To Drive or Not to Drive: That is the Question... (2 Viewers)

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Joe45 said:
Just remembered!!!
As I was driving through the Great Smoky Mountains a few weeks ago, I heard this loud clanking sound under the HJ-like something metal tumbling. I turned around and found this (the bottom adjustment bracket) sitting on the road:
View attachment 3382126
The top straight bar was in the HJ. I think for the battery hold-down. Not sure.

I thought I had just run over it, from another vehicle, but collected the piece just in case.
Does this look like it could be the bracket for the alternator? It seems to be deformed on the cut, but that can be fixed by heating it up and straightening it.
If it isn't from the HJ, I can likely use it anyway.

And here's the belt that I took off.
View attachment 3382128


Pretty messed up.

Wondering what caused this: misalignment of the pulleys? Not being tight enough?
Click to expand...
Hard to say whether that's the correct adjuster but it definitely needs beating flat again. Big hammer and a solid surface should do it.
Yes that looks like my battery strap.
One thing also to consider if you double pulley is that if you drive the ac from the alternator, you're putting more load on the alternator belt. Better to drive it from the crank shaft so you avoid that.

If you need to make a full set of brackets then might be better to draw them up in CAD and see who can make them?
 
45Dougal said:
Hard to say whether that's the correct adjuster but it definitely needs beating flat again. Big hammer and a solid surface should do it.
Yes that looks like my battery strap.
One thing also to consider if you double pulley is that if you drive the ac from the alternator, you're putting more load on the alternator belt. Better to drive it from the crank shaft so you avoid that.

If you need to make a full set of brackets then might be better to draw them up in CAD and see who can make them?
Click to expand...
True. Not good to put stress on the alternator. Thanks.

CAD would be nice but then I'd have to learn another software, and I'm already swamped with animation related stuff.
I'll probably mock it up in cardboard and then cut it out of steel with a grinder; or even have someone cut it with a plasma cutter or something.
 
Joe45 said:
True. Not good to put stress on the alternator. Thanks.

CAD would be nice but then I'd have to learn another software, and I'm already swamped with animation related stuff.
I'll probably mock it up in cardboard and then cut it out of steel with a grinder; or even have someone cut it with a plasma cutter or something.
Click to expand...
Sometimes Cardboard Aided Design is just as effective ;)
 
So I looked at the alignment of the pulleys. Seems like the alternator and AC pump are perfectly aligned, but a little off from the fan/water pump pulley. What do you think?

Also, the AC pump bracket bumps into a hose connector, keeping the pump from being pushed towards the engine. This prevents the use of a smaller belt and limits the travel, thus preventing proper tension adjustment. At least that's what I make of it.

I'm thinking that cutting that bracket and moving it to the other side would remedy this part of the issue, and allow me to more easily/properly adjust v-belt tension.
Does that make sense?

I'm trying to see if there's a way to mount the AC pump separately from the alternator, but where to I attach it to? If I use the AC compressor as the pivot for belt tension, then the alternator can be rigidly mounted-but not sure.
I'll just have to move that compressor out of the way and maybe deal with one thing at a time.

IMG_3183.jpg
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Sounds like you need to shim the alternator to bring it into line and then rework those adjusters. Weird that they've bent it to fit the wrong side.
Is a complex 3d problem, so probably easiest to do it yourself in 3d rather than suggest something here in 2d tbh.
You have three brackets to play with - maybe they work in some different arrangement?
 
Looks like someone cut your fan blades?
 
45Dougal said:
Sounds like you need to shim the alternator to bring it into line and then rework those adjusters. Weird that they've bent it to fit the wrong side.
Is a complex 3d problem, so probably easiest to do it yourself in 3d rather than suggest something here in 2d tbh.
You have three brackets to play with - maybe they work in some different arrangement?
Click to expand...
I'm wondering if maybe making a static mount for the alternator, and having the AC compressor act as the adjustment part, would work. I don't think having both pivot, especially off of each other, is very effective.

Unless they both get fitted to each other-allowing no movement, and mounting them on a pivoting cradle?
 
