheel drive the vaccum actuator doesn't engage. Im pretty sure that it needs to be cleaned out or just buy a cable unit but Im just wondering if anyone else has any suggestions, or has had the same problems. any of your information will help.

 

[84 Ram]

I am unfamiliar with the 4X4 vacuum actuator but, I would think that the first thing I would do is check to see if you have got vacuum at the valve. If you have vacuum then I would test the actuator valve.