Saturday, December 24, 2016

Christmas tree and a trip to the mall

We went to our local tree farm (being out in the country, there are several tree farms to pick from) to slay our Christmas tree.  The "product" of a fresh-cut tree involves climbing on a tractor, being abandoned in a field with a saw and hauling the tree home atop one's car after the tree has been baled. Wondering around in the field looking for a tree means that quite quickly, nearly all trees begin to look the same.  Only once it's home does one notice the bald spots and general crookedness of a tree that looked just fine in the field.  Buying a used car is pretty much the same experience, what looks to be great in the lot with its companions seems to loose its luster once you've gotten it home. Buyer's remorse?  Maybe it's just too difficult to process so much information at one go, so our brain fills in the details, dents and scrapes.  When we're looking at one car, we can the concentrate on the finer details.


Probably won't fall off, maybe?
 We didn't always go Christmas tree hunting, in our family, BC (Before Children, or, BCE, Before Children Existed for the folks with a knot in their kickers and variously colored hair.), we celebrated Christmas sans a tree. Having a $500 dollar car means not having to worry about dents/scratches incidental to getting the tree home, all one needs to do is heave the tree on the roof and secure it with some twine.  No padding or a tarp, just get close and lob.  It wasn't always like this, when we drove an overpriced Honda SUV or pricey minivan, we cared about the roof.  Dents?  Scratches?  Sap? Mud? All of that used to matter when our car monthly payment approximated the purchase price of the Freestyle.

One feature of the Freestule that I just love is the raised roof rack.  This made securing the tree much easier, as I had an easy place on which to loop the twine and make knots.   In the process poorly securing the tree to the car, I looked down and what did I see by an expended hypodermic needle.  It's probably flotsam from a friendly neighborhood injectable drug user, either getting their tree or working in the fields.  Maybe a diabetic?  Most diabetics fanatically keep their sharps safe, so maybe, but unlikely.

A trip to the mall, some more Christmas lights

Limp home mode
The next day, we got the first snow of the year: better than a light dusting, maybe one or two inches. On my way to the mall, after dropping my kid off at work who didn't want to drive in the snow I felt the AWD system kick-in and then my troubles started.  The car went into "limp-home mode".  An Eat 'n Park was close by, so we stopped there for brunch and after eating we'd see if the problem went away, as stopping for a quick road-side reboot of the engine didn't help.  I didn't have my code reader handy, I'm not sure what problem occurred, but we got the combination wrench and check engine lights, as the picture shows.  This can mean either transmission, transfer case or throttle problems.

Former furniture store
Post breakfast, the engine started without an issue.  We needed to head to the mall for some shopping, which was close. If the car became cranky again, the plan was  to have the better half shop while I called for a tow.  I'd have a nice place to wait at the mall for a tow truck and would return to the mall with a working car.
My last visit to the mall was... I can't even recall when I was last at the mall, but over the years, there's been a shift from retail to personal services.  Now, however, the transition now seems to be from personal services to just empty spaces, not unlike the transition many small town's main streets in the area endured in the 1970's as retail fled main street for the mall, store fronts turned into exercise and tattoo parlors before the front windows served to hold news paper concealing the empty insides.

Earlier this year, before the retail season, Sears closed at the mall.  When the Beaver Valley Mall opened in 1970, Sears was an anchor tenant (along with Gimbels and Horne's), maintaining the same location for 40+ years: a dependable source of tools, lawnmowers,
As always, an empty lot around Sears
boots, Levi's and something polyester your grandmother would wear to a cousin's wedding.  The next biggest tenant, Macy's, doesn't look to be sticking around, as the upper floor has been closed and the range of merchandise greatly decreased.  Meanwhile, across the street, Wal-Mart's lot brimmed with shoppers.

Tuesday, December 6, 2016

Torn seal, failed water pump, back on the road

Oil from torn seal
When my new water pump failed, the ground metal from the water pump tore newly installed seal into bits, causing another oil leak.  Here's what I saw when I removed the pump from the car, over on the right.

Having replaced the very same seal before, I wasn't at all intimidated this time around. Out came the seal puller and in one swift hand-motion, I lost my grip and whacked the back of my hand against the radiator.  I was wearing my gloves, but they don't offer much protection for the back of the hand and it seems that's the most sensitive part. A little more fiddling and out came the seal. 

Torn seal
The tearing was complete, a replacement was necessary.  Getting a clear picture wasn't easy, because it was difficult to keep the background and foreground in focus, but here it is over on the left.  While the old seal apparently wore so that it wasn't keeping a tight grip on the camshaft, this one was completely compromised.  Just like the last time, I put a thin coat of oil on the seal and worked it over the camshaft, using my Craftsman Seal Seating tool (right) and a few taps from a plastic dead blow hammer to make ensure the seal was seated.

