Mitsubishi — Mitsubishi Diesel Engine Service Manual

SAFETY CAUTIONS Caution Other considerations Never alter or modify the engine Altering or modifying the engine in any way will nullify the warranty. A modified engine may not only break but also lead to injury. Do not tamper with sealing To help ensure trouble-free operation of the engine, the fuel control link has been sealed to achieve the correct fuel injection volume and engine speed. If the sealed setting is tampered with, the following will result and the correct functioning of the engine is no longer guaranteed. Sliding and rotating parts will wear faster. Various parts will seize/become damaged. The engine will consume more fuel and oil.

The governor and fuel injection volume go out of balance, reducing the engine performance. Daily and periodical inspection Perform the daily and periodical inspection in accordance with the Operation and Maintenance Manual. Failure to observe the instructions of the manual may lead to many problems, and the various engine parts may eventually fail, possibly causing a serious accident. Running-in period A brand new engine requires a running-in period of 50 hours, during which never put the engine under severe load. Otherwise, the service life of the engine will be reduced. Warming up the engine Before starting work, warm up the engine by running it at low idle for 5 to 10 minutes.

Warming up the engine will not only smoothen the operation of various engine parts but also help extend its service life. It also helps maximize the performance and achieve economical running of the engine. Do not warm up the engine longer than necessary. Doing so facilitates carbon deposit on the cylinders, possibly leading to poor combustion. Do not overload the engine Do not continue to run the engine if it emits black smoke. Overloaded running of the engine (accompanied by black smoke) not only consumes excessive fuel but also facilitates carbon deposit and thus shortens the service life of the engine.

Cooling down the engine Before stopping the engine, cool it down (by running it at low idle) for 5 to 6 minutes. Stopping the engine suddenly while it is heavily loaded will result in some areas of the engine remaining extremely hot for a while, which is detrimental to the long service life of an engine. While the engine is being run at low idle for cooling, check the engine for any problems. Do not spill water onto the engine Ensure that no rainwater etc. enters into the engine from the exhaust or inlet manifold, or via any other routes. Do not run the engine while at the same time washing it. Otherwise, cleaning fluid (water) may be sucked into the engine.

If the engine is started with water trapped in the combustion chambers, water hammering will result, causing the engine to fail and possibly leading to a serious accident. 0 - 7