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10

MN-651

LoadLifter 5000

Product Use, Maintenance and Servicing

5 PSI

100 PSI

FAILURE TO MAINTAIN CORRECT MINIMUM PRESSURE (OR PRESSURE 

PROPORTIONAL TO LOAD), BOTTOMING OUT, OVER-EXTENSION OR RUBBING 

AGAINST ANOTHER COMPONENT WILL VOID THE WARRANTY.

Maximum Air Pressure

Minimum Air Pressure

  Overnight leak down test — Recheck air pressure after the vehicle has been used for 

24 hours. If the pressure has dropped more than 5 PSI, then there is a leak that must 

be fixed. Either fix the leak yourself or return to the installer for service.

 

Air pressure requirements — I understand the air pressure requirements of my air spring 

system. Regardless of load, the air pressure should always be adjusted to maintain ride 

height at all times.

  Thirty day or 500 mile test — I understand that I must recheck the air spring system after 

30 days or 500 miles, whichever comes first. If any part shows signs of rubbing or abrasion, 

the source should be identified and moved, if possible. If it is not possible to relocate 

the cause of the abrasion, the air spring may need to be remounted. If professionally 

installed, the installer should be consulted. Check all fasteners for tightness.

POST-INSTALLATION CHECKLIST

 

Clearance test — Inflate the air springs to 60 PSI and ensure there is at least ½” clearance 

around each bellow, away from anything that might rub against them. Be sure to check 

the tire, brake drum, frame, shock absorbers and brake cables. 

 

Leak test before road test — Inflate the air springs to 60 PSI, check all connections for 

leaks with a soapy water solution. See page 9 for tips on how to spot leaks. All leaks 

must be eliminated before the vehicle is road tested.

 

Heat test — Be sure there is sufficient clearance from any heat sources — at least 6” 

for air springs and air lines. If a heat shield was included in the kit, install it. If there is no 

heat shield, but one is required, call (800) 248-0892.

 

Fastener test — Recheck all bolts for proper torque. Axle straps carriage bolt lock nuts 

should be torqued to 16 ft/lbs. Re-torque after 100 miles.

 

Road test — The vehicle should be road tested after the preceding tests. Inflate the air 

springs to 25 PSI (50 PSI if the vehicle is loaded). Drive the vehicle 10 miles and recheck 

for clearance, loose fasteners and air leaks.

 

Operating instructions — If professionally installed, the installer should review the Product 

Use, Maintenance and Servicing section on page 10 with the owner. Be sure to provide 

the owner with all of the paperwork which came with the kit. 

Technician’s Signature ________________________
Date ______________

Before Operating

INSTALLATION CHECKLIST 

(To be completed by installer)

Summary of Contents for 57212

Page 1: ...pletely before proceeding with installation Failure to read these instructions can result in an incorrect installation MN 651 041210 ECR 7436 INSTALLATION GUIDE Kit Nos 57212 57411 Cover illustration...

Page 2: ......

Page 3: ...ets 6 Securing the Air Spring to Brackets 7 Securing the Emergency Brake Cable 7 Installing the Air Lines 8 Attaching the Jounce Bumper 9 Checking for Leaks 9 Fixing Leaks 9 Before Operating 10 Instal...

Page 4: ...t 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 Gross Vehicle Weight Rati...

Page 5: ...O 01525 Spacer bar 4 Item Part Description Qty P 17202 3 8 16 x 1 25 Hex head cap screw 2 Q 18468 3 8 Flat washer 8 R 18435 3 8 Nyloc washer 4 S 18207 1 2 Large flat washer 8 T 18460 1 2 Nyloc nut 4 U...

Page 6: ...nce bumpers from under the frame above the axle Save for later use Installing the LoadLifter 5000 System DANGER ASSEMBLING THE AIR SPRING UNIT 1 Set a roll plate D on both ends of the air spring A The...

Page 7: ...ou are installing this kit on a 2008 or later model it will be necessary to drill the 3 8 locating hole for locating the upper bracket to the frame rail Use the template provided at the end of this ma...

Page 8: ...template BEFORE DRILLING CHECK THE BACK SIDE OF THE FRAME FOR CLEARANCE ISSUES WITH THE BRAKE LINES GAS LINES AND ELECTRICAL LINES ANY OBSTACLES WILL NEED TO BE TEMPORARILY RELOCATED TO CLEAR THE ARE...

Page 9: ...thickness of the leaf spring stack it will be necessary to trim the U bolts fig 10 3 Check to ensure that all hardware is secure and repeat the process for the remaining side of the vehicle SECURING T...

Page 10: ...WILL ENSURE AGAINST LEAKS DO NOT USE WIRE CUTTERS OR SCISSORS TO CUT THE AIR LINE THESE TOOLS MAY FLATTEN OR CRIMP THE AIR LINE CAUSING IT TO LEAK AROUND THE O RING SEAL INSIDE THE ELBOW FITTING FIG 1...

Page 11: ...the swivel fitting a Check the air line connection by deflating the spring and removing the line by pulling the collar against the fitting and pulling firmly on the air line Trim 1 off the end of the...

Page 12: ...late the air springs to 60 PSI and ensure there is at least clearance around each bellow away from anything that might rub against them Be sure to check the tire brake drum frame shock absorbers and b...

Page 13: ...he suspension brake components Use of on board leveling systems do not require deflation or disconnection Stability translates into safety and should be the priority meaning the driver may need to sac...

Page 14: ...a hoist for service work damage the air springs No The vehicle can be lifted on a hoist for short term service work such as tire rotation or oil changes However if the vehicle will be on the hoist fo...

Page 15: ...with all products The consumer will be responsible for removing labor charges the defective product from the vehicle and returning it transportation costs prepaid to the dealer from which it was purc...

Page 16: ...t was purchased If it is necessary to return or exchange the kit for any reason If there is a problem with shipping if shipped from the retailer If there is a problem with the price Contact Informatio...

Page 17: ...ot 2 Align slot from template with the slot on the frame that is located above the axle 3 Center punch and drill a 3 8 hole that will be used to locate the upper bracket to the frame 4 Repeat for oppo...

Page 18: ...16 MN 651 LoadLifter 5000 Notes...

Page 19: ...17 MN 651 LoadLifter 5000 Notes...

Page 20: ...com Thank you for purchasing Air Lift products the professional installer s choice Printed in the USA Need Help Contact our customer service department by calling 800 248 0892 Monday through Friday 8...

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