ULTIMAAX ® – Kenworth Vehicles
REAR SUSPENSIONS
VEHICLE
VEHICLE
KEY NO. PART NO.
DESCRIPTION
QTY.
KEY NO. PART NO.
DESCRIPTION
QTY.
Progressive Load Spring Fasteners Service Kit, One Side, Includes Key Nos. 9-10
1
Equalizing Beam Assembly, Includes Key
2
60961-812
Nos. 3-4
78634-560 78634-600 80192-560 80192-600
60K, 56" Beam Length 60K, 60" Beam Length 70K, 56" Beam Length
9
*M10 x 1.5 x 35 mm 6g Flange Bolt
8 8 4
10 11
*M10 x 1.5 Flange Locknut
80964-001M Saddle Assembly, Replaces 80964-001
Saddle Only Fasteners Service Kit, One Side, Includes Key Nos. 12-13
70K, 60" Beam Length Cross Tube Service Kit, Includes Weldable Loose End Plug (Not Shown)
34013-197
12 13 14
*M20 x 1.5 x 75 mm Flange Bolt
8 8 4
60961-759 60961-875
60K, Includes Key No. 2a
*M20 x 1.5 Flange Nut
70K, Includes Key No. 2b & Circlip (Not Shown)
80965-001 60961-879
Saddle Cap
Saddle Cap Fasteners Service Kit, One Side, Includes Key Nos. 15-16
2
Cross Tube, 1140 mm
1
a b
44642-008 78962-001
60K
70K Equalizing Beam Bushings Service Kit, One Beam, 6" Bushing 60K, Includes Key No. 3a, 4-5, 15-16 70K, ncludes Key No. 3b, 4-5, 15-16 Center Bushing Assembly, Includes End Plug
15 16 17
*M20 x 1.5 x 175 mm Flange Bolt
8 8 2
*M20 x 1.5 Flange Locknut
8232-0000-XXX ***Longitudinal Severe-duty TRAAX ROD ™
34013-290 34013-291
Assembly, Straddle/Straddle, Specify Length in mm, Replaces V-rod Assembly
3
2
18 8236-0099-XXX ****Transverse Severe-duty TRAAX ROD Assembly, 2 Straddle/Taper, Specify Length in mm Replaces V-rod Assembly Not Shown 49689-000L Torque Rod Shim As Req. 19 *****V-rod Assembly 2 20 *****Corner Bracket 4 21 *****M20 x 2.5 x 65 mm Flange Bolt 10 22 *****Axle Apex Bracket Front 2° 1 Rear 9° 1 23 70867-001 P-80 Lubricant - 10 ml (Not Shown) As Req. 24 60613-000 Rebound Support Angle 4 25 60818-002 ½" x 2¼" Flange Bolt 8 26 60819-000 ½" Flange Nut 8 27 60680-016L **Shock Absorber 4 28 78630-001 Upper Shock Bracket 4 60961-818 Upper Shock Fasteners Service Kit, One Beam, Includes Key Nos. 29-30 29 *M16 x 2 x 140 mm Flange Bolt 4 30 *M16 x 2 Flange Nut 4
a b
69538-000L 78676-001 34013-052
60K
70K, Includes Circlip, Replaces 80539-001 End Bushing and Adapter Service Kits, One Wheel End, 60K-70K, Includes Key No. 4-5 End Bushing, 60K-70K, 6" Bushing End Bushing Adapter Assembly, 60K-70K
4 5 6
10363-000L 21140-007
4 4
Frame Hanger, 34" Frame Width, 12" Ride Height 2 For Saddle Height, see Figure 1 on Page 587 60K, 7.75" Axle Drop, 19.25" Saddle Height Shear and Progressive Load Spring Service Kit, One Side, Includes Key Nos. 7-10, 12-13, 15-16, 23 70K, 8.66" Axle Drop, 20" Saddle Height
80821-003 80821-002 60961-876
Shear Spring Service Kit, One Side Includes Key Nos. 7, 12-13, 15-16, 23
60961-877
7
*Shear Spring
8
Progressive Load Spring Service Kit, One Side Includes Key Nos. 8-10
60961-822
8
*Progressive Load Spring (PLS)
4
NOTES: Quantities specified are for the vehicle. Quantities of service kit components may vary from amount shown in the list. LONGITUDINAL and Transverse TRAAX Rod bushings are non-serviceable, the entire torque rod assembly requires replacement.Visit
TRAAX ROD website www.traaxrods.com for more information. * Item included in kit/assembly only, part not sold separately. ** Shock absorbers are mandatory for the tractor applications and optional for truck applications.
*** Longitudinal torque rod length may vary depending on the desired pinion angles for the axles and vehicle configuration. **** Transverse torque rods are mandatory for the ULTIMAAX rear suspension regardless of axle spacing.Transverse troque rod length may vary depending on the axle type and axle bracket. ***** V-rod assembly and parts are no longer available for production after February 2021, contact Hendrickson Truck Parts at truckparts@hendrickson-intl.com or Tech Services at wdtechservices@hendrickson-intl.com for options.
HENDRICKSON ULTIMAAX Gauge Cards to measure in unloaded condition (1) the height of the progressive load spring (PLS) and (2) the length of cut / split of the shear spring and PLS, order online www.hendrickson-intl.com/tools/gauge-request-form
• Literature No. 48422-592 (Tractor PLS 77382-001) • Literature No. 48422-598 (Truck PLS 78897-001)
589
Reference Lit. No. SP-301 | 855-743-3733
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