Might explain why pounding the dash fixed the problem before...
-Curt
From: Fred Moir via Mercedes <[email protected]>
To: Mercedes Discussion List <[email protected]>
Cc: Fred Moir <[email protected]>
Sent: Friday, February 10, 2017 1:23 PM
Subject: Re: [MBZ] 1985 300TD Blower Motor
Dan.
My experience with a non-functioning blower in my '85 TD was that the button
for the 0 shut down did not quite return to the rest position.
Exercising the PB switches seem to have cleaned up whatever was sticking.
As ever, YMMV.
Otherwise, Jim is the expert.
Fred
Fred Moir.
Lynn MA.
Diesel preferred.
________________________________
From: Mercedes <[email protected]> on behalf of Jim Cathey via
Mercedes <[email protected]>
Sent: 10 February 2017 10:02
To: Mercedes Discussion List
Cc: Jim Cathey
Subject: Re: [MBZ] 1985 300TD Blower Motor
Solder joints inside the PB array, _especially_ the two side boards that
run the temperature dial and the blower speed overrides, are prone to
cracking and failing. The fix is simple. That system, with the narrow
translucent "Auto" speed button, also uses a separate blower speed
controller relay, which could be failing. Again, solder joints is my first
suspect in this vintage, followed by electrolytic capacitor failure. Both
are straightforward fixes, for he who can solder.
-- Jim
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