Going through the Air Pack AGAIN....

[67 evil eleanor]

I'm going have to pull the Air Pack again. Just looked through it last week and everything looked good except the walls on the wet piston which I polished before reassembly. One thing I didn't do is take out the control valve seals as I understand the TM is wrong and I thought I'd try the Air Pack with what I had done to it. I guess my question is can this little piston/valve assembly prevent the Air Pack from assisting the brake? What do I need to clean or check? This is the last thing I need to do before putting it to bed for the winter.

 

[doghead]

There are rubber parts that need replacement, not visual inspection.

If your not getting "assist", then I would suspect your air control valve is sticking or stuck. You can confirm this by testing the air pressure at the lube hole, while applying the brakes.

IIRC, it has a rubber ended piston or a rubber seat and that may be stuck.

I would buy a rebuild kit and replace everything. I've rebuilt quite a few and never had one not work after rebuilding.

 

[rlwm211]

The compensator valve controls the air flow to the air cannister piston. If it cannot move, there will be no air assist.

RL

 

[67 evil eleanor]

I must have the new style since there's no oil plug in the end and it looks shorter than others I've seen in photos. Are the rebuild kits the same?

 

[doghead]

No, the kits are not the same.

At one time, Monkeyboyarmy had kits available for the new style air packs.

 

[67 evil eleanor]

Took the AP off and went through it again. Last time I did it, I didn't take out the control valve since I was unsure how it went back together. After reading several threads and finding a drawing of the internals I took it apart. Actually it was frozen in position and I had to force it loose. Not having a rebuild kit I cleaned everything up and honed the valve walls and reassembled it. Put it back on the truck and bleed the system and it worked. Now I have a sense of what a working brake system feels like and can easily stop the Deuce. I do plan to buy a new Air Pack and Master Cylinder and these should put everything in good order.

 

[rrrr]

Good job !

Don't forget to put a little air tool oil in your air system every once in a while. There is an access bolt/cap in the back of the brake air pack a squirt every 6 months in it as well.

 

[gimpyrobb]

Good job !

Don't forget to put a little air tool oil in your air system every once in a while. There is an access bolt/cap in the back of the brake air pack a squirt every 6 months in it as well.

Didn't read post 4 huh?

 

[67 evil eleanor]

I have the new style and there's no bolt. Guess I can undo the hose and squirt a little in it every six months or so.

 

[rrrr]

I have the new style and there's no bolt. Guess I can undo the hose and squirt a little in it every six months or so.

That's what I recommend. Then, every 6 months, put some air tool oil in your emergency glad hand and service the air system with a compressor to try and get a little oil thorought the system. In two years I've had no issues. I also put a remote brake fluid resevoir on my brake system so its easy to check. Saved my butt once already. I put automatic water drains on my air tanks as well.

 

[67 evil eleanor]

Any issues with the automatic water drains? I really would like to install them.

 

[rrrr]

None, work great for almost 2 years. No more getting under the truck to drain the tanks. My truck will hold over 50 psi after sitting for 8 hours. Got them from Eriks in California.