Sac Cerevisiae
Reid
Shocks may pass visual inspection but could be the issue. How many miles on the suspension? Are you stock or do you have heavy modifications?
LX570 AHC Globe/Accumulator Replacement (1 Viewer)
- Thread starter NKP Garage
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Sac Cerevisiae
Reid
Shocks and struts are relatively inexpensive. At 180k miles I’d imagine they’re contributing to your issue. I’d recommend looking into some new shocks and potentially some springs.
Also, could be alignment issues but my wild guess is shocks.
nwfl4runner
GOLD Star
You shouldn't limit your inspection to just the fluid. Check UCA/LCA bushings both front and rear, and sway bar bushings. Consider coil springs as well. All of that contributes to the ride quality.
Thank you so much for your feedback guys. It seems I need to perform the height test and Neutral Pressure test to find out any sag in the springs that is causing extra load on AHC and fix that by compensate the Torsion bars in the front and spacers in the back before I move on to replacing the globes. However, all the information I have found is for LX470. @baktasht did you runt those tests on your LX570 before you changed your globes?
The 200 uses a different suspension than the 100. No torsion bars up front.
oh, thank you for educating me. I sound like a total noob that I am. So, how can I test for the spring sag?
ramangain
Clarksonian disciple
Thank God!
None so far. I may do a total rebuild of both front and rear but not ready for that yet.
i have a 2011 LX with 96k miles, I checked my AHC fluid tank today and it looks empty, bone dry, however the system still works, I have an appt scheduled next week for my mechanic to check it out, hoping for the best! In reviewing the scheduled maintenance documents, looks like it should have been changed around 75k, i bet it wasn't done.
did you shine a bright light into the reservoir from the spare tirearea?
hard to tell fluid level unless you really light it up.
i tried, seems to be some undercoating on the very bottom of the tank that makes it difficult to see if it is bone dry, but i am mostly certain that there is very little. when i have the vehicle shaken while I have a light on the tank, i don't see any move.
ramangain
Clarksonian disciple
You don't need to guesstimate on fluid level.
Wrap a paper towel around a ruler. Dunk it in the tank until the ruler hits the bottom. Pull out.
Paper towel clearly indicates level of fluid from tank bottom. For the overtly anal, you can measure the exterior dimensions of the tank and calculate the amount of fluid.
Wrap a paper towel around a ruler. Dunk it in the tank until the ruler hits the bottom. Pull out.
Paper towel clearly indicates level of fluid from tank bottom. For the overtly anal, you can measure the exterior dimensions of the tank and calculate the amount of fluid.
Nope nope. You gotta get in there and light it up from the side.
Check out this thread:
forum.ih8mud.com
Check out this thread:
'14 LX570 AHC Bleed/Fluid flush...by an unprofessional
Hey guys and gals, My LX is now 6 years old (45,000kms) and I'm going to attempt to flush the AHC system to hopefully smooth out driving. Tires are Geolander G015's at 38psi. Maybe its all the job walk-thru's available online, but I'm feeling a bit over confident...and I don't think I should...
forum.ih8mud.com
Nope nope. You gotta get in there and light it up from the side.
Check out this thread:
'14 LX570 AHC Bleed/Fluid flush...by an unprofessional
Hey guys and gals, My LX is now 6 years old (45,000kms) and I'm going to attempt to flush the AHC system to hopefully smooth out driving. Tires are Geolander G015's at 38psi. Maybe its all the job walk-thru's available online, but I'm feeling a bit over confident...and I don't think I should...
I lit up the reservoir like a light bulb from the side, can see any fluid, however the AHC light is not on, which is odd. Also the reason I am down this road is for the past few weeks, the rear end drops rapidly after I get off the freeway, only after driving on the freeway, usually at the stop light at the end of the ramp, within a minute or so.
ramangain
Clarksonian disciple
Cannot see any fluid? Next step is quite obvious - add fluid
the system is pressurized, I am not prepared to do a bleed, my mechanic will handle it next week, just looking for a better understanding heading into it, as the majority of possible repairs can be thousands
Normal btw.
System is not pressurized in the tank (or is very low) . You can open the fill tube and add at will. I suggest a 200cc syringe.
ramangain
Clarksonian disciple
No worries. I've made most, if not all, mistakes with AHC maintenance and got things healthy again on my own on my 01 LX. Air can always be purged from the system. Leaks are pretty obvious, even the small ones. Techstream is absolutely necessary to get a grip of what to adjust when pressures and height sensors consistently read wonky; for $50-70 bucks it is the best tool investment for any modern LC/LX
