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Perkins Perama M25 User Manual

Perkins Perama M25
80 pages
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Perkins 100 Series: 103-06/103-09/103-10
Perama: M25/M30

Questions and Answers:

Perkins Perama M25 Specifications

General IconGeneral
Engine ModelPerkins Perama M25
Number of Cylinders3
AspirationNaturally aspirated
Fuel SystemIndirect injection
Engine TypeFour stroke diesel
Bore84 mm
Power Output25 hp
Cooling SystemLiquid

Summary

Perkins 100 Series Workshop Manual

Abbreviations and Codes

Engine Build List Numbering System

Explains the standard engine parts list numbering code system.

Engine Type and Part Codes

Defines codes for engine types, parts lists, country, serial number, and year.

Foreword

Safety Precautions

Engine Diagrams

Engine Cross Sectional Views

Displays two detailed cross-sectional views of the engine.

Section I: Description

General Engine Description

Provides a general overview of the Perkins 100 Series engine.

Component Assembly Description

Details the construction of key engine components.

Engine Systems Description

Describes gear train, fuel, lubricating, and cooling systems.

Section II: General Engine Data

Engine Specifications and Data

Presents specifications for various engine models (103-06, 103-09, 103-10).

Recommended Engine Fluids

Specifies recommended coolant, fuel, and lubricating oil types.

Section III: Dismantling Sequence

Engine Component Removal Procedures

Steps for removing major engine components like alternator, fuel system, and rocker assembly.

Cylinder Head and Fuel Injection Pump Removal

Procedures for removing the cylinder head and fuel injection pump.

Crankshaft and Camshaft Assembly Removal

Steps for removing the crank pulley, oil filter, camshaft, and oil pump.

Connecting Rod, Flywheel, and Crankshaft Removal

Procedures for removing connecting rods, flywheel, and crankshaft.

Section IV: Disassembly, Inspection, Fits and Clearances

Rocker Arm Assembly: Disassembly and Inspection

Steps to disassemble and inspect the rocker arm assembly.

Cylinder Head Assembly and Inspection

Procedures for removing and inspecting the cylinder head assembly.

Cylinder Head and Valve Inspection

Checking cylinder head warping and valve stem/guide condition.

Valve-to-Guide Clearance and Valve Seat Checks

Procedures for checking valve clearances and valve seat conditions.

Valve Spring and Combustion Chamber Checks

Inspecting valve springs and the combustion chamber.

Cylinder Block Top Face Inspection

Inspecting the cylinder block top face for damage and warping.

Cylinder Bore Inspection and Re-boring

Procedures for inspecting cylinder bores and re-boring to oversize.

Piston and Piston Rings: Disassembly and Inspection

Steps for disassembling and inspecting pistons and rings.

Piston and Gudgeon Pin Clearances

Checking piston skirt and gudgeon pin clearances.

Piston Ring Checks and Oversize Rings

Inspecting piston ring gaps, clearances, and using oversize rings.

Gudgeon Pin and Connecting Rod Inspection

Checking gudgeon pin, connecting rod, and oil clearance.

Bearing Holder

Bearing Holder and Thrust Washer Inspection

Procedures for inspecting bearing holders and thrust washers.

Piston and Connecting Rod Reassembly

Steps for reassembling the piston onto the connecting rod.

Crankshaft Bearing (Bush) Inspection and Installation

Inspecting and installing crankshaft journal bushes.

Crankshaft Journal Grinding and Bush Replacement

Checking oil clearance after grinding and replacing bushes.

Crankshaft Inspection

Checking the crankshaft for deflection.

Crankshaft Oil Seal and Journal Wear Checks

Inspecting oil seal contact faces and crankshaft journal wear.

Crankshaft Grinding Specifications

Working specifications for crankshaft grinding.

Flywheel and Ring Gear Inspection

Checking the flywheel ring gear for damage or wear.

Camshaft Assembly Inspection

Inspecting camshaft journals, cams, and surface for wear.

Oil Pump Disassembly and Inspection

Steps for disassembling and inspecting the oil pump.

Timing Gear Inspection

Checking timing gears for wear and measuring backlash.

Oil Filter

Oil Filter Construction, Maintenance, and Inspection

Explains filter operation, maintenance, and inspection.

Water Pump and Thermostat Housing: Disassembly and Reassembly

Steps to disassemble and reassemble water pump and thermostat.

Fuel System Diagram and Radiator Inspection

Fuel System Diagram and Radiator Inspection

Illustrates fuel lines and details radiator inspection.

Fuel Filter and Feed Pump Procedures

Inspecting fuel filter and disassembling the feed pump.

Feed Pump Inspection and Reassembly

Feed Pump Inspection and Reassembly

Confirming feed pump integrity and reassembling it.

Governor Construction, Function, and Operation

Explains the governor's design, operation, and key functions.

Nozzle and Holder Specifications and Function

Nozzle and Holder Specifications and Function

Details nozzle/holder specs, function, and disassembly.

Nozzle Adjustment and Spray Condition Check

Procedures for adjusting and testing fuel injection nozzles.

Air Cleaner: Construction, Function, and Maintenance

Explains air cleaner operation, cleaning, and replacement.

