Yaroslavl Engine Plant YMZ-536, Руководство по эксплуатации

Страница: 67 / 168

67
ACCESSORY DRIVE BELTS
Accessories located in the front part of the engine are driven by
poly-V belts.
The engine package comes in three options:
1.
Water pump, fan and generator (Fig. 17).
Fig. 17 Accessory drive belts (first option):
1 – crankshaft pulley and damper; 2 – tension roller;
3 – water pump pulley; 4 – belt; 5 – fan drive pulley;
6 – tension roller; 7 – belt; 8 – generator pulley
2. Water pump, fan, generator and AC compressor (Fig. 17a).
3. Water pump and generator (Fig. 17b).
In the first two options, the pulley on the crankshaft nose drives
the fan and the water pump. The crankshaft pulley is made as a single
piece with the torsional vibration damper.
The fan pulley second belt drives the generator (Fig. 17), or the
generator and the AC compressor simultaneously (Fig. 17a).