To units on which reliability and durability of transmission first of all depend, belong a cooler of transmission liquid with the filter and the liquid receiver with the mesh filter of the rough cleaning, located in the pallet from the bottom party of a case. If necessary liquid plum from a transmission case, and also for access to the receiver of liquid and other details of the block of valves the pallet can be removed.

At big run of the car tightness of epiploons of flanges of differential owing to what fall of level of oil in the main transfer is possible can be broken. If necessary it is possible to replace epiploons, without removing a transmission.

Cooler

The cooler represents the two-chamber heat exchanger located in the top part of a case of transmission. On one chamber of a cooler cooling liquid from the engine, and on another — transmission liquid that promotes maintenance of thermal balance circulates. If the temperature of transmission liquid exceeds temperature of cooling liquid, heat is transferred to the last and the temperature of transmission liquid decreases. The cooler does not demand periodic service. Exceptions are leakage of cooling liquid or cooler damage.

Fig. 8.73. The cooler is mounted in the top part of a case of transmission. The shown filter is not established since February of 1991 g: 1–filter; 2–hairpin of fastening of the filter; 3–a bolt with the internal channel; 4, 6 – ring laying; 5–cooler; 7–tube of the index of level of transmission liquid

In need of cooler replacement (fig. 8.73) surely replace sealing ring laying.

Filter updating

The filter of transmission liquid was established on cars 1990 and the beginnings of 1991 of release, but in February, 1991 release of these details stopped. Replacement of elements can be carried out in the specialized centers "Volkswagens" to the period before the next maintenance.

At removal of the filter wrap up rags its basis not to spill liquid on a case. To turn on the filter of transmission liquid follows for a fringing in the top part of the case, or a tape stripper for an otvorachivaniye of the oil filter of the engine. Remove the filter, previously having waited while liquid will not flow down from the filter back in a cooler. Wipe a place of a prileganiye of the filter a pure fabric and wrap a bolt with new ring laying.

Block of valves and liquid receiver

Fig. 8.74. Pallet, receiver, block of valves, socket and laying (view from the lower part of a case: 1–pallet; 2–laying; 3–remote plugs; 4–receiver; 5–elastic consolidation; 6–block of valves; 7–plug; 8–ring laying; 9–socket

The pallet, the receiver of liquid and the block of valves are placed in the lower part of a case of transmission (fig. 8.74) . Before installation of the receiver of liquid previously establish laying in a seat.

At installation of the pallet track correctness of laying of consolidation on a contour round the pallet. Before a tightening of bolts be convinced available remote plugs on all four angular openings.

Epiploon of a flange of a semi-axis

It is possible to replace epiploons of flanges of a semi-axis, without removing transmission. Removal of a flange needs a VW 39 type stripper, приворачивающийся by bolts to a flange and a removing flange at the expense of ongoing effort.

PREVENTION When using a stripper of other design it is necessary to provide its such landing which would exclude damage of a female thread of a leading shaft of differential.

NOTE For access to the left flange it is necessary to dismantle a semi-axis completely.

Replacement of an epiploon of a semi-axis carry out in the following order:

turn out a six-sided key bolts of fastening and disconnect the internal hinge from a flange;

PREVENTION To avoid damage of the external hinge, fix the disconnected part of a semi-axis a hook from a rigid wire;

take a dustproof cover and remove the spring lock ring holding a flange on a shaft. By means of a stripper press a flange from a shaft;

PREVENTION The otvorachivaniye of a bolt of the limiter screwed in a case near a flange is not allowed. The limiter (fig. 8.75) is intended only for providing a preliminary tightness of the bearing.

take an epiploon from a flute by means of a stripper of VW 681 or having accurately hooked it a screw-driver. Try not to scratch thus a flute surface under an epiploon or an adjacent surface;

Fig. 8.75. The new epiploon of a flange of differential is established by means of a special opravka of VW3158 or other adaptation with diameter equal to external diameter of an epiploon. The bolt and the limiter (are specified by an arrow) are intended for providing a preliminary tightness of the bearing. Within this operation the otvorachivaniye and removal of a bolt is not provided

fill a cavity of a new epiploon with universal greasing then press an epiploon into place before complete landing (see fig. 8.75 );

check wear existence on the surface of a flange interfaced to an epiploon. At too big development replace a flange;

Fig. 8.76. Press collars hoses of a supply of cooling liquid to a cooler to avoid its loss. Collars are special adaptations 3094

establish a flange into place by means of the adaptation with a bolt which is rolling in a leading shaft (fig. 8.76) ;

put on a flange shaft a new lock ring from an end face. Without making big effort, establish a ring before dense landing in a shaft flute;

attach the hinge to a semi-axis flange.