Note: Nothing in this standard supercedes
applicable laws and regulations.
Note: In the event of conflict between the
English and domestic language, the English language shall take
precedence.
Purpose. This test procedure is used to
evaluate the air leak integrity of Powertrain sealing test fixtures
intended to contain oil, coolant, air and establishes if the test
fixtures and test joints have been sufficiently sealed prior to the
start of test, and if any leak path has been created at the end of
test (EOT).
Applicability. This test procedure is suited to
the evaluation of all Powertrain sealing systems using a test
pressure up to 700 kPa (100 psi).
This test procedure can be used with water/soap mixture or a
water tank to determine the location of a leak, as well as with a
mass air flow meter to quantify the actual leak rate.
This test is often used with other sealing test procedures. See
GMW3152 and GMW3155 as a check of seal integrity.
Remarks. Supplier Introduction. This test is a
required General Motors Powertrain (GMPT) test for any design or
process change made to all Powertrain sealing systems, and shall be
run according to Section 4. The required test pressure and the
maximum allowable leak rate will be specified by the GMPT
development, validation, or release engineer who is responsible for
the part being tested.