PRIMAAX ® EX•PRIMAAX ®
REAR SUSPENSIONS
■ Technical Notes The following information (Figure 1 through 3) is intended to assist in determining which suspension is equipped on the vehicle. As an example, in Figure 1, the end cap / frame hanger help identify whether the suspension is the current model PRIMAAX EX or the previous production model PRIMAAX (out of production since May 2010). OEM Specific PRIMAAX EX Parts lists are available online at www.hendrickson-intl.com Caterpillar (SP-234) • Freightliner / Western Star (SP-230)• International Truck (SP‑233) • Mack (SP‑231) • Spartan (SP‑342) • Volvo (SP-226)
PRIMAAX EX • PRIMAAX
FIGURE 1
Out of Production May 2010
Support Beam with Detachable End Cap
PRIMAAX
Enhanced U-beamAssembly with Integrated End Cap
PRIMAAX EX
INTEGRATED End Cap
Support Beam
DETACHABLE End Cap
SUSPENSION RATING CAPACITY •
FIGURE 2
S T – designates Small Clamp Group • – designatesTall Ride Height 12½",14 ",15½" 3 8 ⁄
Small Clamp Group Axle Size
Large Clamp GroupAxle Size
DANA AXLE
MERITOR AXLE
134 mm (5.3")
150.1 mm (5.9")
140 mm (5.5")
AXLE
134.8 mm (5.3")
140 mm (5.5")
117 mm (4.6")
Suspension Model: PRIMAAX EX
Suspension Model: 26K•52K•78K | 26KT•52KT•78KT PRIMAAX EX
23K•46K•69K | 23KT•46KT•69KT 26K S•52K S•78K S | 26K ST•52K ST•78K ST
PRIMAAX 230•460•690 | 230T•460T•690T
PRIMAAX 260•520•780 | 260T•520T•780T
U-bolts
U-bolts
4¼"
5"
6¼"
5 / " 9 16
384
www.hendrickson-intl.com | Reference Lit. No. SP-164
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