3408 VEHICULAR ENGINE FOR 768C TRACTOR & 769C TRUCK Caterpillar


Fan Drive (Later)

Usage:

Disassemble And Assemble Fan Drive

START BY:

a. remove fan drive and fan belt tightener (later) as a unit

b. remove fan belt tightener (later)

1. Remove O-ring seal (3).

2. Remove two bolts (1) and washer (2).

3. Use tooling (A) to remove hub (4) and the bearings.

4. Remove bearing (7), spacer (6) and bearing (5) from hub (4).

5. Remove lip-type seal (8) from hub (4).

6. Note the side of pulley (10) that mates with adapter (4) for installation purpose. Remove pulley (10).

7. Remove spacer (9).

8. Remove belt tightener spring (14).

9. If removal of shafts (11) and (12) from fan drive bracket (16) is necessary, use the following procedure:

a. Remove pin (15), and use a hydraulic press and suitable spacers to remove shaft (11).

b. Remove pin (13), and use a hydraulic press and suitable spacers to remove shaft (2).

10. Thoroughly clean and inspect all parts.

NOTE: The following steps are for assembly of the fan drive.

11. Align the lubricant passage on shaft (11) with the passage in fan drive bracket (16).

12. Use a hydraulic press to install shaft (11) into fan drive bracket (16) until dowel (15) can be installed.

13. Install dowel (15) so it is even with each side of the fan drive bracket. Install spring (14) on bracket (16).

14. Use a hydraulic press to install shaft (12) into fan drive bracket (16) until pin (13) can be installed. Install pin (13) to a depth of 6.5 to 8.5 mm (.256 to .335 in.).

15. Install spacer (9) on the shaft as shown.

16. Place pulley (10) over the shaft. Be sure the pulley will be in its original position in relation to the adapter.

17. Use tooling (B) to install the lip-type seal in adapter (10). Install the lip-type seal with the spring loaded lip to the outside of hub (10).

18. Install bearing (5), spacer (6) and bearing (7) into hub (10).

19. Put clean engine oil on the lip of the seal in adapter (10).

20. Put hub (10) and bearings in position on shaft (1).

21. Install washer (2) and two bolts (1).

22. Install O-ring seal (3).

END BY:

a. install fan belt tightener (later)

b. install fan drive and fan belt tightener (later) as a unit

Caterpillar Information System:

3408 VEHICULAR ENGINE FOR 768C TRACTOR & 769C TRUCK Fan Belt Tightener (Later)
3408 VEHICULAR ENGINE FOR 768C TRACTOR & 769C TRUCK Fan Drive And Belt Tightener (Later)
3408 VEHICULAR ENGINE FOR 768C TRACTOR & 769C TRUCK Fan Drive (Earlier)
3408 VEHICULAR ENGINE FOR 768C TRACTOR & 769C TRUCK Fan Assembly
3408 VEHICULAR ENGINE FOR 768C TRACTOR & 769C TRUCK Governor
3408 VEHICULAR ENGINE FOR 768C TRACTOR & 769C TRUCK Fuel Injection Pump Housing
3408 VEHICULAR ENGINE FOR 768C TRACTOR & 769C TRUCK Fuel Injection Pump Housing And Governor
3408 VEHICULAR ENGINE FOR 768C TRACTOR & 769C TRUCK Automatic Timing Advance
3408 VEHICULAR ENGINE FOR 768C TRACTOR & 769C TRUCK Fuel Rack Travel
3408 VEHICULAR ENGINE FOR 768C TRACTOR & 769C TRUCK Fuel Injection Pumps
3408 VEHICULAR ENGINE FOR 768C TRACTOR & 769C TRUCK Fuel Transfer Pump
3408 VEHICULAR ENGINE FOR 768C TRACTOR & 769C TRUCK Fuel Injection Nozzles And Adapters (Later)
3408 VEHICULAR ENGINE FOR 768C TRACTOR & 769C TRUCK Water Temperature Regulators
3408 VEHICULAR ENGINE FOR 768C TRACTOR & 769C TRUCK Water Pump
3408 VEHICULAR ENGINE FOR 768C TRACTOR & 769C TRUCK Vibration Damper And Crankshaft Pulley
3408 VEHICULAR ENGINE FOR 768C TRACTOR & 769C TRUCK Engine Front Support And Trunnion
3408 VEHICULAR ENGINE FOR 768C TRACTOR & 769C TRUCK Crankshaft Front Seal And Wear Sleeve
3408 VEHICULAR ENGINE FOR 768C TRACTOR & 769C TRUCK Governor Shutoff Solenoid
3408 VEHICULAR ENGINE FOR 768C TRACTOR & 769C TRUCK Governor Control Cylinder
3408 VEHICULAR ENGINE FOR 768C TRACTOR & 769C TRUCK Timing Gear Cover
3408 VEHICULAR ENGINE FOR 768C TRACTOR & 769C TRUCK Camshaft
3408 VEHICULAR ENGINE FOR 768C TRACTOR & 769C TRUCK Camshaft Bearings
3408 VEHICULAR ENGINE FOR 768C TRACTOR & 769C TRUCK Camshaft Idler Gear
3408 VEHICULAR ENGINE FOR 768C TRACTOR & 769C TRUCK Camshaft Rear Gear And Balancer
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