Hale 4DK Series - Manual (Page 12)

12 Manual p/n: 029-0020-79-0
4DK Series Pumps
Note that some vehicles drive the speed-
ometer from the front wheel of the chassis.
In this case, the speedometer will not read
5 to 15 MPH after shifting to the PUMP
position. See the truck’s chassis manual
for details.
WARNING !
DO NOT LEAVE THE CAB OR ATTEMPT TO PUMP
UNTIL ALL THE GREEN PUMP LIGHTS IN THE
CAB AND PANEL ARE ON.
8. Exit the driving compartment only after all
the above steps are completed and you
are sure that the shift completed lights in
the cab and panel are on.
WARNING !
DO NOT OPEN THROTTLE UNLESS ALL GREEN
PUMP INDICATOR LIGHTS ARE ON.
9. Verify that the pump panel shift indicator
green “OK TO PUMP” light is on.
10. If necessary, open the suction valve to
allow fluid to flow into the pump.
11. If necessary to eliminate air pockets, open
appropriate valve to expel air or prime the
pump, if so equipped.
12. Note the discharge pressures and intake
pressures as applicable, then open the
engine throttle gradually until the master
discharge gauge indicates the desired
pressure.
13. Set the automatic relief valve or governor
control system according to your company
policy, if so equipped.
If the master intake gauge shows a high
vacuum before the desired discharge
pressure or flow is reached, it indicates
that you are getting all the fluid the suction
piping will supply.
2. Bring the truck to a complete stop before
attempting to shift from ROAD to PUMP.
3. Apply the truck parking brake.
4. Shift the truck transmission to the
NEUTRAL position.
5. Move the in-cab pump shift control valve
from the ROAD position to the PUMP
position. Within a few seconds the shift
warning indicator lights, indicating a com-
plete shift.
Note: If the truck manufacturer has used
another in-cab valve to achieve pump shift or
has an electric switch, follow the instructions
supplied with that valve.
6. After pump shift has completed, place the
truck transmission in the proper pump
operating range or gear.
For most operation conditions, this will be
direct drive (1:1) ratio. In addition, the
speedometer should read 5 MPH to
15 MPH (8-15 KMH) after the shift has
been completed.
7. If the shift does not complete, shift truck
transmission to “N” and repeat the entire
procedure.
Figure 4: In-Cab Pump Shift Control
Indicator
Light
Road
Position
Neutral
Position
Pump
Position Panel Placard
Control Handle
Neutral
Position