Spicer Steer and Drive Wheel Ends Service Manual - Manual (Page 8)

6
General Information
Vehicle Application Definitions
Line Haul (On-highway)
• High mileage operation (over 60,000 miles [96,500
Km] per year).
• On-highway or good to excellent concrete or
asphalt.
• More than 30 miles [48 Km] between starting and
stopping.
• 4x2, 6x2, 6x4 tractor/trailer combinations and
straight trucks.
• Check fluid levels and inspect for leaks at regular
PM maintenance intervals, not to exceed 12,000
miles.
Vocational (Off-highway)
• Low mileage operation (under 60,000 miles [96,500
Km] per year).
• Off-highway or areas of unstable or loose unim-
proved road surfaces.
• Less than 30 miles [48 Km] between starting and
stopping.
• Heavy-Duty, off-road or specialized application type
vehicles.
• Check fluid levels and inspect for leaks every 50
hours.
Severe Duty Service
• Consistent operation at or near maximum GCW or
GVW ratings.
• Dirty or wet environments.
• Consistent operation on grades greater than 8%.