Renault Megane, Scenic

Since 1996 of release

Repair and car operation

Check of a working backlash of radical bearings and installation коленвала

Before installation коленвала and radical bearings on petrol engines E7J, F3R and F7R and on all diesel engines, be defined, what hermetic will use at installation of a cover of the radical bearing №1. If it will be used бутиловое consolidation, it is necessary to define a correct thickness. For this purpose, arrange a bearing cover on a place and fix its two bolts.

Insert a drill or a pin of suitable diameter into a flute of lateral consolidation (address to an accompanying illustration). This diameter also will be the size of a flute of lateral consolidation. If it less or is equal 5 mm, it is necessary to use lateral consolidation by thickness of 5.10 mm.

If the size is more 5 mm, lateral consolidation by thickness of 5.4 mm is required. Pay attention that silicone hermetic is used instead of lateral consolidations only at engine assemblage at factory.

CHECK OF THE WORKING BACKLASH OF THE RADICAL BEARING

1. Clear an underside of loose leaves and basic surfaces of loose leaves in the block of cylinders and in covers. 2. Insert loose leaves into covers, watching that the uvula on the loose leaf has entered in dredging in a cover. Pay attention to following paragraphs. a) On all engines except К7М, in covers loose leaves without lubricant apertures are established. b) On engine K7M, in covers of radical bearings 2 and 4 loose leaves with flutes, and in 1 covers, 3 and 5 - loose leaves without flutes (address to an accompanying illustration) are established. 3a. Insert loose leaves into seats in the block of cylinders. Notice following paragraphs. a) On all engines except К7М, in the block loose leaves with lubricant apertures/flutes are established. On engine E7J, the top loose leaf of the radical bearing №5 differs from the others, in it there is a lubricant facet of a gear wheel of the oil pump which should be turned to приводному to a belt (address to an accompanying illustration). 3b. b) on engine K7M, in covers of radical bearings 2 and 4 loose leaves with flutes, and in 1 covers, 3 and 5 - loose leaves without flutes (address to an accompanying illustration) are established. On all engines if old loose leaves are used, they should be established on the places in the block and in covers. 4. Before to finalise коленвал, check up a working backlash of radical bearings; it can be made one of two ways. The first method (internal micrometers or a calliper be required) - establish covers of radical bearings on the block of cylinders with loose leaves in working position. Tighten bolts of fastening of covers the regulated moment of an inhaling and measure diameter of the aperture formed in each pair of loose leaves (internal diameter of the bearing). Measure diameter of each neck коленвала and subtract it from internal diameter of the bearing. The received result is equal to a working backlash of the radical bearing. The second (and more exact) the method consists in use of special tool Plastigauge. The tool consists of a scale and plastic threads of round section. Procedure with use Plastiquage is carried out as follows. 5. Establish the top loose leaves of radical bearings into position and accurately lower in картер коленвал (address to an accompanying illustration). Do not use some any greasing, a neck коленвала and loose leaves should be absolutely pure and dry. 6. Cut off some pieces of thread Plastigauge of the suitable size (they should be a bit shorter than width of radical bearings) and place on a piece on each neck (address to an accompanying illustration). 7. Establish covers with loose leaves on the places. Watch to displacing Plastigauge. 8. Since the central radical bearing, tighten bolts of fastening of covers of radical bearings the effort resulted in Specifications, and tighten on the corner (engine K7M) specified in Specifications. Do not turn коленвал during this action. 9. Turn out bolts and accurately remove covers of radical bearings. 10. Compare width of a deformed thread to a scale. The working backlash is specified on a scale (address to an accompanying illustration). Compare the received result to the data resulted in Specifications. 11. If a backlash loose leaves of the improper size are too great, established or they are worn excessively out (if old loose leaves) are repeatedly used. Before to decide that коленвал it is worn out, be convinced that between loose leaves of the bearing and covers or the block at backlash measurement the dirt or oil have not got. If one end of thread Plastigauge is wider than another, the neck коленвала is probably shown on a cone. 12. Cautiously clean off all traces of material Plastigauge with коленвала and loose leaves.

DEFINITIVE INSTALLATION

1. Accurately lift коленвал from the block of cylinders. 2a. Using a few greasings, fix persistent washers from each party of the central radical bearing (engines E7J and К7М) or the radical bearing №2 (all other engines). 2b. Lubricant flutes on persistent washers should be turned outside to counterbalances коленвала (address to illustrations). 3. Plentifully grease each loose leaf in the block of cylinders and lower коленвал on a place (address to an accompanying illustration). 4a. Grease loose leaves, then establish covers of bearings on the places (address to illustrations). Pay attention to following paragraphs. a) On engine E7J, apply a thin film hermetic on external corners of a cover of the radical bearing №1. 4b. b) on engine K7M, apply a thin film hermetic on all contact surfaces of a cover of the radical bearing №1 (address to illustrations). 4c. At installation бутилового consolidations, have them so that flutes have been turned outside in the bottom part approximately on 0.2 mm (to картеру). 4d. Grease consolidations and put a hermetic small amount on corners of the basis of a cover. 4e. At cover installation use bolts as directing, then firmly press a cover (address to an accompanying illustration). 4f. d) if at installation of a cover of the radical bearing №1 it is used silicone hermetic, do not press it at once, and leave lifted so that the first few carvings of bolts of the radical bearing could be entered only. 4g. Now enter hermetic into each of flutes of the party of a cover while it does not insert into a place below a cover and completely fills flutes. 5a. Establish bolts of fastening of covers of radical bearings and tighten their effort gradually resulted in Specifications. 5b. Tighten them on the specified corner on engine K7M. (Address to illustrations). 6. Where are established бутиловые consolidations, cut off coming out ends. 7. Where for cover consolidation silicone hermetic is used, mix it with a hardener as it is described in the instruction. Enter a mix into cover flutes, completely having filled them. Wait some minutes, then cut off superfluous hermetic from a socket surface, inside and outside of the block of cylinders. 8. Check up, that коленвал freely rotated. 9. Check up an axial backlash коленвала, address to Section Removal and pallet installation картера (only for petrol engines of series К7М with the aluminium pallet). 10. Establish a new epiploon коленвала from outside a gear belt in a casing, and then establish a casing. 11. Establish a new epiploon коленвала from outside a disk flywheel/privodnogo. 12. Where it is applied, establish the bottom internal cover of a gear belt. 13. In summary, establish assemblages of pistons/privodnoj a disk, the oil pump and a gear pulley коленвала, and in summary establish new gear приводной a belt.