Removing
1. Engine 111.951: Remove the air filter. Remove the generator.
2. Engine 111.955: Remove the air filter with circulation flap actuator. Remove compressor. Close the generator with a clean cloth.
3. Loosen the tip one turn (1). This requires a 10 mm socket wrench.
Attention! After unscrewing the tip, the tensioner must be removed in any case.
4. Turn out the tensioner by the outer hexagon of the housing (7) from the cylinder head.
Disassembly
Attention! After unscrewing the tip, the tensioner must be removed, disassembled and reassembled, because. otherwise, the timing chain may be overstretched.
1. Unscrew the tip (1) with sealing ring (2) from the tensioner.
2. Remove the pin from the housing (3) and compression spring (4).
3. Squeeze out of the body (7) finger (6) with retaining ring (5).
Installation
1. Insert your finger from behind (6) with retaining ring (5) so that it sits flush with the tensioner housing from the front (7).
2. Screw the tensioner housing (7) with pin, retaining ring and sealing ring (8) into the cover of the timing mechanism housing and secure with a torque of 80Nm.
3. Insert the spring into the tensioner (4) and finger (3).