[R-390] Cam pins

[bavarianradio at comcast.net]

THanks Norm and Drew, I appreciate all of the tips!! My ultrasonic is just a smidgen too small to submerge the whole thing, I wouldn't do it anyway, you just can't be sure of the condition of the bearings unless you take it apart. Granted, unlike a clock, this assembly is not in constant motion, but is moved occasionally and with no real torque applied. I'm sure the simple green is much less intrusive than the ammoniated stuff I use on clocks as well. I am intending to only do this one RF deck and possibly the spare I have, so I don't want to invest in a new ultrasonic cleaner. (although it would be a tax deduction for the business!)I'm off to make a jig to tap out the taper pins... wish me luck!! 73's Ross W1EKG
----- "Drew P." <drewrailleur807 at yahoo.com> wrote:

Note that for reinstallation of the taper pins, they must must be driven
until they seat, so that there will be no relative motion between cam
and shaft.  They will otherwise elongate the holes in the soft brass of
the cam, and no amount of driving the pin in will correct this.
I had a cam/shaft assembly with such a malady.  I drove out the pin and
removed cam and shaft.  I reassembled the "bad" cam to the shaft with
the pin (to the extent possible) and Loctite 271. I laid the assembly on
a machinist's surface plate such that the cams' "valleys" were facing
down, and twisted the bad cam to alignment with the good.  After the
Loctite had cured, I then drove out the pin from the "good" cam and
reassembled cam/shaft assembly into the RF deck with the pin.
Drew

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