Because of minor load instability while driving with a disabled bogie, especially
when carrying a payload, turning speeds must be reduced to 85 percent of the
maximum safe turning speeds or injury to personnel and damage to equipment
may result. (Example: A 15 mph (24 kph) maximum turn speed should be reduced
to 13 mph (21 kph) maximum turn speed.)
m. The tractor/semitrailer combination with a disabled bogie, while loaded or unloaded, must be driven at reduced
speeds as follows:
(1) With semitrailer tire pressure at 85 psi (586 kPa) for all tires, excluding tires on affected bogie, maximum
speed must not exceed 30 mph (48 kph).
Semitrailer tires, within the same suspension group as the affected bogie, can be
inflated to 100 psi (689 kPa) to allow for a slight increase in driving ability.
Suspension groups are determined using suspension controls on hydraulic
control panel (para. 2-6) consisting of curbside front, streetside front, and rear.
(2) If tractor is outfitted with an external air connector to run pneumatic tools/components, proceed as follows:
(a) Inflate remaining tires in the affected suspension group, excluding tires on affected bogie, to 100 psi (689