SAF-HOLLAND CBXAS Series Installation And Operation Manual Download

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XL-AS20100BM-en-US

Installation and Operation Manual

CBXAS Suspension Series

Fixed Frame Top Mount Trailer Air Suspension

For Disc and Drum Brake Applications

23,000 lb, 25,000 lb, and 30,000 lb Capacities

Summary of Contents for CBXAS Series

Page 1: ...L AS20100BM en US Installation and Operation Manual CBXAS Suspension Series Fixed Frame Top Mount Trailer Air Suspension For Disc and Drum Brake Applications 23 000 lb 25 000 lb and 30 000 lb Capacities ...

Page 2: ...le on the internet at www safholland us When replacement parts are required SAF HOLLAND highly recommends the use of only SAF HOLLAND Original Parts A list of technical support locations that supply SAF HOLLAND Original Parts and an Aftermarket Parts Catalog are available on our website at www safholland us Warranty Refer to the complete warranty for the country in which the product will be used A...

Page 3: ...rom unexpected movement when servicing the unit Failure to properly support and secure the vehicle and axles prior to commencing work could create a crush hazard which if not avoided could result in death or serious injury If possible unload the trailer before performing any service procedures After re positioning the brake chamber slack adjuster and or ABS system as instructed in this manual alwa...

Page 4: ...ns driving on non asphalt non concrete routes e g gravel roads agricultural and forestry tracks on construction sites and in gravel pits IMPORTANT Off road operation of axles beyond the approved application design could result in damage and impair suspension system performance Follow the recommended routine maintenance and inspections described in this manual These procedures are designed so that ...

Page 5: ... loss of vehicle control could result from contact with the tires if clearances are not maintained XL AR356 01 TIRE CLEARANCE REQUIREMENTS 1 INCH 25 4 mm MINIMUM VERTICAL tire clearance is required between the top of the tire and the nearest point of contact above the tire when the air pressure is completely exhausted from the air suspension or when the axle is fully lifted if equipped with a susp...

Page 6: ... If the suspension serial tag is NOT legible or is NOT available it can identified by the appearance of the equalizing beam Figure 5 The CBXAS Series model will have a cast beam with a shock absorber mounted through it on a 5 75 axle Figure 5 4 CBXAS Series Model Nomenclature The sample tag illustrated will help interpret the information on the SAF HOLLAND Inc serial number tag The part number is ...

Page 7: ...m with the following mechanical properties Tensile Strength 72k psi 496 MPa Yield Strength 60k psi 414 MPa CharpyV Notch 20 ft lbs 27 N m at 0 F 17 7 C Elongation 22 The recommended welding gas for gas metal arc welding GMAW is 90 Argon 10 CO2 If a different gas is used welds must comply with penetration requirements illustrated Figure 7 Where the installation drawing specifies different than abov...

Page 8: ...s are free from obstruction through the full operational range of the suspension IMPORTANT A pressure protection valve PPV MUST be attached to the air reservoir in order to maintain proper air pressure Figure 8 IMPORTANT The air pressure protection valve maintains safe brake pressure Approximately 85 psig 5 9 bars opens the valve and 65 psig 4 5 bars closes the valve NOTE When installing the press...

Page 9: ...to the height control valve HCV and suspension is installed properly Figure 9 3 Install the service and emergency lines to the suspension and allow the suspension to air up 4 Measure the ride height of the suspension with a tape measure Figure 10 5 Compare the measured suspension ride height value to the appropriate value Table 1 Ensure the measured ride height value is within 1 4 6 mm IMPORTANT I...

Page 10: ...cations then lower the trailer onto the jack stands Failure to properly support the suspension during maintenance could create a crush hazard which if not avoided could result in death or serious injury Table 2 A RIDE HEIGHT 14 15 16 17 4 Exhaust all air from the suspension set the parking brakes and chock the wheels Failure to exhaust the suspension air and chock the tires prior to beginning main...

