M1031 with serpentine belt questions

[dkdiesel]

I just picked up a 86 M1031. It has a serpentine belt setup with a massive single alternator. From what I can find it appears to be commonly used on the HMMWV ? Was this a common upgrade or did some of the CUCV’s come with this setup? Everything works fine but the power steering pump has a terrible whine that shows up off idle. I’m 90% sure it’s due to the oil feed hose routing between the pump and the reservoir. I’m going to unbolt the reservoir and move it up to get rid of the hump in the hose and see if it gets better.

 

[NDT]

Yes that’s the HMMWV alternator and the military never installed either it or a serpentine system on a M1031. Someone did a very clean install looks like, and did away with the finicky dual alternator setup and troublesome V belts.

 

[dkdiesel]

thank you for the info. Yes someone did a very clean job for sure. Hopefully I can get the power steering cavitation figured out.

 

[cucvrus]

Is the power steering pump still turning in the correct direction?

 

[dkdiesel]

Is the power steering pump still turning in the correct direction?

That’s a good question. I will have to look at that. I assume yes as the hydro boost and power steering work perfect, the pump just screams at higher rpm’s.

 

[Skinny]

Wow, most mods done by previous owners suck and are hacked. This is the nicest belt upgrade I have seen. Aside from having a very expensive alternator I'd keep it.

Makes my Leece Neville 555JHO look like a toy...

 

[royalflush55]

Is the power steering pump still turning in the correct direction?

You better make sure water pump is running the correction too.