Power Distribution
RFCM / Functions
FFCM / Functions
CAN Bus
Mixed Bag
100
Power to the joystick is protected by fuse F3, a _____ amp fuse located on the ______________.
10 A, Main power board
100
True or False: The compensation cylinder is intended to level the forks as the boom angle changes.
True
100
True or False: The auxiliary hydraulics are controlled by the FFCM.
False
100
How many Can networks are on a D-series telehandler?
Three
100
Fork tilt and Auxiliary hydraulics are controlled by what?
Roller switches on the joystick
200
The park brake switch receives power directly from what?
Frame level switch
200
Pilot oil to the rear control valve comes from what component?
The priority function valve
200
The outrigger speed is controlled by the speed solenoid located where?
Inlet section of the frame level and outrigger control valve
200
List three faults that may cause a communication failure on a CAN network.
Open, short, high resistance, module fault, resistor fault, power or ground fault to a module
200
What must be applied in order for the transmission de-clutch button to be activated or deactivated?
The service brake
300
The key switch first sends power to the _______ and the _________.
Main power board and Cab module
300
What valve section is located closest to the inlet on the rear control valve?
The lift / lower section
300
How many solenoids are found on the front control valve of a 1055D?
Seven
300
If both terminating resistors are in place and the Can circuit is not compromised, what reading would you expect measuring between Can High and Can Low?
60 ohms
300
The 642 steering prioritization is accomplished where?
In the gear pump
400
True or False: The power distribution module has outputs for both switched an unswitched power.
True
400
What three conditions will cause the rear axle stabilization to go into locked mode with the boom above 40 degrees?
Parking brake on, Transmission in Neutral, or Service brake applied
400
The engine anti stall solenoid receives a signal from the _______ which receives a CAN Bus signal from the _________.
FFCM, Engine Control Module
400
If you measure voltage on a CAN network with a DMM you would expect to see around how many volts?
2.5 volts
400
On the 943, 1055, and 1255 if the main control valve and the frame level and outrigger valve do not have any pump flow, the _______ is not functioning.
Blocking valve solenoid
500
The boom angle sensor receives power from where?
The main power board (fuse F7)
500
How does the auxiliary decompression switch relieve pressure from the circuit when depressed?
A low voltage signal is sent to the auxiliary solenoids shifting the spool back and forth.
500
When any outrigger function is selected, 2 Can Bus signals are sent to the front frame control module which sends two signals out. What are those signals and where are they sent?
A 12 volt signal to the outrigger up or down solenoid and a PWM signal to the speed control solenoid
500
When booming up, the joystick sends a _____ signal to the RFCM which sends a _______ signal to the boom up solenoid.
Can Bus, variable voltage
500
How many solenoids are found on the priority valve of a 1255D?
Three