DanW
Well-Known Member
It does not have a cooler and doesn't need one. If functioning properly, they'd never see enough heat to justify it. Some of the manuals' slave cylinders were reportedly not bled properly at the factory, causing slipping of the clutch plates which created the heat. Ultimately, it was reported that the heat got as high as 1400 degrees! That's when they went to pieces. So there were three issues supposedly addressed with the recall. Check and properly bleed the slave cylinder, check the clutch for signs of wear, (replace if it fails the wear test) and add a protective sleeve and possible other small parts to the brake/clutch fluid line leading into the master cylinder reservoir.Thanks, I've read the notice. The question is what the "ignition sources" are. My understanding was it was a fuel line, although I can't recall why. I'm not sure what else it could be, as I didn't think the 6MT had a cooler and the only other fluid lines running aft of the flywheel to my knowledge (in the whole vehicle) would be fuel line(s), brake line(s) and a washer fluid line.
There were only a very small number reported to have had the catastrophic failure causing the fire, but clearly the chain of events could get there, and did in a few extreme cases.
The biggest correction for later manual transmissions was likely simply in the proper bleeding procedure and quality checks on the assembly line, plus the small protective sleeve and parts. The transmission, slave cylinder, clutch and housing design do not appear to be flawed, in and of themselves.
This might not all be 100% accurate. It is what I've gathered from various sources. So don't take it as gospel. But it makes sense and supports what the Jeep tech discussed with me when they did the recall work on mine.
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