ContiTech AS9978 Air Spring – Hendrickson S-28929 Trailer Suspension Elemax and WIX 33336 on White

and WIX 33336 on White

WorkStar (MaxxForce DT)

and ContiTech AS8709 on Hendrickson Intraax and Vantraax 23K trailer suspensions

Hub oil sight glass reading low between PMs

ContiTech AS9978 Air Spring – Hendrickson S-28929 Trailer Suspension Elemax and WIX 33336 on WhiteThe ContiTech AS9978 (catalog 67588) is a rolling lobe trailer axle air spring for Hendrickson air ride trailer suspensions. 1T15M 4 bellows, 18. 00 in extended height with a 9. 00 in top plate (2 hole, 5. 50 in center to center) and a 10. 16 in composite piston. Direct replacement for Hendrickson S 28929 C 28929, Firestone W01 358 9978, Goodyear 1R12 668, and Mack 8446 S28929. Signs You Need a New Air Spring Trailer sagging or sitting unevenly when