I may still have H alternator brackets. No AC ones though. Also have fan and fan shroud as I recall from my son’s truck!
 
Removed the AC pump (hoses still attached).

That pulley at the bottom; the one that looks like a tensioner, that's also a hack-job. Look at the weld. Looks like bubble gum. Seems like the idiot cut the fan blades to make that fit?
Worried about how much that affects the cooling capability of the fan.

Does anyone have a diagram of this? Of the pulley layout?
Now I am sort of stuck because even with making a braket, I'm stuck with a chopped fan and then doing this again if I get a replacement. Would rather start over with stock and figure that out, even if the AC has to go.

IMG_3191a.jpg
IMG_3192a.jpg
 
Maybe I should remove that bracket/pulley, run the belt straight from the engine pully to the alternator and AC pump, and either us that bracket pulley as a tensioner, or use an after market one.
 
I'll try to take some pictures tomorrow of my HJ pulley arrangement when it's daylight again..
 
My alternator is clearly not original hence the adjuster is packed out with a couple of extra nuts, but otherwise it looks pretty original.

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45Dougal said:
My alternator is clearly not original hence the adjuster is packed out with a couple of extra nuts, but otherwise it looks pretty original.

View attachment 3383043

View attachment 3383044

View attachment 3383045
Click to expand...
Oh wow!
Thank you! Thank you! Thank you!

That helps a great deal!!! It looks like the adjuster bracket I picked up off the road may be from the land cruiser after all; it has pretty much the same shape. If it is, then it sat somewhere in that engine bay for years only to fall off a few weeks ago!
Well looks like now I can at least have this thing running-even if its without AC.

How did you manage with a different alternator? Mine has some kind of oil pump behind it with lines going into and from the engine.
 
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Joe45 said:
Oh wow!
Thank you! Thank you! Thank you!

That helps a great deal!!! It looks like the adjuster bracket I picked up off the road may be from the land cruiser after all; it has pretty much the same shape. If it is, then it sat somewhere in that engine bay for years only to fall off a few weeks ago!
Well looks like now I can at least have this thing running-even if its without AC.

How did you manage with a different alternator? Mine has some kind of oil pump behind it with lines going into and from the engine.
Click to expand...
It works fine, but doesn't have the vacuum pump.
The vacuum pump is for the brakes. It has oil feed lines to keep it lubricated.
It sucks air from the tank under the floor, leaving a reserve vacuum for your brake servo.
If its working then your brakes won't feel rock hard and you'll be able to stop easily.

I'm my case it was missing, so I've fitted a modem electric pump, and a small reservoir on the bulkhead.

20230725_085822.jpg


20230725_085845.jpg

Crappy photo, sorry. Difficult angle. I think the pump is from a VW and the tank is from a Isuzu trooper. Anyway the brakes work now :)
 
45Dougal said:
It works fine, but doesn't have the vacuum pump.
The vacuum pump is for the brakes. It has oil feed lines to keep it lubricated.
It sucks air from the tank under the floor, leaving a reserve vacuum for your brake servo.
If its working then your brakes won't feel rock hard and you'll be able to stop easily.

I'm my case it was missing, so I've fitted a modem electric pump, and a small reservoir on the bulkhead.

View attachment 3383245

View attachment 3383246
Crappy photo, sorry. Difficult angle. I think the pump is from a VW and the tank is from a Isuzu trooper. Anyway the brakes work now :)
Click to expand...
Oh. OK.
My brakes work fine-so I guess the contraption is working. In fact, while driving in Florida, I hit the brakes to stop for a turtle on the road. Locked up all four tires and went sideways a little. Yes, a little extreme but I was getting used to the truck. I put the turtle into the water before some a-hole would run it over-seems to be a pastime for some scumbags.

I have a reserve tank under the passenger door (right side for me). Still, maybe would be good to do something different in case I need or want to swap out that alternator in the future.

I need to find a real manual for this truck so I can know what the heck is what and how to fix or replace it!

Again, thank you for the photos! they have helped a great deal!!!
 
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