What do the water level sight glasses indicate?

What do the water level sight glasses indicate?

• A. The Water Level In The Cooling System Is Shown By The Water Level Sight Glasses
• B. The Fuel Level Is Shown By The Sight Glasses
• C. The Temperature Is Shown By The Gauge
• D. The System Pressure Is Shown By The Gauge

Answer: (A)

Water level sight glasses show how much coolant is in the cooling system. They’re designed as a transparent indicator that lets you see the coolant level at a glance, usually with minimum and maximum marks. If the level sits at or near the minimum, you’d add coolant to bring it up; if it’s within the range, the system is properly filled. These sight glasses are not used to read fuel, temperature, or pressure—that information comes from other gauges or sensors.

Water level sight glasses show how much coolant is in the cooling system. They’re designed as a transparent indicator that lets you see the coolant level at a glance, usually with minimum and maximum marks. If the level sits at or near the minimum, you’d add coolant to bring it up; if it’s within the range, the system is properly filled. These sight glasses are not used to read fuel, temperature, or pressure—that information comes from other gauges or sensors.