Man In The Maze

by Rich Luhr, Editor of Airstream Life magazine

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Mar 04 2013

A good Monday

Although the Caravel is not yet done, time is short so I’ve started the other major Airstream project.

As I’ve mentioned before, the Safari’s floor covering is pretty tired.  We’ve purchased vinyl planks which will overlay the existing vinyl flooring in the living area and bathroom of the trailer.  In the bedroom there’s carpet, which is horribly discolored (after eight years of heavy use) and which we’ve never been fond of anyway.  So that’s coming out, and the entire trailer will have a new look once this job is done.

Mike has agreed to help me out, which is a great relief.  I have to get the Summer magazine in the hands of the layout crew by Friday, so there’s not much time for home projects.  The plan is to start early in the office, knock off in the early afternoon, and thus get in a few hours of work in one or the other Airstream before the sunlight starts to fade.  Today I worked on the magazine from 7 a.m. to 2 p.m. and then we got started on the Safari by removing most of the bed frame and the carpeting.

The bedframe came out fairly easily.  We had it disassembled and stored in the carport in less than an hour, including folding up the blankets.  So then we ripped out the carpet and the carpet pad.  That was quick too, even with the need to locate and remove about thirty staples in the floor.  (In the course of this demolition we of course uncovered numerous souvenirs of this trailer’s time on the assembly line, mostly in the form of discarded rivet stems and the occasional dollop of sawdust-encrusted caulk on the floor. I regarded these artifacts as almost historic.)

Buoyed by all this success, we moved to the dinette, and had that out in even less time.  One of the nice things about working on an Airstream is that just about everything is fastened with a #8 wood screw, even those things that are anchored in the aluminum.  So with a screwdriver, you can disassemble pretty readily. It’s even faster with a cordless drill and screw bit handy.  And if you strip a screw, it’s easy to replace with a small assortment of different-length #8 spares on hand.  I always have a bunch of them in my repair kit.

IMG_1874

Of course there are always a few tricks.  The forward bench of the dinette, it turns out, was fastened to the bulkhead (wall) that divides the dining area from the front bedroom.  To get to all the hidden screws, we had to remove the bedroom’s sliding door (about eight more screws and a bit of sleuthing).  Since the furnace is inside that part of the dinette, I now know exactly what will be required to replace it someday.  Hopefully not too soon.

The bedframe was similar—most of it came out but we discovered four screws that could only be accessed from inside the front outside compartment, and six staples that I just had to yank out.  I hate finding staples, and whenever I do I resolve to replace them with something better.

Eventually it was all out and we were left with a lot of dust, a lot of screws in clear plastic baggies, and plenty to think about while cleaning up with the Shop-Vac.  We knocked off at 5 p.m.

The new flooring should be fairly easy to install, once we get started.  But as with everything, there are a few more tricky spots.  The major problem is where the existing vinyl floor ends in the bedroom.  The existing floor is thin, but it’s just thick enough that it will telegraph a slight bump where it ends.  We have a few schemes in mind to hide this problem, and will test some solutions in the next day or two.

Another problem is that we are going to have to trim the new floor around quite a few obstacles, since we aren’t removing the rest of the interior furniture.  For this problem Mike has produced a 50-year-old tool from his father’s workshop that we think will be just the ticket.  I’ll show you that device later.

While all this was happening, the UPS truck came by the final items I need to complete the Caravel.  At least, I think they are the final items.  It’s dangerous to say that, given that every other project has taken many more trips to the hardware store than expected.   I don’t know when I’ll finish the Caravel but I certainly expect to do it this week, perhaps when Mike is busy and unable to help me on the Safari.

In our next session in the Safari, we need to remove one more piece of furniture, and then start prepping the surface for laying down the new material.  That’s for another day.  We got enough done for one Monday.

