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Case 668T/M2 - User Manual

Case 668T/M2
178 pages
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CASE ENGINES
445/M2 445T/M2 668T/M2
SERVICE MANUAL
Part Number: 6-74500

Table of Contents

Questions and Answers

  • P
    pcruzSep 9, 2025
    What to do if injection pump controls are broken in Case Engine?
    • A
      Amber HallSep 9, 2025
      If the injection pump controls are broken in your Case Engine, replace the faulty parts.
  • A
    Amber KingSep 7, 2025
    How to fix water pump drive belt slack in Case Engine?
    • S
      Stefanie BrownSep 7, 2025
      If the water pump drive belt is slack in your Case Engine, check and adjust the tightness of the belt.
  • M
    monicamoralesAug 22, 2025
    How to fix a flat or faulty Case 668T/M2 Engine battery?
    • T
      Tasha RuizAug 22, 2025
      If the Case Engine battery is flat, check and recharge it. If the battery is faulty, replace it.
  • D
    Deborah AguilarSep 5, 2025
    How to remove air from fuel and injection system in Case Engine?
    • M
      Matthew SanchezSep 5, 2025
      If there is air in the fuel and injection system of your Case Engine, check that the hoses are not cracked or the unions loose. Replace worn parts, remove the air from the hoses and deaerate the injection pump and fuel filter by unscrewing the caps and working the primer pump by hand.
  • P
    Peggy CantuSep 3, 2025
    How to remove impurities or water from Case Engine fuel lines?
    • D
      Dylan HernandezSep 4, 2025
      If there are impurities or water in the fuel lines of your Case Engine, disconnect the hoses and clean them using a jet of compressed air. Dismantle and clean the injection pump. Remove water from the tank and refuel.
  • C
    Courtney SosaSep 2, 2025
    How to fix incorrect timing of injection pump in Case 668T/M2 Engine?
    • M
      Mark HendersonSep 2, 2025
      If the timing of the injection pump is incorrect in your Case Engine, check and correctly time the injection pump.
  • S
    Stephen SullivanSep 1, 2025
    How to remove air bubbles from Case 668T/M2 Engine fuel lines?
    • J
      Jason PhillipsSep 1, 2025
      If there are air bubbles in the fuel lines or injection pump of your Case Engine, check the hoses to ensure that air is present and also check the fuel pump. Eliminate the air from the injection pump by unscrewing the cap and working the fuel pump by hand.
  • S
    Sylvia MartinezAug 31, 2025
    How to replace a malfunctioning thermostat in Case 668T/M2?
    • J
      John WongAug 31, 2025
      If the thermostat is malfunctioning in your Case Engine, replace it.
  • S
    Sheila GrayAug 30, 2025
    How to increase coolant level in Case 668T/M2 Engine?
    • K
      Kenneth YoungAug 30, 2025
      If the coolant level is too low in your Case Engine, top up the radiator with coolant.
  • N
    Nicole HernandezAug 28, 2025
    How to repair a faulty starter motor in Case 668T/M2?
    • R
      Rachel ThompsonAug 29, 2025
      If the starter motor in your Case Engine is faulty, repair or replace it.

Summary

Section 1 - General Specifications

LUBRICATION

Description and layout of the engine lubrication system for 4-cylinder engines.

COOLING SYSTEM

Description and layout of the engine cooling system for 4-cylinder engines.

BOOST FEEDING DIAGRAM

Diagram and description of the turbocharger system and its components.

Section 2 - Feed

Section 3 - Duty - Industrial Equipment

PART ONE - MECHANICAL COMPONENTS

Details on the mechanical components of the engine, covering overhaul procedures.

PART THREE - TROUBLESHOOTING

Guidance on diagnosing and resolving engine issues.

PART FOUR - MAINTENANCE PLANNING

Planning of controls and periodic interventions for engine maintenance.

Overhaul of Engine Provided with Mechanical Rotary Pump

ELECTRICAL COMPONET LAYOUT (4 CYL. ENGINES WITH ROTARY PUMP)

ELECTRICAL COMPONET LAYOUT (6 CYL. ENGINES WITH PUMP UNIT)

Part Three - Troubleshooting

Part Four - Maintenance Planning

Tightening Torque (for 4 and 6 Cyl.)

Section 4 - Overhaul and Technical Specifications

CLEARANCE DATA

Detailed clearance data for cylinder unit and crankshaft components for 4 and 6 cylinder engines.

ENGINE OVERHAUL

General instructions for engine overhaul procedures.

REPAIR OPERATIONS

Detailed repair operations for the cylinder unit, including checks and measurements.

OUTPUT SHAFT

Procedures for measuring journals and crankpins, and checking clearances.

CONNECTING ROD - PISTON ASSEMBLY

Data and assembly procedures for connecting rods, pistons, pins, and bearings.

CYLINDER HEAD

Procedures for removing valves, checking seals, and supporting surfaces.

VALVES

Data and checks for intake and exhaust valves, including carbon deposit removal and grinding.

FITTING CYLINDER HEAD

Steps for fitting the cylinder head, including lubrication and sealing rings.

TIGHTENING TORQUE

Specific torque values for various screws used in cylinder head and connecting rod assembly.

Case 668T/M2 Specifications

General IconGeneral
BrandCase
Model668T/M2
CategoryEngine
LanguageEnglish

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