Engine overhaul Renault Megane 1

Engine removal and overhaul procedures
This Chapter describes the procedures for engine/transmission removal and engine overhaul. All instructions provided assume that the engine has been removed from the vehicle. Information regarding engine repairs in the...

Engine Removal Methods and Precautions
If the engine needs to be removed for rebuilding, there are a few preliminary steps to take. The choice of location for the work is extremely important. You will need sufficient work space, as well as a garage where you...

Removal and installation of a petrol engine and manual transmission
Models with 1.4 and 1.6 l engines Note: The engine and gearbox are removed from the engine compartment upwards and then separated. Removal 1. Disconnect the ground cable from the battery. Warning: If the car radio in...

Removal and installation of gasoline engine and automatic transmission
Note: Renault recommends that the engine and transmission be lowered from the engine compartment. Removal 1. Disconnect the ground cable from the battery (refer to Chapter Engine electrical equipment ). Warning: If the...

Removal and installation of diesel engine and gearbox
Note: Renault recommends that the engine and transmission be lowered from the engine compartment. Removal 1. Disconnect the ground cable from the battery (refer to Chapter Engine electrical equipment for Scenic models)....

Disassembly sequence — engine overhaul
The work will be much easier if you mount the engine on a special portable stand. Before installing the engine on the stand, remove the flywheel/drive plate so that the stand bolts can be screwed into the cylinder...

Disassembling the cylinder head
Note: Given that special tools are required to remove and inspect the head, it is recommended that you purchase a new or reconditioned component from an engine rebuilder. This may ultimately be cheaper than rebuilding...

Cleaning, inspection and maintenance of the cylinder head and valves
A complete cleaning of the cylinder head components and valves followed by a detailed inspection will allow you to determine what procedures need to be performed during an engine overhaul. Cleaning 1. Remove all traces...

Cylinder head assembly
1. On F8Q engines, if the swirl chambers have been removed, reinstall them in their original locations. 2a. Lubricate the valve stem seals, then install them into the cylinder head. 2b. By pushing them in with a...

Removal, condition check and installation of the flywheel and drive disk
Removal 1. Remove the transmission (see above in Sections Removal and installation of a petrol engine and manual transmission , Removal and installation of gasoline engine and automatic transmission or Removal and...

Replacing the left (flywheel side) crankshaft oil seal
1. Remove the flywheel/drive plate assembly. 2. Using a small screwdriver, remove the old seal from its socket (try not to damage the surface of the crankshaft journal). Alternatively, drill two small holes in the end...

Removal and installation the oil pan (K7M with aluminum pan)
Removal 1. Remove the engine (see section Removal and installation of a petrol engine and manual transmission ), then drain the engine oil from it. 2. Loosen and remove the flywheel/engine to transmission reinforcement...

Removal and installation the intermediate shaft
Note: The following procedure applies only to F3R 750, F3R 751, F3R 710 gasoline engines and F8Q 620, F8Q 784 F9Q 730 diesel engines. Note: Installation will require a new timing belt, intermediate shaft seal, and...

Removal the piston and connecting rod assembly
1. With the cylinder head, sump and oil pump removed, proceed as follows: On the E7J engine, make sure the sleeve clamps are installed. 2. Turn the crankshaft so that connecting rod #1 is at BDC. If there is no number...

Removal the crankshaft
1. Remove the timing belt, crankshaft timing pulley, oil pump and flywheel/drive plate. The pistons/connecting rods should be free of the crankshaft journals, but it is not necessary to remove them completely from the...

Cleaning and inspection of the cylinder block/crankcase and cylinders
Cleaning 1. For complete cleaning, it is necessary to remove the plugs. Drill a small hole in them, then screw in a screw and remove the plugs using pliers or a sliding hammer. Remove the external components and sensors...

Inspection and assembly of piston and connecting rod assemblies
Inspection 1. Before starting the inspection, it is necessary to clean the piston/connecting rod assemblies and remove the piston rings from them. 2. Carefully pry the rings apart and remove them from the piston crown....

Inspection of the crankshaft
1. Clean the crankshaft and dry it with compressed air if possible 2. Check the condition of the main and connecting rod bearing journals. 3. If the crankshaft has been reground, check that there are no burrs left...

Inspection of main bearings
A - Scratched by foreign particles - grains are visible, embedded in the working layer of the liner; B - Lack of oil - top layer is worn off; C - The inserts are incorrectly positioned during installation - there are...

Assembly sequence — engine overhaul
Before you begin assembly, make sure you have purchased all the necessary parts and prepared all the tools. Read the description of all the procedures to fully familiarize yourself with the upcoming work and to make...

Checking the main bearing clearance and installing the crankshaft
Before installing the crankshaft and main bearings on E7J, F3R, and F7R gasoline engines and all diesel engines, determine which sealant will be used when installing the main bearing cap #1. If butyl sealant is to be...

Checking the connecting rod bearing clearance and installing the piston/connecting rod assembly
1. Clean the backs of the bearing shells and the bearing surfaces in the connecting rods and caps. If new bearing shells are being installed, remove the protective grease with kerosene. Wipe the bearing shells with a...

Starting the engine after overhaul
Recheck the engine oil and coolant levels. Make sure all wires and hoses are connected and that no tools or rags are left in the engine compartment. Petrol models 1. Remove the spark plugs, disable the engine management...

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Other sections on other Renault models

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➽ Body and interior: Restoration and repair Renault Symbol 1 (1999-2008, petrol)

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Megan 2 (2002-2009, petrol)