MIL-DTL-62073H(AT)
completely lubricate the trailer and all running gear with standard products specified in table III
for the ambient temperature at the delivery point (see 4.7.1).
Service product specifications.
TABLE III.
Ambient air temperature operating range
-10 to +132 °F
-65 to 0 °F
Product
(-23.3 to +55.6 °C)
(-53.9 to -17.8 °C)
Oil:
Hydraulic brakes
MIL-PRF-46176
MIL-PRF-46176
Shock absorbers
MIL-PRF-6083
MIL-PRF-6083
General purpose lubrication
MIL-PRF-3150
A-A-52557
Grease:
Sealed bearings
MIL-PRF-23827
MIL-PRF-23827
General chassis lubrication,
MIL-PRF-10924
MIL-PRF-10924
including wheel bearings
3.7
Support and ownership requirements.
3.7.1 Reliability. Trailers shall possess not less than a 60% probability of completing
not less than 6000 miles (9656 km) of operation in accordance with the operational profile
specified in 4.8.1.1, without failure of components, assemblies, or subassemblies: i.e.,
suspension, including springs, axles and wheels; brake systems; landing device; leveling jacks
and when specified; lunette; and frame (see 4.8.1).
3.7.2 Maintainability. Total scheduled maintenance excluding driver/crew checks and
services shall be between 4 and 6 manhours, and total unscheduled maintenance shall be between
0 and 10 manhours, during the first 6000 miles of operation in accordance with the operational
profile (see 3.8.1.1). This equates to a maintenance ratio (MR) of 0.013 to 0.053 at 20 mph (32
km/h) and a MR of 0.02 to 0.08 at 30 mph (48 km/h). Scheduled maintenance intervals shall be
3 months or 3000 miles (4828 km) of operation, whichever comes first, for first article inspection
only (see 4.2). Maximum time to repair (to include diagnosis, repair, and verification) using
personnel normally employed at (see 4.8.2):
a. Organizational maintenance level shall not exceed 2 manhours 95% of the time.
b. Direct support maintenance level shall not exceed 4 manhours 95% of the time.
3.8 Operating environmental requirements. Each trailer shall operate under the
environmental conditions of 3.8.1 and 3.8.2, without degradation in performance.
3.8.1 Environmental. The trailer shall operate under extreme conditions of weather in
ambient temperatures ranging from -50 to +125 degrees Fahrenheit (°F), (-45.6 to 51.7 degrees
Celsius (°C)). The trailer shall be capable of withstanding storage at -80°F (-62°C) without
deterioration that causes failure of any component (see 4.9).
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