Removing Air Bubble; Cabin Heater Connection - Hyundai u125 series Installation & Operation Manual

INSTALLATION & OPERATION MANUAL
3.2 REMOVING AIR BUBBLES IN COOLANT
• Start the engine and warm it up at a low rpm.
• Stop the engine and allow the engine to cool, and then open the cap of the expansion tank
carefully.
*NOTE: Never open the cap when the engine is hot. It may cause scalding.
• Refill with coolant if needed.
• Reinstall the expansion tank cap
• Check the level of the expansion tank regularly.

3.3 CABIN HEATER CONNECTION

• In order to use a cabin heater, an extra coolant
circulation pump is needed.
• After connecting cabin heater lines, engine
coolant must be refilled and checked.
• Please check coolant flow direction, as shown in
the drawing.
U125 Series Engines
NEVER OPEN THE EXPANSION TANK CAP WHEN THE ENGINE IS
OPERATING OR HOT. IT COULD RESULT IN SERIOUS PERSONAL
INJURY AND MAY CAUSE ENGINE DAMAGE.
* Outer diameter of line is Ø19.1 mm
WARNING
- 25 -
To heater
From heater