MIL-C-62310A(AT)
3.4.16 Suspension lockout system (M741A1). A suspension lockout system shall be
provided on the M741A1 chassis to prevent suspension springing action relative to the chassis
hull. The system shall incorporate an activation mechanism (on/off), and shall be provided with
an interlock to prevent chassis from being driven with suspension locked.
3.5 Break-in run. Prior to tests, each vehicle shall be given a break-in run for the distance
specified in table I on smooth, level, hard-surfaced roads or test track. After completion of the
break-in run, there shall be no indication of damaged components, loss of original adjustment, or
other defects that may cause faulty vehicle operation subsequent to Government acceptance.
TABLE I. Speeds and distances for break-in run.
Division of run
Speed mph
Distance miles
a
0 to 10
5
b
11 to 20
5
c
21 to 30
10
d
31 to maximum
10
governed
3.5.1 Preparation. Prior to break-in run, except for equipment and component installation
and servicing performed by the contractor as a final processing of vehicles for acceptance, the
vehicle shall be completely assembled and all adjustments completed. Vehicle, including all
components requiring lubrication, shall be lubricated as specified in drawing 10942803, and
serviced with fuel conforming to VV-F-800. Specific applications by grades or types for various
expected seasonal temperature ranges shall be as specified.
3.6 Performance. A complete vehicle, loaded with rated payload, serviced as specified in
3.5.1, and equipped for existing climatic conditions, shall operate as specified herein without
special equipment. The engine disconnect clutch shall be considered special equipment.
Performance shall be demonstrated on smooth, level, hard-surfaced roads free of loose material.
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