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|  MIL-R-52499C(ME)
4.5.2 Tests.
4.5.2.1 Test conditions. Unless otherwise specified in a test, tests shall be performed
without shelter and at the climatic conditions existing at the place of test. The roller shall operate
as specified herein without maintenance other than the contractor's recommended normal
scheduled maintenance as established by a maintenance schedule prepared and submitted by the
contractor prior to test. Prior to testing, lubricate the roller with military lubricants as specified
in 3.18. After checking and servicing the roller, connect the lunette of the roller drawbar to the
drawbar or pintle of the test towing unit. When a remote control system is furnished
(see 3.12.5 and 6.2) the test specified in 4.5.2.2 shall be conducted using the remote control
system to control the roller operation.
4.5.2.2 Towing. Start the engine using the engine controls and engage the vibrating
mechanism. Tow the roller over not less than 6 inches (type I) or 12 inches (type II) of loose dirt
fill or plowed earth at a speed of not less than 1-1/2 miles per hour and not more than 3 miles per
hour for 10 successive passes. One pass shall consist of not less than 100 linear yards. Repeat
this test for 20 operating hours. Stop the engine once during each 2-hour operating period and
restart it after a 5-minute shutdown period. During the operational test determine the VPM
frequency range.
4.5.2.2.1 Failure criteria. Inability to start the engine using only the engine controls,
inability to engage or disengage the vibrating mechanism, inability of the cleaners to prevent
accumulation of dirt as specified in 3.10, inability to stop or restart the engine using only the
engine control system, leakage of fuel or lubricants, or permanent deformation or damage shall
constitute failure of this test. Inability to vary the VPM frequency range as specified (see 3.13)
shall constitute failure of this test.
4.5.2.3 High temperature operation. The contractor shall furnish test data to prove that the
roller is capable of operating in an ambient temperature of 120 F without exceeding the engine
manufacturers recommended limits for radiator top tank temperature of applicable engine sump
and gallery oil temperatures and hydraulic component manufacturers hydraulic fluid temperature
limits.
4.5.2.3.1 Failure criteria. Failure of the contractor to provide test data or manufacturer's
certification (see 3.12) shall constitute failure of this test.
4.5.2.4 Test procedures of lifting provisions. Test procedures of lifting provisions shall be
as follows:
a. Lift the roller and hold in suspension in its normal travel position using slings that
converge not more than 24 feet above the lowest extremity of the roller. Determine the
forward angles of application for each provision. Measure the clearance between each
sling and the roller. Measure eye openings and clearance dimensions of the provisions.
Measure the load carried by each provision.
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