Boosters or Master cylinder?

[FSJNut]

I'm guessing you mean between the pedal and master cylinder. It seems fine.\nThere are several feet between the master cylinder and the boosters, and they are connected only with hydraulic lines.

[Acesneights]

True. How is the brake linkage between the pedal and the booster?

\nThe booster is a hydrovac on a 270. Not connetced. I have heard that some m500's had Hydroboost but I have never seen one on a Travco.

[Acesneights]

The Hydrovac systems suck. Period. They suck on motor homes and they suck on med duty trucks. I can't tell you how many times the old 80's C60 GMC we had would either loose the brakes or have brake lock up. Also at Work we had a C6500 late 90's. Same thing.. Pull the vacuum lines off the booster and see if there is any brake fluid in the hose. No guarantee if you don't see any that it still could be leaking but if you do see some then you know for sure it's leak.\nYou should still have a hard pedal even without the booster having vacuum. Like you said, would just be much harder to stop.\nThese things should have had air brakes if you want my honest opinion. At the very least I'd say Hydroboost would have been better. The only Travco out of 7 that I have had that did not have brake issues from sitting is the 72 220. That one is an oddball.\nNo Hydrovacs. And it still has brakes....

[Acesneights]

here ya go...\nThe music in the beginning is awesome..\nhttp://www.youtube.com/watch?v=keChCevuKk8

[FSJNut]

Acesneights -\nThanks for the awesome training video. \nIt sounds like you're saying than one or both hydro-vac units have an internal leak, that let fluid out into the vacuum line, and at the same time, air leaked into the brake fluid. So, by bleeding the brakes, I could at least temporarily have some brake action again.\nI really don't want to replace the boosters at the storage facility where it is parked.\nI'll check the vacuum lines for leaks and/or brake fluid inside them. Thanks for the great advice. I'll go to the storage place this weekend and check it out a little further.

[Acesneights]

That is usually what it is if you dont see it anywhere else. If you refill and bleed it, it will probably be fine.\nIf it wont build pressure then you gotta see if it has pressure at the booster. If not then loosen the lines on the master.\nRemember it can take awhile to bleed these without a powerbleeder but it can be done. Just a pia.

[FSJNut]

I went to check it out a little today. I was thinking it had rubber hoses connecting the hydrovac units, but found those were the lines going to the air filter. I didn't have any wrenches with me to remove the metal vacuum lines. I did find a section of rubber hose near the engine that I was able to check for brake fluid, though. Slightly damp inside, but certainly not full of fluid. The master was still about half full, and brakes still non-existent. I listened for vacuum leaks while it idled and saw or heard none.\nSounds like bleeding is the next step using the procedure outlined earlier. My brake bleeder (youngest son) grew up and got married on me. I can still talk him into it --- probably.

[rcb]

We've been using large plastic syringes for bleeding here recently... very handy! Particularly if teamed up with a check valve. You have to get a beefy syringe though. \n\nDo you use the FSJnut handle on other forums? Seems like I've seen the same handle on the Jeep or Ramcharger forums.

[FSJNut]

Yes, is use FSJNut on the CFSJC forum (Carolina Full Size Jeep Club), and on the IFSJA forum (International Full Size Jeep Association) and probably on a couple of other forums.\nInteresting idea about the syringes. You use them to pull fluid out of the bleeder?

[rcb]

Yeah we also have used it to back fill from the bleeder as well when doing flush and fills on brake fluid. The check valve was from a brake bleeding kit. I was surprised at how well it worked if you're. Just one person.