I have an AMX that requires quite a bit of arm power to get it to move from the parked position. Over time, this wreaks havoc on the collimator. Any experience out there with what to check, adjust or service in these arms?
Tue Nov 28 2017
Horizontal Arm
Tue Dec 05 2017Reply from Maggie O'Mahoney Dorris
Tue Dec 05 2017Reply from Ty
It's probably a bad brake cable. They like to break near the grommet where they enter the horz arm, on the inside. I've had to replace several.
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Wed Dec 06 2017Reply from oldxrayguy
Wed Dec 06 2017Reply from Bad Frank
@Maggie: No, I haven't tried that yet. Considering my next response, that may be the way to go.
@Ty: Brake cable is good, as brake does release. But, this unit had been running with a broken brake cable for a while when I first started working at this site in 2014.
@ old x-ray guy: Park latch does release and the brake releases, but the initial effort to get it moving is still too much. Considering all I posted here, I'll probably try replacing the brake itself.
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Thu Dec 07 2017Reply from Bad Frank
Well, I disassembled the column assembly. In the bearing tracks are a groove, across the surface at about where the bearing would sit if parked. I suspect that this groove is what is putting up the initial resistance. Has anyone else noticed this? This is my first time tearing into one of these arms, so I don't know if that groove was intended to be there.
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