African trail hazards

The offending limb

It was Connie who alerted me, in her inimitable style, as we stopped at the entrance gate to the Moremi Game Reserve to pay the entrance fee.

“Jonathan,” she said, deadpan, “You have a stick up your butt.”

I realized even without checking that she was speaking metaphorically, so I looked at the next obvious spot—the rear of our Troopy. And there it was: a pretty stout limb as a matter of fact, wedged somewhere firmly in the vehicle’s undercarriage and dragging on the ground. Wedged so tightly as to be scoring an impressive furrow behind us. I was pretty sure I’d heard it get there, but the forest track we had followed had been littered with such limbs of various sizes, and I’d gotten used to the odd one smacking the undercarriage when a tire flipped it. The strategy with such limbs lying crosswise is to drive over the middle if possible, as this reduces the chance of flipping, but it wasn’t always possible, and many of the limbs were concealed in undergrowth.

A glance under the truck showed the limb angling up to the rear axle, where it took an abrupt bend in front of the tube and up into the chassis. I got down and slid under the Troopy, gave a yank on the limb, and  . . . nothing. It was well and truly jammed in there. So I slid in all the way, and found that the end had somehow crammed its way past brake, water, and diff-lock lines to lock itself behind a frame crossmember.

And then I noticed the sheen of some sort of liquid. Uh oh.

I could see the water line from our chassis-mounted tank, and it was intact. My next, worried thought was brake line. But the brakes had felt fine as we stopped. By now Graham had crawled under as well, and said, “Gear oil.” We smelled it and sure enough. The stick had ripped off the air line fitting for our ARB diff lock, and severed the line itself. Some differential oil had come out with it.

It took some serious heaving to free the end of the limb and remove it—I’m still mystified as to how it managed to insert itself that firmly in a fraction of a second. There was no way to repair the line—it was now too short and the fitting was mangled. So Roseann found a wood skewer of the approximate inside diameter as the fitting on the diff housing; I cut a short plug from it and used Gorilla Tape to securely fasten it in place. 

We drove the rest of the trip through Botswana and Namibia with the bandage in place. There was no more leakage, so the truck went into its shipping container that way. I’ll fix it properly when it arrives in Arizona. (I’ll check carefully to make sure no oil is being pumped up the air line toward the compressor, which can happen in certain circumstances with ARB lockers.)

I only forgot about the issue once, on the challenging track we took from Twyfelfontein to the Ugab River Canyon. I paused before a short but very steep and loose climb and, without thinking, hit the compressor switch for the locker.

“Uh, watcha doing?” Roseann asked. Oh, right. Of course we made the climb with zero drama and no locker.

In this case I don’t feel that I did anything wrong driving-wise, and I don’t feel that I was remiss in not having spare air line and fittings along. You just can’t predict everything. I did learn, however, to pay attention when Connie Rodman says there’s a stick up your butt.

And the damage