479748-1300 ZEXEL 9 443 611 016 BOSCH PULSE GENERATOR 9443611016 4797481300

1. Remove six bolts (1) and remove the fan.2. Loosen the fan belts and alternator belts. Remove the belts. 3. Remove four bolts (3) and adjusting bolt (2). Remove the fan drive.Install Fan Drive
1. Put the fan drive in position on the engine and install the four bolts.2. Install the adjusting bolt. Install the fan and alternator belts. Make an adjustment to the tension. The correct belt tension is 7/8 in. (22 mm) movement for used belts and 3/4in. (19 mm) movement for new belts when measured with the application of a 25 lb. (11 kg) force half way between the two pulleys.3. Tighten the four fan drive bolts.4. Install the fan with the six bolts.Disassemble Fan Drive
start by: a) remove fan drive 1. Remove two bolts and washers (2). Remove hub (1). 2. Bend down the lock plate and remove bolts (4). Remove the lock plate and washer (3). 3. Use tool (A) to remove the pulley from the bracket assembly. 4. Remove the two bearings and the seal with tool (B).5. Remove the spacer.Assemble Fan Drive
1. Put multipurpose grease on the seal. Install the seal on the pulley with tool (A).2. Install the pulley in the bracket assembly. Fill half the space between the two bearings with multipurpose grease.3. Heat two bearings in oil. The temperature of the oil must be 300° 25°F (149° 14°C).
The bearing heating oil used to heat the bearings must have a flash point above 400°F (204°C).
4. Put multipurpose grease on the bearings. Install the bearing, spacer and bearing with tool (A). 5. Install the washer, lock plate and two bolts. Bend the lock plate up.6. Install the hub with the two bolts and lockwashers.end by: a) install fan drive