59
Figure-6
Coolant Overflow
GG
Engine Cont.
Part 2: Coolant
Coolant runs through the engine to maintain optimal operating temperatures. If the Mudd-Ox is equipped with a
heater, engine coolant also runs through it to provide heat. The liquid is 50% glycol antifreeze and 50% water.
Inspection
Located at the top of the engine compartment is the coolant overflow (G in Figure-6). Fluid should be green with
no signs of contamination or debris. It must be filled above the “Low” but not above “Full”. If overfilled, coolant will
drain out of the hose connected to the fill cap and into the lower body.
Bleeding the System
A brand new Mudd-Ox will not have a fully bled cooling system. Meaning, there may be air bubbles that must be
“driven” out of the system.
1. Drive the Mudd-Ox at operating temperature.
2. Let the engine completely cool down.
3. See Engine Cover Removal under Accessing the Mudd-Ox and locate the engine coolant overflow. If the
coolant level is low, fill accordingly (G in Figure-6).
4. Reinstall engine cover and repeat steps #1-3 until the coolant level no longer lowers.
5. Now the cooling system is bleed. Inside the engine compartment are (2) coolant ball valves. There is (1) per
radiator. Simply twist the valves to close. Figure-7 and 8 show the valves “H” in their initial open position.
Left Side Valve
Figure-7
Right Side Valve
Figure-8
HH
HH
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