ULTIMAAX ® – Western Star Vehicles
REAR SUSPENSIONS
VEHICLE
VEHICLE
KEY NO. PART NO.
DESCRIPTION
QTY.
KEY NO. PART NO.
DESCRIPTION
QTY.
Shear Spring Service Kit, One Side Includes Key Nos. 10, 15-16, 18-20, 28
1
Equalizing Beam Assembly w/Shock Bracket
2
60961-750
Includes Key Nos. 3-5a
78489-520 78489-540 78489-560 78489-600 60961-759
52" Beam Length 54" Beam Length 56" Beam Length 60" Beam Length
10
*Shear Spring
8
Progressive Load Spring Service Kit, One Side Includes Key Nos. 11-13
60961-751
11
*Progressive Load Spring
4
Cross Tube Service Kit, Includes Key No. 2 and Weldable Loose Plug (Not Shown)
Progressive Load Spring Fasteners Service Kit, One Side, Includes Key Nos. 12-13
34013-196
2
44642-008 60961-755
Cross Tube - 1140 mm
1
12 13 14
*M10 x 1.5 x 40 mm 6G Flange Bolt
8 8 4
Equalizing Beam Bushing Service Kit, One Beam, Includes Key No. 3-4,6-8,18-20
*M10 x 1.5 Flange Lock Nut
70886-000 34013-197
Saddle Assembly
Saddle Only Fastener Kit, One Side, Includes Key Nos. 15-16 *M20 x 1.5 x 75 mm Flange Bolt
3
Center Bushing
2
End Bushing Service Kit, One Wheel End, Includes Key Nos. 4-8
60961-752
15 16 17
8 8 4
4
*Bar Pin End Bushing Assembly, Includes Key No. 5a
*M20 x 1.5 Flange Nut
77205-001 60961-768
Saddle Cap, Replaces 77374-001
Saddle Cap Fastener Service Kit, One Side, Includes Key Nos. 18-20
5
Bar Pin Shim
8
a b c
50130-000 50131-000 57026-000
0.19" / 0.19" Standard 0.25" / 0.12" Optional
18 19 20 21
*M16 x 2 x 6G x 180 mm Flange Bolt
8 8 8 4
0.375" Optional flat shim End Bushing Fasteners Service Kit, Includes Key Nos. 6-8
*M16 Flat Washer *M16 x 2 x 6H Nut Shock Absorber
56659-001 56659-005 34013-104
Tandem
60680-015L 60680-016L 77591-002 60961-818
9½", 10½" Ride Height 10½", 11½" Ride Height
One Beam
One Wheel End
22
Upper Shock Bracket
2
Upper Shock Fasteners Service Kit, One Beam, Includes Key Nos. 23-24
6 7 8 9
*1"-8 UNC x 6" Bolt *1" Hardened Washer *1"-8 UNC Locknut Frame Hanger, 34" Width
8
16
8 2
23 24 25
*M16 x 2 x 140 mm Flange Bolt
4 4 2
*M16 x 2 Flange Nut
• 7" Axle Drop
8240-0000-XXX **Longitudinal TRAAX ROD ™ Assembly,
78592-001 78592-002 78592-004 78592-003 78592-005 60961-749
9½" Ride Height 10½" Ride Height 11½" Ride Height
Straddle/Straddle, Specify Length in mm Replaces 92000-XXXS
26 8233-0099-XXX *** Transverse TRAAX ROD Assembly, 625 mm, 2 Straddle/Taper, Replaces 92350-625S 27 49689-000L Torque Rod Shim As Req. 28 70867-001 P-80 Lubricant - 10 ml (Not Shown) As Req.
• 7¾" Axle Drop
10½" Ride Height 11½" Ride Height
Shear and Progressive Load Spring Service Kit, One Side, Includes Key Nos. 10-13,15-16, 18-20, 28
NOTES: * Item included in service kit/assembly only, part not sold separately. ** 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. *** Transverse torque rods are mandatory for the ULTIMAAX rear suspension regardless of axle spacing.
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 (PLS 77382-001)
593
Reference Lit. No. SP-298 | 855-743-3733
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