| Re: [GMCnet] Heater Box Debris [message #172734 is a reply to message #172707] |
Sat, 09 June 2012 19:18   |
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USAussie
Messages: 15912
Registered: July 2007
Location: Sydney, Australia
Karma:
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Senior Member |
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John,
Man are you lucky!
One of the things that was noted when brainstormed here and put together the
Fire Prevention Guide was that the resistor network could start a fire in
the heater if it was full of critter crap and from the pictures you've
supplied you got a serious case of it!
If you go to MM X-7725 page 1B-13 you'll find Figure 14 - Evaporator and
Heater Housing Components - Typical. On one of my visits to the COOP we
removed the FACE PANEL and bottom cover to check for critter crap in Double
Trouble.
Looking at the exploded view I note two things: 1) on Double Trouble there
was a steel doubler strip under the bottom cover on the outside directly
under where the evaporator came into contact with the bottom cover. 2) there
were two "sticky strips" on the inside of the bottom cover located directly
under the bottom of the evaporator at the front and rear.
When we reassembled the housing I bent the doubler slightly forming it into
an upside down "U" so it would push up on the middle of the evaporator and
we replaced the "sticky strips." I don't remember what we used.
Regards,
Rob M.
-----Original Message-----
From: Shotwell
I know you've seen this problem before- I saw the previous photos on the
photo site last week, and thought I'd check out our system today. I really
wasn't expecting this - I thought it would be clean and ok. Wrong!
This is where I stopped after a few minutes, and took the pics. With a
mirror, I can see that the whole box bottom half is full of this stuff. The
three fan speed resistors (ours is a '78) were packed with the straw (I said
it's hay, SHE said it's straw).
So, my question - I want to take this box apart. I know I can probably clean
it out with a vac through the hole, but I'd rather do it right. The heater
core is probably packed solid. Are there any step by step instructions, or
tips on the dis-assembly of this heater box?
I know, I haven't checked the manuals, or Gene's site, or called Ken H for
help. Anyway, this might be a good refresher course for some of the
'newbies' that hadn't thought about this yet. As always, any help is always
appreciated!
http://www.gmcmhphotos.com/photos/g6100-heater-box-debris.html
Shot
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Regards,
Rob M. (USAussie)
The Pedantic Mechanic
Sydney, Australia
'75 Avion - AUS - The Blue Streak TZE365V100428
'75 Avion - USA - Double Trouble TZE365V100426
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