Description of the design of the K4J engine Pic. 5.4. Engine K4J: 1 - exhaust camshaft; 2 - exhaust valve; 3 - intake camshaft; 4 - inlet valve; 5 - hydraulic gap compensator; b - rocker arms; 7 - valve springs; 8 - cylinder head cover; 9 - camshaft gear; 10 -...
General characteristics of the K4J engine Engine - K4J Engine displacement - 1390 cm3 3 Cylinder diameter - 79.5 mm Piston stroke - 70 mm Compression ratio - 10/1 The order of operation of the cylinders is 1-3-4-2 Engine Flush Precautions 1. Protect the timing...
Description of the design of the K7J engine K7J engine (lengthwise cut): 1 - crankshaft; 2 - cover of the main bearing of the crankshaft; 3 - an asterisk of a chain of a drive of the oil pump; 4 - auxiliary drive belt pulley; 5 - toothed pulley of the crankshaft;...
Preliminary operations before removing and repairing the engine Remove various parts (see pictures 1-7). 1. Turn the wrench to the left to loosen the belt tension. Lock the idler pulley with a 6mm hex socket wrench (1). Remove the accessory drive belt. Picture 1. 2. Disconnect the...
Removal and installation of the engine It is recommended to remove the power unit down together with the subframe, after which, if necessary, you can disconnect the subframe and gearbox. Removing install the car on a flyover or lift; disconnect the wires...
Engine disassembly and repair Before disassembly, all auxiliary units and components are removed from the engine, and only then is it completely disassembled. The procedure for removing auxiliary nodes is approximately the following: air...
Engine assembly Installation of nozzles for cooling the piston bottoms 1. Install the plate on the block (2) accessories Mot. 1494 without tightening the two mounting bolts (1). 2. To center the plate, install the jig (3) into the...
Removing the cylinder head The cylinder head is aluminum with two camshafts and 16 valves. The camshafts rotate in six plain bearings. The cylinder head cover is used as the upper bearing caps. The camshafts are driven from the crankshaft...
Installing the cylinder head turn the crankshaft pulley bolt clockwise with a wrench or head so that the pistons are approximately in the middle of their stroke to prevent valve failure; lay a new gasket on the cylinder block; if the lower part of...
Engine cylinder head repair To disassemble the cylinder head, a number of special tools will be required, repair is associated with complex procedures, therefore, when starting to repair, correctly assess your capabilities. Disassembly order:...
Toothed belt replacement (timing belt) Figure 3.35. hole plug (arrow) for screwing the retainer into the cylinder block To carry out these operations, it is required to install the piston of the first cylinder (flywheel side) to top dead center (TDC) end of...
Removing the engine oil pan The process of removing and installing the engine oil pan is described in relation to the engine installed on the vehicle. Removing disconnect the negative cable from the battery; apply the parking brake, raise the...
Installing the engine oil pan Installation thoroughly wash the inside of the sump from oil deposits. Clean the mating surfaces of the sump and cylinder block from gasket residues; Figure 3.48. Applying sealant at points A when installing the engine...
Engine lubrication system — design description Lubrication system diagram (lengthwise cut) Lubrication system diagram (cross section) The engine lubrication system is forced under pressure. The gear type oil pump is located at the bottom of the crankcase and is...
Removal and installation of the engine oil pump Removing remove the engine oil pan; Figure 3.51. Removing the anti-foam plate bolts unscrew the pump mounting bolts and the anti-foaming plate mounting bolts in the engine crankcase (Figure 3.51); remove the anti-foam...
Connecting rod and piston group of the engine — removal After removing the cylinder head, sump and oil pump from the engine, proceed to remove the connecting rod and piston group, which includes pistons complete with rings, piston pins and connecting rods complete with...
Connecting rod and piston group of the engine — inspection Figure 3.55. Removing piston rings with a feeler gauge Clean the pistons and connecting rods from dirt and carbon deposits. Using two or three flat feeler gauges, remove the rings from the pistons up (towards the bottom...
Connecting rod and piston group of the engine — assembly and disassembly Assembly Assembly order: Figure 3.58. Piston ring profiles Figure 3.59. The location of the locks of the piston rings at an angle of 120°relative to each other install rings on the pistons - put them on through the...
Engine crankshaft — removal Before removing the crankshaft, remove the crankshaft sprocket. Figure 3.65. Removal of the case of a forward epiploon of a cranked shaft Loosen the bolts securing the crankshaft front oil seal housing and remove it...
Engine crankshaft — inspection Figure 3.68. Main bearing journal diameter marking on crankshaft counterweight (1) Wash the crankshaft with kerosene or other suitable solvent. Dry it with compressed air if possible. Clean the oil holes with a wire and...
Engine crankshaft — installation place the cylinder block on a clean horizontal surface with the crankcase up; Wipe dry with a lint-free cloth the backs of the earbuds and their beds in the block and covers; Figure 3.70. Renault tool Mot. 1493-01 for...
Engine block — check It is assumed that the unit is removed from the car, all external elements and electrical appliances are dismantled from it (sensors, switches). Operating procedure: remove the remnants of old gaskets and sealant from...
Installation of pistons in the engine block It is assumed that before starting work, the crankshaft is installed in the cylinder block. Operating procedure: Clean the surface of the connecting rod bearings with a lint-free cloth. If new liners are installed, wash...