Hello,
I have a Yale L83C-060-SBT-090-LP forklift. It worked fine until it was moved by a local forklift company to our new facility. Now when the engine is started it makes a clunking - rattling noise. The noise goes away when the engine rpm is increased. I'm thinking the torque converter flexplate nuts are loose. I'd like to know how to get to the torque converter nuts. Is this something I can access by removing the floor plate or do I have to go underneath the unit?
Thanks,
Mark
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I've had a few flex plates and converters break on my Yales. Symptoms just as you described. Correct repair requires separating engine and transmission to replace the flex plate. Replace the converter seal while you're in there, 'cause if it's not leaking already, it will be soon.
I've also had torque converter lugs break off. Again, separate engine and trans to R&R. Converters can be repaired and re-balanced. Your local transmission shops probably have a resource for this. Much cheaper than a new converter.
On some older trucks that I'm just nursing along, I've had my maintenance guy reach in there with a welder and tack it in place. Generally holds up just fine. Stops the rattle anyway. Not a real elegant repair though.
If the bolts are loose or the flex plate cracked- it will make noise under a no load condition. Put the unit it drive or reverse & slightly powerbrake the unit & check if the noise goes away. If memory serves me right, you can access the flex plate bolts thru the bellhousing by removing the floorboard.
does it drive foword or not the flexplate sometimes breaks
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