PIB-05
18 Feb 2015
PRODUCT INFORMATION BULLETIN
Suction Loading Station
1-11
WATER PUMP TUNING
1. Clean water pump shaft and install reflective
tape.
2. Ready a hand-held or install a photo tachometer
to sense water pump shaft speed.
3. Start up vehicle.
4. In order to commission the suction loading
station, normal operation procedures must be
followed to set up the suction loading station.
Follow the procedures outlined in “Operations” to
set up and activate the suction loading station.
5. Turn the Cab Control PUMP switch ON.
Engaging/disengaging the water pump above
LOW IDLE will result in water pump component
damage and reduced service life.
6.
Operate vehicle at HIGH IDLE. Note water
pump RPM. Water pump RPM should be set to:
B3Z PUMP:
2,200 ± 50 RPM
Water pump RPM must not exceed the above
specifications with engine at high idle. Failure to
ensure water pump speed is at or below
specifications will result in reduced spray system
component service life.
7. If water pump RPM is to out of the specified
range, adjust the water pump hydraulic drive
motor flow control valve to obtain specified RPM.
Typically, the label on the knob refers to the
amount of oil being bypassed,
not
motor speed.
By turning the adjustment knob
CLOCKWISE
(BLUE ARROW)
the oil being bypassed is
reduced
,
increasing
the speed of the pump. By turning the
adjustment knob
COUNTER-CLOCKWISE
(RED
ARROW)
the oil being bypassed is
increased
,
reducing
the speed of the water pump.
Do not place your hand or tools within pump bell
while pump is rotating and/or pressure held
within the motor supply hose. Refer to the
Operator and Maintenance Manual for the
procedures to operate and maintain the pump.
Failure to follow proper procedures will result in
serious personal injury.
The flow control valve can control as much as 35
gpm or about 700 RPM.
Flow Control
Adjustment Knob
To
INCREASE
Speed
To
REDUCE
Speed