Engine overhaul Mazda 626 (3rd and 4th gen)

General Engine Overhaul Procedure Specifications
Valves and related components Valve bevel angle - 45° Valve seat angle - 45° Valve head thickness: Inlet - 0.5 mm Outlet - 1.0 mm Valve stem diameter: 1.6L and 2.0L...

Repair operations possible on the engine installed in the vehicle
A number of major repairs can be performed without removing the engine from the vehicle. First of all, it is advisable to clean the engine compartment and conduct an...

Engine repair general description
High mileage is not always a reliable indicator of the need for an engine overhaul, while low mileage is not an obstacle to the need for an overhaul. Frequency of...

Engine restoration options
There are many options for engine rebuilding. The decision to replace the engine block, piston/connecting rod assemblies, and crankshaft depends on a number of factors,...

Engine Removal — methods and precautions
If it has been decided that the engine needs to be removed for repair, there are some preliminary steps that need to be taken. It is important to carefully prepare a...

Engine repair — dismantling sequence
1. It is much easier to remove and work on the engine if it is mounted on a portable stand. Before installing the engine on the frame, the flywheel/drive plate must be...

Cylinder head — dismantling
Note: New and remanufactured cylinder heads are commonly sold at auto parts stores. No special tools are required, so you can replace the cylinder head yourself. 1....

Cylinder head — cleaning and inspection
1. When completely cleaning the cylinder head and related valve components, perform a detailed inspection that will allow you to decide what work needs to be done during...

Valves — maintenance
1. Due to the complex nature of the work and the need for specialized tools and equipment, servicing valves, valve seats and valve guides is usually performed by a...

Cylinder head — overhaul
1. Regardless of whether the cylinder head has been repaired or not, clean it thoroughly before installation. 2. If the head was removed to repair the valves and related...

Piston/connecting rod assembly — removal
1. First of all, it is necessary to grind down the protrusion formed by wear at the top of the cylinders. Use a special tool for this, following the manufacturer's...

Cylinder block, crankshaft, bearings and connecting rod parts
Cylinder block, crankshaft, bearings and connecting rod parts 55. Connecting rod cap; 56. Connecting rod bearing; 57. Connecting rod and journal; 58. piston rings; 59....

Crankshaft — removal
1. Before the crankshaft is removed, check the axial clearance. Place the micrometer rod in line with the crankshaft and just touch the end of the crankshaft (see...

Engine block — cleaning
1. Remove the soft plugs from the engine block. To do this, punch them into the block using a hammer and punch, then grab them with large pliers and pull them out...

Engine block — inspection
1. Thoroughly clean the engine block as described in Chapter 13 , and double check to make sure the ridge on the top of each cylinder has been completely removed. 2....

Camshaft — inspection
1. After the camshaft has been removed from the engine, clean it with solvent and dry it, inspect the bearing journals for uneven wear, corrosion or the possibility of...

Piston/connecting rod assembly — inspection
1. Before inspection, the piston/connecting rod assembly must be cleaned and the piston rings removed from the pistons. Note: Always use new piston rings when...

Crankshaft — inspection
1. Clean the crankshaft with solvent and dry it thoroughly. The lubrication holes should also be cleaned (with a stiff brush) and washed with solvent. Remove all traces...

Main and connecting rod bearings — inspection
1. Do not throw away old main and connecting rod bearings after replacing them, their inspection can provide valuable information regarding the condition of the engine....

Piston rings — installation
1. Before installing new piston rings, it is necessary to check the piston ring clearances. It is taken into account that the lateral clearance of the piston ring on the...

Crankshaft — installation and control of main bearing clearance
1. Installing the crankshaft is the first step in engine assembly. 2. Install the engine with the head facing up. 3. Remove the main bearing cap bolts and lift the caps....

Piston/connecting rod assembly — installation and checking of bearing clearance
1. Before installing the piston/connecting rod assemblies, the cylinder walls must be perfectly clean, the top edge of each cylinder must be flared and the crankshaft...

Rear cover and oil seal — installation
1. Lightly lubricate the outer edge of the oil seal with engine assembly oil or clean engine oil and place the oil seal into the hole in the rear cover. Seat the seal...

Engine overhaul — assembly sequence
1. Before starting engine assembly, prepare all necessary replacement components, gaskets and seals, as well as the following: Standard set of tools Torque wrench Piston...

Starting and running-in after overhaul
1. Install the engine in the engine compartment and check the engine oil and coolant levels. 2. Remove the spark plugs from the engine, ground the ignition coil...

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)

Share with friends on social networks:

Link in different formats to this section

TEXTHTMLBB Code

Capella 5 (1991-1997)