Air Inlet and Exhaust System - Inspect
A general visual inspection should be made to the air inlet and exhaust system. Make sure that there are no signs of leaks in the system.
There will be a reduction in the performance of the engine if there is a restriction in the air inlet system or the exhaust system.
- Inspect the engine air cleaner inlet and ducting in order to ensure that the passageway is not blocked or collapsed.
Show/hide table
Hot engine components can cause injury from burns. Before performing maintenance on the engine, allow the engine and the components to cool. |
Show/hide table
Making contact with a running engine can cause burns from hot parts and can cause injury from rotating parts. When working on an engine that is running, avoid contact with hot parts and rotating parts. |
- Inspect the engine air cleaner element. Replace a dirty engine air cleaner element with a clean engine air cleaner element.
- Check for dirt tracks on the clean side of the engine air cleaner element. If dirt tracks are observed, contaminants are flowing past the engine air cleaner element and/or the seal for the engine air cleaner element.
- For engines with composite valve mechanism covers, if you experience excessive crankcase pressure, remove the valve mechanism cover. Refer to Disassembly and Assembly, "Valve Mechanism Cover - Remove and Install" for the correct procedure. Inspect the inside of the valve mechanism cover for debris. Ensure that all of the debris is removed.
- If the breather tube is made of plastic, use low pressure air to check for a blockage in the breather tube. If a blockage is inside the cover (1), remove the cover (1). Refer to Disassembly and Assembly, "Crankcase Breather - Remove and Install" for the correct procedure. When possible, remove the blockage from the cover (1). If necessary, replace the cover (1) .
Show/hide table
Illustration 1 | g01617633 |
(1) Cover (2) Valve mechanism cover |
Caterpillar Information System:
C6.6 Marine Generator Set High Pressure Fuel Lines
New Secondary Fuel Filter{1261} New Secondary Fuel Filter{1261}
C6.6 Marine Generator Set Rocker Shaft
3500C Marine Propulsion Engines Diagnostic Trouble Codes
3500C Marine Propulsion Engines Event Codes
Replacement of the Plug for the Outlet Check Valve on the Fuel Injection Pump{1714} Replacement of the Plug for the Outlet Check Valve on the Fuel Injection Pump{1714}
3500C Marine Propulsion Engines Electrical Power Supply - Test
3500C Marine Propulsion Engines Oil Pressure Is Low
3500C Marine Propulsion Engines Oil Filter Differential Pressure Problem
C6.6 Marine Generator Set Fuel Transfer Pump
3500C Marine Propulsion Engines Inlet Air Is Restricted
3500C Marine Propulsion Engines High Altitude Derate Occurrence
New Secondary Fuel Filter{1261} New Secondary Fuel Filter{1261}
C6.6 Marine Generator Set Fuel System - Prime
C6.6 Marine Generator Set Introduction
3500C Marine Engines Exhaust Manifold
3500C Marine Engines Exhaust Manifold
C4.4 Generator Set Engines System Overview
C6.6 Marine Generator Set Valve Mechanism Cover
C4.4 Generator Set Engines Glossary
C4.4 and C6.6 Engines Electronic Service Tools
C4.4 Generator Set Engines Replacing the ECM
C6.6 Marine Generator Set Cylinder Head Valves
C4.4 Generator Set Engines Engine Wiring Information