AHC Globes Replaced - now REALLY hard and bouncy

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CanuckS100

Joined
Mar 7, 2022
Threads
15
Messages
85
Location
Seattle
Ok, I just swapped my globes in my '99 LX. First time replaced and I've found that when driving at elevation, the suspension would drop to low until I dropped back down.
I removed the pressure, swapped the globes, bled twice, and unwound the torsion bars like 6 times (counter-clockwise). I can't get the pressures down and they're still 8.5 (front and rear) and the ride is SEVERELY hard and feels like it's broken. NOW, yes did purchase the aftermarket globes which could be the issue, but I want to investigate everything else before giving up on them. Thoughts?!?
 
darrenk said:
You need to crank up the torsion bars (clockwise for more spring force) to lower the AHC system pressure.
Click to expand...
Correct.
Cranking the torsions up (clockwise)
Raises the effective spring rate of the torsion. Lowering the pressures (the amount of work) the AHC shocks have to do.

The AHC system is a helper to the torsions and rear springs.
The springs/torsions do most of the work. (But not all)

For other people not OP.
If the pressures are to low that's a good sign your springs/torsions are to much and probably making your truck ride like crap. (too stiff)
 
darrenk said:
You need to crank up the torsion bars (clockwise for more spring force) to lower the AHC system pressure.
Click to expand...
x8o8drifter said:
Correct.
Cranking the torsions up (clockwise)
Raises the effective spring rate of the torsion. Lowering the pressures (the amount of work) the AHC shocks have to do.

The AHC system is a helper to the torsions and rear springs.
The springs/torsions do most of the work. (But not all)

For other people not OP.
If the pressures are to low that's a good sign your springs/torsions are to much and probably making your truck ride like crap. (too stiff)
Click to expand...
Should I be reading the pressures with the AHC Temp sensor unplugged? Not seeing this widely broadcasted when reading pressures.
 
x8o8drifter said:
Correct.
Cranking the torsions up (clockwise)
Raises the effective spring rate of the torsion. Lowering the pressures (the amount of work) the AHC shocks have to do.

The AHC system is a helper to the torsions and rear springs.
The springs/torsions do most of the work. (But not all)

For other people not OP.
If the pressures are to low that's a good sign your springs/torsions are to much and probably making your truck ride like crap. (too stiff)
Click to expand...
Sorry, what's OP?:
  • For other people not OP.
 
CanuckS100 said:
Should I be reading the pressures with the AHC Temp sensor unplugged? Not seeing this widely broadcasted when reading pressures.
Click to expand...
Yes.
If you haven't already found this, it comes in handy.
AHC_Cheat_Sheet_YotaMD.webp
 
Ok, here's where I sit after unplugging the AHC temp sensor and adjusting the torsion bars:
  • Front Pressure: 7.0 (+0.1 from standard 6.9)
  • Rear Pressure: 7.6 (+1.5 from standard 6.1)
  • Front-Left Height Sensor: -1.8
  • Front-Right Height Sensor: 2.0
  • Rear Height Sensor: -1.0
  • Bottle gradation change (L-H): 4-5 ticks (LOW)
Notes:

  • Sensors seem to be hard to pin-point the dead zero. I adjusted with the wheels turned and noticed that when you straightened them out, the heights change.
  • Rear Pressure could be resolved with new springs (it's a '99, so expected to be a bit saggy [insert joke here]).
  • The ride is still harsh!
 
I swapped back to my old globes and now back to my expected ride. Perhaps the new globes were bad?
 
Didn't see you mention it, but did you purchase new OEM globes or aftermarket?
 
CanuckS100 said:
Yeah, mentioned it at the top, but they are aftermarket. Thought I'd give it a try.
Click to expand...
I have no idea what the cost is for aftermarket nitrogen globes for the 100 series Land Cruiser. I know that at the dealership, they’re close to $800 each.

If you need to replace your globes, you should read this thread. IMPEX is indeed legit !!!!!!

I did mine back in 2023, and including shipping and international monetary exchange, my cost was $528 delivered to my door by DHL.

halbeezy

Thread 'Impex is LEGIT 4 new AHC globes. Door To Door from Japan, less than 2 weeks'

It's criminal what the dealership's charge for these.

Got everything in time to change the globes this holiday weekend.

All in including enough AHC fluid for 2 or 3 flushes if necessary <850$

The dealership wanted over 4K to do this.

IMG_1412.webp
  • Like
 
Unrulykid said:
I have no idea what the cost is for aftermarket nitrogen globes for the 100 series Land Cruiser. I know that at the dealership, they’re close to $800 each.

If you need to replace your globes, you should read this thread. IMPEX is indeed legit !!!!!!

I did mine back in 2023, and including shipping and international monetary exchange, my cost was $528 delivered to my door by DHL.

halbeezy

Thread 'Impex is LEGIT 4 new AHC globes. Door To Door from Japan, less than 2 weeks'

It's criminal what the dealership's charge for these.

Got everything in time to change the globes this holiday weekend.

All in including enough AHC fluid for 2 or 3 flushes if necessary <850$

The dealership wanted over 4K to do this.

IMG_1412.webp
  • Like
Click to expand...
Yep, I just did this like 1 week or two ago. Even with my dumbass making the declared value the same as the full price of parts which raises the amount of tariff they tack on it was STILL cheaper for all 4 shipped to me than a single one picked up here in the USA at a dealer.
 
x8o8drifter said:
Yep, I just did this like 1 week or two ago. Even with my dumbass making the declared value the same as the full price of parts which raises the amount of tariff they tack on it was STILL cheaper for all 4 shipped to me than a single one picked up here in the USA at a dealer.
Click to expand...
Would you be willing to share the final price? and what you think it would have been if you declared differently??
 
jbenwah said:
Would you be willing to share the final price? and what you think it would have been if you declared differently??
Click to expand...
From the Impex tread. Page 24.
Messed up and declared the the whole amount of the order. So $439.90.
x8o8drifter said:
And delivered.
2 weeks 6 days from when I started the order on the 23rd.
Globes ($439.90) +Shipping ($128.28) +Tariffs ($82.40) May have "declared" too much) = $650.58 Still cheaper than a single globe from here in the USA.
View attachment 4084930
Click to expand...
 
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