JCB 714 Super-Boss Conversion
SB002
Operator’s Manual
Issue 1, R2
Last Updated 5 April 2017
Page 26 of 43
JCB 714 Operating Control Principles
Rail Systems GUI Screen
This screen manages the rail functions for all rail-mounted operations. When operated the screen
controls the 4x4 rail drive and rail axle deploy, brakes sequencing, and steering lock system. It also
activates the rail navigation lights and gear restriction system. Gauging interlocks for the
‘smart’ modules
are also maintained by the system.
Auxiliary Control Lever
This will only function when aux is activated on the screen. This interlocks the module for travel within
W6 gauge. Normally this operates the aux hydraulics on the module attached to the chassis, e.g.
Operates the tipping ram on the 3-way tipper module or slew on the ballast distributor rear conveyor.
When the axle changeover is operated on screen, this lever then raises and lowers the selected rail
gear.
Axle Select Change-Over
This changes between forward and rear rail gear when raising and lowering the wheels. Note that the
rail axle sequencing system interlocks are always active when operating the rail axles.
Steering Lock
Once the steering lock has been operated the lock will only take affect once the chassis is straight. This
may require the steering to be moved from side to side to find the linear position until the lock engages.
The steering wheel will no longer turn until the steering lock is turned off again.
Foot Switch
The machine will only travel on rail with the foot switch pressed. This interlock prevents the machine
from travelling should the operator become incapacitated.
Gear Selector
To operate the gear selector the button on the top needs to be pressed and held in before it will select a
gear. Push the lever forw
ard into the ‘V’ position to select forward travel or pull back into the ‘R’ position
for reverse travel.
In normal use the JCB 714 has 6 forward gears and 3 reverse. If the gear lever is just put in forwards
position it will start in automatic. To change up or down gears manually move the lever to the side as
indicated on the label.
In rail mode the vehicle is reduced to 3 forward and 2 reverse gears. When the vehicle is put into
reverse in rail mode it will start in 1
st
gear and travel in the forward di
rection. When moved to the ‘+’ the
vehicle will change to 2
nd
gear followed by automatic if moved again. This is only available in reverse for
forward travel. Gear selection is manual in the reverse direction in the forward gear.
With 3-way tipper module:
•
When body is tipped the machine is restricted to 1 forward and 1 reverse gear.
•
Auxiliary control lever operates tipping ram.
