add to favorites contacts sitemap
REPAIR MAINTENANCE OPERATION OF MOTOR VEHICLES
Volkswagen Polo (from 1994 to 2001, the year of issue)

general info. full specifications. diagnostics. hints. tips. tricks
Volkswagen Polo
Home
 
Volkswagen
Polo
General Information
Engine
Removing and installing engine
Disassembly and assembly of the engine
Dismantling
Assembly
Cylinder head and valves
The pistons and connecting rods
Cylinder block
Crankshaft and main bearings
Timing
Exhaust system (OG)
Greasing system
Cooling
Fuel-injection systems
Ignition system
Coupling
Manual transmission
The drive wheels
A steering without the amplifier
A steering with the hydraulic booster
Front suspension
Rear suspension
Brakes
Electrical
Heating and ventilation system
Automatic Transmission
Applications
 


Hit Counter by Digits


print page printable version

Dismantling



Before starting work, thoroughly clean all exterior surfaces of the engine, after closing all the openings with a clean cloth to prevent dirt from entering the inside of the engine.
Disassembly of the engine described in detail in Sect. 2.3-2.7. Described the work carried out and laden, and dismantled the engine.
If you intend to complete disassembly, you just combine the individual work steps in sequence.
Generally, all moving engine components (pistons, valves, caps, bearings, etc.) Before dismantling shall be marked, at assemblage to establish them in the same place, if you intend to use them again. Items placed in such a way as to prevent any confusion. The valves can be installed in a cut in the bottom of the carton opening, to be able to write a number of their rooms. Fig. 24 shows the placement of the valves removed.

Installation of the valve in the process of dismantling of the engine
Fig. 24. Install the valve in the process of dismantling of the engine




A warning
The support and sealing surfaces in any case can not mark a sharp object, the more they beat the stigma. Many details izgotavleny aluminum, so they should be treated with special care. For the separation of certain parts should be used only hammers with rubber or plastic strikers.

In the absence of the mounting of the stand should make wooden box size required to provide access to the upper and lower parts. Cylinder head, attached to the intake manifold studs, after dismantling can be mounted in a vise.
The cylinder head and the oil pump can be removed by car. You can tighten or replace the timing belt on the engine installed.
When disassembling the motor, proceed as follows:
- Remove all auxiliary engine components: ignition distributor, injection system parts, intake manifold, etc;
- Dismantle the V-ribbed belt, if this was not done;

Details on the front side of the engine
Fig. 25. Details on the front side of the engine: 1 - the top casing of a gear belt; 2 - a gear belt; 3 - bolts 20 Nm; 4 - a protective casing of a gear belt pulley for the pump; 5 - bolt 80 Nm; 6 - a gear pulley of a camshaft; 7, 8 - bolts 10 Nm; 9 - a casing of a gear belt (inside); 10 - O-ring; 11 - the water pump; 12 - belt tensioning device; 13 - nut 20 Nm; 14 - mounting bracket; 15 - a gear pulley of a cranked shaft; 16 - bolt 40 Nm + 90 ?�; 17 - the crankshaft pulley; 18 - bolt 20 Nm; 19 - ribbed belt; 20 - bolt 90 Nm + 120 ?�; 21 - the bottom casing of a gear belt




- Remove the belt pulley of the crankshaft (Fig. 25). To do this, unscrew the bolts from the inside and remove the pulley. Remember, it was adjusted to a pulley. Loosen the screws protective cover of a gear belt, located behind the belt pulley;
- Disconnect units from the engine mounts. If you have an air conditioner he was removed during disassembly of the engine;
- Disconnect the top cover plate and the toothed belt drive pulley above the water pump cover (see. Sect. 2.7.1);
- Remove the sprocket from the crankshaft, keeping the shaft from turning;
- Remove the water pump and oil filter;
- Take out the dipstick;
- Unscrew the screws cylinder head cover and check the seals - even corrupted, it may be useful in the assembly if it applied sealant;
- Evenly unscrew bolts of the cylinder head in the order shown in Fig. 26 (tightening is carried out in reverse order). To do this, use a socket wrench to the head, without which it is possible to damage the hexagon socket head screws, because of which the last in the end did not manage to turn away;

Sequence of loosening bolts of the cylinder head
Fig. 26. Sequence of loosening bolts of the cylinder head




- Remove the cylinder head (Fig. 27) with the intake and exhaust manifold, camshaft and a built-in, etc.

Cylinder Head
Fig. 27. Cylinder head 1 - bolt 10 Nm; 2 - O-ring (always replace); 3 - the cylinder head cover; 4 - the oil filler plug; 5 - cover gasket; 6 - bolt cylinder head; 7 - cylinder head; 8 - cylinder head gasket (different versions)




Subsequent work must be done in accordance with Fig. 28 in the following order:

The cylinder block to the crankshaft
Fig. 28. The cylinder block to the crankshaft 1 - bearing shells number 1, 2, 4 and 5; 2 - bolts of covers of bearings, 65 Nm + 90 ?�; 3 - main bearing caps; 4 - thrust washers; 5 - bearing number 3; 6 - the crankshaft; 7 - bolt 10 Nm; 8 - flywheel bolts, 60 Nm + 90 ?�; 9 - flywheel; 10 - flange with collar; 11 - a lining (always replace); 12 - shims for the cylinder; 13 - Cover the front of the cuff; 14 - a cuff; 15 - sealing plug; 16 - sprocket chain drive oil pump; 17 - oil pump




- Detach the cover 13 from the collar end face of the cylinder;
- Open the engine and remove the oil pan. Remove the gasket;
- Remove the oil pump in accordance with the recommendations of the Div. 3.2.1;

Marking rod and rod cap punch
Fig. 29. Marking of the connecting rod and connecting rod cap punch




- Can be labeled numbers of cylinders on the covers of rods. To do this, apply a center punch mark on the connecting rod and the connecting rod cap. At first crank single label, the second two, etc., as shown in Fig. 29. Bearing caps shoot alternately. Thus the connecting rod must always be at BDC.
- Number of cylinders apply paint or carefully with a sharp object on the upper side of the bottom of the piston in the oil deposit. Push rods with pistons turns up out of the cylinder. Note that the inserts and cover immediately fastened to the respective connecting rods;
- Disconnect the clutch and flywheel of the engine;
- Disconnect the rear cover and remove the cuff;
- Remove the crankshaft (see. Sect. 2.6.1). Bearing caps in this case indicated by numbers (?�� 1 on the side of the pulley, ?�� 5 on the side of the flywheel).
On average, bearing crankshaft thrust washers are installed to adjust the axial play of the crankshaft. Remove them and the mark on the same side, if they are again to be used in the assembly of the engine. The marking shall indicate which rings are at the top and bottom. These designations are applied after removal from the crankcase of the two other rings.




« previos page
Disassembly and assembly of the engine
next page »
Assembly

Copyright © 2010 AutoManuals.biz. Trademarks belong to their respective owners. All rights reserved.