NHTSA ID Number: 10162713
Manufacturer Communication Number: 17730-313 Rev A
TSB/Document Date: 2019-07-15
Summary
Operation Name: Hendrickson
Truck Commercial Vehicle Systems Document Name: Technical Procedure - AIRTEK Front Air Suspension with STEERTEK NXT Axle for Hoist Liftruck T-Series Summary: This document provides preventive maintenance, service, repair and rebuild instructions for Hendrickson AIRTEK front suspension systems with STEERTEK NXT axles equipped on Hoist Liftruck T-Series vehicles.
28 26
21 20
40
39
35
42
43
45
43
49
32
33
43
46
37
38
34
44
54 53
50
51 52
42
41
Parts Lists
48
47
10
17730-313
AIRTEK® for Hoist Liftruck T-Series
KEY NO. PART NO.
DESCRIPTION
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
66865-002L
34013-310
VEHICLE
QTY.
Air Spring
Air Spring Fasteners Service Kit, One Side,
Includes Key Nos. 2-5
*¾" Upper Flat Washer
*¾"-16 UNF Upper Nylocknut
*½" Lower Hardened Washer
*½"-13 UNC Lower Nylocknut
59013-001
Height Control Valve Service Kit, One Side,
Includes Key Nos. 6-8
*Height Control Valve
*¼" Hardened Washer
*¼"-20 UNC Locknut
66825-002
HCV Linkage Assembly, One Side,
Includes Key Nos. 10-14
*Linkage Assembly
*5⁄16"-18 UNC Stud
*5⁄16"-18 UNC Locknut
*5⁄16" Hardened Washer
*5⁄16"-18 UNC Nut
58913-011L
Shock Absorber
67463-002
Shock Absorber Bracket
59946-006
Shock Absorber Spacer
50764-019
¾"-10 UNC x 4½" Bolt
58917-003
¾"-10 UNC x 5½" Bolt
22962-001
¾" Flat Washer
49842-000
¾"-10 UNC Locknut
53487-000
Leaf Spring Assembly with Bushings
58258-018
M20 x 2.5 x 180 mm Bolt
58246-004
M20 Washer
58259-000
M20 x 2.5 Locknut
64314-000
Shackle Plate
58258-008
M20 x 2.5 x 160 mm Bolt
58246-004
M20 Washer
58259-000
M20 x 2.5 Locknut
Top Pad
66814-001 Left Hand
66814-002 Right Hand
34013-297
Top Pad Fasteners Service Kit,
One Side, Includes Key Nos. 31-33
*¾"-16 UNF x 5" Bolt
*¾" Flat Washer
*¾"-16 UNF Nylocknut
80374-001
Axle Assembly, Includes Key Nos. 34-54
68986-002M STEERTEK NXT Axle & Kingpin Assembly
2
KEY NO. PART NO.
DESCRIPTION
VEHICLE
QTY.
Upper Steering Knuckle Assembly, Includes
Key Nos. 39-40, 42-43
35
60903-455 Left Hand
1
36
60904-402 Right Hand
1
Lower Steering Knuckle Assembly, Includes Key
Nos. 41-43, 53-54
37
58900-495 Left Hand
1
38
58900-496 Right Hand
1
Kingpin Bushing and Bearing Service Kits,
60961-628
Axle Set, Includes Kit Nos. 60961-629 & -630
60961-629
Left Hand with Composite Thrust Bearing
Includes Key Nos. 39-44, 46, Loctite
60961-630
Right Hand with Roller Thrust Bearing
Includes Key Nos. 39-43, 45-46, Loctite
39
33117-000
Grease Zerk
2
40
68687-003
Upper Grease Cap Assembly
2
41
68687-002
Lower Grease Cap Assembly
2
42
58909-001
Kingpin Bushing
4
Thrust Bearing Service Kits,
60961-631
Axle Set, Includes Kit Nos. 60961-632 & -633
60961-632
Left Hand Composite Thrust Bearing, Includes
Key Nos. 43-44, 46 & Loctite
60961-633
Right Foster Roller Thrust Bearing, Includes
Key Nos. 43, 45-46 & Loctite
43
68731-000
Kingpin Seal
4
44
59828-000
Left Hand Composite Thrust Bearing
1
45
64256-000
Right Hand Roller Thrust Bearing
1
5⁄8" Socket Head Cap Screw
46
60236-001
4
Not Shown 60937-000
Loctite® (Red) Compound Tube
1
47
76879-001
Tie Rod Assembly, Includes Key Nos. 48-50
1
Tie Rod End Service Kits,
60961-735
Axle Set, Includes Kits Nos. 60961-742 & -743
60961-742
Left Hand, Includes Key Nos. 48, 51-52
60961-743
Right Hand, Includes Key Nos. 49, 51-52
Tie Rod End, Includes Key No. 50
48
76876-001 Left Hand
1
49
76876-002 Right Hand
1
50
*7⁄8" Castle Nut
2
7⁄8" Flat Washer
51
22962-007
2
52
17800-004
Tie Rod Nut Cotter Pin
2
60961-069
Stop Bolt Service Kit, One Side,
Includes Key Nos. 53-54
53
*½"-13 UNC Square Head Bolt
2
54
*½"-13 UNC Hex Jam Nut
2
2
2
2
2
2
4
4
2
2
4
4
4
4
2
2
2
2
2
6
4
2
2
4
2
4
4
8
4
1
1
8
8
8
1
1
NOTE: * Item included in kit/assembly only, part not sold separately.
