Fig. 4-1. Clutch parts:
1 - slave disk;
2 — clutch housing assembly with pressure plate;
3 — mounting bolt;
4 — clutch release bearing;
5 — clutch release fork;
6 - locking spring;
7 — bearing guide sleeve;
8 - sealing ring;
9 — gasket.
Slave disc of the clutch with an elastic hub. The dimensions of the slave disc are given in Table 4-1. The clutch release bearing is a ball, self-centering. On cars with an AFN diesel engine, a dual-type flywheel with a torsional vibration damper, a new clutch design and an anti-vibration weight on the gearshift drive are used (Fig. 4-2). The flywheel consists of two parts, one of which is connected to the crankshaft flange. The other part is connected to the clutch casing and is the working surface of the clutch mechanism. Between the flywheel parts there is a spring-type torsional vibration damper, in addition to which a friction torque limiter is used, protecting the engine from overloads during engine start-up and shutdown, during abrupt clutch engagement, and also eliminating vibration of the power unit.
Fig. 4-2. AFN engine clutch parts:
1 - flywheel;
2 - slave disk;
3 — clutch housing assembly with pressure plate.
The internal diameter of the main cylinder of the clutch hydraulic drive is 15.80 mm. The gap between the piston and the cylinder is no more than 0.15 mm. The internal diameter of the working cylinder is 18.10 mm. The maximum permissible non-flatness of the flywheel surface under the driven disk in operation is 0.2 mm.
The maximum permissible end runout of the driven disk is 0.8 mm.
The clutch release hydraulic drive reservoir is shared with the brake hydraulic drive.
The original text is available on the website (www.VWMANUAL.ru)
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