In reply to a message from Douglas G. sent Fri 23 Nov 2012:
Haven’t heard from you in a spell. Good in one way of looking at
it. not so good in the other. Like now, the Jaguar isn’t purring!!
If the booster is completely dodo, brake effort is formidable. So,
is it harder than nusual or is it that the car doesn’t brake as
well? The former points to a leaking diaphram in the booster
cannister. The latter suggest either the front or rear brakes are
not responding. Or in another way of putting it, a hydraulic fault,
rather than a vacum fault.
With the engine idling to assure maximum vacum, apply the brake
pedal. if it goes down, it maight be a hyudraulic fault or vacum
So, using a minivac, remove the caum supply hose and apply a
vacumn. See if the cannister will hold a vacum or if you are even
able to establish one.
And, then look csarefully for evidence of leaking hydraulic flud at
the master cylinder andat each of the calipers.
I assume, (that bad word), that the fluid resevoir is topped off.
I was going to respond earlier, but my typing skills on the laptop
are much worse than on this desktop. That means realy bad.
And, the laptop is having a hissy. It lost the wireless connection,
why, I dunno and it is late, so for another day.
My new companion is right out the door here. he prefers to lay on
the csrpet as opposed to the hardwood floor. Smart, those Cocker
Spaniels. He is a ten year old that I got from a rescue shelter.
he was slated for… at the dog pound.
The original message included these comments:
opinions. Suddenly my power assist is not all there. Brakes
function and have checked fluid level etc. Looking for thoughts
here as to trouble shooting etc. Once previously a careless mech
knocked off the vacuum hose to the servo and brakes were almost non-
existant. Does not seem to be case here but acts as if not all
there either. But I have checked for vacuum at the hose and full
vacuum is there as expected.
Carl Hutchins 1983 Jaguar XJ6 with LT1 and 1994 Jeep Grand
Walnut Creek, California, United States
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