This document mainly introduces the features and characteristics of SAF-HOLLAND's air suspension system axles.
This workshop pocket manual from SAF-HOLLAND covers SAF axles with air suspension system, including the INTRADISC and INTRADRUM types and the MODUL axle with disc or drum brake. It is a compact on-the-job reference (document XL-AA40000MM, Rev C, 07/2016) for workshop staff servicing these axles.
The manual shows how to identify an axle from its type plate, gives torque settings and tensioning sequences for the INTRA and MODUL hanger brackets and pivot bolts, and covers shock absorber installation position, brake disc and brake pad wear limits, 3D bushing joint elasticity, and greasing of the axle stub end and drum brake. Contact details for SAF-HOLLAND customer service, spare parts and the emergency hotline are listed at the end.
| Brake disc minimum thickness | 37 mm |
|---|---|
| Brake pad minimum thickness | 2 mm |
| 3D bushing joint elasticity under 30 kN longitudinal force | ±14 mm (28 mm total) |
| Pivot bolt torque M30 (AF46) | 400 Nm + 120° |
| M20x1.5 (AF30) nut contact surface, dry (INTRA) | 600 Nm |
| M12 (AF19) torque (INTRA) | 40 Nm |
| M16 (AF24) torque with steel plunger piston | 180 Nm |
| Control torque for stainless steel/aluminium hanger brackets | 1200 Nm |
| M24 x 2 (AF36) torque (MODUL) | 400 Nm |
| M22 x 1.5 (AF32) torque (MODUL) | 580 Nm |
| Maximum coating thickness on screw contact surface | 45 µm |
| Grease quantity for axle stub end | 1 g |
The brake disc must not go below 37 mm and the brake pad must not go below 2 mm.
The “TOP” label of the shock absorber must point upwards.
Apply 1 g of grease to prevent tribocorrosion.
The control torque is 1200 Nm, with an initial inspection after 10,000 km or 5 weeks.