The photos below are what we saw.
We spent a great
night in Greenback and following morning we prepared to attack
the turbocharger.
Bob and
Kitty have a substantial farm and use Unimogs as their farm
implements.
They
also have an LMTV that they use for expedition camping. The
Alaskan camper makes a great match for a high-mobility truck.
We
ordered replacement turbocharger hoses from Amazon and got them
delivered the next day. These hoses are both high pressure
and high temperature capable.
Note the
blow-out in the wall of the elbow. The elbow spanned an
angle less than 90 degrees and was therefore a bit
pinched. The hose carries hot, compressed air from the
turbocharger compressor and routes it to the intercooler.
The pressure in the elbow is about 25 psi.
The new
hose was installed, but we emulated the geometry of the previous
elbow. This later proved to be an error as the elbow
slipped off the connecting pipe within a few miles. It was
only after changing the length of both elbows in the run of pipe
that the problem was conclusively resolved.
Thor
versus a Stewart and Stevenson LMTV.
Another
view of the two trucks.
During the last maintenance cycle we endeavored to change all rubber hoses on Thor. Our list missed these hydraulic hoses for the cab lift cylinder. Note the wart on the hose. We will change these soon.
A view
of the turbocharger hose runs after the geometry problem was
addressed. The turbo compressor is the silver disc on the
right of the photo above. The large hose that is aligned
with the turbo is the input air intake from the air
filter. The intercooler is visible at the upper
left. We left Greenback and headed to Chapel Hill, NC to
visit our friends Scott and Heather. From there, we headed
north to Warrenton, VA.
We
visited our friends John and Alice in Warrenton. They have
an awesome shop where they support their farm and car
restoration addictions. The Z4 is one of the newest
members of the fleet.
John and
Alice have a number of show-worthy restorations.
The
upper level has a vintage Avanti.
When it
rains, it pours. We saw some splattered fluid and
suspected it was radiator fluid. We checked the reservoir;
the level was fine, but there was some interesting debris at the
neck of the reservoir. We have not identified the source
of the debris.
John
uses his Kubota to move some hay rolls that were delivered
earlier in the day. These are 800 pound rolls.
The farm
has a number of llamas.
Alice
feeds her female llamas.
Food
always gets the animals' attention.
From
Virginia we headed west to Agusta, WVA. Kathleen's aunt lives
there in this cool log cabin that was custom-built from a kit.
The fall
colors were starting to show in the West Virginia hills.
Some of
the best colors were visible from the highway, although it is
hard to take a good photo while rolling.
We headed
east toward Jamesburg, NJ and discovered what appears to be a
fuel leak based on the splatter patterns. The leak appears
to be at-or-behind the shock tower. Our hostess was also
an actress and was starring in a local production, so we put the
mechanical issues on hold and attended the show. It was
very funny.
A closer
examination revealed at least two problems. First is the
EGR hose which was missed in the hose change effort but clearly
has a crack in it. Likewise the fuel hose that connects
the fuel return port on the head to a return line which is
visible with two screw clamps. Both lines are potential
sources of the contamination, but the fuel return line is the
most likely culprit.
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Photos and Text Copyright Bill Caid 2018, all rights
reserved.
For your enjoyment only, not for commercial use.