Dodge 251 (250.6 CID) Inline 6 1938-1972 Engine Rebuild Manual | PDF Download

Description

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Dodge 251 (250.6 CID) 25" Block Straight 6 Engine Rebuild & Overhaul Manual covering servicing, maintenance, repairs and complete engine rebuilding for the 25-inch long-block flathead Straight 6 engine.

Step-by-step servicing and repair procedures – making it easy to carry out repairs
Detailed illustrations and diagrams – making repair procedures easier to understand
Specifications – including torque settings, clearances and adjustment information
Engine rebuilding information – covering dismantling, inspection and reassembly
Repair procedures – covering everything from simple routine to more involved repairs
PDF format – for easy viewing on your computer, tablet or smart phone
Bookmarked – so you can find what you need

Models Include:

Australia, New Zealand & British Commonwealth

Dodge Pick Ups, 2–3 Ton and 3–4 Ton Trucks – Series 3, 4, 5 and 6 – 1953–1962
Fargo Pick Ups, 2–3 Ton and 3–4 Ton Trucks – 1953–1962
De Soto Pick Ups, 2–3 Ton and 3–4 Ton Trucks – 1953–1962

United States & Canada

Dodge Power Wagon WM300 4x4 – 1961–1968
Dodge Medium and Heavy Duty Trucks – 1953–1962
Canadian-built Dodge and Fargo trucks equipped with the 251 25" engine

Passenger Cars

Chrysler Windsor and Royal models equipped with the 25" long-block engine
De Soto Custom and Deluxe models equipped with the 25" long-block engine
Canadian Dodge Kingsway, Regent, Crusader and Mayfair models equipped with the 25" long-block engine
Canadian Plymouth Plaza, Savoy and Belvedere models equipped with the 25" long-block engine

Military, Industrial & Agricultural Applications

Dodge M37 and related military 4x4 applications equipped with the 251 engine
Chrysler industrial applications using the 251 CID 25" engine
Agricultural, commercial and stationary equipment fitted with the Chrysler 251 CID 25" engine

What’s Included in This Manual:

Engine Specifications

Engine service specifications
Tightening information
Running and assembly clearances
Engine adjustment information
Inspection limits and service information

Engine Removal and Installation

Preparing the engine for removal
Engine removal procedures
Engine installation
Reconnecting engine equipment
Checks following installation

Engine Dismantling

Engine disassembly procedures
Removing external engine parts
Cylinder head removal
Removing pistons and connecting rods
Crankshaft removal
Camshaft and timing parts
Inspection during dismantling

Cylinder Block and Bores

Cylinder block inspection
Cylinder bore inspection
Checking cylinder condition and wear
Servicing cylinder bores
Preparing the block for reassembly

Cylinder Head

Cylinder head removal and installation
Cylinder head inspection
Combustion chamber servicing
Cylinder head gasket
Cylinder head tightening information

Pistons and Piston Rings

Piston removal and installation
Piston inspection
Piston ring removal and fitting
Piston ring clearances
Checking piston and cylinder fit
Piston pin servicing

Connecting Rods and Bearings

Connecting rod removal and installation
Connecting rod inspection
Connecting rod bearings
Bearing clearances
Connecting rod and piston assembly

Crankshaft and Main Bearings

Crankshaft removal and installation
Crankshaft inspection
Main bearing inspection and servicing
Bearing clearances
Crankshaft end play
Rear main bearing and oil sealing

Valves and Cylinder Head Servicing

Valve removal and installation
Valve inspection and servicing
Valve guides
Valve seats
Valve springs
Valve clearances and adjustment
Checking and correcting valve condition

Camshaft and Timing

Camshaft removal and installation
Camshaft inspection
Camshaft bearings
Timing gears
Valve timing
Timing marks and alignment

Engine Lubrication

Engine lubrication system
Oil pump removal and servicing
Oil pressure information
Oil passages
Lubrication-system inspection and maintenance

Engine Cooling

Cooling-system servicing
Water pump
Thermostat
Fan and drive belt
Cooling passages
Fault finding and remedies for overheating and cooling problems

Engine Reassembly

Preparing parts for assembly
Installing crankshaft and bearings
Installing pistons and connecting rods
Camshaft and timing installation
Cylinder head installation
Final engine assembly
Tightening sequences and settings
Final checks and adjustments

Fault Finding and Remedies

Poor engine performance
Difficult starting
Excessive oil consumption
Low oil pressure
Engine overheating
Abnormal engine noises
Compression problems
Valve-related problems
Lubrication and cooling problems

Please Note:
This manual specifically covers the Dodge/Chrysler 251 (250.6 CID) 25-inch Straight 6 engine block. It does not cover engines using the smaller 23-inch block.

File Format: PDF

Language: English

Print: Print the complete manual or just the pages you require

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