Page 11: ...eight and remove the jack stands 10 Slowly lower the trailer so that the trailer suspension is fully collapsed 11 Pull the pin and apply air to the trailer allowing the suspension to return to ride height 12 With the suspension at rest measure the ride height Ride height MUST be within 1 4 6 mm of the suspensions specified ride height 13 Spray a soapy water mix on all air line connections to check...

Page 12: ...ing the measurements per Section 9 Step 3 align each axle Align by rotating the alignment bolt head using a 1 3 8 socket wrench on the front face of the road side frame bracket clockwise to move axle forward A arrows counterclockwise to move axle rearward B arrows Figure 16 Approximately 250 ft lbs 339 N m will be required IMPORTANT DO NOT loosen the pivot bolts IMPORTANT Two 2 scribe lines on the...

Page 13: ...llation Instructions 10 Brake Adjustment Instructions Brakes should be adjusted per axle and brake manufacturer s specifications For CBXAS 30 Suspensions with Drum Brake Systems refer to SAF HOLLAND Drum Brake Service Manual XL TA10006OM For CBXAS 30 Suspension with Disc Brake Systems refer to SAF HOLLAND Disc Brake Service Manuals XL SA20018UM en US P89 NEW and XL SA20024UM en US P89 PLUS ...

Page 14: ...proper installation and make sure that the upper and lower 3 4 shock absorber nuts are torqued to 140 175 ft lbs 190 237 N m Figure 18 4 Verify that the 1 2 air spring mounting nut is torqued to 30 40 ft lbs 41 54 N m CBXAS 23 25 or lower 1 2 bolts are torqued to 30 40 ft lbs 41 54 N m CBXAS 30 and the 3 4 air spring mounting nuts are torqued to 40 45 ft lbs 54 61 N m Figure 18 5 With the suspensi...

Page 15: ...l other nuts and bolts for proper torque refer to the specifications listed in Section 13 Re torque as necessary thereafter 3 With the vehicle on a level surface and air pressure above 85 psig 5 9 bars verify that all the air springs are of sufficient and equal firmness NOTE Check all air control system fittings for air leaks by applying a soapy water solution and checking for bubbles at all air c...

Page 16: ...lining If equipped with 7 8 pan head shear bolt ensure that the spline is sheared off and that there are no signs of movement NOTE Torque specifications listed above are with clean lubricated coated threads Table 3 All new SAF HOLLAND fasteners come precoated from the factory For bolt and lock nut grade markings refer to Figure 19 IMPORTANT The use of special lubricants with friction modifiers suc...

Page 17: ...17 XL AS20100BM en US 2020 12 21 Amendments and Errors Reserved SAF HOLLAND Inc SAF HOLLAND HOLLAND SAF and logos are trademarks of SAF HOLLAND S A SAF HOLLAND GmbH and SAF HOLLAND Inc Notes ...

Page 18: ...18 XL AS20100BM en US 2020 12 21 Amendments and Errors Reserved SAF HOLLAND Inc SAF HOLLAND HOLLAND SAF and logos are trademarks of SAF HOLLAND S A SAF HOLLAND GmbH and SAF HOLLAND Inc Notes ...

Page 19: ...19 XL AS20100BM en US 2020 12 21 Amendments and Errors Reserved SAF HOLLAND Inc SAF HOLLAND HOLLAND SAF and logos are trademarks of SAF HOLLAND S A SAF HOLLAND GmbH and SAF HOLLAND Inc Notes ...

Page 20: ...ginal component assembly SAF HOLLAND Original Parts are tested and designed to provide maximum performance and durability Will fits look alikes or worse yet counterfeit parts will only limit the performance potential and could possibly void SAF HOLLAND s warranty Always be sure to spec SAF HOLLAND Original Parts when servicing your SAF HOLLAND product SAF HOLLAND USA INC 1950 Industrial Blvd Muske...

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