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|  MIL-T-52843C
k.
Remove and replace headlight, floodlight, and taillight
bulbs (not including blackout lights) - 1/4 hour each
bulb.
l.
Remove, disassemble, service, and install air cleaner -
1/2 hour.
m.
Lubricate all lubrication fittings with 2 strokes per
fitting using the gun and extension specified in 3.29.1 -
1 hour.
3.8 Reliability. The forklift shall have a mean-time-between-
failure (MTBF) of 75 hours when tested as specified in 4.6.2.34,
using the failure definition in 4.6.2.35.
3.9 Performance. The forklift shall conform to the requirements
specified herein under all conditions specified without damage or
permanent deformation. There shall be no evidence of accelerated wear
or failures when operated under service conditions specified herein.
3.9.1 Stability.
3.9.1.1 Static. The rear wheels of the forklift shall not clear
the ground with 1.5 times the rated load at the applicable load
center on the forks under the following conditions:
a.
Forklift on a hard, level surface and stationary.
b.
Forks horizontal and centered on the carriage.
c.
Forks at maximum forward position (with respect to the
chassis) in the lifting arc.
d.
Forklift fully fueled.
e.
Forklift at maximum steer angle.
3.9.1.2 Dynamic. The forklift shall negotiate a 15 percent slope
with and without rated load in the carry position, in full circle
operation at maximum steer angles in both directions without any
wheel leaving the ground. The forklift while descending a 30 percent
grade in the forward direction with rated load in the carry position
(see 6.10.3) at not less than 2 mph, shall stop by rapidly applying
the service brake without the rear wheels leaving the ground.
3.9.2 Vehicle flotation. The truck shall have a Floatation Index
(FI) of not more than 25 with rated load in carry position and
without rated load. The FI shall be calculated using the following
formula:
0.0752( PF - PR )
FI = Antilog
0.211 - 0.350 C + 0.00710 P -
P
0.0402( AF - AR ) + 0.0346K
A
12
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