Engine overhaul 1.6 and 1.8 l Mazda 626 (5)
This section covers engine overhaul operations, including cylinder head and cylinder block parts. The chapter includes both recommendations concerning both the organization and preparation of work on the overhaul of the engine, the purchase of spare parts, as well as a detailed description of the procedures for dismantling and installing engine parts, as well as methods for checking the technical condition of parts.
Specifications
The following technical data is only needed to check the technical condition of the parts in the following repair procedures. Engine capacity 1.6 l 1598 cm 3 1.8 l 1840...
The following technical data is only needed to check the technical condition of the parts in the following repair procedures. Engine capacity 1.6 l 1598 cm 3 1.8 l 1840...
Repair work without dismantling the engine from the car
Many basic repairs can be performed without removing the engine from the vehicle. Before starting any work, it is highly advisable to flush the engine compartment and...
Many basic repairs can be performed without removing the engine from the vehicle. Before starting any work, it is highly advisable to flush the engine compartment and...
General notes on engine overhaul
It is not always easy to come to the conclusion about the feasibility of overhauling the engine, since it is necessary to be based on a number of indicators. High...
It is not always easy to come to the conclusion about the feasibility of overhauling the engine, since it is necessary to be based on a number of indicators. High...
Engine Overhaul Alternatives
There are a number of options available for a major overhaul. The decision to replace the cylinder block, connecting rod and piston group and crankshaft depends on a...
There are a number of options available for a major overhaul. The decision to replace the cylinder block, connecting rod and piston group and crankshaft depends on a...
Dismantling the engine — methods and safety precautions
If it was decided to dismantle the engine for a major overhaul, or repair of the main components, then certain preparatory measures must be taken. It is extremely...
If it was decided to dismantle the engine for a major overhaul, or repair of the main components, then certain preparatory measures must be taken. It is extremely...
Engine disassembly sequence
It is easiest to disassemble the engine and perform all types of work on a portable stand. Before mounting the engine on the stand, it is necessary to remove the...
It is easiest to disassemble the engine and perform all types of work on a portable stand. Before mounting the engine on the stand, it is necessary to remove the...
Checking compression in the engine cylinders
Checking with a vacuum gauge Connect a gauge to the intake manifold. Warm up the engine and leave it to idle. If the engine is good, the meter should read 17-22 inches...
Checking with a vacuum gauge Connect a gauge to the intake manifold. Warm up the engine and leave it to idle. If the engine is good, the meter should read 17-22 inches...
Removal and installation of the engine
Method and Precautions If you are removing the engine for the first time, you need to prepare a room for this, preferably equipped with a hoist. You will need an...
Method and Precautions If you are removing the engine for the first time, you need to prepare a room for this, preferably equipped with a hoist. You will need an...
Preparing for an engine overhaul
Before overhauling the engine, it is necessary to check whether you have all the necessary tools, whether you have access to special equipment and whether you have...
Before overhauling the engine, it is necessary to check whether you have all the necessary tools, whether you have access to special equipment and whether you have...
Engine overhaul
Details of the lower part of a 4-cylinder engine 1. Crankshaft sprocket; 2. Front cover (oil pump housing); 3. Rear seal housing; 4. Back cover; 5. Oil pan; 6. Oil...
Details of the lower part of a 4-cylinder engine 1. Crankshaft sprocket; 2. Front cover (oil pump housing); 3. Rear seal housing; 4. Back cover; 5. Oil pan; 6. Oil...
Overhaul and check of the cylinder head
Bulkhead 1. Remove camshafts and valve adjusters. 2. Using the special tool, compress the valve spring. 3. Remove the valve taper bushings. 4. Remove the plate, spring...
Bulkhead 1. Remove camshafts and valve adjusters. 2. Using the special tool, compress the valve spring. 3. Remove the valve taper bushings. 4. Remove the plate, spring...
Valve repair
Due to the complexity of the job and the need for special tools and equipment, repairs to valves, seats, and guides are best left to an experienced technician. At home,...
Due to the complexity of the job and the need for special tools and equipment, repairs to valves, seats, and guides are best left to an experienced technician. At home,...
Cylinder head assembly
Before starting assembly, you need to make sure that the head of the block is clean, regardless of whether this part was repaired in a car service workshop or not. If...
Before starting assembly, you need to make sure that the head of the block is clean, regardless of whether this part was repaired in a car service workshop or not. If...
Removing pistons and connecting rods
1. Using a special tool, remove the ledge in the upper part of the cylinder, formed as a result of wear and deposits of combustion products. 2. Turn the engine over with...
1. Using a special tool, remove the ledge in the upper part of the cylinder, formed as a result of wear and deposits of combustion products. 2. Turn the engine over with...
Removing the crankshaft
1. Before removing the crankshaft, measure its free play with a special tool or with a feeler gauge near the thrust bearing. If the clearance is greater than required,...
1. Before removing the crankshaft, measure its free play with a special tool or with a feeler gauge near the thrust bearing. If the clearance is greater than required,...
Checking and cleaning the cylinder block
Examination 1. Inspect the unit for cracks and signs of corrosion or rust. Inspect the threads of the block holes. If defects are found, the unit must be repaired or...
Examination 1. Inspect the unit for cracks and signs of corrosion or rust. Inspect the threads of the block holes. If defects are found, the unit must be repaired or...
Cylinder honing
1. Thoroughly clean the cylinder block, once again make sure that the shoulder on the top edge of the cylinder is completely removed. 2. Visually inspect the block for...
1. Thoroughly clean the cylinder block, once again make sure that the shoulder on the top edge of the cylinder is completely removed. 2. Visually inspect the block for...
Checking pistons and connecting rods
Before checking, the connecting rods and pistons should be cleaned and the old rings removed from the piston. Attention! Old piston rings must always be replaced when...
