Sealing rings
All engines systematically used sealing rings of a new type with an additional edge, protecting against dust getting into the seal itself. At the same time, the chamfers of the journals were reduced at the ends of the crankshaft and intermediate shafts.
Caution! If it is necessary to remove the old type sealing ring during installation, it must be replaced with a new type sealing ring. PULLEYS
Since May 1983, two types of crankshaft pulleys have been used in ONS engines: cast iron or forged steel.
The pulleys are distinguished by symbols used to set the ignition timing:
- on steel pulleys, the timing marks cover angles from 4° ATDC to 12° BTDC, and the digital markings are located every 4°;
- on cast iron pulleys the installation marks cover angles: from 0° (TDC) to 16° before TDC and they are dashes (there are no digital designations); every 4° the designation line is deeper than the neighboring ones.
(The original text is provided on an online resource: fordbook.ru)