Repeated assembly test
Before beginning the impulse or flexure fatigue test, disassemble and reassemble the separable MAF assembly one time.
Each assembly shall have the sealing face rotated by hand 60 to 90° before each reassembly. Retighten each assembly within the minimum and maximum values recommended by the manufacturer's assembly procedure.
At the conclusion of 25 % of the test cycles for impulse and flexure fatigue test, interrupt the test and disassemble and reassemble the test specimens two more times.
At the conclusion of 50 % of the test cycles for impulse and flexure fatigue test, interrupt the test and disassemble and reassemble the test specimens two more times.
At the conclusion of 75 % of the test cycles for impulse and flexure fatigue test, interrupt the test and disassemble and reassemble the test specimens two more times.
At the conclusion of the impulse and flexure fatigue test (before post testing), disassemble and reassemble the test specimens an additional two times.
If the test specimens show no evidence of leakage after the post-test requirements for impulse and flexure fatigue, they have passed the repeated assembly test.
If the specimens leak any time during the test, discontinue the test. The affected specimens have failed the test. Note the reason for discontinuing the test in the test report.
