Shaking / using the loader, or any other activity, won't cause the Coolant to come out from the
"Overflow" tube. A Radiator cap that is weak,not holding enough pressure, not fully tighted, or too
short, will however cause this leakage. A "Overheated" engine will also. An Overflow jug can be added,
but it's really just for convienence. As long as you keep coolant in the jug, most people never open the
radiator to check the level. Without the Overflow jug, the Manuals say to check the coolant level, and
all the other Fluid levels, daily, before useage. This is from the 155d books, as well as other operator
manuals I have seen.
I have found that keeping the radiator full keeps the Thermosiphon system happy. If the level
is more than an inch from the top, the "flow" is noticably reduced. Anytime the top neck of the
radiator is lower than the water outlet of the engine, as in facing downhill, also slows down the
Thermosiphon action. They will overheat if the slope is steep. The belt must be tight also,for the
fan to draw enough air. At the higher rpm's,above 1,800, they need the additional airflow to cool
the radiator core. Keep the Debris Screen and the radiator Fins clean. They can get plugged up
Really Quick, depending on what get sucked up into them.
I connected a jumper wire from the Temp sender to the Horn on both of mine as a Audible alarm.
To test the Temp lamp,push the horn button. This feature works very well while facing backwords
watching an Implement, or on the Backhoe.
Hope this wasn't too long winded..............Lloyd
