No Subject

[Alan Cordeiro <cordeiro@avlna.com>]

>
>>From: Andrew Duane USG/PE <duane@zk3.dec.com>

>Hairy green toads from Mars made Patrick Flynn say:

>> Could not find a similar problem in the archives so here goes. When I turn 
>> the climate control on in the morning it will work fine for about 10 minutes 
>> then the fan gets gradually weaker until it quits. Heres the weird part..
>> When I'm making a turn, (left or right does'nt matter) the fan will come
back 
>> on until I straighten the wheels. I'm getting dizzy going around rotarys 
>> trying to keep warm.
>> Any ideas 
>
>Blower motor bearings.
>
>Mine squeals like a stuck pig, but stops if I decelerate or go down
>a hill. The bearings are very direction-sensitive.
>
>Andrew L. Duane (JOT-7)			duane@zk3.dec.com

My personal experience shows the first problem to be motor brushes
that are about at the limits of their life. A short life extension
MAY be obtained by bending down on the brush holder at the top
( below the little right angle air cooling rubber hose ), push down
with a screwdriver....

The squealing noise is from bearings running dry. TEMPORARY fix is to spray
some silicon lube spray into the innards of the motor. Touch and go on that
one, depending on if it is the front bearing, of the one near the brushes.

Bite the bullet, get a new motor, on an '86 you are overdue. $115-125, 
depending on who has it "on sale".

For the procedure on replacing it, MR. NED BENNETT came up with the original
"knife-to-the-plastic-case" concept about two years age. It has been refined
by repeated trial-and-error to a fine art. I believe the archives have
the latest copy of the procedure.

BTW, from my experience, the "correct way" takes 4 to 8 hours, I have heard
the more daring way is only one to two hours.

Alan Cordeiro
'86-5kQ, new fan, no problems for almost 1.5 years.......