Written by RichLuhr · Categorized: Renovation

Mar 03 2013

Remind me why …

It’s easy for me to forget that I have an unusual view of the Airstream world.  Most Airstream owners enjoy the simplicity of being happy travelers, and that seems blissful to me. I remember the first year we had an Airstream, before I started the magazine, and it was really a lot of fun.  We just thought about where we were going next, and not much else.

These days I look at the world of Airstream through a sort of cubist perspective, sometimes seeing both sides of an issue at once, often balancing the needs of the magazine with the desires of its supporters, living on both sides of the perennial “vintage versus new” debate, as a both a customer and a promoter of the lifestyle, and as an occasional consultant to the industry.  It gets confusing.

When I get tired of being the Publisher/Editor, I switch to Event Organizer or Industry Consultant.  When I get tired of those, I switch to vintage Airstream repairer and go out to the Caravel to do some more plumbing.  When I get tired of everything, I start planning vacations.  Think how lucky you are if you only think of Airstreams as travel opportunities.  That’s really the best part.

New propane regulator CaravelThe Caravel plumbing project has been halted this week pending the arrival of parts and tools.  I should have everything I need to complete it, on Monday.  In the meantime, I got the propane regulator installed.

It’s a fairly easy job, but it did require special-ordering a longer main propane hose, four new (smaller) stainless screws, and two right-angle brass fittings so that the lines wouldn’t bump into the tanks.  That’s all because the new regulator wasn’t an exact replacement.  The screw holes are smaller, and the physical shape of the regulator is different.  When I tried to connect the 30# propane tanks the first time, the pigtails bumped into the tanks.  The right-angle fittings fixed that, but getting the original brass fittings out of the regulator was a hassle.  Eventually they came out with the help of a vise and an extension bar on the wrench.

The other problem with this replacement was that the red/green “flag” that indicates whether the tanks are full can only be seen from the front of the regulator.  All the other ones I’ve owned had the flag on the top so it could be seen from any direction.  So that meant the new regulator had to be mounted to face forward.  This required a 23″ hose instead of the 18″ one I had already bought.

The whole job took three visits to the hardware store, and now I’ve got a bunch of screws, bits of brass, and a hose that I don’t need.  These are the kinds of surprises you have to expect when fixing a vintage trailer. My spare parts box is getting full.

Meanwhile, the Safari re-flooring project is just about ready to start this week.  I have recruited Mike to help out with the two-person jobs, like getting the bed frame and dinette out of the trailer.  We are hoping to start Monday or Tuesday on this one, day jobs permitting.  I’ve been scouting out tool rentals and planning our attack of the job.  First task is to remove the bed, bedroom carpet, and dinette.

For those of you who were following the Mercedes 300D project, it’s pretty much done.  Since my last mention of it, I’ve been just tweaking and adjusting.  I replaced the rear differential oil (really stinky stuff thanks to the high sulphur content), fixed some loose wood on the dash, had four new Michelin tires installed, fiddled with the monovalve to try to resolve an intermittent heat issue, lubricated a few things, bought new floor mats, and had the car professionally detailed.

None of that took much effort on my part, so I’ve just been enjoying driving it around town and on a few short trips.  I exhibited it in a car show a few weeks ago, and took a roadtrip up to Phoenix (120 miles each way).  It’s now exactly what I wanted it to be: reliable, 100% functional, and reasonably good-looking.  This summer I’ll probably have to get the windows tinted, but other than that it shouldn’t need anything but oil changes.   And no, I’m not going to put a tow hitch on it.

With all these Airstream projects past, present, and future, it seems only fair that we should take advantage of the reason we own Airstreams.  So we  have determined that we are going to California in a few weeks.  Everybody wants a trip, and I’ve got a few business things to do in SoCal.  It will be nice to get away from home, re-gain some perspective, and relax in the Airstream for a while.  At this point we don’t know how long we’ll be gone, but hopefully it will be at least two weeks and possibly more.  It will take that long to soak up the feeling of being on the road again and remember why we do all this stuff.

