From: Patrick Jankowiak (recycler@swbell.net)
Date: Thu May 04 2006 - 18:59:31 PDT
I have no idea. No visible leaks, all looks well.
Let me ask this. Does DOT5 expand when warm?
PJ
SGM PANTANO wrote:
> On the M816's...there is an air system to the back...which controls brake
> boost also... If it leaks -- your brakes are in deep trouble...
> Deuces --once they have a leak... you are also in deep trouble.. Air in the
> syster ...?/ What caused it to begin with.?/ A leaks cylinder.?? Well -- if
> you had a bad one..you now have sludge in the system..and it has to go...
> Flushing the system with mineral spirits..and replacing with fresh fluid
> usually does the trick..
> Gene
>
>
>>That sounds like a possibility. There should not be any air in there, but
>>some could have gotten in.
>>
>>Thanks!
>>
>>Hutterer, John (MPAU) wrote:
>>
>>
>>>Patrick,
>>>
>>>I have an M816 wrecker and was having similar problems. It was filled
>>>with new silicone brake fluid, after I had replaced the master cylinder.
>>>I thought that I had bled the brakes properly, with help from a friend
>>>pushing on the pedal, but must not have been as thorough as I should
>>>have been. I let the truck sit for several days, and then hooked up a
>>>pressure bleeder to it. I connected a clear plastic hose to each bleeder
>>>valve and watched the fluid as it came out. I was absolutely amazed at
>>>how much air was still trapped in the system. It took me nearly a gallon
>>>of fluid to bleed it completely out. A friend, who is a mechanic for the
>>>Army Reserve, says that it is his standard practice to bleed the brakes
>>>on a vehicle, let it sit over night, and bleed them again in the
>>>morning. He invariably finds that there is still air trapped in the
>>>system in the morning, and that it comes out with the second bleeding.
>>>The brakes on my 5 ton work perfectly now.
>>>
>>
>
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