We Broke Down (again)….

There we were, driving merrily along a ‘ripio’ dirt track from the Salinas Grandes salt pan to San Antonio de los Cobres, in the middle of nowhere, when there was an almighty noise from underneath Big Bertha.  We stopped quickly, expecting a puncture.  But no, it was something much worse, the front propshaft, along with the transfer case output shaft, had come out of the transfer case (along with a lot of oil). The flailing propshaft had caused damage to our exhaust and diesel tank protection plates. Worse, part of the transfer case was also broken.

We were well and truly stuffed!  But luckily for us, the first car that stopped was Martin, a major in the Gendarmeria stationed in Buenos Aries, and he asked if he could help. Yes, please!  He was on his way to visit the local Gendarmeria in the next town (San Antonio de los Cobres) and said he would arrange for them to come and tow us to the town.

While waiting, Dave removed the front propshaft (because the front wheels would turn it), disconnected the rear propshaft from the rear differential and strapped it up and disconnected the gearbox to transfer case propshaft at the gearbox (even in neutral, the internal drag would rotate the gearbox output).

By the time Dave had done this, the Gendarmeria had arrived and we got the tow ropes attached.  The tow to the town went well and we were deposited outside the Gendarmeria. Fortunately we had water and there were some small shops for provisions, if we needed.

Dave then turned his mind to what the hell had happened. MAN sent him the workshop manual for the transfer case and from this Dave ascertained that the mechanical components had been wrongly assembled.

Here is a diagram which explains how the output shaft should be assembled (top) and showing how the output shaft is secured within the transfer case. The bottom shows the actual assembly – nothing holding the shaft in.

The split ring sits within a recess on the output shaft.  The retaining ring (cone ring) then sits between this the bearing.  Unfortunately, on disassembly Dave, found the split ring was on the wrong way around and the retaining ring was on the wrong side of the split ring.  Not good.  And this 10 minute mistake has cost us several thousand Euros in new parts and extra hundreds of kilometres to collect them. VERY frustrating.

On the positive side, with the help of the Gendarmeria and a local blacksmith, we were able to seal the broken transfer case housing and continue driving in rear wheel drive (our normal mode). This was very lucky indeed – as the alternative would be some very long weeks spent in a small (but nice) Argentinian town. We are indebted to Martin for his help.

Sargent Gomez and Mechanic Marcello from the San Antonio de los Cobres Gendarmeria.

The locals were very friendly.  On day three, Lucindo, a local resident asked what we were doing there and we explained our situation.  He immediately invited us to his family home for an asado. Wonderful.

We have now ordered parts from MAN Germany and await their delivery.

To be updated as we progress with repairs…

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