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 Lit. No. 48422-592 –ULTIMAAX Gauge Card can be used to measure (1) the length of cut / split, (2) depth of separation and (3) the height of the progressive load spring (PLS) in unloaded condition.
457
Reference Lit. No. SP-298 | 1-866-755-5968
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