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For the record, a new cap solved my eruption problem. A new lower radiator hose with a shield solved my problem of air being sucked into the coolant. I still don't have the *right* lower radiator hose, but I have one that doesn't leak and is shielded from the belt. The cooling system holds...

I'm confused. If I understand correctly, the stock 3.08 M1009 axles and the 700R4 0.70 overdrive would give you a final drive ratio of 2.156. With 33" tires at 2100 RPM, that should give you 95MPH. But you report 78MPH at 2100 RPM. Might you be running 3.77 axles? Nice truck, in any case.

That is clearly different from the stock K30 hose, left, which other CUCVs and the K30 use. A part number would be *really* helpful!

A picture would be very helpful. Thanks!

The lower hose makes a bunch of turns that the upper does not. The upper shield would not help protect the lower hose. If you look at post 306, the first photo shows the view from the water pump end of the hose, You can see how the hose makes turns before the rubbed spot. The third photo...

Whatever you do, hang onto the hose you have! Don't repeat my mistake. We replaced all the rubber, and trashed the old hose before we realized the K30 replacement rubs the belt. I wish I still had that old hose, to use as a model for finding a new one.

The M1010 has a unique alternator configuration, requiring a different lower radiator hose. I've not been able to find a part # for that hose. There are threads on SS that talk about this. Some folks modify the K30 hose, which I tried to do. The TM mentions a lower hose shield, which is not...

LN says it's a re-man using non-LN parts. It was sold to me as a new LN. I am pusuing this.

I have never replaced a radiator cap before. And I'm old! Thanks for the lesson!

I finally traced down my current drain. It's the upper alternator, the 12V Leece Neville installed as part of the Plan B Mod. When I disconnect the cable from the forward battery negative post, I measure 13V and 8.5 milliamps between the cable and the post. I tried pulling fuses, and found...

Prior to my 1000-mile road trip, my belts were tensioned properly. Now, they're so stretched out that I don't have enough range of adjustment to bring them to proper tension. I just ordered some NAPA power rated belts. They use kevlar cords internally. Maybe they won't stretch out so quickly.

New cap installed. I didn't realize how dried out and hard the old cap's seals were until I compared it to a new one.

Just completed a 1,000 mile road trip to see Penn State play Illinois. I have a nephew who is a senior at Penn State, and it was a bit of a family reunion. I did my usual pre-road-trip inspection, and found coolant on the driveway. The lower alternator belt ate a hole in the lower radiator...

So it seems my M1010's radiator outlet took a shot at some point in its life. Photo of the dent is below. I have to position the hose clamp hard up against the radiator to get a good seal. That works OK, but seems less than ideal. How do I fix this without causing collateral damage? Is...

M1010 Cab cable opening grommet The M1010 has a cable opening at the back passenger side of the cab. I run 110VAC through that opening, to feed battery chargers etc. when parked long term. I found a grommet that fits the hole well, to protect the cable from the metal edges of the hole...

The plot thickens. It turns out my lower alternator belt rubbed a hole in my lower radiator hose, again. There's about 1" clearance between them when parked. I guess there's enough movement that they rub together sometimes. I guess that makes sense. The belts move with the engine, and one...

Look in the TM 9-2320-289-20, section 3-25, ENGINE IDLE SPEED ADJUSTMENT. 5. Use an insulated jumper wire from front battery positive (+) terminal to adenoid terminal (3) to energize fast idle solenoid (4). 7. Adjust extended fast idle solenoid plunger (2) by turning hex head of fast idle...

Crane Axle urethane King Pin Spring Eliminators. Upgrade gauge of heavy-current wires like those carrying alternator current, and the big grounds. 33" tires (require no lift) Banks Sidewinder LED lights Winch Serious rust treatment/prevention.

I have a belt that thrums like a guitar string when idle. It's a new belt, the right size, and properly tensioned. It stabilizes at higher RPMs. This might be part of your idle vibration. It is for me. https://www.youtube.com/watch?v=FaQa3nKBVqk

Last night I had a chance to test this. On my CUCV, there is a big difference between loosening a radiator cap and using a no-pressure cap where the internal ring has been removed. With the no-pressure cap, you tighten the cap fully, so no fluid leaks at the cap. Any pressure just pushes...