5.7.8. Replacement of laying of a final collector

Between flanges of a head of the block of cylinders and a final collector the sealing laying made of the pressed asbestos leaf reinforced by steel is established. At violation of tightness of this laying there is a break outside of the fulfilled gases which is followed by a characteristic sharp sound (the collector "secht"). If it is not possible to eliminate malfunction with tightening of fastening of a final collector, replace laying.

You will need a face head "on 12".

NOTE When replacing laying of a final collector it is possible not to disconnect a flange of a reception pipe from a collector. There is enough, having turned off nuts of fastening of a collector, to remove it from hairpins of a head of the block and to take away from a head so as far as flexibility of system of release allows. Through the formed gap it is possible to take out laying of a collector.

Fig. 5.6. Sequence of an otvorachivaniye of nuts of fastening of a final collector

1. Remove the thermoscreen of a final collector (see. "Removal and installation of thermoscreens").	2. Turn off eight nuts of fastening of a final collector in the sequence shown in fig. 5.6.

3. Remove a final collector from hairpins …	4. … and the laying established under it.

5. Carefully clear privalochny surfaces of a head of the block and a final collector of the remains of old laying and a deposit.

6. Establish new laying and all removed details in the sequence, the return to removal.

7. Tighten nuts of fastening of a final collector in the sequence, return shown in fig. 5.6, the moment given in the appendix 1.

GOOD ADVICE In order to avoid burning of laying and for increase in its tightness we recommend to grease before installation of laying it on both sides a thin layer of graphitic lubricant. Grease hairpins of a head of the block of cylinders with graphitic lubricant.