The Green Grendel

[campfire]

GM's NV4500 spec says 4 quarts from empty to full. It took exactly 4 quarts, so it was much, much dryer than I had thought. I poured a 5th quart through the reverse switch hole as I have read good things about overfilling this tranny.

Same for the NP208, it took 4.5 quarts before it was full.

I pulled the drain plugs on the NV4500 and NP208. 208 is clearly contaminated (strawberry milkshake), but the tranny has me confused. I drained out almost 2 gallons of fluid, clearly more than I put in. But it just looks dark and dirty, there is no water apparent in the bucket.

Next up, differentials.

 

[GoGoGirl]

I pulled the drain plugs on the NV4500 and NP208. 208 is clearly contaminated (strawberry milkshake), but the tranny has me confused. I drained out almost 2 gallons of fluid, clearly more than I put in. But it just looks dark and dirty, there is no water apparent in the bucket.

Next up, differentials.

I'm curious, is there a dipstick to check the 208 that would have revealed the milkshake beforehand? My 205 has a dipstick, never thought about worrying beyond what I've seen on it (nice cherry juice red).

 

[campfire]

I'm curious, is there a dipstick to check the 208 that would have revealed the milkshake beforehand? My 205 has a dipstick, never thought about worrying beyond what I've seen on it (nice cherry juice red).

There's no dipstick. What I did was open the upper filler hole and dip my finger into the fluid cavity. Not only did this reveal that the fluid level had dropped, the film that I was able to locate with my finger was nice and white and frothy. Exactly what I expected.

Then, after confirming the problem, I pulled the lower plug and let it spray all over my driveway. Some even made it into my bucket!


(Stock picture of an NP241, but the NP208 fill plugs are similar)

 

[campfire]

Aside from finishing the fluid flush and driving around the pasture, this thing hasn't seen road time in a couple weeks. I pulled the dash apart to access the speedometer cable, but there was no disconnect up there. I then traced my problem back underneath the truck. The cable has melted against the exhaust pipe, seizing the cable inside the sheath. I'm 95% sure that happened after I moved it, because it was already broken before that point. Also, despite being plugged in, the cable end has not broken yet, so I do not believe it is rotating. I assume the nylon gear inside the transfer case has broken. I do not want to tear the NP208 apart at this point, so I refilled it and am going to keep using the GPS speedometer for the time being.

With the dash apart, now is a great time to finish tracing my 24V orange wire problem, and maybe even mount some dash speakers. The lack of music is a bummer.


I decided to drive it to work today, but when I pushed the clutch pedal, it wouldn't budge. It had a little bit of spring to it. I pushed a little harder, and it collapsed, going to the floor and staying there. I didn't have enough time or enough daylight to look at it, but it felt much like when the M/C rod bent. This weekend might not wind up being a Suburban weekend after all.

 

[campfire]

Crummy dark pictures, but I've done a few things recently. The GEN2 issue turned out to be a blown 24V fuse (the bottommost fuse in the fuse block). I've wired up four 3.5" speakers in the dash and picked up a modern head unit. I also installed my TinyTach unit. The dash is still torn apart while I wait for my new speedometer cable to arrive, but all 3 electric systems have passed their initial testing.





It's amazing how light a cheap head unit is when it contains a small amp and no CD/tape player. Bluetooth, SD card, USB port, and FM radio are the offerings. Haven't decided whether to rig up an FM antenna yet.



3.5" dash speakers. It sure looks like 4" speakers would fit well, but the almighty interwebz seem to disagree with my tape measure.



The center hole could fit one larger speaker. I'm thinking of finding a larger speaker as the tinny sound is slightly annoying. However, tunes are better than no tunes, and entering the bluetooth era is neat indeed.



But this is the part that will make James happy....

 

[campfire]

Meanwhile, in this distraction, I still haven't changed out the busted master cylinder yet.

Soon. I snagged the last needed piece today, and the speedo cable should be here by Friday. It's time to get this pig back on the road.

 

[campfire]

Also, the residual puddle sand is gonna stay on the floorboard for a while. It's a good reminder that I need to be more careful with the skinny pedal.

 

[ZooMad75]

Crummy dark pictures, but I've done a few things recently. The GEN2 issue turned out to be a blown 24V fuse (the bottommost fuse in the fuse block). I've wired up four 3.5" speakers in the dash and picked up a modern head unit. I also installed my TinyTach unit. The dash is still torn apart while I wait for my new speedometer cable to arrive, but all 3 electric systems have passed their initial testing.



