Engine Maintenance 9-15
Water in the Fuel System
Water in the fuel system can damage the injection pump, nozzles and prechambers. This damage will subsequently cause more
expensive damage to the engine. A large accumulation of water in the bottom of the fuel tank will stop a diesel engine. Water
should be drained off during scheduled maintenance inspections. Let the tank set idle for an hour before removing the drain plug
from fuel tank. Let water and fuel drain into a container until only fuel is draining from tank. Replace drain plug. DO NOT steam
clean fuel tank caps.
NOTE: Some fuel tanks have a check valve in the drain plug fitting. Push the check valve open with a small screw driver to
drain water and fuel.
TK 486 - Injection Pump
1. Bleed Screw
2. Priming Pump
TK 486V - Injection Pump
1. Bleed Screw
2. Priming Pump
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