Oh, for gosh sakes, I thought as an "Old Timer", I'd seen or heard of
everything!
I've never seen that bearing froze up!
Thanks for reporting back.

Old Chief Lynn


"Sun Dragon" wrote in message
...
Thanks for the replies, I took the scanner unit apart and found the
problem
to be the waveguide coupling bearing was siezed up. Because the waveguide
is
rectangular in shape and oriented with the long dimension fore and aft
produced the target display problem of not seeing targets port and stbd!

thanks again.


"Sun Dragon" wrote in message
...
I have a small Furuno radar where the echo return image is missing on the
left and right portion of the screen. The fore and aft images are fine.

I suspect the "brushes" or slip rings in the scanner unit are worn in
the
2 o clock thru 4 o clock and the 8 o clock thru 10 o clock regions.
Am i correct in this assumption and if so, are kits available to renew
the
contacts in the scanner?

Thanks,

Capt J. Vincent Collins
Master Oceans
F/V Sun Dragon

In article ,
"Lynn Coffelt" wrote:

Oh, for gosh sakes, I thought as an "Old Timer", I'd seen or heard of
everything!
I've never seen that bearing froze up!
Thanks for reporting back.

Old Chief Lynn


That really makes no sense Lynn. If the Bearing was froze, the antenna
wouldn't Rotate, and it wuld be evident externally. Now if the Rotory
Joint was froze, the Alignment Keeper on the top of the T/R Pan, would
have to be missing, or broken to allow for the miss-alignment of the two
Flanges. It should only give a very narrow widow of passable RF. Just
a couple of degrees, plus or minus, at each correct alignment.

If the later, is the case, then I am with you, very strange occurance,
indeed.....


Bruce in alaska that would be one for the Books.......




"Sun Dragon" wrote in message
...
Thanks for the replies, I took the scanner unit apart and found the
problem
to be the waveguide coupling bearing was siezed up. Because the waveguide
is
rectangular in shape and oriented with the long dimension fore and aft
produced the target display problem of not seeing targets port and stbd!

thanks again.


"Sun Dragon" wrote in message
...
I have a small Furuno radar where the echo return image is missing on the
left and right portion of the screen. The fore and aft images are fine.

I suspect the "brushes" or slip rings in the scanner unit are worn in
the
2 o clock thru 4 o clock and the 8 o clock thru 10 o clock regions.
Am i correct in this assumption and if so, are kits available to renew
the
contacts in the scanner?

Thanks,

Capt J. Vincent Collins
Master Oceans
F/V Sun Dragon





--
add a 2 before @

"Bruce in Alaska" wrote in message
...
In article ,
"Lynn Coffelt" wrote:

Oh, for gosh sakes, I thought as an "Old Timer", I'd seen or heard of
everything!
I've never seen that bearing froze up!
Thanks for reporting back.

Old Chief Lynn


That really makes no sense Lynn. If the Bearing was froze, the antenna
wouldn't Rotate, and it wuld be evident externally. Now if the Rotory
Joint was froze, the Alignment Keeper on the top of the T/R Pan, would
have to be missing, or broken to allow for the miss-alignment of the two
Flanges. It should only give a very narrow widow of passable RF. Just
a couple of degrees, plus or minus, at each correct alignment.

If the later, is the case, then I am with you, very strange occurance,
indeed.....


Bruce in alaska that would be one for the Books.......


Yup, once in a while the scanner bearing seal or water in the motor
housing would let the scanner main bearing get corroded or filled with gunky
stuff, but never saw the rotating joint freeze up!
I have, a couple of times, managed to successfully break, bend or
otherwise defeat the waveguide alignment scheme. Targets were not all that
lively, and wiped out the crystals in fairly short order. Probably didn't do
the maggie too much good either. Head hanging in shame. Again.

Old Chief Lynn

Lynn Coffelt wrote:
"Bruce in Alaska" wrote in message
...
In article ,
"Lynn Coffelt" wrote:

Oh, for gosh sakes, I thought as an "Old Timer", I'd seen or heard of
everything!
I've never seen that bearing froze up!
Thanks for reporting back.

Old Chief Lynn

That really makes no sense Lynn. If the Bearing was froze, the antenna
wouldn't Rotate, and it wuld be evident externally. Now if the Rotory
Joint was froze, the Alignment Keeper on the top of the T/R Pan, would
have to be missing, or broken to allow for the miss-alignment of the two
Flanges. It should only give a very narrow widow of passable RF. Just
a couple of degrees, plus or minus, at each correct alignment.

If the later, is the case, then I am with you, very strange occurance,
indeed.....


Bruce in alaska that would be one for the Books.......


Yup, once in a while the scanner bearing seal or water in the motor
housing would let the scanner main bearing get corroded or filled with gunky
stuff, but never saw the rotating joint freeze up!
I have, a couple of times, managed to successfully break, bend or
otherwise defeat the waveguide alignment scheme. Targets were not all that
lively, and wiped out the crystals in fairly short order. Probably didn't do
the maggie too much good either. Head hanging in shame. Again.

