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AGCO Power 74 - User Manual

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Workshop Service Manual
4th Generation Engines
AGCO POWER
Linnavuori
AGCO Power - Linnavuorentie 8-10 - FIN-37240
Linnavuori, Nokia, Finland
© AGCO 2014
November 2014
8370 79492
EAME
English

Table of Contents

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Summary

Introduction

Safety Instructions

General safety instructions and remarks for using and servicing the engine.

Lifting the Engine

DANGER: Safe lifting procedures for the engine using lifting devices.

Starting the Engine After Major Maintenance

Procedure for starting the engine after major maintenance or overhaul.

Service Tool of the Engine Control System

Information on the service tool used for operating and configuring the engine control system.

Specifications

Tightening Torques

Specifications for tightening torques of various engine components.

Engine Control System Tools

List and order numbers for engine control system service tools.

Maintenance

Measuring Cylinder Liner Wear

Procedure for measuring cylinder liner wear using a micrometer and dial gauge.

Removing Cylinder Liner

Procedure for removing cylinder liners using a specialized puller tool.

Changing Camshaft Bushing (33-49 Engines)

Procedure for changing camshaft bushings in 33-49 engines.

Changing Camshaft Bushing (66-98 Engines)

Procedure for changing camshaft bushings in 66-98 engines.

Fitting Cylinder Liner

Procedure for fitting cylinder liners, including cleaning, O-rings, and height measurement.

Changing Crankshaft Rear Oil Seal

Procedure for changing the crankshaft rear oil seal, including seal replacement.

Removing Cylinder Head

Procedure for removing the cylinder head, including disconnecting hoses and manifolds.

Changing Valve Guides

Procedure for changing valve guides, including pressing out and fitting new guides.

Fitting Cylinder Head

Procedure for fitting the cylinder head, including gasket, bolts, and manifold tightening.

Reconditioning Valve Mechanism

Procedure for reconditioning valve mechanism, checking tappets, push rods, and rocker arms.

Changing Camshaft or Camshaft Gear

Procedure for changing camshaft or camshaft gear, including timing gear removal.

Adjusting Valves

Procedure for adjusting valve clearances, including engine rotation and injection order.

Removing Crankshaft

Procedure for removing the crankshaft, including oil sump and bearing cap removal.

Changing Crankshaft Gears

Procedure for changing crankshaft gears, including heating and fitting.

Fitting Crankshaft

Procedure for fitting the crankshaft, including bearing shells, thrust bearings, and end float.

Removing Pistons Together with Connecting Rods

Procedure for removing pistons and connecting rods together, including pin removal.

Changing Connecting Rod Bearings

Procedure for changing the piston pin bushing, including measurement and reaming.

Big-End Bearing

Procedure for fitting and measuring big-end bearings and checking journal clearance.

Changing Piston Rings

Procedure for changing piston rings, including groove cleaning and gap measurement.

Fitting Piston Together with Connecting Rod

Procedure for fitting the piston with the connecting rod, including lubrication and screw tightening.

Changing Crankshaft Gear Rim

Procedure for changing the crankshaft gear rim, including heating and fitting.

Removing Timing Gear Casing

Procedure for removing the timing gear casing, including oil sump and pulley removal.

Removing and Dismantling Lubricating Oil Pump

Procedure for removing and dismantling the lubricating oil pump and its components.

Assembling and Fitting Lubricating Oil Pump

Procedure for assembling and fitting the lubricating oil pump, including backlash check.

Removing the Thermostat

Procedure for removing the thermostat, including draining coolant and removing the cover.

Replacing the Thermostat

Procedure for replacing the thermostat, including gasket and cover fitting.

Reconditioning Coolant Pump

Procedure for reconditioning coolant pumps with standard bearings.

Coolant Pumps with Standard Bearings

Procedure for reconditioning coolant pumps with standard bearings.

Fitting the Turbocharger

Procedure for fitting the turbocharger, including oiling and checking manifold tightness.

Bleeding the Fuel System

Procedure for bleeding the fuel system, including using the hand pump and checking for air.

Measuring Fuel Feed Pressure

Procedure for measuring fuel feed pressure, including disconnecting sensor and using gauge.

Inspecting Injectors

Procedure for inspecting injectors, including safety warnings and run-up test.

Removing the Injectors (CRIN3)

Procedure for removing CRIN3 injectors, including pipe disconnection and seal replacement.

Fitting the Injectors (CRIN3)

Procedure for fitting CRIN3 injectors, including seat cleaning and progressive tightening.

Removing the Injectors (CRI2_16)

Procedure for removing CRI2_16 injectors, including clip and pipe removal.

Fitting the Injectors (CRI2_16)

Procedure for fitting CRI2_16 injectors, including seat straightening and flange alignment.

High-Pressure Pump

Procedures for removing and fitting the high-pressure pump.

Removing the High-Pressure Pump

Procedure for removing the high-pressure pump, including safety warnings and inspection plug use.

Fitting the High-Pressure Pump

Procedure for fitting the high-pressure pump, including O-rings, gear alignment, and pipe connections.

Mounting of SCR System Components

Procedure for mounting SCR system components, specifically the dosing module.

AGCO Power 74 Specifications

General IconGeneral
Engine TypeDiesel
Number of Cylinders6
Displacement7.4 L
TorqueUp to 1200 Nm
Fuel SystemCommon Rail
Cooling SystemLiquid-cooled
AspirationTurbocharged
Emission StandardStage V
ApplicationAgricultural machinery

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