[TenTec] centurion fan

[Ernie]

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 at comcast.net>
To: "Discussion of Ten-Tec Equipment"<tentec at 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 at q.com>/
>/To: "Discussion of Ten-Tec Equipment" <tentec at 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/