MTU 12V4000M23F_ 12V4000M23S_ 16V4000M23F_ 16V4000M23S_ MS150068_01E Diesel Engine Operating Instruc

6.5.2 DANGER

WARNING

HP pump – Relief bore check Rotating and moving engine parts. Risk of crushing, danger of parts of the body being caught or pulled in! • Only run the engine at low power. Keep away from the engine's danger zone.

High level of engine noise when the engine is running. Risk of damage to hearing! • Wear ear protectors.

HP pump – Relief bore check 1. 2.

TIM-ID: 0000012375 - 007

Visually inspect relief bore (1) for fuel discharge. For jacketed HP lines, leakage is indicated by the yellow combined alarm. If fuel discharge is found or indicated, contact Service.

178 | Task Description | MS150068/01E 2014-01

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MTU 12V4000M23F_ 12V4000M23S_ 16V4000M23F_ 16V4000M23S_ MS150068_01E Diesel Engine Operating Instruc

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6.22.9 Diagnostic features of EIM

6.22.2 Limit switch for start interlock ‒ Check

6.20.2 Differential pressure gauge – Check

6.19.1 Bilge pump – Relief bore check

6.16.1 Raw water pump – Relief bore check

6.15.6 HT coolant pump – Relief bore check

sleeve replacement

6.13.2 Engine oil – Change

6.15.2 Engine coolant level – Check

6.14.1 Engine oil filter ‒ Replacement

6.7.6 Fuel prefilter – Draining

water discharge and obstruction

and adjustment of gauge

6.7.1 Supplementary fuel filter – Overview

6.5.2 HP pump – Relief bore check

6.6.2 Injector – Removal and installation

6.4.2 Valve clearance – Check and adjustment

2.2.1 Engine side and cylinder designations

visual examination of cylinder liners

2.3.1 Engine – Main dimensions

2.1.2 Engine layout