17730-313
11
Parts Lists
AIRTEK® for Hoist Liftruck T-Series
Drum Brake Assembly
KEY NO. PART NO.
DESCRIPTION
VEHICLE
QTY.
1
*Meritor Drum Brake Assembly, Ø 16.5" x 5"
Left Hand Part No. QP4-1655-1599
1
Right Hand Part No. QP4-1655-1600
1
2
80135-002
¾"-10 UNC x 2¾" Hex Bolt
14
3
22962-012
¾" Hardened Washer
22
4
49842-000
¾"-10 UNC Locknut
8
5
*Federal Mogul Wheel Seal
2
Kit No. M380001TX0
*Timken Inner Bearing One side, Set No. 413,
Includes Key Nos. 6-7
6
Inner Bearing Cone
2
7
Inner Bearing Cup
2
*Timken Outer Bearing One Side Set No. 406,
Includes Key Nos. 8-9
8
Outer Bearing Cup
2
9
Outer Bearing Cone
2
KEY NO. PART NO.
DESCRIPTION
10
11
12
13
14
15
16
17
18
19
64545-002
VEHICLE
QTY.
*Meritor 1½"-12 UNF Inner Wheel
2
Bearing Adj. Nut Part No. 1227-U-541
*Meritor 3⁄16" Wheel End Lock Ring
2
Part No. 1229-G-475
*Meritor 0.05" Wheel End Lock Washer
2
Part No. 1229-F-474
*Meritor Wheel End Outer Nut No. 1227-B-106 2
*Stemco Hubcap Gasket Part No. 330-3024
2
*Webb Hub Part No. 25201–3T
2
*Webb Drum Part No. 65163B
2
*Webb M22 x 1.5 Lug Nut Part No. 179935
20
*Stemco Hubcap Assembly - 6",
2
Kit No. 343-4346
5⁄16"-18 UNC x ¾" Hex Bolt with Retainer
12
Washer (Hubcap Bolts)
NOTES: * Not supplied by Hendrickson for aftermarket service purposes. Description and part number listed for reference only. For more
information and assistance with service, maintenance and rebuild instructions on these components see below component
manufacturers:
• Federal Mogul technical and parts support 800.325.8886 or online at www.fme-cat.com
• Meritor technical and parts support 888.725.9355 or online, parts (www.meritorpartsexpress.com), technical support
(www.meritorbullpen.com)
• Stemco technical and part support 800.527.8492 or go to www.stemco.com
• Timken at technical and part support 866.984.6536 or online at www.timken.com/resources or Timken YouTube series, Timken
Tricks of the Trade (Installing a Timken® Set-Right® Bearing)
• Webb technical and part support 800.633.3256 or online at www.webbwheel.com
Parts Lists
12
17730-313
AIRTEK® for Hoist Liftruck T-Series
SECTION 6
Towing Procedure
ON-HIGHWAY AND ON-ROADWAY
Hendrickson recommends that a vehicle equipped with a STEERTEK NXT axle be towed by the
following methods (listed in order of preference) for ON‑HIGHWAY or ON‑ROADWAY applications.
