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|  MIL-T-62222(AT)
a. Preparation. Prior to the break-in run, except for equipment and component
installations and servicing performed by the contractor as a final processing of the
vehicle for acceptance, the vehicle shall be completely assembled and all adjustments
completed. The vehicle, including all applicable components requiring lubrication,
shall be lubricated in accordance with production lubrication chart. The vehicle shall
be serviced with fuel conforming to applicable seasonal grades of VV-F-800. Engine
oil conforming to the applicable seasonal grade of MIL-L-2104 may be used.
Specific applications by grades or types for various expected seasonal temperature
ranges shall be specified. Fuel and water separator and the primary fuel filter shall be
bled of air by removing each respective bleed plug and operating the in-tank fuel
pump. After air is bled, replace the bleed plugs.
b. Oil pressure and temperature. Prior to the start of the break-in run, the engine shall be
operated at 800 to 1200 revolutions per minute (rpm) until lubricating oil is at
operating pressure and temperature. If at any time during break-in run the engine has
been stopped for at least 30 minutes, the engine shall again be operated, as above,
before continuing break-in run. Proper oil pressure and temperature shall be
maintained during operation on level ground, 60 percent grades and 30 percent side
slopes.
3.3.2.1 Operation and distance. Each vehicle shall be given a break-in run for the distances
specified in table I on smooth, level, hard-surfaced roads. The vehicle shall be operated over the
undulating section of road (see figure 1) during "a" and "b" divisions of the break-in run in both
directions (see 4.6.1).
3.3.2.2 Reverse operation. After each division of the break-in run, the vehicle shall be
stopped, the engine allowed to idle for not less than ten minutes, and the vehicle driven in
reverse for a distance of not less than 50 feet at speeds between 2 and 7 miles per hour (mph)
(see 4.6.1).
3.3.2.3 Condition after run. After completion of the break-in run, the engine shall idle
between 700 and 750 rpm. Prior to vehicle being submitted to the Government for acceptance,
all suspension wheel bearings shall be checked to determine if adjustments are correct and
readjusted, as required. Track fasteners shall also be re-torqued (see 4.6.1).
3.3.3 Fording kit. When specified (see 6.2), the vehicle shall be furnished with a fording kit
installed, providing a capability to ford a 96 inch water depth (see 4.6.1).
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