Spicer Steer Axles Application Guidelines - Manual (Page 33)

AXAG400 – February 2007 front < 27 >
4- Vocation Descriptions
The following pages describe the duty cycles, and type of road usage for various vocations / situations. In
addition to the guidelines set forth, any usage not described needs to be approved by the Dana HVTSO
Applications Engineering Department.
ƒ City Delivery
ƒ Construction
ƒ Fire Service
ƒ Heavy Haul
ƒ Intercity Coach
ƒ Line Haul
ƒ Logging
ƒ Mining
ƒ Motorhome
ƒ Oil Field
ƒ Refuse
ƒ Rescue
ƒ School Bus
ƒ Transit Coach
Class Definitions
Definitions for Classification of Application Operating Conditions
These definitions may vary by vocation – refer to the specific vocation in the Spicer® Drive Axle
Application Guidelines.
AA Turnpike or Interstate Operation on limited access, well-maintained, multi-lane
highways of excellent concrete or asphalt with maximum
adverse grades not in excess of 3%.
A On-Highway Exclusive of operation on well maintained major
highways of excellent concrete or asphalt construction.
Terrain may be level to rolling with occasional maximum
adverse grades to 8%. Operations are subject to legal
weight and dimensional limitations.
B On/Off Highway or Mountainous Highway - Secondary roads of good
concrete or asphalt where intermittent grades of up to
12% adverse may be encountered or where up to 20%
of the total operating time is spent on well maintained
off-highway roadways of crushed rock or similar
material. Grades in this class are more frequent and
severe than in Class A operation. Operation is subject to
legal weight and dimensional limitations.
C Off-Highway Operation exceeding 20% of the time on roads of gravel
or maintained crushed rock surface where the maximum
grade is 12% and frequent grades of 8% can be
encountered. This operation is not generally subject to
legal weight or dimensional limitations.