Re-attaching the water pump

New pump installed
Once the seal was back in place, I re-attached the three 8mm bolts holding the new water pump loosely and then the center 13mm bolt loosely, then tightened the outer bolts and then put more force on the inner bolt.  I'm not sure why this is the process, probably to make sure the impeller is correctly centered in the housing.  The final torque specification for the center bolt is 18 in/lbs (25nm) which is not much more than hand tight and on the lower end of my torque wrench's scale.  It didn't feel like much so I gave the bolt an extra 1/2 turn, as I wasn't sure if my wrench was accurate and I didn't want the impeller to stop working if the bolt wiggled loose.  But I didn't want to overtighten either as that could crush the seals around shaft keeping the fluid where it belongs.

All back together, recycling the coolant

When I took things apart, I used a basin to catch the coolant fluid in hopes I could use it again and not have the hassle of taking it to the disposal center (c'mon, we don't put chemicals like this down the drain, that would be uncivil) whilst saving a few bucks.  Before pouring the coolant back in the car, examination showed bits of dreck floating about, dreck I'd rather keep on the outside of the cooling system.  My solution was to put a coffee filter in the funnel and have that catch the chaff; however the filter was a bit too fine and I was a bit too impatient. 

The filter was replaced by a paper towel, and in about 10 minutes, all of the captured coolant was back in the system.  I was thinking that the ethylene glycol molecule's size was the cause of the poor flow through the filter, but I was wrong by a factor of 1000.  Our friend C2H6O2 is about half a nanometer and a the average pore size of a coffee filter is about 50 microns, so the chemical should have passed through like a bee through an open window, or air through a residential screen, even if some of the molecules clung together in the filter's mesh.  The slow speed was probably the filter doing it's job removing nasties from the fluid.

I thought I was being paranoid with the filter, but here's a picture of what remained in the pan after filtering.  And, yes, the pan was clean before it caught the fluid.  When pouring the liquid into the filter, I was careful not to disturb the sediments, as I didn't want the filter to break, or more likely, clog.

Job being done, I'm hoping that two's a charm when it comes to water pumps.  It's been about 200 miles on the new pump with no problems, so I'm not worried about the torque of the impeller bolt, or at least I'm not worried that much.

Sunday, December 4, 2016

Water Pump, Encore!

When your correspondent last wrote, my Freestyle stranded me on the way home from the Pittsburgh
Frownie
airport.  Something in the cooling system failed (I was guessing the thermostat, which turned out to be half true!) and when I tried to slowly return home, stopping to let the engine cool, my wife guilted me in calling a tow truck and having her meet me for breakfast.  I came to a stop at King's, a chain started by Hartley King, an offshoot of his fuel distribution business.  Kings always played second-fiddle to Pittsburgh's dominant family chain "Eat 'n Park", despite having both better breakfast and desert menus.  For years, as a counter to Eat 'n Park's "Smiley" cookie, King's had the Frownie -- a stroke of marketing brilliance to counter the Smiley -- a brownie with a no-so-menacing frown.  But it went deeper than the frown: the earth-tone brownie matched the Kings décor to the tee, the fudgy bites were more substantial than the nearly flavorless Smiley cookies, like the food at Kings versus E'n'P.   Kings has since been purchased by some outfit on the west coast and is losing it's quirkiness, the menu isn't on the placemat anymore, the Frownie retired to mascot Florida and decidedly 70's faux wood Formica décor replaced by cleaner and brighter tiles and paint.

I didn't have the chance to look into the problem that day and some home things kept me from tearing into the engine for about a week.  When I did get to seeing what was happening, I had the following suspects, in my order of probability:
  1. Blockage in radiator
    This would keep the coolant from flowing, since I was not getting heat in the cabin, this would sort of make sense, but I would have expected some coolant flow from the engine to provide some heat.
  2. Thermostat valve failure
    I replaced this already, but it could have been the problem, maybe a discount part failed?
  3. Water pump
    Least likely, since it was just replaced.
I'm thinking #1 as the problem, since I replaced the thermostat and water pump.  But, the nature of the symptoms (over heating engine, no output from heater) lent itself to being a failed water pump, despite it being replaced just a few months back.  I started by removing the various pipes from the cooling manifold (using a basin to catch the fluid) and to my surprise, saw some fresh oil dripping on the starter, along with a whiff of the "oil and coolant" smell.  Something interesting is afoot, just not sure what.


Note oil drip on starter...
  Off came the water pump.  Flipping it over, I see oil leaking from the weep hole of the pump.





This was odd, because water pumps shouldn't contain any oil.  Then, on close inspection of the part, the nature of the problem became more obvious, looking closely where the pump interfaced with the cam shaft:


Then, it can back to me...  When I was pulling out of the airport, I heard a squeaking/grinding noise, I that was this part of the pump breaking and being reduced back to the metal powder from which it was formed, in the process tearing the seal around the camshaft, permitting the oil into the pump shaft.  Here's what the seal looks like in the engine:



At this point, I needed to replace the water pump and seal.  But the thermostat was OK, right?  No it wasn't, so that will need to be replaced as well.  What makes this more frustrating is my smugness over having the luxury of time to do the research and wait for delivery.  At least I have practice!