Thank you for your replies cruiser54 I really appreciate it.
Actually my Brake is somewhat loose, could it be due to that brake booster fitting not having vacuum?

If the fitting i'm looking for is visible in those pictures i posted , can you please point to where it is exactly using some arows.
if it is not visible i will post more clear pictures and more at angles.

 

It's not visible in your photos. I looked. Take a shot from above. Maybe this will help:

 

More pictures

 

on the 4th row of pictures(from top) it shows youre brake booster the big round thing behind where you add brake fluid, the tube that comes off of that on top of the intake manifold is going to where cruiser54 said you should be looking for the vacuum hook up. so it seems like yours is differant or someone changed it or relocated it. im sure he will chime in to help you but you might have to move the brake booster line to the place where the cap is so that you can rehook youre vacuum up the way it should be. got any friends with an xj. or a junkyard you could go to to try and see if you can get a visual on how it should hook up. could also look for one on a car lot and take some pics. as you are quite good at the picture thing good luck

 

this is my vac diagram

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thank you so much ,you are exactly right , my friend who previously worked at jeep repairs told me that they have relocated or ignored (something like that) the brake booster , but strangely the brake works fine so far not very great though , howerver i will try to connect the vacuum line to the fitting where the brake booster hose is connected and see if the problem is resolved.

 

figure out how to get that broken line into the port with the cap and see what happens. if you can strech it that far just shove it in the hole and electric tape the crap out of it see if it fixes it if so, that you know you are on the right track. dont leave it that way cause the tape will only last a short time till the glue melts and it becomes a sticky mess

 

1989 renix switch brake to plug put can on one brakes on ...done

 

I'll do that and get back to you ASAP.

 

yours....after

 

Great photos freegdr. Exactly what he needed. I love the squiggly colored lines. I gotta learn how to do that.

 

Finally the problem is solved , everything is in its own place .
I switched the Brake booster hose back to its normal position just like you guys said.
and finally connected the Vaccum line from the cannister ball back to fitting where it belongs ,and now the Air Conditioner is working great, back to normal, blowing air in central vents.

I feel my brake is now better than before.

Thank you so much guys , I don't know what to say , I truely appreciate what you did for me.
Here is some post-repair pictures.

 

Here is some shots of my lovely 1990 Jeep Cherokee;

 

damn dude you work quick, make sure that hose wont collapse under vacuum looks like fuel line if you cant pinch it easily guess it will be cool

 

I can't pinch it so it would be cool , thanks for the concern