Repair VW Sharan. Diesel engines: 1,9 l TDI.+ 1. Introduction + 2. Engine VR6 + 3. The two-litre engine (ADY) + 4. System of greasing of the engine + 5. Cooling system + 6. System of injection of fuel of engine VR6 + 7. System Simos of injection of fuel of the 2,0-litre engine + 8. Ignition system + 9. Coupling + 10. A mechanical 5-step transmission + 11. Shaft of a drive of wheels + 12. The steering hydraulic booster + 13. A forward suspension bracket + 14. A back suspension bracket + 15. Brake system + 16. An electric equipment - 17. The diesel engine 17.1. Removal and installation + 17.2. Dismantling and assemblage + 17.3. A head of the block of cylinders + 17.4. Privodnye belts — поликлиновой and gear - 17.5. Shatunno - piston group 17.5.1. Removal and dismantling 17.5.2. Check of pistons and rods 17.5.3. Measurement of a backlash of bearings of a rod 17.5.4. Assemblage of pistons and rods 17.5.5. Installation of pistons and rods + 17.6. An intermediate shaft 17.7. A flywheel + 17.8. A camshaft and a camshaft epiploon + 17.9. A cranked shaft and radical bearings + 17.10. The block of cylinders 17.11. Compression check in engine cylinders 17.12. System of release of the fulfilled gases + 18. System of greasing of the diesel engine + 19. System of cooling of the diesel engine + 20. The power supply system of the diesel engine and turbocharger + Maintenance service card + Specifications and characteristics + Electroschemes |
Folksvagen Sharan/Sharan repair>> The diesel engine>> shatunno - Piston group>> Check of pistons and rods Carefully check up all details. If on them there are teases, scratches or wear tracks it is necessary to replace these details.
Measure a backlash on height between piston rings and flutes by means of measuring щупа (fig. 427). If the backlash компрессионного more than 0,25 mm, or a backlash маслосъемного a ring is more than ring 0,15 mm are worn out either rings, or the piston. Nominal sizes are resulted in the table of admissions and the control.
By turns insert all piston rings, since bottom rather картера into a cylinder aperture. Having turned one of pistons an underside, press through rings approximately on 20 mm downwards. After that they will appear directly in a cylinder aperture.
Insert into a backlash between two ends of a ring measuring щуп to measure a backlash in the lock of a piston ring. On fig. 428 it is shown, properly correctly to make backlash gauging. At компрессионных piston rings the backlash should be equal 0,2—0,4 mm; at маслосъемных rings — 0,25 0,4 mm. The border of deterioration of all rings makes 1,0 mm.
At an insignificant backlash (for example, at new rings which also should be measured) the ends of rings can be ground off a file. For this purpose clamp a file in a vice and grind off about it the ends of rings. At too big thermal backlash the corresponding ring should be replaced.
Check up on deterioration and teases piston fingers and plugs of rods. Also if only one rod has damages it is necessary to replace all detail in gathering. Bolts of bearings of a rod always replace with the new. Check up rods by means of the device for correction of rods on deformation and twisting. The received sizes should be minimum. If you have doubts concerning a condition of rods address on HUNDRED to spend there corresponding measurements. If will drive one rod it is necessary to change all complete set.
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