3.5.4.3
DUMP BODY TAILGATE.
pounds per square foot) of floor area
The tailgate panel shall be not less than 8
throughout the full lift range for class F
gage (4.176 mm) (0.1644 inch) A570 steel
and G vehicles. Crossmembers shall be
(50,000 pounds psi yield strength). The
welded to the body shell with not less than
tailgate shall be double acting, opening
100 mm (4 inch) lengths of weld, front and
from top and bottom. The tailgate shall
rear of both ends of each crossmember,
include hardware, support chains, and
and with staggered intermittent welds on
tailgate latch. The latch shall be operable
not more than 300 mm (12 inch) centers.
by a control at the left front corner of the
Contact edges of crossmembers with
vehicle body. All pivot points on the
longitudinal sills and contact edges of
tailgate release shall be furnished with
welded reinforcements shall be welded for
grease fittings, including top pivot pin.
not less than 50 percent of the edge
The tailgate shall be reinforced to prevent
length. Crossmembers shall be welded to
deformation under load.
the shaped outer rub rail to limit twisting.
Gussets, 3/16 inches thick, shall be
3.5.4.4
DUMP BODY
welded to every other crossmember and
UNDERSTRUCTURE.
each
longitudinal
sill
to
provide
The dump body understructure shall
reinforcement.
conform to 3.5.4.4.1 or option code UN, at
the manufacturer's option except when
3.5.4.5
HYDRAULIC HOIST.
specified by customer.
Unless otherwise specified, the hoist
classification shall be as specified in the
3.5.4.4.1 CHANNEL OR I-BEAM
Standard
Item
Number
minimum
UNDERSTRUCTURE.
requirements and listed in the National
Body longitudinal sills, each having a
Truck Equipment Association Dump Body
minimum section modulus equivalent to
Hoist Classification Chart. The hoist shall
that provided by a 125 mm (5 inch) by 10
be a double-acting scissors or underbody
kg/m (6.7 lbs/ft) channel for class C and
type. Hoist cylinders shall be chrome
125 mm (5 inch), 14.9 kg/m (10 pounds-
plated. The hoist shall lift the body to a
per-foot) I-beam for class D, E, F, and G
minimum dumping angle of 50 degrees
shall be provided to support hoist load.
from the top of the truck chassis frame.
Crossmembers shall be on not more than
The hoist shall be capable of lowering the
380 mm (15 in.) center, for Class C and
raised body by gravity when the pump is
300 mm (12 in.) centers for Class D, E, F
disabled. Hydraulic system, pumping unit
and G.
Cross members having an
and controls shall comply with 3.1.1.11.
individual, minimum section modulus
equivalent to that provided by a 75 mm by
3.5.4.6
SAFETY LOCK.
6.1 kg/m (4.1 lbs/ft) channel for class C
A mechanical safety lock permanently
and 100 mm (4 inch), 8.0 kg/m (5.4
affixed to the dump body or hoist shall be
pounds-per-foot- channel, for class D and
furnished. The safety lock shall provide
E shall be provided to support an evenly
positive retention of the dump body with
distributed load of not less than 6800 kg
the body in the up position for servicing or
(15,000 lbs) for class C, 9070 kg (20,000
repair. The safety lock mechanism shall
pounds) for class D, and 10,900 kg
not interfere with operation of the body
(24,000 pounds) for class E body.
under any operating conditions.
Crossmembers, each having a minimum
section modulus equivalent to that
3.5.4.7
DUMP BODY MOUNTING.
provided by a 100 mm (4 inch), 11.5 kg/m
Full length rivet pads or a full-length
(7.7 pounds-per-foot- I-beam, shall be
subframe, shall be attached to the top of
provided to support an evenly distributed
the chassis frame rails. The pads or
load of not less than 1800 kg/m2 (370
subframe shall prevent the body
Page 26 of 79
to verify that this 7 4Y
For Parts Inquires call Parts Hangar, Inc (727) 493-0744
© Copyright 2015 Integrated Publishing, Inc.
A Service Disabled Veteran Owned Small Business