 

Written by RichLuhr · Categorized: Maintenance, Mercedes 300D

Feb 25 2013

80% plumbed

For the most part I resisted the temptation to work on the Caravel over the weekend.  There were other things to do and the end of the plumbing project is within sight, so it seemed like a good idea to take a break for a little while.

Over the weekend the only major progress was on the last really tricky bit: the plumbing assembly for the water heater bypass and the connections heading off to the two sinks.  I built it in about an hour.  You can see an early draft of it in the picture below, not quite complete but showing all three of the ball valves and some of the major connections.

IMG_1832This piece will stand upright next to the side of the water heater (so the blue line will be at the bottom), and thus tuck in neatly to allow lots of free space under the bathroom sink where we formerly had wild plumbing lines going everywhere and blocking everything.  The draft in the photo doesn’t show two additional tees that I added later.  As with the Dreaded Closet Manifold, it was designed so that access to the three ball valves would be much easier than before, and of course it’s color-coded too.

This was definitely the hardest piece of the project but I wouldn’t call it hard, really.  The whole project has been fairly easy, although time-consuming, and despite the challenges I’ve really appreciated the chance to do this and learn some new skills.

I’ve since completed the assembly with tees for the sinks and swivel fittings for the water heater connections, and test-fitted it for the umpteenth time.  All that remains is to fix couple of under-sink mistakes I made earlier, and then crimp it into place.

The mistakes are going to hold up the project, though, because I need a de-crimping tool.  I had gotten this far without purchasing that tool, which is used to cut off crimps without sacrificing the brass fittings.  Then I made two serious mistakes: one bad crimp, and I rather stupidly put in two tees to connect the cold water side of the bathroom faucet.  Obviously I only need one.

I could correct these mistakes by cutting out and sacrificing a bunch of completed sections, but I decided to go ahead and purchase the de-crimping tool (about $20) so that I will be able to make other repairs or modifications later.  I added this to a final parts order on Friday and probably won’t get it until late this week, so in the meantime not much is going to get done.

Once the parts do arrive, the project list looks like this:

  1. Hook up sinks
  2. Finish connecting water heater bypass to heater and main lines
  3. Install new city water fill
  4. Add experimental water hammer arrestor (*)
  5. Add foam insulation and pipe clamps for sound dampening and security
  6. Pressurize system and check for leaks (first with water pump, then with city water pressure)
  7. Test for noise & add insulation as needed.

Notice I haven’t included the item “Fix leaks”.  There won’t be any.  Right?

The water hammer arrestor is a complete experiment. I’m wondering if it will have any effect on the pulsing that the water pump transmits through the entire system.  You can insulate and clamp down the pipes so they don’t move, but the vibration is still transmitted through the water, so the vibration can re-appear in the pipes downstream.

RV stores sell a device called a pressure accumulator which is supposed to smooth out the water flow, but I’ve tried one and found it ineffective.  The water hammer arrestor is designed to stop one heavy “slug” of water pressure rather than a constant series of pulses, but I’m hoping it will have some positive effect anyway.  I’m going to plumb it in on the main line from the water pump and see what happens.

With this project mostly under wraps, and the weather finally warming up here (I know, no pity from the northerners), it’s time to get serious about the Safari floor project.  That’s on my list for later this week.

Written by RichLuhr · Categorized: Renovation

Feb 22 2013

Too much plumbing history

Like all projects, the Caravel plumbing replacement moves forwards a little unevenly—a few hours one days, and a few minutes the next.  Yesterday I got less than an hour of work done on it, because I was tied up most of the day with other projects, the kind that pay for this project.  The major accomplishment was screwing down the water pump and neatening up the wiring with some new butt splices. But although there wasn’t a lot of visible progress made, I was happy to take some time to think about the remaining plumbing to figure out how best to correct it.

There were two major puzzles to solve.  The first was the city water fill.  I had made some incorrect assumptions, namely that the original 2.75″ round filler was no longer available as a modern part, and also that it did not have a check valve.  This lack of a check valve was a major annoyance, since it meant that anytime the fill was not capped tightly our water would pump out it and onto the ground.

