120H and 135H Motor Graders Machine Systems Caterpillar


Gear Motor (Hydraulic Fan) - Disassemble

Usage:

120H 124

Disassembly Procedure

Start By:

  1. Remove the gear motor (Hydraulic fan). Refer to Disassembly and Assembly, "Gear Motor (Hydraulic Fan) - Remove".

Note: Cleanliness is an important factor. Before you begin the disassembly procedure, the exterior of the components should be thoroughly cleaned. This will help to prevent dirt from entering the internal mechanism. Precision components can be damaged by contaminants or by dirt. Perform disassembly procedures on a clean work surface. Keep components covered and protected at all times.

Note: Put identification marks on pumps and motors for assembly purposes.


NOTICE

Keep all parts clean from contaminants.

Contamination of the hydraulic system with foreign material will reduce the service life of the hydraulic system components.

To prevent contaminants from entering the hydraulic system, always plug or cap the lines, fittings, or hoses as they are disconnected. Cover any disassembled components and clean them properly before assembly.

Clean the hydraulic system properly after any major component exchange or especially after a component failure, to remove any contamination.





    Illustration 1g00912438

  1. Remove nut (2) from motor (1) .



    Illustration 2g00907332

  1. Remove bolts (3) from motor (1) .



    Illustration 3g00907333

  1. Remove cover (4) from motor (1) .



    Illustration 4g00993376

  1. Remove O-ring seal (5) from motor (1) .

  1. Remove seals (6) and (7) from motor (1) .



    Illustration 5g00907924

  1. Remove body (8) from motor (1) .



    Illustration 6g00907926

  1. Remove O-ring seal (9) from body (8) .



    Illustration 7g00907929

  1. Remove plate (10) from motor (1) .



    Illustration 8g00907930

  1. Remove drive gear (11) and driven gear (12) from motor (1) .



    Illustration 9g00907934

  1. Remove plate (13) from motor (1) .



    Illustration 10g00907935

  1. Remove seals (14) and (15) from plate (13).



    Illustration 11g00908098

  1. Remove seal (16) from motor (1) .

  1. Remove retaining ring (17) from motor (1) .

  1. Remove seal (18) from motor (1).

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