Description
Yanmar YPD-MP2 YPD-MP4 Fuel Injection Service Manual provides factory technical information for the fuel injection equipment fitted to applicable Yanmar TNV direct-injection diesel engines. Publication M9961-03E070 covers the features, construction, disassembly, inspection, reassembly and adjustment of the YPD-MP2 and YPD-MP4 series fuel injection units.
This 66-page manual is intended for diesel fuel-injection technicians, engine repair workshops and experienced service personnel. It explains the precision procedures required when working on the pump, governor, hydraulic head, delivery components, timing mechanism and injection nozzles.
Clean working conditions and correct service practices are particularly important when overhauling this equipment. The manual includes safety precautions, specified adjustments, tightening torques and tool information needed to support accurate workshop work.
FUEL INJECTION PUMP CONSTRUCTION
The general information section introduces the MP distribution-type pump, identifies its principal assemblies and explains the functions of important components. Confirmed subjects include:
- MP pump outline and specifications
- Fuel injection pump construction
- Fuel injection section
- Mechanical governor section
- Fuel delivery section
- Fuel oil feed pump
- Built-in hydraulic control timer
- Cold start device and cold-starting advancer
DISASSEMBLY, INSPECTION AND REASSEMBLY
The Yanmar YPD-MP2 YPD-MP4 Fuel Injection Service Manual gives the sequence for dismantling and rebuilding the pump and governor assemblies. Coverage includes the separation, inspection and refitting of precision fuel-system components.
- Separating the pump body from the governor body
- Removing the governor weight assembly
- Dismantling the hydraulic head
- Separating the hydraulic head assembly
- Removing and refitting the camshaft
- Reassembling the hydraulic head
- Reassembling the governor
- Combining the governor and pump bodies
TESTING AND ADJUSTMENT
Adjustment information covers preparation of the fuel injection pump and the settings required for correct pump and governor operation. Procedures and reference information include:
- Adjustment preparations
- Bottom-clearance adjustment for fuel injection timing
- Bottom-clearance values and cam classification
- No-load maximum engine-speed adjustment
- Fuel-limit bolt adjustment
- Torque-rise point adjustment
- Reverse Angleich adjustment
- Starting injection quantity adjustment
- Injection-stop checking
FUEL INJECTION NOZZLES
A dedicated section describes fuel injection nozzle function, construction and workshop servicing. It covers:
- Nozzle operating principles
- Nozzle types and construction
- Fuel injection nozzle disassembly
- Cleaning and washing procedures
- Nozzle inspection
- Nozzle reassembly
- Opening-pressure adjustment
- Injection testing
TROUBLESHOOTING AND WORKSHOP DATA
The manual concludes with fault-finding information and essential assembly references for the fuel injection equipment.
- Fuel injection pump troubleshooting
- Major faults and corrective guidance
- Pump-section tightening torques
- Mechanical governor tightening torques
- Required service tools
YANMAR YPD-MP2 YPD-MP4 FUEL INJECTION SERVICE MANUAL COVERAGE
The pump models identified are YPD-3MP2, YPD-4MP2 and YPD-4MP4. Applicable Yanmar diesel engines listed by the manual are 3TNV82A, 3TNV84, 3TNV84T, 3TNV88, 4TNV84, 4TNV84T, 4TNV88, 4TNV94, 4TNV98, 4TNV98T, 4TNV106 and 4TNV106T.
MANUAL DETAILS
- Manufacturer: Yanmar Co., Ltd.
- Manual type: Fuel injection equipment service manual
- Publication number: M9961-03E070
- Models: YPD-MP2 and YPD-MP4 series
- Length: 66 pages
- Language: English
This is a specialist component service publication rather than a complete TNV engine workshop manual. Its scope is the YPD-MP2 and YPD-MP4 fuel injection equipment, associated mechanical governor and injection nozzles.
The Yanmar YPD-MP2 YPD-MP4 Fuel Injection Service Manual is suitable for workshops carrying out pump overhaul, precision reassembly, governor setting, nozzle servicing and fuel-injection fault diagnosis on the listed applications.
Reviews
There are no reviews yet.