Engine Mechanical - General Information - 2.0L (Lf) & 2.3L (L3): Other Mazda MX-5 NC

Range of Topics

1. This service information contains procedures for performing all required service operations. The procedures are divided into the following five basic operations: Removal/Installation Disassembly/Assembly Replacement Inspection Adjustment
2. Simple operations which can be performed easily just by looking at the vehicle (i.e., removal/installation of parts, jacking, vehicle lifting, cleaning of parts, and visual inspection) have been omitted.

Repair procedure

1. Most repair operations begin with an overview illustration. It identifies the components, shows how the parts fit together, and describes visual part inspection. However, only removal/installation procedures that need to be performed methodically have written instructions.
2. Expendable parts, tightening torques, and symbols for oil, grease, and sealant are shown in the overview illustration. In addition, symbols indicating parts requiring the use of special service tools or equivalent are also shown.
3. Procedure steps are numbered and the part that is the main point of that procedure is shown in the illustration with the corresponding number. Occasionally, there are important points or additional information concerning a procedure. Refer to this information when servicing the related part.

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Symbols

1. There are eight symbols indicating oil, grease, fluids, sealant, and the use of SST or equivalent. These symbols show application points or use of these materials during service.

SYMBOL DESCRIPTION Symbol Meaning Kind Apply oil New appropriate engine oil or gear oil Apply brake fluid New appropriate brake fluid Apply automatic transaxle/transmission fluid New appropriate automatic transaxle/transmission fluid Apply grease Appropriate grease Apply sealant Appropriate sealant Apply petroleum jelly Appropriate petroleum jelly Replace part O-ring, gasket, etc. Use SST or equivalent Appropriate tools

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Advisory Messages

1. You will find several Warnings, Cautions, Notes, Specifications and Upper and Lower Limits .

Note. A Note provides added information that will help you to complete a particular procedure.

Upper and lower limits

1. The values indicate the upper and lower limits that must not be exceeded when performing inspections or adjustments.

UNITS

UNITS DESCRIPTION

Conversion to SI Units (System International d'Unites)

1. All numerical values in the service information are based on SI units. Numbers shown in conventional units are converted from these values.

Rounding Off

1. Converted values are rounded off to the same number of places as the SI unit value. For example, if the SI unit value is 17.2 and the value after conversion is 37.84, the converted value will be rounded off to 37.8.

1. When the data indicates upper and lower limits, the converted values are rounded down if the SI unit value is an upper limit and rounded up if the SI unit value is a lower limit. Therefore, converted values for the same SI unit value may differ after conversion. For example, consider 2.7 kgf/cm 2 in the following specifications: 210-260 kPa {2.1-2.7 kgf/cm 2 , 30-38 psi} 270-310 kPa {2.7-3.2 kgf/cm 2 , 39-45 psi}
2. The actual converted values for 2.7 kgf/cm 2 are 264 kPa and 38.4 psi. In the first specification, 2.7 is used as an upper limit, so the converted values are rounded down to 260 and 38. In the second specification, 2.7 is used as a lower limit, so the converted values are rounded up to 270 and 39.

Preparation of Tools and Measuring Equipment

1. Be sure that all necessary tools and measuring equipment are available before starting any work.

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Special Service Tools

1. Use special service tools or equivalent when they are required.

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Arrangement of Parts

1. All disassembled parts should be carefully arranged for reassembly.
2. Be sure to separate or otherwise identify the parts to be replaced from those that will be reused.

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Cleaning of Parts

1. All parts to be reused should be carefully and thoroughly cleaned in the appropriate method. WARNING: Using compressed air can cause dirt and other particles to fly out causing injury to the eyes. Wear protective eye wear whenever using compressed air.

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1. Standard values, such as torques and certain adjustments, must be strictly observed in the reassembly of all parts.
2. If removed, the following parts should be replaced with new ones: Oil seals Gaskets O-rings Lockwashers Cotter pins Nylon nuts
3. Depending on location: Sealant and gaskets, or both, should be applied to specified locations. When sealant is applied, parts should be installed before sealant hardens to prevent leakage. Oil should be applied to the moving components of parts. Specified oil or grease should be applied at the prescribed locations (such as oil seals) before reassembly.

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Rubber Parts and Tubing

1. Prevent gasoline or oil from getting on rubber parts or tubing.

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Hose Clamps

1. When reinstalling, position the hose clamp in the original location on the hose and squeeze the clamp lightly with large pliers to ensure a good fit.

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Vise

1. When using a vise, put protective plates in the jaws of the vise to prevent damage to parts.

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1. When disconnecting connector, grasp the connectors, not the wires.
2. Connectors can be disconnected by pressing or pulling the lock lever as shown.

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Locking connector

1. When locking connectors, listen for a click indicating they are securely locked.

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1. When a tester is used to inspect for continuity or measuring voltage, insert the tester probe from the wiring harness side.
2. Inspect the terminals of waterproof connectors from the connector side since they cannot be accessed from the wiring harness side. CAUTION: To prevent damage to the terminal, wrap a thin wire around the tester probe before inserting into terminal.

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SAE STANDARDS

1. Following is a comparison of the previous standard and the new standard.

SAE STANDARDS