Profiles in Vehicle Maintaince
The Breakdown
Thursday, 30 March 1995
Now, I live about 3 miles from work.Simple drive really, just up Lampton Road,
through the double round-about then east on the A-4, and
left at Gillette Corner. (At which one would hear in a harsh Capitol accent, "Sharpest corner in the world is that!")
I pull out of the parking garage and at first, I thought
it might be an exhaust leak thwp thwp thwp thwp thwp....
it is related to engine speed. Then I make the right on the A-4
and it got much louder. It became continusous approaching the Osterley tube
stop, I came to the realisation that it was actually this metal on
metal scraping sound--low down under, maybe aft of the bulkhead ?.
I thought, will this get me home ?, and start keeping to the left,
keeping an ear to the curious sounds the Dang Rover is making.
The next light was red, I put in the
clutch pedal. BANG ! Serious BANG. The engine stalled.
It wouldn't start. Luckily I'm in the curbside lane
at the stop light, it is after rush hour and there is a phone box across
the intersection.
I rang the AA. Two hours plus they say. I leave a note on the windscreen
and go over to a curry house. I met up with the AA man and his little van gives me
a tug to the next bus stop. He said it wasn't turning at all, but then when
I tried it, it cranked OK, and we even fired it up, so we eliminated the starter
and, well, that leaves the clutch. I reckon the pressure plate went to bits...
I get the curry take-away and he gives the RR and me a tug home, barely a mile
away.
Well, so I set out to find a mechanic. Persuing the Land Rover Club Friend of
a Friend network, I start making calls, and sooner or later I track down the
number of a man who knows the number of the designated mechanic, but he is a
lorry driver but won't be home 'til the weekend. Come the weekend I get the
number of the designated mechanic, who runs a garage in Barkhamstead and not
only races Land Rovers himself, and also prepares vehicles for other folks.
He'll be down Tuesday evening to cart it away, and set off to work on it.
Seeing how I'm not driving anywhere, and I've got all this free time on my
hands, I decide now would be an opportune time to work on the Dang Rover, and
in doing so, change the oil and filter - and didn't notice anything out of
sorts.
The Mechanic
Tuesday, 4 April 1995
After work, at the appointed time, there arrives Andrew, and his dad (I think),
they drop the prop shaft of the Rangie and hook it up for the tow, I relate
to them the story of the break down and they ask a couple questions and
haul it of, ostensibly to do a clutch job.
The Call
Monday, 10 April 1995
Andrew rings me up and asks me to recount the story again
and there is the occasional Uh-huh. from his end of the phone
he asks a couple questions, inquires about the oil change, and then tells me
that the diagnosis was a bit off.
As it happens, they did the clutch, and the old one wasn't even beat. They went
to fire it up and had no oil pressure, saw the clean oil, deduced there had
been an oil change and then packed the oil pump with vasoline and tried to
start it again. This time there was still no oil pressure,
a large POP! and a puddle of oil on the offside of the engine.
In the puddle was a chuck of the block.
the Message
Monday 10 April 1995
Here is the e-mail I sent off when I got the story from Andrew:
Subject: I thought it went bang, I diid, I really diid....
Barney: Oy Fred, whuz it ?
Fred: Look like bits-o-piston ring Barn.
Barney:Uh, say Fred, I though the piston rings came off after you took the piston out of the block.
Fred:Gee, Barney, you mean they're not supposed to fall out, of the side
of the block ?
Yabba-dabba-do, I guess that clutch diagnosis was a bit off the
mark.
What Really Happened
Thursday, 27 April 1995
One of the inlet valve springs in my Range Rover's V-8 engine broke, in
two places. This
was probably related to a tapping noise, but not real noticeable.
Once the valve wasn't held up by the spring, the head of the valve is now getting hit by a pistion a couple thousand times per minute. The head of the
valve broke
off. This was probably when the engine started to make that continuous
screeching sound.
The head of the valve is now getting thrown about the interior of the
cylinder. Since the valve is is pretty hard, compared to a pistion head, and
there isn't enough space for it to get out of the way of the pistion, the
valve and the pistion attemnpt to occupy the same space.
Thus, the piston destroys itself.
Not something you hear every day, (you can't really tell it is hammering
when the noise is continuous).
Once the piston destroyed itself, a chunk of it fell down and got
pinned between the crank and the block, which was rotating at the time,
so the side of the block seems have gotten in the way of the piece of
falling piston, which was being pushed by the crank. This made a rather
noticeable deadened metallic bang, as the engine stopped rotating rather
quickly.
When the crew finally opened up the engine, the pan was littered with bits.
Andrew and his men scavanaged a Rover Vitesse 3.8 short block and and built
me a new engine within a week. It ran purrfectly.
Over the next few months Andrew saw the Rangie a few more times, replaced
the rear suspension bushes, did the very neglected tune-up, got it to
pass MOT.
After I bought the 793-PTA, the lads at Tring 4wd did the rear quarter
chassis and gas tank outrigger on 793-PTA, and got it sorted so that it
actually was road worthy.
So, next time you are NorthWest of London, and need your Rover serviced,
find your way to Tring 4wd, at Wood View Farm, off Hog Lane
in Ashley Green, Chesham.
Find the unit with highest concentration of Land Rovers, give a shout
for Andrew, and tell 'em I sent ya (if your rover is under 15 years old:-),
but let him do the diagnosis, eh ?
Bill Caloccia
Isleworth, UK
April 1995
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