B3.9 and B5.9 Series Engines
Section 8 - Cooling System - Group 08
3/8-Inch Square Drive
Lift and hold the belt tensioner.
Install the drive belt, and release the tensioner. Refer to
Air forced through the fins of the radiator by a fan cools the
coolant pumped through the radiator. Environmental debris
(such as paper, straw, lint, and dust) can obstruct the fins
and stop the flow of air, which will reduce the cooling effect
of the radiator.
Initial Check (008-042-001)
Wear appropriate eye and face protection when using
compressed air. Flying debris and dirt can cause bodily
Inspect for plugged radiator fins.
Use compressed air to blow out the dirt and debris.
Inspect for bent or broken fins.
Inspect for radiator core and gasket leaks.
If the radiator must be replaced, refer to the equipment
manufacturer's replacement procedures.