Re: [TenTec] TT Centurion Amp Fan

["mcelmer1" <mcelmer1@netecin.net>]

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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