When to add spacers/replace springs for AHC? (1 Viewer)

[matador454]

New owner here and trying to do preventive maintenance of the AHC To lengthen lifespan. It’s an 06 with ~140k miles on it so hopeful that by doing all this I can get a few more years out of it before maybe deleting. I did the fluid flush and have the torsion bars ready to turn, but the front and rear pressure is reading 7.9. Since the TBs will only unload the front I figure the only option to lower these rear pressures is a spacer or new springs.

Is this accurate/is a spacer enough to bring the pressure down or is too far gone and I need a spring?

Also I assume there is no use cranking the front pressures down? Or still worth it to lessen the stress?

TIA

 

[baggar11]

Here's what I would do. Crank the fronts until you're around 6.8 - 6.9 and throw some King springs in the rear @ around $230 shipped. A spacer will probably work to bring pressures down otherwise.

 

[bamabrock]

New owner here and trying to do preventive maintenance of the AHC To lengthen lifespan. It’s an 06 with ~140k miles on it so hopeful that by doing all this I can get a few more years out of it before maybe deleting. I did the fluid flush and have the torsion bars ready to turn, but the front and rear pressure is reading 7.9. Since the TBs will only unload the front I figure the only option to lower these rear pressures is a spacer or new springs.

Is this accurate/is a spacer enough to bring the pressure down or is too far gone and I need a spring?

Also I assume there is no use cranking the front pressures down? Or still worth it to lessen the stress?

TIA

Take the time and read this thread.

Definitive list of AHC maintenance items

My nagging "issue" with AHC is wondering if the suspension doesn't feel quite right. I feel bumps pretty well and I subjectively recall an older 100 series land cruiser standard suspension feeling like being on a cloud vs the small cracks in the road. The question is driving me insane when I'm...

forum.ih8mud.com

 

[matador454]

Take the time and read this thread.

Definitive list of AHC maintenance items

My nagging "issue" with AHC is wondering if the suspension doesn't feel quite right. I feel bumps pretty well and I subjectively recall an older 100 series land cruiser standard suspension feeling like being on a cloud vs the small cracks in the road. The question is driving me insane when I'm...

forum.ih8mud.com

Every time I think I’ve read through that thing enough it turns out I’m wrong. After reading through that and a few others it seems like the options are to use new springs and add spacers or use king springs.

I likely will just adjust the TBs to get in spec then monitor the rear before getting kings once it gets up around 8.5. Sounds like the cost effectiveness of the 3Mpa drop is better than OEM plus spacers

 

[bamabrock]

Every time I think I’ve read through that thing enough it turns out I’m wrong. After reading through that and a few others it seems like the options are to use new springs and add spacers or use king springs.

I likely will just adjust the TBs to get in spec then monitor the rear before getting kings once it gets up around 8.5. Sounds like the cost effectiveness of the 3Mpa drop is better than OEM plus spacers

Here is the best post that helped me understand how to tweak the AHC pressures.

Definitive list of AHC maintenance items

So I am happy that my heights are adjusted, and pressures are now w/in spec for F & R, but still want to know about adjusting the height sensors. For the rear, it looks like only one adjustment at the slider. For the front, it looks there are 3 different opportunities to adjust - the big slider...

forum.ih8mud.com