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Greetings! I recently purchased a '91 Warrior and am coming to realize by comparison with other Toyota RVs I see (dolphin, sunrader, etc) that the rear end is very low to the ground. I've scraped it a few times on driveways and gas stations. Looking to raise the rear end. It currently appears to have an air shock mounted. I pumped it up to 150psi (suggested range was 80-200), didn't lift up the rear end much. Any ideas if I can get a lift kit or something to increase rear clearance?

Edited by spokeandwords

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Better double check your information source. I've never seen air springs rated over 100psi. Minimum pressure is 5 to 20psi

It could be that your air springs, lines or valves are leaking. Depending of what make you have fitted, you should be getting 2000 to 5000lb of lift when fully inflated.

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Thanks for the reply Derek! Not sure but definitely says not to exceed 200psi in a small sticker right at the schrader valve. would 2-5000lb of lift actually lift up the rear end a significant amount? I wonder if some other part of the rear suspension is worn out, like the leaf springs. Either way, hoping I can get a little more clearance...

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We need pics of what's there. Sounds like you have air shocks not air suspension which is what is needed on these rigs. No, if they are air shocks even at 200 psi it won't lift the rear end. No air suspension has a limit that high. Air bags look like this and are mounted above the leaf springs

Image result for air suspension firestone

or this

Image result for air suspension firestone

Linda S

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You're going to have a hard time even finding air @ 200psi. Sometimes it's even hard to find 100psi since gas stations set the pressure lower to avoid liability against people who might try to pump their car tires (35psi Max) to something way higher.

If you have the larger diameter (5000lb) air springs (Linda's top photo), adding air will make the rear end rise easily and quickly before your eyes by several inches. I've zero experience with the smaller diameter (2000lb) air springs (Linda's bottom photo) or air shocks (1100lb).

http://www.monroe.com/en-US/products/Max-Air/shock-Absorbers

P.S. Installing 5000lb air springs does NOT mean you can safely carry an extra 5000lb of 'stuff'. It just means you can get 5000lbs of lift to make it look level again.

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Once upon a time they had onboard vacuum powered compressors for air bags/shocks but I haven't seen them in years. You can buy 12 volt ones but unless you spend the big bucks they are pretty slow. 

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Air shocks put a LOT of strain on the shock mounting bolts. Air bags exert their force on the axle and frame which are much stronger

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I have the springs shown in Linda's lower picture.  I bought them from 3-T.  I could not find the 5000 lb units shown in the upper photo.  I run about 80 psi and the air suspension does a great job of raising the rear of the RV.  Before installing the air suspension, I bottomed out on just about every bump and the ride reminded me of riding on a hay wagon.  I love my air suspension.  if this set ever wears out, I will be installing the 5000 lb units.

Edited by Bob C

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check your bushing on your rear leaf springs- check for arch in your springs.  I replaced mine and had them modified to add an extra leaf.  With my 3T's airbags at 20, versus 60 makes about 1/2 - 1" difference of height  at rear tires.

Need to know what type of air bags you have.   I think 3t's was standard (I had 1 92 before I have a 93)

 

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