Last CDC test
P-19 Drivetrain Knowledge Quiz
Test your knowledge on the P-19 power divider and its components with this comprehensive quiz. Designed for operators and enthusiasts alike, it covers key features, operational guidelines, and system fun
Challenge yourself with questions like:
- What is the fun
ction of the modulating clutch? - How many speeds does the P-19 transmission provide?
- What is the water pump capacity of the P-19?
The P-19 power divider is such and important drivetrain component because it
Divides power to the transmission and to the dispensing system water pump
Divides power to the foam pump and to the dispensing system water pump
Provides power to simultaneously drive the transmission and the water pump
Provides power to simultaneously drive the foam pump and the water pump
The P-19 power divider is mounted on the flywheel housing between the
Driveline and axle
Engine and transmission
Nose box and water pump
Water pump and transmission
While you are driving the truck, the P-19 modulating clutch provides the operator a means to saelfy operate the
Engine
Transmission
Torque converter
Dispensing system
What minimum air pressure activiates the P-18 water pump clutch air chamber
20 psi
40 psi
90 psi
150 psi
Which P-19 power divider hydraulic system component suppies the system with 10wt. oil?
Pump
Reservior
Engine oil pan
Transmission sump
Which P-19 component lubricates the modulating clutch, center output shaft and all gears within the power divider?
Gear type pump
Vane type pump
Rotary piston pump
Piston type pump
Which P-19 component controls the power divider low oil light located on the cab dash?
Flow switch
Toggle switch
Push button switch
Four way solenoid
The filter screen in the sump of the power divider is there to
Allow oil to flow back to the reservoir
Restrict oil from returning to the reservoir
Collect small debris before the oil returns to the reservoir
Collect large debris before the oil returns to the reservoir
The P-19 transmission provides five speeds forwards and how many in reverse?
One
Two
Three
Four
Which P-19 drivetrain component drives both the front axles and a drive through shaft for the rear axle
Engine
Transmission
Power divider
Nose box
You can fill the P-19 water tank from the
Bottom access panel
Rear compartments
Side compartments
Top hatches or bottom fill connections
Before filling the P-19 water tank from the hydrant you must first?
Disconect the batteries
Open drain valves
Close the top hatch
Open the top hatch
Which P-19 component maintains a set operating pressure within the dispensing system piping?
Flow regulator valve
Pressure relief valve
Flow monitor valve
Flow control valve
Which P-19 component delivers foam concentrate into the water system?
Water pump
Agent selection valve
Proportioning valve
Multi metering valve
The P-19 multimetering manifold delivers foam concentrate using three orifices controlled by
Air valves
Electrical valves
Hydraulic valves
Electric over hydraulic valves
The P-19 agent selection valve is located on the
Right hand side of the dash
Left hand side of the dash
Bottom of the dash
Top of dash
P-19 operators use the selection valve to select
Foward or reverse
Foam or water
Electric or air
Fast or slow
When operating the P-19 in "crash mode", what must the engine speed be at before shifting the agent selection valve?
0 rpm
Idle
Full engine rpm
Midrange rpm
The P-19 HALE 50FO-P water pump capacity is
9 gpm
95 gpm
900 gpm
950 gpm
What type of single stage water pump is used on the P-19
Centrifugal type
Hydraulic type
Rotary type
Air type
You must use the P-19 dispensing system water pump priming device when
Pumping in relay
Pumping from a hydrant
Operating the pump from draft
Operating the pump from vacuum
The P-19 dispensing system hose reel is returned to the stored position
Manually
Electrically
Electrically or manually
By using a control cable
Which P-19 electrical component supplies current to maintain the two 24 volt batteries
Regulator
100 amp alternator
Master switch
Master relay
Which P-19 electrical component disconnects power between the vehicle batteries and electrical system?
Master solenoid
Master resistor
Master relay
Master fuse
Which P-19 winterization system component circulates the coolant?
Heater cores
Booster heater
Heat exchanger
Circulating pump
Where are the P-19 winterization system controls located?
