MIL-T-83809(84)
two times in each direction. The speed shall be the average of the two runs in each direction. Inability of
the truck to attain the speed as specified in 3.2.6, failure of any component, overheating, malfunction or
leakage of fluid shall be cause for rejection.
4.4.7
. Drive truck forward with rated load along a horizontal approach and onto a
ramp of specified grade (see 3.2.7) and bring to a complete stop halfway up the ramp. Start from a dead
stop and proceed up the ramp to another horizontal surface. Repeat the procedure without the load.
Repeat both with and without rated load, except drive truck in reverse.
.
e brake. Demonstrate that the service brakes can stop the truck with rated load in
4.4.8
accordance with ANSI B.56.1. Failure to meet this requirement shall be cause for rejection (see 3.2.3).
.
Parking brake.. Demonstrate capability of parking brake to hold truck with the rated load, in both
4.4.9
forward and reverse direction, on the grade specified in ANSI B56.1. Failure to meet these requirements
shall be cause for rejection (see 3.2.4).
.
4.4.10 Lift assembly drift. Operate the lift system for at least three minutes to heat the hydraulic fluid
to normal operating temperature. Raise rated load to maximum fork height. Turn master switch (3.1.15)
to "OFF" position. Measure the vertical distance from ground to under side of load. Hold the load in this
position for time specified in 3.2.10. Remeasure to the same point on the load. Load lowering in excess
of the amount specified in 3.2.10 shall be cause for rejection.
4.4.11 Stability. Conduct "forward stacking," "forward travel," "lateral stacking," and "lateral travel"
tilting platform tests in accordance with ANSI B56.1. Nonconformance with the stability requirements of
ANSI B56.1 shall be cause for rejection.
v e r h e a d height. With no load on the truck and the platform at the lowest position,
4.4.12
measure vertically from the ground to the highest point on the overhead guard. Nonconformance with
3.1.8 shall be cause for rejection.
.
4.4.13 Fork operation. The forklift, carrying the rated capacity load shall be operated for a minimum
of 500 cycles over a surface paved with concrete, asphalt, macadam or equivalent. Each cycle shall
consist of the following:
(1)
Raise the rated load to the carrying position.
(2)
Travel forward a sufficient distance to operate a minimum of 100 feel at maximum speed.
(3)
Slow truck to safe speed and negotiate a 90 degree turn. Drive at least 30 feet, stop truck
and raise the load to maximum lift height at maximum lift speed.
(4)
Lower the load at maximum lowering speed to the ground. Raise to carry position.
Drive truck in reverse over the same course and return to initial start point. This consti-
(5)
tutes one cycle. Repeat steps 2 thru 6 until 500 cycles have been completed.
(6)
Two hundred and fifty (250) cycles shall be performed making a right hand 90 degree turn,
and 250 shall be performed making a lift hand 90 degree turn.
(7)
The key switch and horn shall be operated once each 50 cycles of operation.
Inability of the forklift to lift the rated load, overheating, leakage of fluid, malfunction, any wear evidenced
by removal of material, failure of any component, or failure to complete the operation shall be cause for
9
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