PRIMARY FIXED SUSPENSION SYSTEM
INTRAAX ® Suspension Components
ZMD ® ZERO MAINTENANCE DAMPING ® COMPONENTS – AAT 23K and AAT 25K only (Not Shown)
PER AXLE
ITEM DESCRIPTION
PART NO.
NOTE
25 ZMD ® AIR SPRING
14"- 19" ride heights only; standard and limited rebound 9 travel
AAT 23K
Plastic piston
S-39400
2
AAT 25K
Plastic piston
S-39401
2
26 ZMD DOWNSTOP 14" ride height
S-33669
2
Standard and limited rebound 9 travel
16" ride height Standard travel
S-33669-3
2 2 2 2
Limited rebound 9
S-33669
15" and 17" - 19" ride heights
S-33669-3 S-24049/2
Standard travel
27 ZMD DOWNSTOP BOLT KIT
Includes shear bolts, spacers, washers, hex bolt and hex nut Includes 2 ZMD air springs, 2 down stop assemblies and hardware
28 ZMD RETROFIT KIT
AAT 23K
14" ride height 15" ride height 16" ride height Standard travel
S-39350-2 S-39350-4
1 1
S-39350-9 S-39350-10 S-39350-4
1 1 1
Limited rebound
17" ride height
AAT 25K
14" ride height 15" ride height 16" ride height Standard travel
S-39350-11 S-39350-12
1 1
S-39350-13 S-39350-17 S-39350-12
1 1 1
Limited rebound
17" - 19" ride heights
9. Only available on 14" and 16" ride heights with raised center axle.
62
Trailer Commercial Vehicle Systems
Refer to Hendrickson Literature No. L405 - INTRAAX AAT Parts List
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