MIL-R-29231 Roller, Tandem, Self-Propelled, With Retractable Transport Wheels

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MIL-R-29231A(YD)

4.2.1 First article inspection. The first article inspection shall be

performed on one roller when a first article is required (see 3.2 and 6.2).

This inspection shall include the examination of 4.3, the tests of 4.4, and,

when specified, the preproduction pack inspection of 4.6 (see 4.6 and 6.2).

The first article may be either a first production item or a standard

production item from the supplier's current inventory provided the item meets

the requirements of the specification and is representative of the design,

construction, and manufacturing technique applicable to the remaining items to

be furnished under the contract.

4.2.2 Quality conformance inspection. The quality conformance inspection

shall include the examination of 4.3, the tests of 4.5, and the packaging

inspection of 4.6.

4.3 Examination. Each roller shall be examined for compliance with the

requirements specified in section 3 of this specification. Any redesign or

modification of the contractor's standard product to comply with specified

requirements, or any necessary redesign or modification following failure to

meet specified requirements shall receive particular attention for adequacy

and suitability. This element of inspection shall encompass all visual

examinations and dimensional measurements. Noncompliance with any specified

requirements or presence of one or more defects preventing or lessening

maximum efficiency shall constitute cause for rejection.

4.4 Tests. The first article roller shall be tested as specified in 4.4.1

through 4.4.2. Each production roller shall be subjected to the operational

test of 4.5 to verify satisfactory performance and compliance with the

requirements of this specification. Failure to pass one or more tests shall

be cause for rejection.

4.4.1 Performance Test. The roller shall be weighed tO determine

conformance to 3.7. Operate the ballasted roller in both forward and reverse

directions at maximum speed for not less than 4 hours up and down a 7-percent

grade over a bituminous or asphalt road surface. Apply the parking brake with

the engine running and the ballasted roller heading both up and down grade.

Inability of the roller to operate as specified in 3.9, inability of the

parking brake to hold the ballasted roller in a stopped position, malfunction

of any control, or leakage of fuel, lubricants, coolants, or hydraulic fluid

shall constitute failure of this test. Verify roller conformance to

dimensions specified in Table I.

4.4.2 Compaction.

4.4.2.1 Asphalt. Roller shall compact either hot or cold mix asphaltic

concrete. A test area having the minimum dimensions of not less than 7 feet

by 15 feet shall be prepared. Area shall be paved with asphaltic concrete

having a minimum thickness of not less than 3 inches. Roller shall make not

more than five passes. The compacted asphalt shall be examined to determine

conformance to the requirements of 3.9. Sprinkler system shall be operated

during this test to prove compliance with the requirements of 3.15.