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MIL-T-972 OF(USAF)
Production tests shall be performed on each
4.2.2.1 Production tests.
lift truck and consist of ail tests described below.
Cycle test with a 3000 pound load on the cradle, five complete cycles
a.
of each hydraulic motion.
Road test with a 3000 pound load on the cradle, one mile.
b.
c.
Service brake test per 4.6.9 except the grade shall be 10%.
Parking brake test per 4.6.10 except the grade shall be 10%
d.
Structural overload test per 4.6.4 except load shall be 6000 pounds.
e.
4.2.2.2
P e r i o d i c sampling tests. O n e l i f t t r u c k s h a l l b e s e l e c t e d f r o m
each 50, or fraction thereof, on the contract or order and subjected to
The test sample shall be selected by the procuring activity
sampling tests.
from production lift trucks which have successfully completed all production
The sampling tests shall consist of all tests described under 4.6
tests.
The structural
except for 4.6.3, environmental tests, and 4.6 .6, towing tests.
overload test (4.6.4) shall be performed at a test load of 6000 pounds.
4 . 3 R e j e c t i o n a n d r e t e s t . When one item selected from a production run
fails to meet the specification, no Item still on hand or later produced shall
be accepted until the extent and cause of failure are determined.
For operational reasons, individual
4.3.1 Individual tests may continue
tests may be continued pending the i n v e s t i g a t i o n o f a s a m p l i n g t e s t f a i l u r e ,
but final acceptance of items on hand or produced later shall not be made until
it is determined that items meet all other requirements of the specification.
The investigation of a test
4.3.2 Defects in items already accepted.
failure could indicate that defects may exist in items already accepted. If
so, the contractor shall fully advise' the procuring activity of all defects
likely to be found and methods of correcting them.
Unless otherwise specified herein, tests shall be
4.4 Test conditions.
performed under ambient atmospheric c o n d i t i o n s p r e v a i l i n g a t t i m e o f t e s t .
The environmental tests (4.6.3) shall be performed
4.4.1 Order of tests,
first in any order convenient to the contractor and acceptable to the Govern-
ment . E n v i r o n m e n t a l t e s t s s h a l l b e f o l l o w e d b y s t r u c t u r a l o v e r l o a d t e s t s
(4.6.4).
The remainder of the tests may be performed in any order convenient
to the contractor and acceptable to the Government.
The contractor s h a l l p r e p a r e a f i r s t a r t i c l e t e s t r e p o r t
4.5 Test report.
in accordance with MIL-STD-831 and furnish three complete copies of the report
the procuring activity.
4.6 Test methods.
4 . 6 . 1 Examination of product, Each lift truck shall be examined for con-
formance with this-specification and applicable drawing with respect to work-
manship , m a t e r i a l D i m e n s i o n s , a n d m a r k i n g s .
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