I found this in the achieves:
I found this in the tt ach.
Doyle,
I would forget adjusting the bearings. I replaced mine about 4 years ago -
TT picked up the tab. I priced the fan a few years ago and priced out at
$40 including shipping.
The fan is a pita to replace. My fan was secured with allen bolts. I should
have replaced them with slotted or phillips head bolts.
Mike
W8TRN
----- Original Message -----
From: "Doyle"<n4vv@comcast.net>
To: "Discussion of Ten-Tec Equipment"<tentec@contesting.com>
Sent: Wednesday, February 02, 2011 5:03 PM
Subject: Re: [TenTec] TT Centurion Amp Fan
/Hi Hank,/
/Thanks for the information about the fan removal. May give it a try/
/after VP8ORK goes QRT./
/Did TT say how to adjust the bearings?/
/See that I have worked you last weekend in the 160 contest, thanks for/
/the Q./
/Thanks again./
/Doyle/N4VV/
/----- Original Message ----- /
/From: "pfizenmayer" <pfizenmayer2@q.com>/
/To: "Discussion of Ten-Tec Equipment" <tentec@contesting.com>/
/Sent: Wednesday, February 02, 2011 6:15 PM/
/Subject: Re: [TenTec] TT Centurion Amp Fan/
/Doyle - Its some what of a pita to get to but the bottom two screws can be/
/reached with a long allen wrench - TT provided the holes which allow a /
/long/
/allen wrebnch to get to those without taking out the subassembly that /
/holds/
/the tubes and filament choke etc. The top two allen screws are not bad ,/
/just takes time a quarter turn at a time ! The ac line plugs in to the /
/side/
/./
/My fan started to squeal when it was only a few weeks old - and TT said to/
/try tightening the bearing s. That required remoiving the label onnthe /
/fan -/
/and then I still had to remove the RFC and parasitic board to get to the/
/screws. I belive the fan will come out without doing that and that might/
/have been easier but I did not have long enough allen wrench at hand (I do/
/now ) ./
/I bought two replacement fans but have not needed them yet ./
/The stock one is a BISONIC 4E-115B-25 115vac /21w at 60 hz. There is one/
/that will fit exactly the same but is about 20 cfm more airflow its a/
/BISONIC 4E -115B 115vac /22w at 60 hz. I bought one of each from Mouser /
/a/
/couple years ago less than $20 each ./
/73 de hank K7HP/
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