ENGINE SYSTEMS CONTINUED
Ether injection is a starting aid for cold conditions. The system injects ether into the inlet manifold. Injecting ether
improves engine start-up by improving ignition during the compression stroke. Sensors, such as the engine
temperature sensor, provide data to the machine ECM. The machine ECM uses this data to determine when to
energize the starting aid relay. The starting aid relay controls the starting aid valve, which controls the injection of
ether into the inlet manifold.
Figure 12. Ether Cylinder.
1. The radiator is mounted at the front of the machine and is part of the cooler group. The cooler group consists of
three separate units: the powertrain oil cooler (Figure 13, Item 1), the engine coolant radiator (Figure 13,
Item 2), and the engine aftercooler (Figure 13, Item 3). The radiator is a fluid-to-air cooler. Cooling occurs as
heat transfers from the coolant flowing through the radiator to the air flowing past the cooling fins.
Figure 13. Radiator.