The hose has always been close to the belt, even with new mounts. I got the TD later, and remember noting how much farther away the hose was.


W.

The thought did cross my mind when I looked at my TD, that I don't see how new motor mounts will make THAT much of a difference. So it must me that on the SD as compared to the TD, the oil cooler is mounted higher relative to the engine. I wonder if there is a higher rate of engine destruction as a result of failed hoses on the SD over the TD.

This may work as a protector where the hose passes under the PS belt. Not sure if the 1" is the correct size, maybe 3/4" would be better. Edit: Looks like 1/2" may be the best size.

https://www.amazon.com/Aviditi-93933-Repair-Clamp-1-Inch/dp/B0068H4TKQ/ref=sr_1_6?ie=UTF8&qid=1487521108&sr=8-6&keywords=aviditi+repair+clamp

I think the root of the engine mount problem comes from allowing oil and fuel to leak onto the mount. That mount is almost exactly below the primary fuel filter on my 84 SD.

Not long after I bought the car the a hose got nicked by a pulley and made a mess. Fortunately it was in idle warming though I had turned my back on the car while talking to a neighbor.

I noticed the oil dripping from the engine and rushed to shut it down. It's amazing what a quart and half of oil can do to an engine bay including the hood, inner fenders and the DS and top of the engine. I'm so thankful I didn't hop in the car and take off. I could have lost one of the best engines I've ever owned.

I continue to monitor the mount and will add shield to the mount's assembly. I catch all fuel coming from the spin on filter, primary filter and am working diligently to stop all oil leaks, as if.

Both motor mounts on mine seem equally collapsed.

If your lines are too close you can install longer lines to give you some insurance and peace of mind. I essentially did this when I converted to AN fittings and steel braid hose, but others have done it with clamps.

Happened to me too in my 1984 300D. 1 qt left in the pan when my son pulled up after a 600 mi trip and oil everywhere under-hood. A few miles more and the engine would have been ruined. A fan belt had broken, tangled in the p.s. belt and flipped it over so it sat out farther and inverted with the grooves outward like a chain-saw. Cut a small hole in the cooler hose. The motor mounts also might have sagged a bit to help. I cut the new hose 1" longer to keep it away from that evil belt.

Replaced both mounts. Driver's side was more collapsed than the passenger side but I think what really caused the hose to get sawn thru was the fact that the center inner metal portion of the passenger side mount has almost completely separated from the rubber. Under the right torque conditions I'm pretty sure it would allow the right side mount mount arm to rise up and the left side of the engine drop down, putting the PS belt on to the hose.

Passenger side motor mount.

New mounts added about 1" more of clearance. Still much less clearance than on the TD. Haven't decided how to protect the hose yet. Tried a galvanized water pipe repair clamp but the hose is curved close to the PS belt so I didn't like how it dug into the hose at either end of the repair clamp. Perhaps I'll bend a piece of thinwall conduit, cut off the outside of the bend and hose clamp it over the oil cooler hose.

Put 3 hose clamps around the cooler hose directly below the PS belt so if it contacts the hose in the future, at least there will be a small measure of protection.

Put 3 hose clamps around the cooler hose directly below the PS belt so if it contacts the hose in the future, at least there will be a small measure of protection.