Passenger side
Top of cab
Center console
Left dash panel
The P-19 winterization system consist of how many systems?
One
Two
Three
Four
Placing the P-19 booster heater in the ON position energizes relays
J1,J2,J3
J4,J5,J6
K1,K2,K3
K4,K5,K6
To purge the combustion chamber of unburned fuel and fumes after combustion stops, the P-19 winterization system booster heater blower motor relay should remain closed for how many minutes?
2
2 1/2 to 3
3 1/2
3 1/2 to 4
The purpose of having diodes in the P-19 winterization system booster heater ignition system is to
Hold the relays closed
Hold the relays open
Control reisistance
Control voltage
What P-19 winterizations system booster heater ignition system component uses transistors, resistors, and capacitors to control the relays during heater operation?
Control unit
Photo resistor
Temperature fuse
Thermostat control
The main purpose of the air double check valve is to
Control high pressure leaks
Control the actuating device
Control air pressure to the water pump
Direct air pressure to various components
Which P-19 air double check valve component slides to close off the outlet?
Shuttle valve
Piston valve
Rotary valve
Spring valve
Which P-19 air system valve controls air pressure to an actuating device
Relief valve
Inversion valve
Agent selection valve
Air double check valve
The P-19 air system inversion valve piston is forced back to the normal position by
A cable
A spring
The agent selection valve
The air double check valve
The P-19 sequence valve is
Hydraulically operated
Electrically opereated
Normally closed
Normally open
You are troubleshooting the modulating clutch on the P-19 power divider. You discover there is no air pressure at the modulating clutch release chamber. Your first step to correct this problem is to
Adjust the spool valve
Check the clevis pin adjustment
Check for free travel of the clutch linkage
Adjust the modulating clutch pressure relief valve
When adjusting free travel on the P-19 power divider modulating clutch the first step is to turn the
Air chamber clevis
Spool valve clockwise
Spool valve counter clockwise
Modulating clutch release bearing
If the P19 clutch lubrication system has low oil flow, the operator is notified by
An illuminated red light
An audible buzzer
An audible horn
A gauge
When checking the P-19 modulating clutch oil pump pressure, you first install the pressure gauge at the
Top of pump
Bottom of pump
Outlet side of oil filter housing
Inlet side of oil filter housing
When troubleshooting the P-19 water pump clutch for slippage, your first troubleshooting step would be to check to see if air pressure is
60 psi or lower
80 psi or lower
90 psi or higher
Present at the chamber
IF the P-19 water pump clutch snaps overcenter at a pressure under 500 psi, this situation requires you to
Remove the shims
Remove the clutch pack
Lube the release bearing
Adjust or replace the clutch
After removing the clutch pack from the P-19 water pump clutch, whats the next step
Mark the location of each set of shims after disassembly
Mark the location of each set of shims before disassembly
After trouble shooting mark the location of each set of shims
Before troubleshooting mark the location of each set of shims
When troubleshooting the P-19 dispensing system for low pressure, the first to determine if there is a faulty inversion valve is to
Test for low discharge pressure
Test for high discharge pressure
Inspect for excessive noise or vibration
Inspect for eexcessive leakage at delivery and exhaust
Why would there be excessive noise or vibration at the P-19 dispensing system water pump?
A worn impeller
Leaking O-rings
A broken return springs
Worn drive shaft bearings
If water pressure does not increase when adjusting the pilot relief valve on the P-19, check for a dirty or restricted
Oriface
Handline
Water inlet
Bumper turret
If the P-19 dispensing system roof turret fails to discharge either water or foam, you should check for a defective
Pilot relief valve
Four way solenoid valve
Four way solenoid valve and pressure valve
Four way solenoid, wiring, or discharge valve
What must be done to ensure proper reassembly of the P-19 four way solenoid valve?
