THE PORTAL HUB - Pinzgauers, Haflingers, Volvo 303s and more!

Again, the goal is to determine if older clutch discs are more fragile than newer ones. This will help guide folks in their preventative maintenance and spare parts decisions.

http://www.offroaders.com/cheap-tricks/avoid-the-exploding-clutch/ Thanks for adding the explanation thread that further clarifies what this survey is about. Still, I'm curious to hear of anyone's story of them personally experiencing an over-rev clutch failure on their Pinz. Just trying to gauge h...

If you watch the linked video, you'll see exactly how to overspeed one. Simply descend down a hill in low-range and 1st gear with the clutch disengaged. Top speed is 10MPH in low-range + 1st gear per the Operator's Manual. If we presume that's 4500RPM, then coasting down a hill at 20MPH will spin th...

I don't think the drain hole on the underside is going to help much. It's only 5mm and likely very little clearance on the inside. Your best inspection point is to remove the two nuts over the slave cylinder ball-and-socket joint. All that being said, it wasn't particularly obvious that the failure...

This is a survey to find out about member clutch failures, and their likely causes. It's inspired by my recent clutch failure, which mimics another's failure less than a week later which had the same combination of events: original 40yo clutch + overspeed. My goal is to understand if the overspeed f...

Wow ! That's a mighty impressive failure, ground to dust. Well I'll be taking a good but used disk with me on the next trip rather than sitting in the spares pool -- darn good suggestion. Yep. Nothing left of one side of the disc. Even found a few chunks wedged in the spring tines. The flywheel sid...

And do you know the reason why this happens ? No....tis water that goes in to that hole when doing deep water crossings....it makes the clutch liner wet and after that when using the clutch a lot ( like on trails) the clutch becomes hot so it litterly makes the disc explode , this is why theres no ...

I don't think the drain hole on the underside is going to help much. It's only 5mm and likely very little clearance on the inside. Your best inspection point is to remove the two nuts over the slave cylinder ball-and-socket joint. All that being said, it wasn't particularly obvious that the failure ...

To close out this thread, the leak was due to a mis-installed o-ring. 90% of the o-ring was in the groove, and the other 10% was smooshed alongside the shaft. This pin can be safely removed and replaced if the transmission is in neutral. The o-ring seals the shaft, and the retaining bolt is sealed w...

At Hollister hills and clutch will no longer engage. Just before the failure it was slipping progressively more and more. Now it won't engage at all. Plenty of fluid in the reservoir. Pedal resistance feels normal. Before this we were at the top of the mountain and doing a long downhill largely wit...

I think you are missing the point, actually. More data is good, but engineers often get lost in collecting data that isn't actionable or is irrelevant. My contractor friend has a great phrase: "Solutions, not problems" In this case, after removing the slave cylinder, if the situation can't be resolv...

Even if one could look inside such a hole, I don't think it'd change the course of action no matter what is seen. If removing the slave cylinder doesn't yield improvement, the next step is transmission removal since that puts the problem in the clutch itself and access will be required to resolve th...

@rmel -- the hole I see on the underside the bell-housing is maybe 2mm diameter at most -- not sure who has that small of a borescope! Yes, of course, the slave cylinder will be inspected/pulled first. As well a complete visual inspection as much as possible, which includes things like fluid checks....

Well...a good samaritan helped me trailer it home, and I see pulling the transmission in its future. At this point, my prediction is that the disc is be more or less non-existent. As to warning, there were maybe half a dozen clutch engagements before essentially no power was getting to the transmiss...

If we find the right material, we can probably just laser cut what we need. Or, honestly, if we have the right material we can just cut it by hand with an exacto knife