Because of those two incorrect assumptions, I had bought a modern Shurflo city water fill for $30 to replace what we had.  It comes with a pressure regulator and check valve built-in, all very neatly package but considerably larger than the original. I would have to enlarge the existing hole to 3.75″, and that gave me pause.  Anytime you have to cut an Airstream’s skin, you should take a day or two to think about it first.  It doesn’t heal itself.

Colin set me straight on this.  A replacement for the original filler is available, and it does have a built-in check valve.  (The original one did too, but the check valve failed many years ago.)  I found it for $12 at Camping World.  It’s Valterra part # A01-0172LF. You can see it in the photo, just above the original one.

The only problem is that the replacement unit takes three screw holes, and the original took two holes, so I’ll have to drill a couple of new holes.  I can live with that.  The old holes will be hidden behind the aluminum flange of the filler, and sealed with caulk.

Space inside the trailer closet to attach the plumbing to this filler is very limited.  For some reason, it was installed next to the black tank and so there are only 4 inches of clearance to work in.  If it had been installed just a few inches forward on the trailer body, there would have been plenty of working space.  This is one accessibility issue that I can’t rectify (at least, not without patching one hole on the skin and making another).

After some visualizing, I realized that it would be simple to put a 90-degree elbow on the inside of the city water fill so that the water line goes upward and then via an 18″ loop of clear flexible line (to absorb shock from city water pressure) to the closet manifold that we installed the day before.  This design also has the advantage of self-draining if the trailer is ever winterized again.  To do this, I need a special elbow that goes from pipe thread to PEX, and I couldn’t find one locally so I added it to another order from PEX Supply and will get it next week.

The second puzzle was how to re-route the plumbing to the water heater so that it would meet the design goals of (a) easy access for future maintenance/repair; (b) neatness (so we’ll have more usable storage space), and (c) reliability.  From a reliability point of view, I’m not a fan of the typical winterization valves sold in RV stores.  I like the way Airstream does it instead, with a very clear winterization bypass and three shut-off ball valves.  It took me a while to figure out a neat solution, and when I did I realized that the project will require more shutoff valves than I had ordered, so that went on the next order as well.

Since a major chunk of the project is now on hold for parts (which won’t arrive until sometime next week), the next thing to do was to rip out the rest of the plumbing, since I no longer needed it to understand what was going on.  The stuff that was left was frankly depressing to see and I was glad to get it out of there.

The most interesting bit was this (above).  This was a repair done by an Airstream shop to a section of PEX that was leaking at the fitting.  The fitting was leaking because it was installed without an elbow and thus had been overstressed.  The mechanic put in the blue section of PEX that you see, using steel clamps. This is a reliable system, nearly equal to the copper crimps.

IMG_1831

The repaired section was fine, but the pinhole leak we found before Alumafiesta occurred right next to it, in the first 1/4″ of the white PEX, just past the clamp.  Why?  It appears that something (a fitting? a clamp?) cut into the white PEX a little bit.  It’s barely visible in the closeup view above. The mechanic should have trimmed off the last inch or so of white PEX to ensure good material, but for whatever reason he didn’t, and so this last inch sprang a leak when subjected to city water pressure.

This may help explain why I decided to just gut the entire system and replace it with new.  There’s too much history in this system.  I want a “no stories” plumbing system.  If something goes wrong, I will have to blame myself but also I will know exactly how to fix it, and that’s infinitely more satisfactory than being bewildered while cursing some anonymous prior owner or mechanic.

Even while waiting for parts I can still do some work on the bathroom sink plumbing and get started on the winterization bypass for the water heater, so it’s possible I’ll put a few hours in over the weekend.  Otherwise, expect updates next week.

