120M and 12M Motor Graders Engine Supplement Caterpillar


Electric Starting Motor - Remove and Install

Usage:

120M B9C

Removal Procedure

Note: Put identification marks on all hoses, on all hose assemblies, on all harness assemblies, and on all tube assemblies for installation purposes. Plug all hose assemblies and all tube assemblies. This helps to prevent fluid loss, and this helps to keep contaminants from entering the system.


NOTICE

Care must be taken to ensure that fluids are contained during performance of inspection, maintenance, testing, adjusting and repair of the product. Be prepared to collect the fluid with suitable containers before opening any compartment or disassembling any component containing fluids.

Refer to Special Publication, NENG2500, "Caterpillar Dealer Service Tool Catalog" for tools and supplies suitable to collect and contain fluids on Caterpillar products.

Dispose of all fluids according to local regulations and mandates.


  1. Turn the disconnect switch to the OFF position.



    Illustration 1g01420568

  1. Disconnect rod (1). Remove bolts (2). Remove panel assembly (3) .



    Illustration 2g01420577

  1. Remove nut (5) and disconnect cable assembly (4) .

  1. Remove nut (6) and remove cover (7) .



    Illustration 3g01420605

  1. Remove nut (8) and disconnect cable assembly (9) .



    Illustration 4g01420626

  1. Remove nut (12) and disconnect cable assemblies (13) .

  1. Remove bolts (10). Use two people in order to remove electric starting motor (11). The weight of electric starting motor (11) is approximately 28 kg (62 lb).

Installation Procedure

Note: Cleanliness is an important factor. Before installation, thoroughly clean all parts in cleaning fluid. Allow the parts to air dry. Do not use wiping cloths or rags to dry parts. Lint may be deposited on the parts which may cause trouble. Inspect all parts. If any parts are worn or damaged, use new parts for replacement. Dirt and other contaminants can damage the precision component. Keep components covered and protected at all times.

Note: Check the O-ring seals, the gaskets, and the seals for wear or for damage. Replace the components, if necessary.




    Illustration 5g01420626

  1. Use two people in order to position electric starting motor (11). The weight of electric starting motor (11) is approximately 28 kg (62 lb).

  1. Install bolts (10) .

  1. Position cable assemblies (13) and install nut (12). Tighten nut (12) to a torque of 31 ± 4 N·m (29 ± 3 lb ft).



    Illustration 6g01420605

  1. Connect cable assembly (9) and install nut (8). Tighten nut (8) to a torque of 2.25 ± 0.25 N·m (20 ± 2.2 lb in).



    Illustration 7g01420577

  1. Position cover (7) and install nut (6) .

  1. Connect cable assembly (4) and install nut (5). Tighten nut (5) to a torque of 31 ± 4 N·m (29 ± 3 lb ft).



    Illustration 8g01420568

  1. Position panel assembly (3) and install bolts (2) .

  1. Install rod (1) .

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