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.
Technical specifications
The technical data below is only required to check the technical condition of the parts in the repair procedures described below. Engine capacity 1.6 l 1598 cm³ 1.8 l...
The technical data below is only required to check the technical condition of the parts in the repair procedures described below. Engine capacity 1.6 l 1598 cm³ 1.8 l...
Repair work without removing 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 a conclusion about the advisability of an engine overhaul, since it is necessary to rely on a number of indicators. High mileage is not...
It is not always easy to come to a conclusion about the advisability of an engine overhaul, since it is necessary to rely on a number of indicators. High mileage is not...
Alternatives to engine overhaul
When carrying out major repairs yourself, various options are possible. The decision to replace the cylinder block, connecting rod-piston group and crankshaft depends on...
When carrying out major repairs yourself, various options are possible. The decision to replace the cylinder block, connecting rod-piston group and crankshaft depends on...
Engine Removal — methods and safety precautions
If a decision has been made to dismantle the engine for major repairs or repairs of major components, then certain preparatory measures must be carried out. It is...
If a decision has been made to dismantle the engine for major repairs or repairs of major components, then certain preparatory measures must be carried out. It is...
Engine disassembly sequence
The easiest way to disassemble the engine and perform all types of work is on a portable stand. Before mounting the engine on the stand, it is necessary to remove the...
The easiest way to disassemble the engine and perform all types of work is on a portable stand. Before mounting the engine on the stand, it is necessary to remove the...
Checking the compression in the engine cylinders
Checking with a vacuum gauge Connect the meter to the intake manifold. Warm up the engine and let it idle. If the engine is in good condition, the gauge should read...
Checking with a vacuum gauge Connect the meter to the intake manifold. Warm up the engine and let it idle. If the engine is in good condition, the gauge should read...
Removal and installation 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 lift. 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 lift. You will need an...
Preparing for engine overhaul
Before overhauling the engine, you need to check whether you have all the necessary tools, whether you have access to special equipment, and whether you have enough...
Before overhauling the engine, you need to check whether you have all the necessary tools, whether you have access to special equipment, and whether you have enough...
Engine overhaul
Bottom section of a 4-cylinder engine 1. Crankshaft sprocket; 2. Front cover (oil pump housing); 3. Rear oil seal housing; 4. Back cover; 5. Oil pan; 6. Oil intake pipe...
Bottom section of a 4-cylinder engine 1. Crankshaft sprocket; 2. Front cover (oil pump housing); 3. Rear oil seal housing; 4. Back cover; 5. Oil pan; 6. Oil intake pipe...
Overhaul and inspection of the cylinder head
Bulkhead 1. Remove the camshafts and valve adjusters. 2. Using a special tool, compress the valve spring. 3. Remove the valve stem seals. 4. Remove the plate, spring and...
Bulkhead 1. Remove the camshafts and valve adjusters. 2. Using a special tool, compress the valve spring. 3. Remove the valve stem seals. 4. Remove the plate, spring and...
Valve repair
Due to the complexity of the work and the need for specialized tools and equipment, repair of valves, seats, and guide bushings is best left to an experienced...
Due to the complexity of the work and the need for specialized tools and equipment, repair of valves, seats, and guide bushings is best left to an experienced...
Cylinder head assembly
Before starting assembly, it is necessary to ensure that the cylinder head is clean, regardless of whether this part was repaired in a car service workshop or not. If...
Before starting assembly, it is necessary to ensure that the cylinder head is clean, regardless of whether this part was repaired in a car service workshop or not. If...
Removal pistons and connecting rods
1. Using a special tool, remove the ledge at the top of the cylinder caused by wear and combustion deposits. 2. Turn the engine over with the crankshaft facing up. 3....
1. Using a special tool, remove the ledge at the top of the cylinder caused by wear and combustion deposits. 2. Turn the engine over with the crankshaft facing up. 3....
Removal the crankshaft
1. Before removing the crankshaft, measure its free play using a special device or a feeler gauge near the thrust bearing. If the clearance is greater than required,...
1. Before removing the crankshaft, measure its free play using a special device or a feeler gauge near the thrust bearing. If the clearance is greater than required,...
Checking and cleaning the cylinder block
Examination 1. Inspect the block for cracks and signs of corrosion or rust. Inspect the block hole threads. If defects are detected, the unit must be repaired or...
Examination 1. Inspect the block for cracks and signs of corrosion or rust. Inspect the block hole threads. If defects are detected, the unit must be repaired or...
Cylinder honing
1. Clean the cylinder block thoroughly, making sure again that the flange on the top edge of the cylinder is completely removed. 2. Visually check the block for cracks...
1. Clean the cylinder block thoroughly, making sure again that the flange on the top edge of the cylinder is completely removed. 2. Visually check the block for cracks...
Checking pistons and connecting rods
Before checking, the connecting rods and pistons should be cleaned and the old rings should be removed from the piston. Caution! Old piston rings must always be replaced...
Before checking, the connecting rods and pistons should be cleaned and the old rings should be removed from the piston. Caution! Old piston rings must always be replaced...
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 any...
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 any...
Checking main and connecting rod bearings
Causes of bearing wear 1. Reduction of the tensile strength of the metal; jagged scratches 2. Incorrectly planted; bright (polished) stripes 3. Scratched with dirt; dirt...
Causes of bearing wear 1. Reduction of the tensile strength of the metal; jagged scratches 2. Incorrectly planted; bright (polished) stripes 3. Scratched with dirt; dirt...
Engine assembly procedure
Before beginning assembly, prepare all necessary new parts, gaskets and seals, as well as the following tools and equipment: standard set of tools; torque wrench with...
Before beginning assembly, prepare all necessary new parts, gaskets and seals, as well as the following tools and equipment: standard set of tools; torque wrench with...
Installing piston rings
Before installing new piston rings, you need to check the gap in their joints. It is assumed that the clearance between the ring and the groove pad has already been...
Before installing new piston rings, you need to check the gap in their joints. It is assumed that the clearance between the ring and the groove pad has already been...
Installing the crankshaft
Checking the lubrication clearance of the main bearings 1. Install new main bearing shells. 2. To measure the lubrication gap, you can use an internal micrometer or...
Checking the lubrication clearance of the main bearings 1. Install new main bearing shells. 2. To measure the lubrication gap, you can use an internal micrometer or...
Installing the rear crankshaft oil seal
1. Knock the old seal out of the casing. 2. Lightly lubricate the outer surface of the oil seal with assembly oil or engine oil, install the oil seal into the bore of...
1. Knock the old seal out of the casing. 2. Lightly lubricate the outer surface of the oil seal with assembly oil or engine oil, install the oil seal into the bore of...
Installing pistons and connecting rods
Checking the lubrication clearance of connecting rod bearings 1. Clean the upper connecting rod bearing shell and install it on the connecting rod. The lubrication holes...
Checking the lubrication clearance of connecting rod bearings 1. Clean the upper connecting rod bearing shell and install it on the connecting rod. The lubrication holes...
Starting the engine after repair and running-in
After completing 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 the...
After completing 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 the...
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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