97 Cummins 4 wheel drive. I just put a actuator in it . it still seems to not to be getting any vacuum. everything cks out on the transfer case working . any ideas . I am deff a roofer and not a mechanic

 

Probably a vacum line leak going to the actuator.

 

what he said. check the two lines going to the actuator on the axle back to the transfer case and to the vacuum pump most are a semi ridged plastic or steel and have rubber wye and tee fittings that get broken down.

 

ok I ck the lines and they looked ok . I changed the sencor on the axel. still no 4 wheel. should I take the actuator off and engage the wheel to make sure axel is working

 

I had the exact same problem on my 97, I replaced and checked and double checked everything and never could find the problem! So I said screw it and bought one of these 4x4 Posi-Lok - 4WD Engagement Systems. I have never had a problem since, well worth the money and so easy to install.

 

How much did that cost

 

for everything plus shipping i think i paid right around $200, but I got that straight from the companys web site, you might be able to find it cheaper on like ebay or amazon