Hellwig Air 6290 User Manual

INSTALLATION INSTRUCTIONS6090Air Suspension Kit (pat. pending)1999-2006 Tahoe, Suburban,Avalanche, YukonThank you for purchasing a quality Hellwig Pro

559-734-7451 800-367-5480 FAX 559-734-746013. Prepare leveling valve for installation. The inlet and exhaust ports have ascreen across the base of the

559-734-7451 800-367-5480 FAX 559-734-746014. Attach leveling valve bracket to valve as shown using 1/4” nylon locknutsand washers. Tighten to 7 ft-lb

16. Assemble linkage as shown in photos and clamp leveling valve bracket toframe crossmember in location shown so that linkage geometry matches photo.

6090( R-6090) 03/09/0717. IMPORTANT– BEFORE DRILLING ANY MOUNTING HOLES IN CROSS-MEMBER, remove jack stands and lower frame so that the weight of the

18. Reconnect shock absorbers to axle brackets and torque bolts to 60-70 ft-lb. IMPORTANT— Raisevehicle frame until the wheels come off the ground and

559-734-7451 800-367-5480 FAX 559-734-74606090 ( R-6090) 03/09/0719. When satisfied with position of leveling valve and linkage has been checkedfor pr

559-734-7451 800-367-5480 FAX 559-734-74606090 ( R-6090) 03/09/07Part C Compressor Installation20. Prepare the compressor for mounting by HAND-TIGHTEN

559-734-7451 800-367-5480 FAX 559-734-74606090 ( R-6090) 03/09/0722. Prepare air tank as shown. Apply pipe sealant or Teflon tape to all fittings.Atta

559-734-7451 800-367-5480 FAX 559-734-746024. Connect elbow fitting on relay bulkhead to 1/4” fitting on tank using 1/4” nylon tubing asshown. Make su

559-734-7451 800-367-5480 FAX 559-734-7460Plumbing and Wiring Diagram6090 ( R-6090) 03/09/07

BEFORE STARTINGYOUR PROJECTWHEN LIFTING A VEHICLE WITH A JACK, BE SURE TO SET THE PARKING BRAKE AND USE SAFETY STANDS.ENSURE THAT THE INSTALLATION OF

559-734-7451 800-367-5480 FAX 559-734-7460Connect to inletof leveling valve.Tighten this partof fitting only toavoid damagingcheck valveBraided hosefr

559-734-7451 800-367-5480 FAX 559-734-746028. After all connections have been verified, install fuse in inline fuse holder, apply parkbrake and start

PartA Air Spring Installation6090 ( R-6090) 03/09/071. Prepare vehicle for installation by chocking front tires and setting emergencybrake. Before sta

3. Prepare driver side air springassembly by installing 1/2” MPTx 3/8 push to connect fitting intoair spring. Torque to 25-30 ft-lb.The driver side fr

6090 ( R-6090) 03/09/075. Attach axle bracket to air spring as shown. The reinforcement braces are to beinstalled over the coil seat on the axle. Note

7. To aid assembly of brackets to frame, lower frame of vehicle slightly so that the air springassembly holds itself in place between the axle and fra

8a. 1999– early 2006 models—Driver side panhard axle bracket has a large slotted hole toinsert bolt through as shown. Place 3/8-16x2-3/4” bolts throug

9. If vehicle has a single brake hose go to step 10. If the vehicle has two brake hoses asshown, remove factory bracket and install brake relocation b

559-734-7451 800-367-5480 FAX 559-734-746011. Reference the ride height from step (1) and subtract 1” from this measurement. Ad-just frame height to t