This is the factory service manual for the Nissan Diesel PE6 and PE6T engines, publication number 8906261-16834-300-KSS. It is a 224 page PDF that downloads instantly and opens on a phone, tablet, or shop computer.The manual is a full engine overhaul reference: general data, disassembly judgment and troubleshooting, complete engine disassembly and reassembly, the cylinder head and valve mechanism, lubrication, cooling, the fuel injection system, air intake and exhaust with the turbocharger, the electrical system, engine test procedures, and service data tables with maintenance standards and tightening torques.With it you can diagnose hard starting, overheating, low oil pressure, or smoke, then measure, adjust, and rebuild to the listed limits yourself. Print the pages you need or keep the whole file on hand in the shop.
What's Inside This Nissan Diesel Motor Co., Ltd. PE6, PE6T Manual
| System | Pages | Key Topics |
|---|---|---|
| General | 12-17 | Method of Using This Manual, Standardization of Terms, Engine Position, Abbreviation, Maintenance Standard, Wear Limit, Repair Limit, Units |
| Disassembly Judgment | 18-27 | Determining the Need for Engine Overhaul, Troubleshooting Tests, Cause of Trouble and Its Correction, Diagnosis Guide |
| Engine Disassembly and Reassembly | 28-39 | Disassembling Engine (Turbocharger, Right Side of Engine, Front Side of Engine, Left Side of Engine, Rear Side of Engine, Cylinder Head, Engine Proper, Engine Rear P.T.O.) |
| Engine Proper | 40-51 | Adjustment, Cleaning, Inspection, Repair and Replacement |
| Cylinder Head and Valve Mechanism | 52-59 | Disassembly and Cleaning, Inspection, Repair and Replacement, Reassembling |
| Lubrication System | 60-66 | Lubricating System Diagram, Oil Pump, Oil Cooler, Oil Filter |
| Cooling System | 67-75 | Cooling System Diagram, Water Pump, Thermostat, Radiator and Water Tank, Fan and Fan Drive |
| Fuel System | 76-89 | Fuel Injection Pump (Separating Each Component, Boost Compensator, Injection Pump Proper, Installing Each Component, Fuel Feed Pump and Priming Pump, Type Rq Limit Speed Governor, Type Rfd Mechanical Governor, Timer) |
| Air Intake and Exhaust System | 90-99 | Nozzle and Nozzle Holder, Fuel Filter and Overflow Valve, Turbocharger, Air Cleaner |
| Electrical System | 100-110 | Adjusting and Testing Injection Pump, Exhaust Shutter, Air Cylinder, Starting Motor |
| Auxiliary Equipment | 111-124 | Regulator, Air Heater, Air Compressor, Power Steering Oil Pump |
| Engine Test Procedures | 125-128 | Measurement of Compression Pressure, Valve Timing Measurement, Fuel Injection Timing Measurement, Engine Performance Test Methods |
| Service Data | 129-144 | Maintenance Standard Tables, Tables of Tightening Torque |
| Tools | 145-224 | Special Tools (Engine Disassembly and Reassembly, Engine Proper, Cylinder Head and Valve Mechanism, Lubrication System, Cooling System, Fuel System, Air Intake and Exhaust System, Auxiliary Equipment, Engine Test Procedures) |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Cylinder head bolt tightening torque (1st time) | 15.0 to 16.0 kgm | p. 47 |
| Cylinder head bolt tightening torque (2nd time) | 22.0 to 23.0 kgm | p. 47 |
| Fuel filter case center bolt tightening torque | 2.0 - 3.0 kgm | p. 218 |
| Nozzle nut tightening torque | 6 to 8 kgm | p. 120 |
| Injection start pressure | 200 kg/cm² | p. 121 |
| Delivery valve holder tightening torque | 11.0 to 12.0 kgm | p. 106 |
| Camshaft end play repair limit | 0.50 mm | p. 108 |
| Valve opening temperature maintenance standard | 76.5°C | p. 91 |
| Valve opening temperature wear limit | 75.0 to 78.0°C | p. 91 |
| Fit of shaft and impeller maintenance standard | 0.04T to 0.07T mm | p. 90 |
| Water pump gear nut tightening torque | 6.0 to 7.0 kgm | p. 91 |
| Intake valve stem outside diameter nominal dimension | 11.97 to 11.98 mm | p. 75 |
Nissan Diesel Motor Co., Ltd. PE6, PE6T Common Problems This Manual Covers
Hard starting or no start
Older PE6 and PE6T engines commonly start hard from air in the lines, clogged filters, injection pump wear, or bad timing. The Fuel System section covers the injection pump, feed pump, and governor service to isolate the fault.
Manual Section: Fuel System p. 76Overheating or coolant loss
Repeated temperature spikes or lost coolant point to a blocked radiator, a stuck thermostat, or a worn water pump. The Cooling System section covers the water pump, thermostat, radiator, and fan drive.
Manual Section: Cooling System p. 67Low oil pressure or bearing knock
Low pressure or a knock under load signals oil pump wear, worn bearings, or blocked oil passages. The Lubrication System section covers the oil pump, cooler, and filter with the inspection limits.
Manual Section: Lubrication System p. 60Excessive smoke or power loss
Smoke and lost power on the PE6T often come from injector imbalance, a tired turbocharger, or an air intake restriction. The Air Intake And Exhaust System section covers the nozzles, turbocharger, and air cleaner.
Manual Section: Air Intake And Exhaust System p. 90Rough running or valve noise
Misfire, vibration, or tapping at idle usually traces to valve clearance or valve seat wear. The Cylinder Head And Valve Mechanism section covers inspection, repair, and reassembly of the valve train.
Manual Section: Cylinder Head And Valve Mechanism p. 52Deciding whether to overhaul
Knowing when the engine truly needs a rebuild saves a wasted teardown. The Disassembly Judgment section carries the overhaul criteria, troubleshooting tests, and a diagnosis guide.
Manual Section: Disassembly Judgment p. 18Frequently Asked Questions
Which engines does this manual cover?
It is the Nissan Diesel service manual, publication 8906261-16834-300-KSS, for the PE6 and the turbocharged PE6T engines.
Does it cover the fuel injection pump and timing?
Yes. The Fuel System section covers the injection pump, boost compensator, feed and priming pump, governors, and timer, which is where hard starting and timing faults are diagnosed. p. 76
Are torque specs and service data included?
Yes. The Service Data section carries the maintenance standard tables and the tightening torque tables, so you can rebuild to the correct clearances and torque values. p. 129
Is this Nissan Diesel Motor Co., Ltd. PE6, PE6T manual a digital download?
A 224-page service manual in searchable PDF, ready the moment checkout completes. Open it on a computer, tablet, or phone, with no shipping wait.
Can I print specific sections of this Nissan Diesel Motor Co., Ltd. PE6, PE6T?
Yes. The PDF carries no DRM, so you can print any page or section you need for the shop. It works with any standard printer.
Are hydraulic system diagrams in this Nissan Diesel Motor Co., Ltd. PE6, PE6T?
Yes, full hydraulic system diagrams are part of the manual, covering circuits, valve locations, and hydraulic component specs for the Nissan Diesel Motor Co., Ltd. PE6, PE6T.












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