An airline rupture, isolation valves and changed bump stops

jhawk

Adventurer
I love my lr3 and have memories for every nick, scuff, etc since first 2 miles but this thread just pisses me off that any of us have to worry about such nonsensical engineering shortfalls.

Converting mine to coils was the best choice I've made for my truck so far.

Jim
 

dsm02c

Adventurer

What are the brass fittings between the schrader valve and the 3 way? I simply ordered 1/8" schrader valves and assumed they would just thread in...? Am I crazy or is there something extra I need to buy past the three way, push fittings, schrader valves and air line?

JAK, thanks for answering questions and creating this post!
 
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Jwestpro

Explorer
You're brave! Others have been persecuted for such statements... Luckily for you this ain't Dweb! LoL...

What do you mean to say? There are only like 4 LR3 owners active on discoweb so why would they give rats *** ? I'd expect that crowd to be all about steel springs anyway.
 

JAK

JAK:JeremySnow
Those are check valves. I only wanted to inflate not deflate. They are not really needed, a bit redundant.
 

unseenone

Explorer
I got that protector in today, wow, it seems really really small, are you sure that is the right size. I ordered the translucent so you could actually see the air lines... I'll probably have left over. I ordered 2 50' rolls

1/16" 1/2" 1/32" Black, Translucent 7432K111
 

JAK

JAK:JeremySnow
Yes, spiral wrap just simply expands as it wraps around. The larger the diameter that you are wrapping requires extra length. I also suggest wrapping the ABS sensor wire. I had this wire come loose once while in Death Valley, there are some pretty bad washboard roads there. The wire ended up rubbing on the rim of the wheel and wearing through. Once the two wires shorted to each other the whole truck faults, reduced speed, bump stops and no terrain response. I also tie wrap the wire to clips so that it cannot pop out.
 

luckyjoe

Adventurer
JAK - Re: Taller bump stoops

Did you gain much, if anything, in ride height on-the-bump-stops? Also, did you have to do any EAS re-programing to compensate?
 

JAK

JAK:JeremySnow
JAK - Re: Taller bump stoops

Did you gain much, if anything, in ride height on-the-bump-stops? Also, did you have to do any EAS re-programing to compensate?

http://www.expeditionportal.com/forum/attachment.php?attachmentid=205895&d=1389624566&thumb=1

Ride height at the bump stops was increased by about an inch. This is a reduction in upward articulation. Break over ground clearance is a limiting factor on an LR3/4. I decided to give up articulation to gain ground clearance afforded by running the 33 inch tire, while still being ambulatory when on the bump stops. So when I'm on the bump stops I have gained 2 inches of clearance with the taller tire and another inch due to the change. That makes an extra three inches of ground clearance when faulted to the bump stops. As you can see from the picture I still have pretty good ground clearance even if I do not bypass and fill up manually. The only other failure that cannot be dealt with here is an airbag rupture, which I have never heard of happening before.

No change was needed to EAS to compensate. The system will fault going over a speed bump when in access height mode though. I think this is because the EAS computer thinks that it should have more articulation but instead bottoms out.
 

luckyjoe

Adventurer
Ok, thanks for the details. I'm thinking about taller bump stops for my RRC. New air bags and manual inflation lines/valves will be installed this weekend, then I can better determine if taller bumps will be of value. My main consideration is clearance for a slightly taller tire, should the EAS fault to bump stops.
 

Dmarchand

Adventurer
I modified the bump stops in the shock absorber to remove about 1.5 inches of upper travel. I debated using spacers between the spring and frame but I decided that the risk of over extension in the down travel was not something I wanted to deal with. The new bump stop is made of polyurethane about 2.0 inches in diameter and 2.0 inches tall.

Do you have any pics or other background on this? I carry an emergency line/splice kit but my biggest concern with 33's is the bump stop situation.
 

JAK

JAK:JeremySnow
Do you have any pics or other background on this? I carry an emergency line/splice kit but my biggest concern with 33's is the bump stop situation.

The bump stop is a polyurethane hard foam snubber mounted on the inside of the shock. I simply removed it and replaced it with hard polyurethane tube of the size I wanted. This limits the travel of the shock/airspring.
 

dsm02c

Adventurer
I did this modification this weekend to my LR4, initially I placed two lines in the incorrect place on the rear valve block and got a suspension fault. A quick search in TOPIX and I was back running again. Here is the illustration showing proper routing of air lines for anyone that is going to do this in the future...

Front%20Rear%20Valve%20Blocks.png
 

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