COOLANT SYSTEM 1U8503 - Caterpillar

Horn Controls
According to railway regulations, multiple sound warning devices are required. In the operator cab, the controls are as follows:
Illustration 20 g06182268
(1) Electric horn - on the left multi-function lever
(2) Pneumatic horn - on the left button of the left joystick
(3) Emergency electric horn - on the control switch of the right armrestRailway Lights
A railway traffic lighting system is installed on the machine. Railway traffic lighting is fully automatic and active when the machine is switched to rail mode.Depending on the country of operations and railway regulations:
The railway lights, quantity, and arrangement are adapted and made compliant.
The road lights are deactivated, except for dipped headlights at night, the operator can take advantage of an additional beam of light at the front of the machine, increasing the safety of personnel working around the machine.
An additional override switch for the railway traffic lighting system is available on the right console.Railway Light Override Switch
Illustration 21 g06246475When in the Auto position, the lights are in automatic operational mode as defined by the railway regulations in the country of operation. Depending on rail-specific requirements and local railway regulations, the operator can be asked to enforce railway lights to red/white or white-red.Standard Installations and Function
When the machine travels on railway tracks, the arrangement and functioning of the railway traffic lights are defined as follows:
Table 1
Rail Traffic Lights Light Direction Red Lights White Lights
Machine Stopped Front on off
Rear on off
Forward Travel Front off on
Rear on off
Backward Travel (reverse) Front on off
Rear off on Additional Installation and Function
(If Equipped)
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(1) Rail lightA top rail light (1) on front upper frame is installed. This light only switches on when machine is in forward traveling mode on rails. This light automatically switches off in working mode.Second Cab
The machine is