349F and 352F Excavators Engine Supplement Fan Drive - Remove and Install - Direct Drive - Type 2 Caterpillar


Fan Drive - Remove and Install - Direct Drive - Type 2
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1.1. Removal Procedure
2.1. Installation Procedure

Removal Procedure

------ WARNING! ------

Personal injury can result from hot coolant, steam, and alkali.

At operating temperature, engine coolant is hot and under pressure. The radiator and all lines to heaters or the engine contain hot coolant or steam. Any contact can cause severe burns.

Remove cooling system pressure cap slowly to relieve pressure only when engine is stopped and allow sufficient time for the cooling system to cool.

Do not attempt to tighten hose connections when the coolant is hot, the hose can come off causing burns.

Cooling System Coolant Additive contains alkali. Avoid contact with skin and eyes.




    Illustration 1g06031325

  1. Open access door (1)


    Illustration 2g06031327

  2. Turn battery disconnect switch (2) to OFF position.


    Illustration 3g06031328

  3. Open hood assembly (3).


    Illustration 4g06031330

  4. Remove bolts (4) and sheet assembly (5).


    Illustration 5g06031331

  5. Loosen clamps (6) and disconnect hoses (8).

  6. Disconnect hose (7) and harness assembly (9).

  7. Loosen clamp (10) and disconnect hose (11).


    Illustration 6g06031332

  8. Remove bolt (13) and coolant tank (12).


    Illustration 7g06031334

  9. Remove bolts (14) and sheet assembly (15).


    Illustration 8g06031335

  10. Loosen clamps (17) and remove hose (16).


    Illustration 9g06031338

  11. Remove bolts (19) and (20). Remove bracket assembly (18).


    Illustration 10g06031341

  12. Remove the straps and disconnect harness assembly (21).


    Illustration 11g06031342

  13. Use two people to remove fan drive group (23). The weight of fan drive group (23) is approximately 20 kg (44 lb)Remove bolts (22) and fan drive group (23).


    Illustration 12g06031343

  14. Remove bolts (24). Remove fan assembly (26) from drive assembly (25).


    Illustration 13g06031345

  15. Remove belt (27). Remove bolt (28) and fan pulley (29).


    Illustration 14g06031349

  16. Remove bolts (30) and fan drive group (31).

Installation Procedure

Table 1
Required Tools 
Tool  Part Number  Description  Qty 
Loctite 243 

  1. Install fan drive group (31) in the reverse order of removal.

    1. Apply Tooling (A) to the threads of bolt (28). Tighten bolt (3) to a torque of 115 ± 15 N·m (85 ± 11 lb ft).

    2. Tighten bolts (24) to a torque of 23.5 ± 3.5 N·m (207.9 ± 30.9 lb in).

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