Mark the bolts
Tag the bolts
Tag or mark the bolts
Tag or mark airlines and wires
The straight stream distance of the P-19 roof turret is
175 feet
185 feet
195 feet
205 feet
The fully dispersed distance of the P-19 roof turret is
105 feet
95 feet
85 feet
75 feet
The recommended procedure for cleaning the cables on a P-19 dispensing system bumper turret is to
Use compressed air
Wipe them with a crocus cloth
Wipe them with a lint free cloth moistened with solvent
Soak them in an approved solvent and dry them with air
Broken strands of wiring in the P-19 booster heater electrical system will cause
A decrease in reistance
An increase in resistance
A decrease in amperage
An increase in voltage
You are checking a P-19 booster heater for operation. You find that combustion starts but goes out after 15 seconds. In this situation, you check the
Flame control unit
Booster heater switch
Over temperature fuse
Thermostat control unit
What is the minimum applied voltage at the P-19 booster heater control unit for a 24 volt system?
12.5 volts
14.5 volts
18.0 volts
18.5 volts
The purpose of the heat exchangers in the P-19 winterization system is to
Exchange heat
Circulate heat
Transfer coolant
Circulate coolant
The engine on the P-23 is
Gas engine
Diesel engine
Bio fuel engine
Propane engine
What compartment provides power simultaneously to the P-23 drivetrain and agent water pump?
Torque converter
Transmission
Nose box
Engine
The transmission on the P-23 fire truck is controlled and actuated
Electrically and pneumatically
Electrically and hydraulically
Manually and pneumatically
Manually and mechanically
The modulation valves for the P-23 transmission are controlled by
On/off solenoids
Normally open solenoids
Current sensitive solenoids
Polarity sensitive solenoids
What P-23 driveline component connects the transmission to the engine flywheel?
Torque converter
Modulation clutch
Torque converter through the power divider
Modulation clutch through the torque converter
What P-23 power divider modulation clutch is fully engaged and the PTO clutch disengaged during the
Normal road mode of operation
Stationary mode of operation
Structural mode of operation
Crash mode operation
The manual override electrical connectors for the P-23 transmission control unit are located
On the transmission
Inside the transmission shift tower
Underneath the L/H side of the dash
On the power divider/torque converter
Why are two transmission output speed sensors used on the P-23 transmission/power divider?
Provide redundancy in case of failure
One is for the speedometer and one is for the tachometer
One is for the cab instrumentation and one is for the structural panel
One is used to monitor the transmission speed and one is used to monitor the CTI system
IF the voltage on a P-23 electrical system drops below 10.4 VDC for more than 0.1 seconds while the vehicle is in operation, which code will appear one the P-23 transmission LCD display panel?
LN
PP
TI
No code
On the P-23 transmission, an LN code during power up indicates the
Control unit has an interal malfunction
Voltage has dropped below 10.4 VDC
Gear selector is in forward or reverse
Gear selector is in neutral
While test driving a P-23 fire truck, the LCD on the dash shows a code of SD. This code indicates the transmission has a faulty differential lock solenoid. What must you do to continue to operate the vehicle?
Nothing operation will continue
Place the control unit in override mode
Immediately stop the vehicle, further operation is not allowed
DO not attempt manual override as damage to the transmission may occur
While test driving a P-23 fire truck, the LCD on the dash shows a code of MI. This indicates a converter electric modulating valve is shorted to a power source. In this situation, normal operation can continue
With manual override
In the structural mode
In the road mode only
In all modes of operation
What is the capacity of the water tank on the P-23 dispensing system?
1,800 gal.
2,400 gal.
3,100 gal.
3,300 gal.
The EPR in the P-23 dispensing system is located
In the bumper turret piping
On the inlet side of the pump
Inside the shift tower console
Behind the L/H discharge panel
What is the discharge pressure of the Akron brass roof turret used on the P-23 dispensing system?
220 psi
200 psi
180 psi
160 psi
On the P-23 dispensing system, what is the rotational movement of the Akron brass roof turret in the manual mode of operation?
180
200
240
260
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