Written by RichLuhr · Categorized: Caravel, Renovation

Feb 20 2013

Plumbing on the snow day

Yesterday my iPhone emitted a terrible sound from my pocket, one I’d never heard before.  It turned out to be warning me of an impending “blizzard” coming to Arizona.

A what?

Yep, this morning the snow level, which usually stays well above 4000 feet, dipped down low enough that we have gotten considerable snow here at 2,500 feet.  This is a rare event for Tucson, one which brings everyone out to look at the strange white stuff, take pictures, and slide around on the roadways.  Having seen my share of snow from life in the northeast, I was not impressed until  I saw it decorating the Caravel, and then I succumbed to the temptation to take a few pictures myself.  I really don’t know why.  I have lots of pictures of the Caravel buried in deep snow from Vermont, but I took a few more anyway.

There’s a little electric heater in the Caravel to keep it from freezing at night, and that makes the interior cozy enough for me to keep working on the plumbing project.  I had run out of Teflon plumber’s tape yesterday, and I needed to ponder the complexities of the next major phase, so I paused the project overnight.

Today, with large, wet snowflakes pattering on the aluminum skin, I got back inside to figure out what I’ve been mentally calling “the dreaded closet manifold.”  One of the narrow bathroom closets had housed a strange collection of plumbing intersections, and it was all wedged into a space only about 1 foot wide and three feet deep.  This made just reaching the plumbing a difficult task, since I don’t fit into spaces that small and my arms aren’t that long.

In rebuilding this rat’s nest of plumbing I wanted to design something that would be much easier to access and service in the future.  There was a shutoff valve that could only be reached if the gaucho cushions were removed, for example.  The city water fill lacked a check valve and a pressure regulator, so it needed wholesale replacement but couldn’t be accessed without disassembling half the bathroom.  Much of my time was spent figuring out ways to remove the whole mess before I could even get started on building a new system.

Eventually, with lots of struggling, cutting, use of extension tools, and even duct tape, I got the plumbing out. A neat new plumbing manifold was designed after lots of headscratching.  You can see it below.

Although it doesn’t look like much, this little bit solves several problems:

  1. It connects the water pump, city water fill, toilet, and main cold water line to the rest of the trailer.
  2. It fits in the exact center of the available closet space, on the floor, with room to swing the shut-off valve if needed.
  3. Nearly all of it can be easy accessed from the door without requiring the help of a small person.

It took Eleanor and I about 10 minutes to crimp all the fittings once I had the basic layout measured and cut.  In this type of job, it’s definitely a “measure twice, cut once” situation.  Actually, being a newbie to this, I measured about four times for each piece.  So although you may scoff, I regard this little bit of plumbing as a work of art.

Getting it into place was another matter.  I could easily make one of the connections, but for the two low elbows I needed four hands to hold everything in the right position when crimping.  Eleanor was recruited.  At one point she had to wedge herself into the closet, because she’s thinner than me.  And I’m not particularly big, so you can get an idea of how tight it was.

Or maybe this picture will help.

And now that part is done.  I won’t rest easy until we pressurize the system and verify there are no leaks, but I’ve done everything I can to ensure that it will be perfect.

So now onto the next phase.  Believe it or not, the plumbing project is almost half done.  We have gone from the fresh water tank  to the bathroom, which means the water pump, winterization valve, and toilet are connected.  I still have to rig up the new city water fill, water heater, and both sinks.  (The Caravel doesn’t have a separate shower connection, since it uses a takeoff from the bathroom sink.)

Time elapsed so far is probably about eight hours, not counting trips to the hardware store or pre-planning.  I think that’s not bad for a first effort.  I’m actually looking forward to tackling the under-sink areas and the water heater, as (again) they are a mess of stressed connections, all of which are in the wrong place.

I discovered today the real danger of doing this and blogging it: my Airstream friends might ask me for help with their trailers.  Well, let me say this:

  1. I’m still definitely not an expert.
  2. You can borrow my tools.

Written by RichLuhr · Categorized: Caravel, Renovation

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