If this is the Siemens motor version, HP also used this motor in the 8640B signal generator so searching for replacement parts for that might reveal some possibilities.
Thanks,
Barry - N4BUQ
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----- Original Message -----
From: "Jim Adney" <jadney@...>
To: [email protected]
Sent: Thursday, April 8, 2021 5:12:25 PM
Subject: Re: [TekScopes] 2465 blower
I believe someone mentioned that the 465/475/485 family used the same fan
motor. This got me scared, so I pulled out my 465B Service Manual to
compare. I finally found the fan and the motor is listed as Tek
#290-0536-00, Mfg Code 90201 (Mallory Capacitor!) part #TDC106M025FL (465B
SM, rev E, May 1980). I don't know how similar it is, but it has 13 pins
arranged in a circle.
That referenced AntiqueRadios article called out Tek parts 670-7390-00 or
670-7390-01, completely different series. I wonder if that means the 2465
motors were custom made, as copies of the earlier motors, after Mallory
declined to make more.
A question: What are the chances that any of these motor bearings could be
oiled, before they got too worn. A stitch in time....
BTW, I don't recommend ordinary motor oil for applications like this. You
don't really want detergent oil in something that doesn't have a pump and
filter, and SAE 50 sounds WAY too heavy. Non-detergent or STM (Straight
Mineral Oil) in SAE 20 or 30 are probably better choices.
