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MIL-S-52124B(ME)
(h) Ground clearance excluding axles
with dolly and with either truck-
12 in., min.
tractor (M123 and M52)
(i) Upper fifth-wheel height
58 in.
(1) semitrailer level
(2) for 10 ton M123 (see MS500070) 64 in.
(3) for 5 ton M52 (see MS500008) 55 in.
(j) Landing gear clearance radius
("LWC" of SAE J701)
90 in., min.
(k) Swing radius ( "SR" of SAE J701)
58 in., max.
(l) Kingpin setting range ("KP" of
21 In. through
SAE J70l)
36 in.
(m) Center-of-gravity height
100 in., max.
3.1.3 Ease of maintenance.  All major assemblies and installed
attachments shall be accessible for maintenance and repair utilizing
common tools and special tools furnished with the screening unit.
The replacement and adjustment of components and accessories shall
be accomplished with minimum drainage and with minimum disturbance
to other components of the screening unit.  Ease of maintenance pro-
visions shall incorporate to the maximum practicable extent features
insuring operating clearances and facilitating maintenance and ser-
vicing operations.  Unless otherwise specified herein, covers, plates,
panels, and guards which must be removed for adjustment, maintenance,
or component removal shall be held in place by nonremovable studs,
washers, lockwashers, and nuts.  Where practicable access shall be
provided by a hinged door, and hinges shall be welded to door and frame of
opening .  Such doors shall be provided with a hinged or nonhinged hasp
which mates with a nonremovable stud, and be held closed by a lock-
washer and nut.
3.2 Preproduction model.  The supplier shall furnish a screening
unit for examination and test within the time frame specified (see
6.2) to prove, prior to starting production, that his production
methods and choice of design detail will produce screening units
that Comply with the requirements of this specification (see 6.3).
Examination and tests shall be those specified herein.
3.3 Initial production.  When specified (see 6.2), the supplier
shall furnish to the Government one or more screening units (see
6.2) for inspection as specified in 4.4.
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