Front end dropping overnight

[MIskier]

After rebuilding my compressor I noticed over the last two days that the front end is dropping a significant amount over night. I have double checked the airline connections and there does not seem to be anything loose.

Where should my next location be to check, front airblock?

Edit: There are no codes or faults showing.

 

[MontyMog]

Front valve block on the passenger side. There are a few YouTube videos about it

 

[NickH]

Try using soapy bubbles as well to identify leaks.

 

[A.J.M]

Front valve block is leaking. Mine did the same.

Easy to change though.

Jack car up and support at the front, both sides.
Remove wheel arch and also wheel arch liner. There are about 7 or 8 of the little black pop out holders to remove from the liner.
The valve block is located on a cross member. It's a 13mm spanner to undo the 3 pipes.

Be warned, when you loosen the pipes, the full system will empty of air. the car will drop down. Make sure the front is supported.

It lifts off the cross member by moving it up and then towards you as it has 3 mounting slots on the cross member.

Refit new one, redo the pipes and put the arches back.

The car will need to run and idle for a while as it builds up the pressure for the system.

It MAY throw up "suspension will rise when system has cooled down" warnings, that's normal. Let it work its stuff and don't rush it.

 

[Colin Hughes]

Yup, the box with the part is sitting on my front seat to install next week.

 

[GORM]

I had success rebuilding the part. No kit, just removing taking apart, cleaning and reassembling.

 

[unseenone]

While you are fiddling with air leaks and such it would be worthwhile to have a look at this thread if you have not already. http://www.expeditionportal.com/for...pture-isolation-valves-and-changed-bump-stops

It addresses some areas worth looking at for potential ruptures and cure. Worth consideration before there is an issue.

 

[medicfernando]

After rebuilding my compressor I noticed over the last two days that the front end is dropping a significant amount over night. I have double checked the airline connections and there does not seem to be anything loose.

Where should my next location be to check, front airblock?

Edit: There are no codes or faults showing.

After spending months looking for a leak, valve blocks, springs etc, I found a small leak (tiny really) in my compressor body. I changed the compressor, no more leak. Make sure that after rebuilding your compressor, you have no leaks at all. That is likely the culprit if it started settling after you rebuilt it. Maybe it is the dry air in Utah, but my friend that is a 20 year LR mechanic told me that valve blocks almost never fail. Good luck!

 

[Colin Hughes]

So updated to the Arnott front air bags a few months ago, still drop overnight at front left corner, changed front valve block yesterday, still drops at front left overnight. Frustrating. I do notice that even if I stop somewhere for ten minutes, when I restart the compressor always come on for a short period of time. Maybe a very small hole in one of the air lines or a leak at the compressor. ??

 

[medicfernando]

So updated to the Arnott front air bags a few months ago, still drop overnight at front left corner, changed front valve block yesterday, still drops at front left overnight. Frustrating. I do notice that even if I stop somewhere for ten minutes, when I restart the compressor always come on for a short period of time. Maybe a very small hole in one of the air lines or a leak at the compressor. ??

Sounds like a leak in the compressor. Very common. Haven't heard of air lines leaking very often.

 

[Colin Hughes]

Just trying to wrap my head around the leaking compressor causing the left front to drop. Isn't the front valve block closed from the compressor. Wouldn't a leaking compressor drop all corners or just empty while parked.

 

[Colin Hughes]

Turns out the front valve block didn't get installed by the shop on Friday. Was done yesterday, truck stayed level all night, compressor ran for about ten seconds this morning on startup ��

 

[medicfernando]

Turns out the front valve block didn't get installed by the shop on Friday. Was done yesterday, truck stayed level all night, compressor ran for about ten seconds this morning on startup 😀

Good news!