Another
servo failure reported
Longstanding V8 enthusiasts, Mike Dunlop with Limeflower 0118,
has reported a servo failure but fortunately it was detected
on start up - the garage was filled with white smoke as the
brake fluid burnt off as it leaked into the inlet manifold from
the servo.
My experience was nowhere as scarey as it might have been
if the car had been travelling at speed as my car was in the
garage when I found the problem. I was about to start up the
old girl after her winter rest and as usual I tried the brake,
clutch and throttle pedals before starting up. I noticed the
brake pedal went straight to the floor. I checked the reservoir
and it was empty. As the car was in the garage on chocks I started
her up anyway and instantly there was white smoke everywhere,
and I do mean everywhere as it was so thick I had to leave the
garage to get some air. The car had started up fine on the second
attempt (which is as usual) and the engine had sounded fine
with the oil pressure at the correct point and steady as a rock.
At this point I had a panic and convinced myself that the car
had a cracked head (the garage had been very cold over the winter
months) as at that point in time I had not connected the white
smoke with the loss of brake fluid. |

TE low brake
fluid sensor - a vital safety device for an MGBGTV8
See V8NOTE332
More information on the reported servo failures?
Reports of brake servo failure. See
V8NOTE228
Posted: 120212
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Once
the engine had cooled down I did a radiator check and looked
at the dip stick and oil filler cap for the usual light grey
sticky stuff associated with water and oil getting together,
but all was fine. I went back into the house, had a strong cup
of tea and told myself to think as a proper MG Car Club member
would do. Then it came to me, the white smoke must have something
to do with the brake fluid loss, marvellous thing the brain
when used properly. It was then that I remembered the warning
from the V8 Register as a note in Safety Fast about servo failure.
The next thing I did was phone my mechanic to come round and
take a look at the servo. As soon as he had taken the servo
off the car, it was clear that the servo was the problem, the
brake fluid that had not been sucked into the inlet manifold
(hence the white smoke) was still in the servo.
The remedy was obviously going to be either refurbish the original
servo or buy a new one. I spoke to my twin brother in New Zealand
who had replaced the servo on his 1968 MGCGT just before he
had shipped it out of the UK and he thought the "buy new"
was the best route, so that's what I did. I would have liked
to keep the car original but on safety items I didn't want to
take the risk. I purchased mine from Moss Group in Feltham and
got a company called V-Tech to install it. This local company
(Bracknell) is a two man team and the only guys who have ever
been allowed to work on my car since I found them back in the
80s. The boss (Colin) did his apprenticeship on the V8 line
at Abingdon on leaving school, but had never worked on a V8
since leaving MG and starting his own business until he met
me. I have kept the original unit and possibly will get around
to having it refurbished at some time.
This all happened around March 2011 and once the new unit was
fitted I had trouble free motoring for the rest of the year.
The brakes are now better than I can remember them being for
some time, so perhaps my servo had been on the way out for a
little while. I must admit I had topped up the reservoir a couple
of time the previous year and had checked all the brake lines
for leakage but had found nothing out of place. As the top ups
had been only a teaspoonful at a time, thought no more about
it. The only disappointing thing for me was that the new servo
came in black and of course the original unit was in normal
steel colour which I had metal polished to a chrome look during
the years I concoursed her. |
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V8
Register - MG Car Club - the leading group for MG V8 enthusiasts
at www.v8register.net
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