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574-537-8900    

 

Rev: 10.08.19

Air Ride

 Pin Box

Installation and Owner’s Manual

(For Aftermarket Applications)

CCD-0001741

9. 

Torque pin box bolts and nuts accordingly:

• Torque 

1/2

” bolts to 110 ft-lbs minimum.

• Torque 

5/8

” bolts to 160 ft-lbs minimum.

• Torque 

3/4

” bolts to 210 ft-lbs minimum.

10. 

Make sure that the 5th wheel coupler located in 

the  tow vehicle is mounted according to the proper 

instructions of the 5th Wheel manufacturer. In addition, 

make sure that it is in good working condition. A non- or 

poor-working coupler will affect pin box performance, 

resulting in an unsafe towing condition. Make sure the 5th 

Wheel connection is never located behind the center of the     

drive axle.

11. 

After all nuts and bolts have been tightened, attach 

trailer to tow vehicle. Before applying the air nozzle fitting 

at the top of the pin box, make sure the alignment pin is in 

the hole on the bottom of the air spring.

12. 

With the tow vehicle at rest, inflate the air bag with 

enough air to raise the pin box to the ride height mark 

on the front of the shock absorber 

(Fig.3A)

. The starting 

pressure should be around 80-90 psi, with the pressure 

increased according to the ride height mark. However, the 

Fig.3 

 B

 A

THE AIR BAG CAN LOSE AIR OVER TIME, RESULTING IN 
REDUCED OR LOSS OF PRODUCT PERFORMANCE. REDUCED 
OR LOSS OF PRODUCT PERFORMANCE CAN CAUSE 
PRODUCT AND/OR PROPERTY DAMAGE. ALWAYS VERIFY 
CORRECT LEVEL AGAINST THE SHOCK’S HEIGHT MARK AND 
TRAILER BEFORE TRAVELING. ADJUST AIR PRESSURE AS 
NECESSARY TO ACHIEVE CORRECT PIN BOX LEVEL.

AN OVERINFLATED AIR BAG CAN BURST, RESULTING IN 
DEATH, SERIOUS PERSONAL INJURY, SEVERE PRODUCT 
AND/OR PROPERTY DAMAGE. DO NOT OVERINFLATE AIR 
BAG. INFLATE AIR BAG TO RIDE HEIGHT LEVEL IDENTIFIED 
ON THE SHOCK ABSORBER.

AN UNSECURED AIR SPRING DURING INFLATION CAN CAUSE 
PERSONAL INJURY. MAKE SURE AIR SPRING IS PROPERLY 
SECURED TO THE PIN BOX BEFORE INFLATING. INSTALL AIR 
CAP TO SAFELY COMPLETE AIR SPRING INFLATION.

pressure is not to exceed 120 psi. Filling should be stopped 

when reaching either the ride height mark or 120 psi, 

whichever comes first. The minimum pressure is 45 psi.

13. 

Check the air pressure level on the air bag before each 

use and adjust accordingly. 

Operation

Pull Test

1. 

Make sure the trailer wheels are blocked, the trailer 

landing gear is resting on firm ground to support the   

trailer and the tow vehicle is in park with the emergency 

brake engaged.

2. 

Return to the cab of the tow vehicle, release the 

emergency brake and then apply the trailer brakes.

Summary of Contents for Air Ride 155925

Page 1: ...d 2 Installation 3 Operation 4 Pull Test 4 Troubleshooting 5 Maintenance 6 Notes 6 Air RideTM Pin Box Installation and Owner s Manual For Aftermarket Applications Air Ride Pin Box Kits Air Ride Pin Box Kits Part Part Description Description 155925 21K L03 Air Ride Pin Box 158778 21K L05 Air Ride Pin Box 158777 21K L07 Air Ride Pin Box 179879 18K M15 Air Ride Pin Box 155943 21K M19 Air Ride Pin Box...

Page 2: ...lci1 com or by using the myLCI app The myLCI app is available for free on iTunes for iPhone and iPad and also on Google Play for Android users iTunes iPhone and iPad are registered trademarks of Apple Inc Google Play and Android are trademarks of Google Inc Safety Read and fully understand all instructions before installing or operating this product Adhere to all safety labels Parts List Resources...

Page 3: ...n installing the new pin box measure from the ground up to the flat plate of the upper jaw of the pin box Once the new pin box is aligned that measurement should be equal to the measurement taken in step 2 plus 11 3 4 Record this dimension as B Fig 2 8 Reinstall previously removed fasteners step 4 NOTE Use the same amount of fasteners as were previously used If any nuts bolts or washers are damage...

Page 4: ...ording to the ride height mark However the Fig 3 B A THE AIR BAG CAN LOSE AIR OVER TIME RESULTING IN REDUCED OR LOSS OF PRODUCT PERFORMANCE REDUCED OR LOSS OF PRODUCT PERFORMANCE CAN CAUSE PRODUCT AND OR PROPERTY DAMAGE ALWAYS VERIFY CORRECT LEVEL AGAINST THE SHOCK S HEIGHT MARK AND TRAILER BEFORE TRAVELING ADJUST AIR PRESSURE AS NECESSARY TO ACHIEVE CORRECT PIN BOX LEVEL AN OVERINFLATED AIR BAG C...

Page 5: ...cturer can provide guidelines for this check Troubleshooting FAILURE TO PERFORM A PULL TEST MAY RESULT IN SEVERE PROPERTY DAMAGE SERIOUS PERSONAL INJURY OR DEATH FAILURE TO SECURE TOW VEHICLE AND TRAILER FROM MOVEMENT DURING PROCEDURE COULD RESULT IN SEVERE PROPERTY DAMAGE SERIOUS PERSONAL INJURY OR DEATH MAKE SURE TOW VEHICLE AND TRAILER ARE PROPERLY SECURED AGAINST MOVEMENT DURING THE PROCEDURE ...

Page 6: ...odically check the recess on the top of the pin box Fig 3B for standing water Drain water and remove debris as needed The area should be clean and clear of all contaminants The pin box air bag can lose air over time Always check pin box and that trailer is level before traveling Adjust air bag air pressure as necessary to achieve proper ride height ...

Page 7: ...7 lci1 com 574 537 8900 Rev 10 08 19 Air Ride Pin Box Installation and Owner s Manual For Aftermarket Applications CCD 0001741 Notes ...

Page 8: ...y unless Lippert Components provides explicit consent to distribute individual parts All manual information is subject to change without notice Revised editions will be available for free download at lci1 com Manual information is considered factual until made obsolete by a revised version Please recycle all obsolete materials and contact Lippert Components with concerns or questions Notes ...

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