G) Track control
30
Trailer
Distance A, B, C, max. permissible deviation 1.0 mm. Axle alignment responsablety of vehicle manufacturer.
Axle toe in/out + 12’ = + 3.0 mm/m, Axle 12’ (SAF manufacturing tolerance)
(values apply to unloaded vehicle)
The max. permissible deviations for axle alignment are following to the tyre manufacturer’s specifications.
To avoid excessive tyre wear we recommend having the alignment checked at regular intervals.
The relevant reference point for alignment check is the hub cap centre or stub axle centre.
Alignment deviations may be caused by:
• loose U-bolts
• spring seat wear
• deformation of axle assembly components due to excessive vehicle operation.
For track control, the air suspension ride height must be adjusted to the values specified
by SAF.
Semi-trailers with trailing steering axle
Distance A, B, C, max. permissible deviation 1.0 mm. Axle alignment responsablety of vehicle manufacturer.
Axle toe in/out + 12’ = + 3.0 mm/m, Axle 12’ (SAF manufacturing tolerance)
(values apply to unloaded vehicle)
