ULTIMAAX ® –Western Star Vehicles
REAR SUSPENSIONS
VEHICLE
VEHICLE
KEY NO. PART NO.
DESCRIPTION
QTY.
KEY NO. PART NO.
DESCRIPTION
QTY.
1
Equalizing Beam Assembly with Shock Bracket 2 Includes Key Nos. 3-5a
10
*Shear Spring
8
Progressive Load Spring Service Kit, One Side, Includes Key Nos. 11-13 Progressive Load Spring Fasteners Service Kit, One Side, Includes Key Nos. 12-13 *Progressive Load Spring
60961-751
78489-520 78489-560 60961-759
52" Beam Length 56" Beam Length
11
4
Cross Tube Service Kit, Includes Key No. 2 and Weldable Loose Plug (Not Shown)
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,
4
*M20 x 1.5 Flange Nut
Includes Key No. 5a
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
Tandem
56659-001 56659-005 34013-104
60680-015L 60680-016L 77591-002 60961-818
9½", 10½" Ride Height 10½", 11½" Ride Height
One Beam
One Wheel End *1"-8 UNC x 6" Bolt *1" Hardened Washer *1"-8 UNC Locknut Frame Hanger, 34" Width
22
Upper Shock Bracket
2
Upper Shock Fasteners Service Kit, One Beam , Includes Key Nos. 23-24
6 7 8 9
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
92000-XXXS
ULTRA ROD ® PLUS ™ Longitudinal Torque Rod, Straddle/Straddle, Specify Length in mm Includes Key No. 27 **ULTRA ROD PLUS Torque Rod Transverse Assembly 625 mm, Straddle/Taper, Includes Key Nos. 27-28
78592-001 78592-002 78592-004 78592-003 78592-005 60961-749
9½" Ride Height 10½" Ride Height 11½" Ride Height
26
92350-625S
2
• 7¾" Axle Drop
10½" Ride Height 11½" Ride Height
27 28 29 30
66649-002L 66649-004L 49689-000L 70867-001
XTRB Straddle Bushing XTRB Taper Bushing
6 2
Shear and Progressive Load Spring Service Kit, One Side, Includes Key Nos. 10-13,15-16, 18-20, 30 Shear Spring Service Kit, One Side, Includes Key Nos. 10, 15-16, 18-20, 30
Torque Rod Shim
As Req. As Req.
P-80 Lubricant - 10 ml (Not Shown)
60961-750
NOTES: * Item included in service kit / assembly only, part not sold separately. ** Transverse 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 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. Gauge card can be obtained on-line at www.hendrickson-intl.com/Litform
541
Reference Lit. No. SP-298 | 1-866-755-5968
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