Section V: Reassembly

General Reassembly Precautions

General precautions for assembling engine parts.

Crankshaft and Bearing Holder Assembly

Installing crankshaft bearing holders and checking end float.

Flywheel, Piston/Rod, and Sump Installation

Procedures for installing flywheel, piston/rod assembly, and sump.

Camshaft and Oil Pump Assembly

Steps for assembling camshaft and oil pump components.

Timing Gear Case and Injection Pump Installation

Installing timing gear case and injection pump.

Adjusting Fuel Injection Timing

Procedure for adjusting fuel injection timing.

Injection Timing and Piston Position Data

Tables detailing injection timing and piston position relative to crankshaft angle.

Injection Timing Shim and Cylinder Head Installation

Using shims for timing and installing the cylinder head.

Engine Component Installation Details

Installing oil pipes, rocker arm assembly, glow plugs, and nozzles.

Alternator, V-Belt, and Fan Installation

Installing alternator, V-belt, fan pulley, and cooling fan.

Section VI: Electrical Systems

Alternator Specifications, Construction, and Performance

Details alternator performance, construction, and specifications.

Alternator Testing Procedures

Performing tests on the alternator and its components.

Alternator and Flywheel Inspection

Testing alternator performance and inspecting the flywheel.

Alternator Reassembly and Regulator Specifications

Reassembling the alternator and regulator specifications.

Regulator Inspection and Troubleshooting

Inspecting and troubleshooting the regulator.

Starter Motor

Starter motor structure and specifications.

Starter Motor Operation and Disassembly

Explains starter operation and steps for disassembly.

Armature and Field Coil Inspection

Testing and inspecting starter motor armature and field coils.

Brush and Magnetic Switch Checks

Checking starter motor brushes and magnetic switch.

Troubleshooting

Diagnosing and resolving starter motor issues.

Engine Start and Glow Plug Issues

Troubleshooting engine start problems and glow plug issues.

Thermoswitch and Oil Pressure Switch

Specifications for thermoswitch and oil pressure switch.

WIRING DIAGRAMS

Shows the electrical wiring for Perama models.

15 Amp Alternator Wiring Diagram and Circuit Resistance

Electrical schematic and circuit resistance for 15A alternators.

35 Amp Alternator Wiring Diagram and Circuit Resistance

Electrical schematic and circuit resistance for 35A alternators.

Section VII: Troubleshooting

Engine Starting and Running Problems

Lists causes and remedies for engine starting, running, and stopping issues.

Engine Overheating and Smoke Issues

Lists causes and remedies for engine overheating and smoke.

Faulty Charging and Oil Lamp Issues

Troubleshooting faulty charging and oil lamp indicators.

Section VIII: Service Standards

Cylinder Head and Block Service Standards

Standard values and limits for cylinder head and block components.

Piston and Ring Service Standards (103-09)

Standard values and limits for piston and ring dimensions (103-09).

Piston Ring and Connecting Rod Service Standards

Standard values for ring clearances, widths, and connecting rod dimensions.

Crankshaft Service Standards

Standard values for crankshaft journal and pin diameters.

Crankshaft and Valve System Service Standards

Standard values for crankshaft clearances, valve stem diameters, and clearances.

Valve, Push Rod, Rocker Arm, and Oil Pump Standards

Standard values for valve timing, push rods, rocker arms, and oil pump.

Fuel System and Cooling Standards

Standard values for injection pump and cooling system temperatures.

Electrical System Service Standards

Standard values for starter motor, alternator, and regulator.

103-06 Service Standards

Standard values for cylinder head, block, piston, and pin dimensions.

Piston Ring, Connecting Rod, and Crankshaft Standards

Standard values for piston ring clearances, connecting rod dimensions, and crankshaft diameters.

Crankshaft and Valve System Standards

Standard values for crankshaft bush, valve stem, and clearance specifications.

Valve Timing, Push Rod, Rocker Arm, and Oil Pump Standards

Standard values for valve timing, push rods, rocker arms, and oil pump.

Fuel System and Cooling Standards (103-06)

Standard values for injection pump and cooling system.

Injection Nozzle, Starter Motor, Alternator, and Regulator Standards

Standard values for nozzle, starter, alternator, and regulator components.

Section IX: Recommended Torque

Tightening Torque Tables (kgf m / lbf ft)

Table of recommended torque values for various engine components.

Tightening Torque Tables (Detailed)

Detailed torque specifications for various screw sizes and grades.

Section X: Perama Extra Service Items M25/M30

Hurth Gearbox Lubrication and Checks

Procedures for checking and lubricating the Hurth gearbox.

Raw Water Pump Impeller and Drive Checks

Instructions for checking and lubricating the raw water pump.

Engine Preservation Procedures

Step-by-step guide for preserving the engine during storage.

Alternator A127 - 55 amp: Removal, Fitting, and Fault Diagnosis

Procedures for alternator removal, fitting, and diagnosing faults.

Section XI: Conversion Formulas

Tightening Torque Tables

Tables for tightening torque values based on screw size and thread type.

Torque Conversion Tables

Tables for converting torque units and other measurements.

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