I didn't realize the front pantograph of my GG1 was locked down when I powered up now, it doesn't raise and lower. I hear the motor when its supposed to raise or lower but its not moving.
Any advice on what I might need to do to get it working again would be appreciated.
Thanks
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-Command the pantagraph up.
-Remove the pantagraph
-Look inside the slots and you will see two plastic blocks connected to strings.
-Using a dentil pick or small screwdriver, pull the blocks to the end of travel, away from center.
-Reinstall the collapsed pantagraph. It should spring up. Test.
Thanks Jon,
I'll give it a try tomorrow.
While you have the pan off, place the engine on a test track and power it up.
Cycle the pans, keeping an eye on the little blocks that move the pan. See if they move back and forth as you "raise and lower" the pan.
If they don't, you need to dig into the engine a bit deeper as you may have a slipping or broken drive belt.
Since you can hear the pan motor working, a belt issue may be the cause.
Tom
Tom, thanks I hope I don't have to open it up. Will check the blocks first like you and Jon mentioned.
You can try cycling the pan and moving it up and down by hand to see if it "catches" the pan tabs.
if the motor runs but the small blocks don't move, you need to open the engine up.
It isn't as bad as it sounds. I just repaired the pans on three of my GG1s. The problems ranged from slipping belts to stuck gears. You just need to go slow and deliberate when working so you don't break any wires or loose track of parts.
I am sure the more technical guys will chime in here before long. They all helped me with my defective pans.
Finally, here is a thread with some clues and facts that may help you too...
https://ogrforum.ogaugerr.com/...ting-mth-pantographs
Tom
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