View attachment 246424

It's amazing how light a cheap head unit is when it contains a small amp and no CD/tape player. Bluetooth, SD card, USB port, and FM radio are the offerings. Haven't decided whether to rig up an FM antenna yet.

View attachment 246425

3.5" dash speakers. It sure looks like 4" speakers would fit well, but the almighty interwebz seem to disagree with my tape measure.

View attachment 246426

The center hole could fit one larger speaker. I'm thinking of finding a larger speaker as the tinny sound is slightly annoying. However, tunes are better than no tunes, and entering the bluetooth era is neat indeed.

View attachment 246427

But this is the part that will make James happy....

View attachment 246428

Campy, you are missing the brackets needed for the outboard speakers. How you got it works, but the brackets raise the speakers up slightly off of the dash structure. As far as the center hole is concerned, check out this thread by @TreeFarm . He made a bracket out of a cutting board. Genius. I might take the idea to add a couple more speakers to mine.

https://ck5.com/forums/threads/80-k25-nigel-a-500-daily-driver-build.331304/page-4#post-3814858

 

[GoGoGirl]

As always...one of my favorite threads on this forum as it applies to my vehicle and is just terribly interesting and always educational!

Here's one I never thought of before...where is/are the M1009 original speaker(s)? The only one in my truck sounds like it's in the top middle of the dash. Or is the period-correct radio in mine not an actual original part? I only rode in M1009s a handful of times during my military service and I can't remember if they had radios or not.

 

[campfire]

Campy, you are missing the brackets needed for the outboard speakers. How you got it works, but the brackets raise the speakers up slightly off of the dash structure. As far as the center hole is concerned, check out this thread by @TreeFarm . He made a bracket out of a cutting board. Genius. I might take the idea to add a couple more speakers to mine.

https://ck5.com/forums/threads/80-k25-nigel-a-500-daily-driver-build.331304/page-4#post-3814858

Noted. I know I'm missing the outboard brackets, but I'm not sure how much they matter. I suppose the sound will be more muffled since the speakers are buried further below the foam pad?

 

[campfire]

As always...one of my favorite threads on this forum as it applies to my vehicle and is just terribly interesting and always educational!

Here's one I never thought of before...where is/are the M1009 original speaker(s)? The only one in my truck sounds like it's in the top middle of the dash. Or is the period-correct radio in mine not an actual original part? I only rode in M1009s a handful of times during my military service and I can't remember if they had radios or not.

Thanks!

Originally the military trucks had no audio systems. A plug covers the radio hole in the dash, and the speaker holes were empty. But since the holes are there, it's not hard to add speakers later (like I am doing).

 

[GWeakland620]

Where will you be mounting said "Tiny Tach"?

 

[campfire]

Where will you be mounting said "Tiny Tach"?

That's for me to know and for you to find out!

 

[campfire]

Suffice it to say that I'm doing it differently than @Richcz28 did.

 

[GWeakland620]

Well, I guess.

 

[campfire]

Here is what Richard did:

I like this, but I'm currently not using the lights above the speedometer. We'll see how it goes when I button the dash, but reusing that hole seemed better than punching a new hole off to the side. And you can't beat the visibility of being front and center.

But I haven't put it together yet, so I'm not sure which way I'm going. I have enough wire slack to fit into either hole.

 

[campfire]

This also reminds me that my 24V voltmeter doesn't work.

 

[campfire]

I could take this opportunity to upgrade...

https://powerwerx.com/panel-dual-vo...MInfCRyrbF1gIVhV9-Ch0lcgPmEAkYBiABEgJ5PvD_BwE

 

[ZooMad75]

Noted. I know I'm missing the outboard brackets, but I'm not sure how much they matter. I suppose the sound will be more muffled since the speakers are buried further below the foam pad?

I honestly think if you are just trying to get some sound, how you have them mounted will do. I don't think you are going to be shooting for audiophile level quality tunes in a M1008. You'd need a 1000 pounds of dynamat to quell the noise from the 6.2 if you really wanted quality sound. LOL.

 

[campfire]

I honestly think if you are just trying to get some sound, how you have them mounted will do. I don't think you are going to be shooting for audiophile level quality tunes in a M1008. You'd need a 1000 pounds of dynamat to quell the noise from the 6.2 if you really wanted quality sound. LOL.

Bingo.