NHTSA ID Number: 10162810
Manufacturer Communication Number: L977 Rev H
TSB/Document Date: 2019-07-15
Summary
Operation Name: Hendrickson
Trailer Commercial Vehicle Systems Document Name: Identification Guide - Trailer Suspension and Axle Systems Summary: This document provides guidelines on locating and identifying model, serial number and other information for particular Hendrickson trailer suspension and axle systems.
Brake
Size
Slack / Hub / Drums
(if equipped)
Model: INTRAAX.82164
DESCRIPTION: AAT23K 14RHC L755PST X7 SH
Duty Cycle
Beam
Profile
Suspension
Capacity
Ride
Height
Axle
Style
Axle
Track
Axle
Diameter
Axle
Wall
Spindle
Slack / Hub / Drums
Brake
Size
(if equipped)
INTRAAX® DESCRIPTION MATRIX
Duty Cycle
AA - Standard
AAED - Extreme Duty
Pivot Connection
N - Narrow
(Blank) - Wide
Beam Profile
T - Top-Mount
L - Low-Ride
LS - Low-Ride Short
Suspension Capacity
20K - 20,000 lbs.
23K - 23,000 lbs.
25K - 25,000 lbs.
30K - 30,000 lbs.
Axle Style
C - Cambered
RC - Raised Center
(Blank) - Standard
Axle Diameter
S - 5.00"
L - LDA™ (5.75")
F - Five Inch AAT / AAL Axle
Axle Wall
ST - Standard
HD - Heavy Duty
Brake Size
X5 - 15" × 85/8"
7 - 16.5" × 7"
X7 - 16.5" × 7" HXS®
X8 - 16.5" × 85/8" HXS
415MM - 415 mm MAXX22T™ ADB
430MM - 430 mm ADB
Axle Track
70 - 70.5"
71 - 71.5"
73 - 73.0"
75 - 75.0"
755 - 75.5"
76 - 76.5"
77 - 77.5"
795 - 79.5"
83 - 83.5"
85 - 85.0"
Slack Adjuster
S - Any Brand Selection
(Blank) - None
Hub Brand
H - Any Brand Selection
(Blank) - None
Spindle
N - HN
P - HP
CDHP - CD HP
US - HUS
Drum Brand
D - Any Brand Selection
(Blank) - None
4
L977 Rev H
IDENTIFICATION GUIDE — TRAILER SUSPENSION AND AXLE SYSTEMS
INTRAAX®-SP
Model: INTRAAXSP.3187
DESCRIPTION: AAZNT 46K 14RH L49 38PST X7SHD
Box Type
Suspension
Capacity
Pivot
Connection
Beam Profile
Ride
Height
Axle
Diameter
Brake
Size
Slack / Hub
Axle
/ Drums
Wall
Spindle
Axle
Center
I-Beam
Center
(if equipped)
Model: INTRAAXSP.2503
DESCRIPTION: AAZNT 69K23 14RH L60 43NST X7
Box Type
Ride
Height
Suspension
Capacity
Pivot
Connection
Axle
Center
Axle
Diameter
Beam Profile
Spindle
I-Beam
Center
Brake
Size
Axle
Wall
INTRAAX®-SP DESCRIPTION MATRIX
Box Type
AAZ - Platform Slider Box
Pivot Connection
N - Narrow
(Blank) - Wide
Beam Profile
T - Top-Mount
L - Low-Ride
Suspension Capacity
23K - 23,000 lbs.
46K - 46,000 lbs.
69K23 - 69,000/23,000 lbs.
Axle Centers
(Blank) - N/A (Single Axle)
49 - 49.0"
60 - 60.0"
72 - 72.0"
L977 Rev H
Axle Diameter
(Blank) - 5.00"
L - LDA™ (5.75")
Brake Size
7 - 16.5" × 7"
X7 - 16.5" × 7" HXS®
X8 - 16.5" × 85/8" HXS
415MM - 415 mm MAXX22T™ ADB
430MM - 430 mm ADB
I-Beam Centers
37 - 37.0"
38 - 38.0"
43 - 43.0"
44 - 44.0"
Slack Adjuster
S - Any Brand Selection
(Blank) - None
Spindle
N - HN
P - HP
WP - CD HP
US - HUS
Hub Brand
H - Any Brand Selection
(Blank) - None
Drum Brand
D - Any Brand Selection
(Blank) - None
Axle Wall
ST - Standard
HD - Heavy Duty
5
IDENTIFICATION GUIDE — TRAILER SUSPENSION AND AXLE SYSTEMS
VANTRAAX®
Model: VANTRAAX.12059
DESCRIPTION: HKANT40K 9 16RHL77NST MA7
Slider Box Type
Axle
Spread
Pivot Connection
Beam Profile
System
Capacity
Axle
Axle
Track
Wall Slider Pin
Extractor
Axle
Diameter
Brake Size
Spindle
Ride
Height
Model: VANTRAAX.27506
DESCRIPTION: HKARL 46K 9 12RHL77PST QD7SHD
Slider Box Type
Beam Profile
Ride
Height
System
Capacity
Axle
Spread
Axle
Track
Axle
Diameter
Axle
Wall
Spindle
Slider Slack / Hub /
Drums
Pin
Extractor (if equipped)
Brake Size
ULTRAA-K ®
Model: ULTRAAK.1010
DESCRIPTION: UTKNT40K 9 16RHL 77PST QD7
Slider Box
Type
Pivot
Connection
Beam Profile
Axle
Spread
Ride
Height Axle
Diameter
System
Capacity
6
Slider Pin
Axle Extractor
Wall
Brake Size
Spindle
Axle
Track
L977 Rev H
IDENTIFICATION GUIDE — TRAILER SUSPENSION AND AXLE SYSTEMS
VANTRAAX® / ULTRAA-K® DESCRIPTION MATRIX
Box Type
HKA - 8" K-2®
HKAR - 14" Ramp-Ready
HRR - 8" K-2 for Railroad
UTK - ULTRAA-K Box
Pivot Connection
N - Narrow
(Blank) - Wide
Beam Profile
T - Top-Mount
L - Low-Ride
System Capacity
23K - 23,000 lbs.
