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1951 Pontiac Chieftain


PhilA

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That was a worse job than I had hoped for. Rusty bolts and more of it had to be taken off in order for it to come out.

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Split the fan casing and removed the squirrel cage.

 

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Cleaned the motor up and split the case open. Wasn't great looking.

 

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Yup, it's been hot enough to melt the solder off the commutator contact posts. New motor time (one that's 12v).

 

Phil

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Curiosity got the better of me tonight.

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So I spun the commutator clean in the drill.

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Redid the solder joints.

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Oiled the bearings which were dry dry dry (think that was a big cause of problems) and gave it a brief bench test. Not overly bad, I'll redo the main feed wire and go from there.

 

Phil

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I cleaned a significant amount of Alabama out of the fan case and assembled it all together.

 

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Ran it for a while to see what it would do.

 

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6V fully loaded it draws just over 5 Amps. It gets warm-ish but on 12V I need to measure how hot it gets.

 

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Between times I set about on the ducting sheet metal. This piece looks like someone jacked the car up on it.

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Many hammers later and it's looking a bit better. Certainly good enough to move air about, which is better than it was.

Phil

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A small experiment tonight.

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Took the ambient temperature with the motor cold, at rest.

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Ran it 15 minutes at 6v. 15 degrees increase in temperature. 

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Ran it a further 10 minutes at 12v. Not a huge increase, the hottest part by the brushes was 106 degrees so that's a fair bit off 370 for the melting point of solder. I'll pull it apart and check for any signs of distress.

 

Phil

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With the got weather coming in, fuel vaporization is a big problem with this car, so there's a draw-through pump up under the chassis near the tank. 

I had it connected to the starter button but in traffic that's awkward.

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So I added a pull switch and light. Means I can run the pump in traffic easily and clear any vapor lock without having to run it all the time.

That'll work, and it's powered from the ignition circuit so I can't forget to turn it off.

 

Phil

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...and an update to that, I tested it with the pump on full time.

I drove from here to the grocery store at speed then left the car idling in the lot as I checked to see that it wasn't overpowering the pump intake, pipes or float. Everything was happy so I latched everything down and went for a higher speed run on highway 308.

 

Hot damn.

 

The car pulls hard at 60 with the pump on. Off it feels strained. I guess that's my answer, then.

 

Phil

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I had a moment tonight where I got the fussy notion that I needed to fix things.

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So, I pulled the screen wash pickle jar out again because last time I went to use it the damn thing didn't work.

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I had a go at seeing if I could get the main seal any better, but it's already pliable again after a little treatment with brake cleaner. With my finger over the intake tube I could still move the piston up and down, albeit against a modest resistance.

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I replaced the rubber ring with the end off my blow gun nozzle, filed flat and sanded smooth. With that fitted I couldn't pull the piston down, the seal grabbed as it should.

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Reassembled it and bingo. Screen wash.

Múy bien.

 

Phil

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Last bit of good weather for the next couple weeks so I decided to go for a spin in the car.

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Kept that up for 15 miles or so both directions. An Eye-Tal-Ee-Un Toon-Up appears to have done a world of good because it's running nicely now. Blown all the soot out from me driving it about gently like Driving Miss Daisy.

Really need to redo the suspension. It's lovely to ride in on smooth asphalt but as soon as you get on sun beaten, truck-rutted old blacktop it has you sawing the steering wheel back and forth to keep it going where you want it to go.

But, it does do okay. Burned about a quarter of the tank tonight on this escapade, the economy is likely better at about 45 but it got nice and toasty and run like it needs every once in a while.

Fun? Yes.

 

Phil

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