Old Chief Lynn



That's what you get when you don't use a good brand of relative
bearing grease!
g

.. Yup, once in a while the scanner bearing seal or water in the
motor
housing would let the scanner main bearing get corroded or filled with
gunky
stuff, but never saw the rotating joint freeze up!
I have, a couple of times, managed to successfully break, bend or
otherwise defeat the waveguide alignment scheme. Targets were not all
that
lively, and wiped out the crystals in fairly short order. Probably
didn't do
the maggie too much good either. Head hanging in shame. Again.

Old Chief Lynn



That's what you get when you don't use a good brand of relative
bearing grease!
g

Good grief, is that something made from aunts or cousins?..........
ducking...............

OCL

"Lynn Coffelt" wrote in news:heWdneG_8-
:

That's what you get when you don't use a good brand of relative
bearing grease!
g

Good grief, is that something made from aunts or
cousins?..........
ducking...............

OCL


Our SPS-6 aboard USS Everglades (AD-24 may she rest in peace) ran on a
pair of Fallopian tubes. Every new ET aboard was sent down to After GSK
with a supply chit in his hands for a new pair for the radar as soon as
possible, to welcome him aboard.

The supply guys in After GSK were in on it. They'd act non-interested
and take the paperwork, stamping it properly, then go in the back and cut
off two 6" lengths of rubber surgical hose specially planted for the
newbie ETs. Of course, they'd make him SIGN for the new tubes before
leaving so we could publish proof of his stupidity in the ship's next
newspaper...(c;

There were two fittings on the SPS-6 antenna mount and one on the
Raytheon Pathfinder's mount that required relative bearing grease. It
came in a green government tube marked "Jelly, Petroleum" from Forward
GSK, a different series of ladders into the bilge level storeroom in the
bow.

Between the bogus supply runs and the mail bouy watch on the bullnose,
after a couple of weeks, it was real hard, for some reason, to get young,
green technicians to make any real supply runs....Until that time, it was
great fun!

Larry ET1
Supervisor - Shop 67B - Metrology Laboratory
USS Everglades (AD-24) '66-'69
Cruisin' the Med for Uncle Sam

A roll of aluminum foil and a "green" deckhand made for good humor, I would
instruct the deckhand to wrap himself in foil, stand upon the foredeck, as
we would command him to hold himself in rather odd body positions while the
chief and myself up in the wheelhouse "tuned" the radar. If possible we
would do this in port, prefferably so the crews of other vessels could be
witness to the charade. The tinfoil hat was always the crowd pleaser.



"Larry" wrote in message
...
"Lynn Coffelt" wrote in news:heWdneG_8-
:

That's what you get when you don't use a good brand of relative
bearing grease!
g

Good grief, is that something made from aunts or
cousins?..........
ducking...............

OCL


Our SPS-6 aboard USS Everglades (AD-24 may she rest in peace) ran on a
pair of Fallopian tubes. Every new ET aboard was sent down to After GSK
with a supply chit in his hands for a new pair for the radar as soon as
possible, to welcome him aboard.

The supply guys in After GSK were in on it. They'd act non-interested
and take the paperwork, stamping it properly, then go in the back and cut
off two 6" lengths of rubber surgical hose specially planted for the
newbie ETs. Of course, they'd make him SIGN for the new tubes before
leaving so we could publish proof of his stupidity in the ship's next
newspaper...(c;

There were two fittings on the SPS-6 antenna mount and one on the
Raytheon Pathfinder's mount that required relative bearing grease. It
came in a green government tube marked "Jelly, Petroleum" from Forward
GSK, a different series of ladders into the bilge level storeroom in the
bow.

Between the bogus supply runs and the mail bouy watch on the bullnose,
after a couple of weeks, it was real hard, for some reason, to get young,
green technicians to make any real supply runs....Until that time, it was
great fun!

Larry ET1
Supervisor - Shop 67B - Metrology Laboratory
USS Everglades (AD-24) '66-'69
Cruisin' the Med for Uncle Sam

In article ,
"Lynn Coffelt" wrote:

"Bruce in Alaska" wrote in message
...
In article ,
"Lynn Coffelt" wrote:

Oh, for gosh sakes, I thought as an "Old Timer", I'd seen or heard of
everything!
I've never seen that bearing froze up!
Thanks for reporting back.

Old Chief Lynn


That really makes no sense Lynn. If the Bearing was froze, the antenna
wouldn't Rotate, and it wuld be evident externally. Now if the Rotory
Joint was froze, the Alignment Keeper on the top of the T/R Pan, would
have to be missing, or broken to allow for the miss-alignment of the two
Flanges. It should only give a very narrow widow of passable RF. Just
a couple of degrees, plus or minus, at each correct alignment.

If the later, is the case, then I am with you, very strange occurance,
indeed.....


Bruce in alaska that would be one for the Books.......


Yup, once in a while the scanner bearing seal or water in the motor
housing would let the scanner main bearing get corroded or filled with gunky
stuff, but never saw the rotating joint freeze up!
I have, a couple of times, managed to successfully break, bend or
otherwise defeat the waveguide alignment scheme. Targets were not all that
lively, and wiped out the crystals in fairly short order. Probably didn't do
the maggie too much good either. Head hanging in shame. Again.

Old Chief Lynn



No shame required, I amagine that it just wasn't totally thought thru...
and I actually went over and looked it up in the Service Manual.....

Bruce in alaska
--
add a 2 before @