40K - 40,000 lbs.
46K - 46,000 lbs.
50K - 50,000 lbs.
69K23 - 69,000/23,000 lbs.
69K25 - 69,000/25,000 lbs.
Box Duty
ST or (Blank) - Standard
HD or H - Heavy Duty
L977 Rev H
Axle Centers
(Blank) - N/A (Single Axle)
9 - 49.0"
0 - 60.0"
2 - 72.0"
1 - 121.0"
Axle Diameter
S - 5.00"
L - LDA™ (5.75")
Slider Box Width
71 - 42.0"
77 - 48.0"
83 - 54.0"
Slider Pin Extractor
MA - Manual
QD - QUIK-DRAW® or QUIK-DRAW No Valve
FX - None (Pins only for fixed applications)
Brake Size
7 - 16.5" × 7"
X7 - 16.5" × 7" HXS®
X8 - 16.5" × 85/8" HXS
415MM - 415 mm MAXX22T™ ADB
430MM - 430 mm ADB
Slack Adjuster
S - Any Brand Selection
(Blank) - None
Spindle
N - HN
P - HP
WP - CD HP
US - HUS
Hub Brand
H - Any Brand Selection
(Blank) - None
Drum Brand
D - Any Brand Selection
(Blank) - None
Axle Wall
ST - Standard
HD - Heavy Duty
7
IDENTIFICATION GUIDE — TRAILER SUSPENSION AND AXLE SYSTEMS
HT™ SERIES HT250US
Model: HT250US.1
DESCRIPTION: 6.5 ST WO AS1 SH1 SM SA PK SB
Ride Height
Frame
Attachment
Air Spring
Travel
Mounting
Assembled
Shock
Mounting
Paint / Color
Packaging
HT SERIES HT250US DESCRIPTION MATRIX
Travel
ST - Standard
LJ - Limited Jounce
ER - Extended Rebound
Frame Attachment
BO - Bolt-on (1/2-inch)
BO5 - Bolt-on (5/8-inch)
FC - Frame Clearance
HDG - Hot Dip Galvanize Kit (HDG)
SFK - Slider Frame Bracket Kit (SFK)
T1 - 6 Degrees Rotated
T2 - 12.9 Degrees Rotated
WO - Weld-on
Air Spring Mounting
ASNS - Air Spring Plate, No Spacer, Std.
AS1 - Standard Air Spring
AS2 - Rotated Air Spring
AS3 - High PSI Air Spring Standard
AS4 - High PSI Air Spring Rotated
AS5 - High PSI Air Spring Short Bellows
NMR - No Mounting Plate, Rotated
NMS - No Mounting Plate, Standard
Shock
SH1 - Standard
SH2 - Extended Service / High Damping
8
Shock Mounting
RM - Remote
SM - Standard Mount
Assembled
SA - Assembled
U1 - Unassembled
Packaging
PK - Standard NAFTA
X1 - Standard - Export
Beam Coating
SB - Standard Black Primer
UP - Unpainted
FBP - Full Black Primer
L977 Rev H
IDENTIFICATION GUIDE — TRAILER SUSPENSION AND AXLE SYSTEMS
HT™ SERIES HT300US/HT300YB
Model: HT300US.1
DESCRIPTION: 5.5RH BO A 5 ST S
Assembly
Ride Height
Frame
Attachment
Travel
Axle
Shock
Diameter
Mount
Model: HT300YB.6
DESCRIPTION: 9RH WO N 5 ST S
Ride Height
Assembly
Frame
Attachment
Travel
Axle
Diameter
Shock
Mount
HT SERIES HT300US /HT300YB DESCRIPTION MATRIX
Frame Attachment
BO - Bolt-on
WO - Weld-on
Assembly
A - Assembled
N - Nonassembled
U1 - Unassembled
S1 - Separate Frame Kit
L977 Rev H
Axle Diameter
5 - 5.00"
Shock Mount
R - Remote
S - Standard Mount
Travel
ST - Standard
LJ - Limited Jounce
ER - Extended Rebound
9
IDENTIFICATION GUIDE — TRAILER SUSPENSION AND AXLE SYSTEMS
HT™ SERIES
MODEL: HT250TB15-001
Capacity
Suspension
Type
Ride Height
Beam
Profile
Top-Mount
Model Suffixes
Pivot
Connection
MODEL: HT250U-9Y-001
Underslung
Model Suffixes
Capacity
Suspension
Type
Beam
Pivot
Profile
Connection
Ride
Height
MODEL: HT250 YS-9-001
Capacity
Suspension
Type
Ride Height
Beam
Profile
Y-Beam
Model Suffixes
Pivot
Connection
10
L977 Rev H
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TSB/Document ID: L977 Rev H
Replacement Service Bulletin Number:
MFR Communication Date: 2019-03-01
MFR Internal Campaign ID/Software Version:
Communication Type: Service Bulletin/Repair Instructions
NHTSA Components: ELECTRONIC STABILITY CONTROL:AUTOMATIC (ASC)
MFR Component System:
MFR Component Subsystem:
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