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MN-833

LoadLifter 5000 Ultimate

TUNING THE AIR PRESSURE

Pressure determination comes down to three things — level vehicle, ride comfort and 
stability .

1 .  Level vehicle
  If the vehicle’s headlights are shining into the trees or the vehicle is leaning to one 

side, then it is not level (Fig . 15) . Raise the air pressure to correct either of these 
problems and level the vehicle .

2 .  Ride comfort
  If the vehicle has a rough or harsh ride it may be due to either too much pressure or 

not enough (Fig . 16) . Try different pressures to determine the best ride comfort . 

3 . Stability
  Stability translates into safety and should be the priority, meaning the driver may 

need to sacrifice a perfectly level and comfortable ride . Stability issues include roll 
control, bounce, dive during braking and sponginess (Fig . 17) . Tuning out these 
problems usually requires an increase in pressure .

GUIDELINES FOR ADDING AIR

1 .  Start with the vehicle level or slightly above .
2 .  When in doubt, always add air .
3 .  If the front of the vehicle dives while braking, increase the pressure in the front air bags, 

if equipped .

4 .  If it is ever suspected that the air bags have bottomed out, increase the pressure (Fig . 18) .
5 .  Adjust the pressure up and down to find the best ride .
6 .  If the vehicle rocks and rolls, adjust the air pressure to reduce movement .
7 .  It may be necessary to maintain different pressures on each side of the vehicle . 

Loads such as water, fuel, and appliances will cause the vehicle to be heavier on one 
side (Fig . 19) . As much as a 50 PSI difference is not uncommon .

Bad headlight aim

Sway and 

body roll

Rough ride

fig. 15

fig. 17

fig. 16

Bottoming out

Unlevel

Level

fig. 18

fig. 19

Содержание 88291

Страница 1: ...ructions completely before proceeding with installation Failure to read these instructions can result in an incorrect installation MN 833 031403 ECR 7916 INSTALLATION GUIDE ADJUSTABLE AIR HELPER SPRIN...

Страница 2: ......

Страница 3: ...taching the Upper Bracket 7 Securing the Air Spring to the Brackets 7 Installing the Air Lines 8 Tips for Installing Air Lines 9 Securing the Emergency Brake Cable 9 Before Operating 10 Checking for L...

Страница 4: ...2 MN 833 LoadLifter 5000 Ultimate Installation Diagram fig 1...

Страница 5: ...Spacer bar 4 S 10594 3 8 16 x 2 U bolt 4 T 18435 3 8 Nylon lock nut 10 U 17159 3 8 Washer head bolt 2 V 18447 5 16 x 3 8 Large washer 2 W 10465 Line clamp 1 Missing or damaged parts Call Air Lift cus...

Страница 6: ...stallation of this kit does not alter the gross vehicle weight rating GVWR or payload of the vehicle Check your vehicle s owner s manual and do not exceed the maximum load listed for your vehicle Gros...

Страница 7: ...he bottom of the center flange on the side plate and front cross member Fig 4 Also grind a slight chamfer on the back of the front mounting leg of the upper brackets to clear the bend radius of the la...

Страница 8: ...l plates Fig 6 2 Install a 90 swivel air fitting finger tight plus 1 1 2 turns Fig 6 Do not overtighten 3 The upper brackets are side specific The small mounting hole in the upper bracket faces forwar...

Страница 9: ...to 16 lb ft ATTACHING THE UPPER BRACKET 1 For B W hitch applications a Align the two large holes with the existing B W hitch frame brackets Use the existing 3 4 hardware supplied by B W to attach the...

Страница 10: ...r installation approximately 1 2 to easily apply a pressure gauge or an air chuck Fig 12 5 Push the inflation valve through the hole and use the rubber washer flat washer and another 5 16 nut to secur...

Страница 11: ...essure on fitting The hose should be straight beyond the fitting for 1 before bending Inspect hose for scratches that run lengthwise on hose prior to installation Contact Air Lift customer service at...

Страница 12: ...cut is clean and square see Fig 13 Reinsert the air line into the push to connect fitting b Check the threaded connection by tightening the swivel fitting another half turn If it still leaks deflate...

Страница 13: ...er should review the operating instructions with the owner Be sure to provide the owner with all of the paperwork that came with the kit Overnight leak down test Recheck air pressure after the vehicle...

Страница 14: ...ary depending on the state of the original suspension Operating the vehicle below the minimum air spring pressure will void the Air Lift warranty 5 When increasing load always adjust air pressure to m...

Страница 15: ...ues include roll control bounce dive during braking and sponginess Fig 17 Tuning out these problems usually requires an increase in pressure GUIDELINES FOR ADDING AIR 1 Start with the vehicle level or...

Страница 16: ...icle Exceeding the GVWR is dangerous and voids the Air Lift warranty Q Is it necessary to keep air in the air springs at all times and how much pressure will they need For LoadLifter 5000 Ultimate the...

Страница 17: ...15 MN 833 LoadLifter 5000 Ultimate Notes...

Страница 18: ...16 MN 833 LoadLifter 5000 Ultimate Notes...

Страница 19: ...etailer If there is a problem with the price Contact Information Mailing address P O Box 80167 Lansing MI 48908 0167 Shipping address 2727 Snow Road for returns Lansing MI 48917 Phone Toll free 800 24...

Страница 20: ...purchasing Air Lift products the professional installer s choice Printed in the USA JJC 0517 Need Help Contact Air Lift Company customer service department by calling 800 248 0892 For calls from outsi...

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