Yanmar MP Series Service Manual – PDF (MP2 / MP4)

Description

Yanmar MP Series Service Manual – Fuel Injection Pumps (MP2 / MP4) PDF DOWNLOAD

Description

Product Overview Master the maintenance of your diesel fuel systems with the Yanmar MP Series Service Manual. This technical reference is designed for authorized service professionals and covers the MP2 (3MP2, 4MP2) and MP4 (4MP4) fuel injection pumps used on Yanmar 3TNV and 4TNV series engines.

Whether you are rebuilding a governor, calibrating fuel delivery, or diagnosing a “rough idle,” this manual provides the factory procedures required. It includes in-depth sections on the Yanmar MP2 MP4 governor adjustment, ensuring your engine maintains the correct speed and load handling. The guide also details the fuel injection nozzle service, including opening pressure adjustments and spray pattern testing.

Key Features:

• Pump Overhaul: Step-by-step instructions for the disassembly and reassembly of the hydraulic head, camshaft, and distribution shaft.

• Governor Service: Complete guide to the mechanical all-speed governor, including weight assembly, tension levers, and spring replacement.

• Precise Adjustments: Detailed procedures for setting High/Low Idle, Rated Fuel Delivery, Torque Fuel Delivery, and Cold Start Timers.

• Troubleshooting: Extensive charts for diagnosing engine starting issues, knocking, smoke emission (black/white), and power loss.

Table of Contents & Categorized Index:

• 1. Introduction

  • Pump Features & Applications

• 2. Safety

  • High-Pressure Hazards & Precautions

• 3. General Service Information

  • Specifications: MP2/MP4 Data, Engine Applications

  • Torque Specifications: Pump & Governor Fasteners

  • Special Tools: Gauges, Spring Compressors, Testers

• 4. Governor

  • Operation: Speed Control, Fuel Limiter, Angleich Spring

  • Service: Removal, Disassembly, Inspection, & Installation

• 5. Fuel Injection Pump

  • Components: Charge Pump, Timer Mechanisms, Hydraulic Head

  • Disassembly/Reassembly: Plunger, Barrel, Camshaft, Roller Lifter

  • Timing: Timer Control Mechanisms (Speed, Load, Cold Start)

• 6. Adjustment

  • Setup: Test Bench Requirements

  • Procedures:

    • High Idle & Low Idle Fuel Delivery

    • Rated & Torque Fuel Delivery

    • Reverse Angleich Spring Adjustment

    • Starting & Stop Fuel Delivery

• 7. Fuel Injection Nozzle

  • Specs: Opening Pressures, Identification Numbers

  • Service: Disassembly, Cleaning, Inspection

  • Calibration: Opening Pressure Adjustment & Injection Test

• 8. Troubleshooting

  • Preliminary Checks: Fuel Flow, Timing

  • Troubleshooting Charts: Causes & Corrections for Engine Faults

File Details

• Manual Name: Yanmar MP Series Service Manual (Industrial Engines)

• Part Number: 0BMP0-U00100

• Models Covered:

  • Pumps: MP2 (3MP2, 4MP2), MP4 (4MP4)

  • Engines: 3TNV82A, 3TNV84(T), 3TNV88, 4TNV84(T), 4TNV88, 4TNV94/98(T), 4TNV106(T)

  • Year: 2007

• File Quality: High Quality PDF (Text Searchable, Clear Illustrations)

• No. of Pages: ~104