■■
METHOD 1 — Wheel lift, the ideal towing procedure
■■
METHOD 2 — Towing the vehicle from the rear
■■
METHOD 3 — Conventional axle fork
Please read, understand and comply with any additional towing instructions and safety precautions that may be provided by the vehicle manufacturer.
Hendrickson will not be responsible for any damage to the axle, suspension or other vehicle components resulting from any towing method or fixture not authorized by Hendrickson.
Please contact Hendrickson Tech Services toll-free at 1-866-755-5968 (U.S. and Canada) or send
e‑mail to: techservices@hendrickson-intl.com with any questions regarding proper towing procedures for vehicles equipped with a STEERTEK NXT axle.
METHOD 1 — WHEEL LIFT
This method provides the greatest ease for towing the vehicle. Lifting at the tires helps reduce the
risk of possible damage to the axle, suspension, and engine components during towing operations, see Figure 6-1.
FIGURE 6-1 Wheel lift method
METHOD 2 — TOWING VEHICLE FROM THE REAR
This method is preferred when the proper equipment is not available to perform the wheel lift
method and is necessary for wreckers not equipped with an under lift system.
17730-313
13
Towing Procedure
AIRTEK® for Hoist Liftruck T-Series
METHOD 3 — AXLE FORK LIFT
This is an alternative method for towing the vehicle, but requires standard tow forks, and designated lift points inside the STEERTEK NXT axle clamp group.
NOTE
When lifting a vehicle with an under lift boom, care must be taken not to damage the engine’s oil
pan. Vehicles equipped with a front fairing may require removal of the front fairing prior to towing
to prevent component damage.
■■
Ensure there is sufficient clearance between the oil pan and the boom
■■
Release the tractor brakes
■■
Install safety straps prior to towing the vehicle, it is preferred to use nylon safety straps.
Chains have a tendency to bind and may cause damage to the axle.
1. Use a tow fork with a minimum of 4.5" opening, 2" shank, see Figure 6-2.
2. Install the fork in the boom properly.
3. The proper tow fork location is centered between the locknuts on the axle wraps, see Figure 6-3.
FIGURE 6-2
FIGURE 6-3
OFF‑ROADWAY TOWING METHOD
WHEN A VEHICLE IS DISABLED AND EQUIPPED WITH A STEERTEK NXT AXLE, CARE MUST BE TAKEN TO
ENSURE THERE IS NO DAMAGE TO THE SUSPENSION OR AXLE WHEN TOWING THE VEHICLE. THE USE
OF TOW STRAPS ARE NECESSARY TO TOW A DISABLED VEHICLE FROM A REPAIR FACILITY PARKING LOT
INTO THE SHOP BAY. THE TOW STRAPS SHOULD BE CONNECTED TO THE TOW HOOKS PROVIDED BY THE
VEHICLE MANUFACTURER AT THE FRONT OF THE BUMPER. IF THE USE OF TOW HOOKS IS NOT AN OPTION,
THEN TOW STRAPS MAY BE WRAPPED AROUND THE FRONT STEERTEK NXT AXLE, (SEE FIGURE 6-4) IN A
MANNER THAT IS ACCEPTABLE FOR TOWING THE VEHICLE FROM A REPAIR FACILITY PARKING LOT INTO THE
SHOP BAY. DO NOT USE A TOW CHAIN AROUND THE FRONT STEERTEK NXT AXLE TO TOW THE VEHICLE,
DOING SO WILL DAMAGE THE AXLE AND VOID ANY APPLICABLE WARRANTY, SEE FIGURE 6-4.
■■
NYLON STRAPS OR CHAINS ARE NOT RECOMMENDED FOR ON-HIGHWAY OR ON-ROADWAY
TOWING.
FIGURE 6-4
Towing Procedure
14
17730-313
AIRTEK® for Hoist Liftruck T-Series
SECTION 7
Preventive Maintenance
Following appropriate inspection procedures is important to help ensure the proper maintenance
and operation of the AIRTEK•STEERTEK NXT suspension system and component parts function to
their highest efficiency. Look and replace any bent, cracked, worn or damaged parts.
HENDRICKSON RECOMMENDED PREVENTIVE MAINTENANCE INTERVALS
VISUAL INSPECTION
■■
The first 1,000 miles (1,609 km)
■■
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TSB/Document ID: 17730-313 Rev A
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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