TM 5-3895-356-14&P
SPRAYING
Figure 21.
governor setting Immediately before
4. While spraying, momen-
GENERAL
beginning to spray
tarily drive at dry run speed to check
1. Correct spray cannot be
2. To spray, push thumb button
that bitumeter and pump tachometer
obtained unless bitumen is heated to
down, or pull catch lever, depending
readings
are
still
at
the
proper spraying temperature Cold
on control style, and move quadrant
predetermined ratio. You will apply
bitumen will not give sharp spray
control lever from "Circulate in Bar"
the desired rate per square yard
edges and will cause streaking.
position to "Distribute" position On
regardless of variation in road speed
2. See page 14 "Circulating m
units with one man control, lock
5. To stop spraying, return
Tank" for setting proper pump
thumb button down with "T" shaped
quadrant control lever to "Circulate in
speeds Higher pump speeds will
lever provided *
Bar" position Release thumb button
cause excessive fogging of spray If
3. To stop spraying, return
or catch lever if spraying operation is
higher pump and truck speeds are
quadrant control lever to "Circulate in
completed Pull up hydraulic cab
desired use larger nozzles Lower
Bar" position Release thumb button
control if pump speed exceeds 160
pump speeds will cause fan to sag,
or catch lever, if spraying operation is
G.P M.
with heavy edges
completed Reduce throttle setting if
3. Nozzle slot should make an
pump speed exceeds 160 G P.M.
angle of approximately 30 degrees
with bar centerline and every nozzle
should be at the same angle
Hydrostatic Models
5 Remain clear of rotating drives when
4. Nozzle height of 12" above road
1. Engage truck transmission in
unit is m operation to prevent
will give triple lap coverage
gears previously determined for
becoming entangled m machine
5. With "FC" spray bars do not
proper application speeds
throw control lever to spraying
2. Push hydraulic cab control
7 Monthly check and If necessary
position if end section is folded
down against stop (if it was pulled up
clean 3" overflow tube to insure tube
without first removing shoulder bolt at
to reduce pump speed to 160 G P M
has not become clogged
hinge that controls extension valves.
for circulating in bar). Immediately
6. Dram and flush out pump,
put truck in motion
Keep area clear of open flame or
3. To spray, push quadrant 11 sparks when spraying material with
bar and circulating system after each
days use, unless oil is so light that it
control lever button down, or pull
volatile cutbacks to reduce fire
will not set up when cold.
catch lever, depending on control
hazard
7. Clean pump outlet strainer
style, and move lever from "Circulate
weekly.
m Bar" position to "Distribute" 15 Spray bar on-off operation with air
position On units with one-man
Engine Drive Models
will cause control lever on quadrant
control, lock thumb button down with
1. If throttle was partially closed
to move rapidly Remain clear at all
"T" shaped lever provided *
to limit pump speed to 160 G.P M for
times to prevent injury.
circulating in bar, re-open to proper
*Thumb button or catch lever is used only to engage control for turning spray bar
valves on and off
16