Re: [alfa] 105 Benditalia Brake Boosters

["Gwynne W. Spencer" <gwynnes1@xxxxxxxxxxx>]

How about putting a "T" fitting between the intake manifold and the booster 
with a container attecheed to the base of the "T" and lower than either 
manifold or booster Drive for a while using brakes, then examine container 
for brake fluid ??

Gwynne Spencer

At 05:47 PM 5/8/2004 -0700, you wrote:
>>Caxambu says: "I suspect one (or both) of my brake boosters leaking
>>fluid into the intake manifold. I am continually topping off the brake
>>fluid reservoir and never seeing any evidence of fluid leaking to the
>>outside. Not at sparkplug looks different than the others. Brake
>>function is good.
>>
>>"What can I do to check this? Do the rebuild kits contain the necessary
>>parts to repair this?
>>
>>"1969, dual servo (Benditalia), floor mounted MC."
>>
>>********
>>Biba says:
>>Have someone follow you to see if there are fairly large puffs of white
>>smoke coming from the exhaust.
>
>I would amend this procedure to the following..
>1. Observe brake booster,  to see where the vac line input is.  (on ATE 
>cars its about 10 o'clock from the standing at the front of the car 
>perspective)
>
>2. Visualize the brake booster partially filled with fluid, then arrange 
>to make the right direction turn that will slosh said fluid towards the 
>vac port.
>3. Drive the car sharply thru the turn, and press the brake while making 
>the turn.
>
>The combination of centrifugal force, and the brake going in (which 
>reduces the volume and pushes the fluid level higher)  will better your 
>chances of aspirating some of that fluid down the hose into cyl #4.
>When this happens (if your exhaust system is hot, anyway) you will see 
>LOTS and I mean LOTS of thick creamy white smoke.
>
>4. Resist the temptation to lay on demand half block long, 20 foot wide 
>clouds of smoke that would make James Bond envious..   (remember kids, use 
>this knowlege for Good,  not for Evil..)  ;-)
>
>I fed a mysteriously thirsty brake system for quite a while (probably more 
>than 4-5 full tank top ups) before enough leaked into the booster to cause 
>this to happen on a turn and brake.
>
>As I understand it, the rear seal of the master cylinder is the problem.. 
>I'd guess the standard rebuild kit should have everything..
>Not sure how quickly or if the diaphram of the booster is damaged by 
>this,  as I remember my mechanic at the time just did the MC rebuild and 
>cleaned out the booster?
>
>Jon
>77 Spider
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