FITTING GP-HYDRAULIC 4429566 - Caterpillar

filler cap gaskets.3. Clean the filler cap. Inspect the filler cap gaskets. Replace the cap if the gaskets are damaged. Clean the filler cap receptacle. Install the cap.4. Inspect for leaks.Water Separator
Drain Water
Fuel leaked or spilled onto hot surfaces or electrical components can cause a fire. To prevent possible injury, turn the start switch OFF when changing fuel filters or water separator elements. Clean up fuel spills immediately.
The water separator is not a filter. The water separator separates water from the fuel. The engine should never be allowed to run with the water separator more than 1/2 full- engine damage may result.
Typical water separator vent valve (1) and drain valve (2).1. Close the fuel supply line.2. Open vent valve (1). Open drain valve (2). Catch the draining water in a suitable container and dispose of properly.3. Close drain valve (2). Close vent valve (1). Open the fuel supply line.
The water separator is under suction during normal engine operation. Ensure that the valves are tightened securely to prevent air from entering the fuel system.
Air Cleaner
Check Service Indicator
Typical service indicator, mounted on the air cleaner housing.Your engine may be equipped with a different indicator.Some engines are equipped with an inlet air pressure differential gauge. The gauge reads the difference between inlet air pressure before and after the air cleaner. As the air cleaner filter element becomes dirty, the pressure differential rises. If your engine is equipped with a gauge or some other type of air cleaner service indicator, follow the air cleaner OEM recommendations for servicing the air cleaner.A service indicator may be mounted on the air cleaner or in a remote location. A colored piston showing in the window indicates the need for servicing the air cleaner.
Typical service indicator.Observe the air cleaner service indicator. Clean or replace the air cleaner filter element when the yellow diaphragm enters the red zone or the red piston locks in the visible position. If the air cleaner indicator shows red at any time, clean the filter element or install a new element.Test Service Indicator
Air cleaner service indicators are inexpensive but important instruments.* Check for ease of resetting. The indicator should reset in less than three pushes.* Check the movement of the yellow core when the engine is accelerated to rated speed. The yellow core should latch approximately at the greatest vacuum that is attained.If the indicator does not reset easily, or if the yellow core does not latch at the greatest vacuum, the indicator should be replaced. If the new indicator will not reset, the indicator sensor hole may be plugged.Severely dusty environments may require frequent indicator replacements. Replace the indicator yearly, regardless of operating conditions. Replace the indicator at Overhaul, and whenever major engine components are replaced. When you install a new indicator, excessive force may crack the top of the indicator. Tighten the indicator to a torque of 2 N m (18 lb in).Service Air Cleaner
Never run the engine without an air cleaner installed. Never run the engine with a damaged