Before checking, the connecting rods and pistons should be cleaned and the old rings removed from the piston. Attention! Old piston rings must always be replaced when...
Checking the crankshaft
1. Wash the crankshaft with solvent and dry thoroughly. Be sure to clean the oil passages with a stiff brush and flush with a strong stream of solvent. Remove solvent...
1. Wash the crankshaft with solvent and dry thoroughly. Be sure to clean the oil passages with a stiff brush and flush with a strong stream of solvent. Remove solvent...
Inspection of main bearings and connecting rod bearings
Reasons for bearing wear 1. Reducing the tensile strength of the metal; jagged scratches 2. Improperly planted; bright (polished) stripes 3.Scratched by dirt; dirt has...
Reasons for bearing wear 1. Reducing the tensile strength of the metal; jagged scratches 2. Improperly planted; bright (polished) stripes 3.Scratched by dirt; dirt has...
Engine assembly procedure
Before starting assembly, have all necessary new parts, gaskets and seals, as well as the following tools and fixtures: standard set of tools; torque wrench with 1/2'...
Before starting assembly, have all necessary new parts, gaskets and seals, as well as the following tools and fixtures: standard set of tools; torque wrench with 1/2'...
Installation of piston rings
Before installing new piston rings, check the clearance at their joints. It is assumed that the gap between the ring and the seat of the groove has already been checked...
Before installing new piston rings, check the clearance at their joints. It is assumed that the gap between the ring and the seat of the groove has already been checked...
Installing the crankshaft
Checking the lubrication clearance of the main bearings 1. Install new main bearing shells. 2. An internal micrometer or other special device can be used to measure the...
Checking the lubrication clearance of the main bearings 1. Install new main bearing shells. 2. An internal micrometer or other special device can be used to measure the...
Installation of a back epiploon of a cranked shaft
1. Knock out the old seal from the casing. 2. Lightly lubricate the outer surface of the oil seal with assembly oil or engine oil, install the oil seal in the bore of...
1. Knock out the old seal from the casing. 2. Lightly lubricate the outer surface of the oil seal with assembly oil or engine oil, install the oil seal in the bore of...
Installation of pistons and connecting rods
Checking the lubrication clearance of connecting rod bearings 1. Clean the upper connecting rod bearing and install it on the connecting rod. The lubrication holes of...
Checking the lubrication clearance of connecting rod bearings 1. Clean the upper connecting rod bearing and install it on the connecting rod. The lubrication holes of...
Starting the engine after repair and running in
After completing the engine assembly, double check the oil and coolant levels. With the spark plugs removed and the high-voltage wire of the ignition coil grounded, turn...
After completing the engine assembly, double check the oil and coolant levels. With the spark plugs removed and the high-voltage wire of the ignition coil grounded, turn...
This section is available on: russian, bulgarian, belarusian, ukrainian, serbian, croatian, romanian, polish, slovak, hungarian
More sections on repairs of other Mazda models
• Power unit: Engine repair (gasoline) Mazda3 BK (2003-2009)
• Power unit: Engine repair Mazda6 GG (2002-2008)
• Power unit: Engine repair (gasoline) Mazda3 BK (2003-2009)
• Power unit: Engine repair Mazda6 GG (2002-2008)
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- General information
- Introduction to guide
- User manual
- Troubleshooting
- Maintenance
- Power unit
- 4-cylinder engines
- 6-cylinder engines
- Engine overhaul
- Cooling and ventilation
- Power and exhaust systems
- Engine electrics
- Control system
- Transmission
- Mechanical gearbox
- Automatic gearbox
- Clutch and drive shafts
- Chassis
- Brake system
- Car suspension
- Steering
- Body
- Exterior (external elements)
- Interior (internal elements)
- Doors, windows and locks
- Electrical equipment
- Equipment and devices
- Electrical circuits
- General information
- User manual
- Maintenance
- Helpful hints
- Power unit
- Petrol engines 1.6 and 1.8
- Petrol engines 2.0
- 2.5 petrol engines
- Overhaul engines 1.6 and 1.8
- Overhaul engines 2.0 and 2.5
- Diesel engine 2.0
- Engine electrics
- Cooling system
- Air conditioner
- Carburetor Nikki 30/34
- Power system (1.6 and 1.8)
- Power system (2.0 and 2.5)
- Control system
- Transmission
- Mechanical gearbox
- Automatic gearbox
- Clutch and axles
- Chassis
- Brake system
- Suspension and wheels
- Steering
- Body
- Exterior (external elements)
- Interior (internal elements)
- Doors and windows
- Electrical equipment
- Equipment and devices
- Electrical circuits
- General information
- User manual
- Maintenance
- Power unit
- Gasoline engine
- Engine overhaul (gasoline)
- Diesel engine
- Cooling and heating
- Supply system
- Ignition system
- Emission reduction
- Transmission
- Clutch
- Mechanical gearbox
- Automatic gearbox
- Drive shafts
- Chassis
- Brake system
- Suspension and wheels
- Steering
- Body
- Exterior (external elements)
- Interior (internal elements)
- Electrical equipment
- Equipment and devices
- Power devices
- Electrical circuits
- General information
- User manual
- Maintenance
- Troubleshooting
- Late models
- Power unit
- Engine in car
- Engine overhaul
- Cooling and heating system
- Fuel and exhaust system
- Engine electrical system
- Emission control system
- Transmission
- Mechanical gearbox
- Automatic gearbox
- Clutch and drive shafts
- Chassis
- Brake system
- Suspension and wheels
- Steering
- Body
- Exterior (external elements)
- Interior (internal elements)
- Electrical equipment
- Equipment and devices
- Lighting and lamps
- Electrical circuits
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