TM-5-3805-254-14-P-1
TRUCK, DUMP, 20 TON, 6X4, ON-OFF HIGHWAY 71,000 GVW, IHC MODEL F-5070 (CCE)
TECHNICAL MANUAL; OPERATOR'S, ORGANIZATIONAL, DIRECT SUPPORT, GENERAL SUPPORT AND DEPOT MAINTENANCE MANUAL (INCLUDING REPAIR PARTS INFORMATION AND SUPPLEMENTAL MAINTENANCE INSTRUCTIONS)
AUGUST 1980
TM-5-3805-254-14-P-1 - Page 233 of 590
July 1977
DUMP BODY TARGET ON DUMP TRUCKS
1.
The ;CE-IHC Paystar F5070, 71,000 GVWR Dump Truck is equipped with a dump body target extending down from
the front cab protector into the driver's line of vision through the windshield.
The dump truck driver is continuously
assured that his truck is alright by keeping this dump body target in sight and motionless at all times, except when
dumping the body.
Any upward movement or absence of the dump body target tells the driver he must stop the truck and
find out the reason.
If the dump body accidentally begins to rise off of the chassis, the movement of the target is intended
to attract the attention of the driver.
The dump body can self-hoist during travel of the truck under situations where (1) the
hoist PTO has been left engaged and (2) the hoist lever was not in its HOLD position with the neutral lock engaged.
2.
A dump truck, traveling with the hoist slowly raising the dump body, is a serious safety hazard.
The dump body is
exposed to telephone lines, power lines, overpasses, and other overhead obstacles.
If the truck is loaded, its payload will
be spread onto the roadway.
Since the CCE dump truck height is 126-inches, only a small amount of body rise exceeds
the legal limit of 162-inches and the interstate highways overpass clearance of 192-inches (16 ft).
3.
A suggestion has been received from the field that a rubber strap with a little weight on the end of it be substituted
for the current CCE-IHC Dump Truck's steel-rod-and-washer, dump body target.
The suggestor's experience in dumping
the body in back areas, having interference with trees, has resulted in the body target becoming bent by tree limbs.
Upon
lowering the dump body to travel position, the deformed body target causes damage to the top of the cab and windshield.
The rubber strap approach would save money in windshield replacement and cab repairs.
4.
The suggestion cannot be approved.
The suggestion would be satisfactory, if the body target were only intended
for use while the dump truck was stationary. As explained in paragraph 1 above, however, the body target must be seen
by the driver at all times, except when the dump body hoist is in operation and the body is actually dumping.
This means
that, while traveling on the road, seeing the dump body target is a necessary safety factor for the driver.
Headwinds,
while the truck is moving, cause most flexible dump body targets to either bend out of the driver's line of sight or else
vibrate and move to the extent that the movement of dump body target has no meaning to the driver.
To the driver, a
fixed, stationary target would not catch his attention until it began moving upward.
On the other hand, a wind whipped
target could be ignored.
and the dump body could hoist without catching the driver's .notice until too late.
.
165
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