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Page Title:
Table 1. Speeds and Distances for Break-in Run |
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|  MIL-D-63303B(AR)
3.5.1.2 Oil pressure and temperature. prior to the start of
the break-in run, the engine shall be run until lubricating oil is
at operating pressure and temperature. If at any time during the
break-in run the engine has been stopped for at least thirty (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, fifteen (15) degree
grades and fifteen (15) degree side slope. With engine operating at
2000 to 2100 RPM, oil pressure shall be 50 10 psi (3.52 .7
2
kg/cm ) at angles of operation.
3.5.1.3 Operation and distance. Prior to tests, each dispenser
shall be given a break-in run, with the engine, launcher (position
3, max.) and magazine (dispense mode) operating. The dispenser
shall be towed, by a tactical prime mover (See 6.2) on a level, hard
surface at speeds and distances as specified in Table I and over the
undulating section (See Fig. 1) in a. and b. Break-in run distance
shall be equally divided in both directions over hump for the
purpose of observing the function and performance of various parts,
assemblies, and controls.
TABLE I - Speeds and Distances for Break-in Run
Distance-miles
(km)
(kmph)
Speed mph
Division of Run
0 to 10 (0-16)
10
(16.1)
a..............
25
(40.2)
11 - 20
(17.7 - 32.2)
b.............
5
( 8.1)
21 - 35
C..............
3.5.1.4 Braking.
3.5.1.4.1 Parking. Before start of break-in run, the dispenser
and payload shall be capable of being parked on a eleven (11) degree
slope facing up or down and be held by parking brakes only.
3. 5.1.4.2 Stopping. The dispenser, with full payload, shall be
capable of being controlled, stopped, and held without damage or
distortion within one hundred (100) feet upon application of the
brake.
3.5.1.4.3 Inertia brake application test. The inertia brake
actuator shall activate the chassis service brakes when a rearward
force is applied by the prime mover.
3.5.1.4.4 Inertia brake actuator. Actuator shall automatically
apply dispenser service brakes upon breakaway or separation from
towing vehicle and shall maintain application of these brakes,
holding dispenser chassis stationary under full payload for not less
than fifteen (15) minutes.
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