963K Track-Type Loader Machine Systems Caterpillar


Fan and Gear Motor (Hydraulic Fan) - Remove and Install

Usage:

963K LBL

Removal Procedure

Table 1
Required Tools 
Tool  Part Number  Part Description  Qty 
439-3940  Bracket As 
1P-2321  Combination Puller 

Start By:

  1. Release the hydraulic system pressure.

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

Personal injury can result from hydraulic oil pressure and hot oil.

Hydraulic oil pressure can remain in the hydraulic system after the engine has been stopped. Serious injury can be caused if this pressure is not released before any service is done on the hydraulic system.

Make sure all of the work tools have been lowered to the ground, and the oil is cool before removing any components or lines. Remove the oil filler cap only when the engine is stopped, and the filler cap is cool enough to touch with your bare hand.


  1. Turn the battery disconnect switch to the OFF position.


    Illustration 1g06015983

  2. Remove bolts (1). Open door (2).


    Illustration 2g06015998

  3. Disconnect hose assemblies (3) and position hose assemblies (3) out of the way. Remove hose clamps (4). Disconnect harness assembly (5).


    Illustration 3g06016000


    Illustration 4g06016012

  4. Remove bolts (6). Tilt fan assembly (7) out to install Tooling (A) and a suitable lifting device to the top of fan assembly (7). The weight of fan assembly (7) is approximately 51 kg (112 lb).


    Illustration 5g06016198

  5. Disconnect gas spring (8).


    Illustration 6g06016352


    Illustration 7g06016218

  6. Use a second person to push in on the bottom of fan assembly (7). Disconnect bottom hinges (9). When bottom hinges (9) are disconnected, fan assembly (7) can hang straight. Disconnect cable assembly (10). Remove fan assembly (7).


    Illustration 8g06016354

  7. Position fan assembly (7) onto suitable cribbing. Remove bolts (11) and fan (12).


    Illustration 9g06016294

  8. Remove nut (13) and washer (14).


    Illustration 10g06016241

  9. Use Tooling (B) to remove hub (15).


    Illustration 11g06016361

  10. Turn fan assembly (7) over to the other side. Remove bolts (16) and fan motor (17).

Installation Procedure

  1. Install fan (12) and fan motor (17) in the reverse order of removal.

    1. Tighten nut (13) to a torque of 60 ± 10 N·m (44 ± 7 lb ft).

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