C6.6 Industrial Engine Accessory Drive - Remove and Install - Accessory Drive SAE "A" Caterpillar


Accessory Drive - Remove and Install - Accessory Drive SAE "A"
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1.1. Removal Procedure
2.1. Installation Procedure

Removal Procedure

Table 1
Required Tools 
Tool  Part Number  Part Description  Qty 
8H-0663  Bearing Puller  
5F-7345 Puller 
126-7183 Crossblock 
126-7177 Puller Leg 


NOTICE

Keep all parts clean from contaminants.

Contaminants may cause rapid wear and shortened component life.



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.

Dispose of all fluids according to local regulations and mandates.




    Illustration 1g02186413


    Illustration 2g02186414

  1. If necessary, remove the Original Equipment Manufacturer's (OEM) driven equipment from auxiliary drive (5). Refer to the OEM for the correct procedure.

  2. If OEM driven equipment was not installed onto auxiliary drive (5). Remove cover plate (2) and remove O-ring seal (3) (not shown).

  3. Remove Allen head screws (4) and Allen head screw (6) from accessory drive housing (5).

  4. Remove accessory drive housing (5) from the front housing.


    Illustration 3g02183295

  5. Remove gasket (7) from accessory drive housing (5).

  6. If necessary, follow Step 6.a through Step 6.d in order to disassemble the accessory drive.

    1. Remove circlip (11) from accessory drive housing (5).

    2. Place accessory drive housing (5) onto a suitable support. Press the assembly of gear (9), bearing (10) and bearing (8) out of accessory drive housing (5).

    3. Use Tooling (A) in order to remove bearing (10) from gear (9).

    4. Use Tooling (A) in order to remove bearing (8) from gear (9).

Installation Procedure

Table 2
Required Tools 
Tool  Part Number  Part Description  Qty 
7M-7456  Bearing Mount Compound 
5P-3975  Rubber Lubricant 


NOTICE

Keep all parts clean from contaminants.

Contaminants may cause rapid wear and shortened component life.




    Illustration 4g02183296

  1. If necessary, follow Step 1.a through Step 1.e in order to assemble the accessory drive.

    1. Inspect the condition of the teeth and the splines of gear (9) for wear and damage. Inspect bearing (10), bearing (8), and circlip (11). Inspect accessory drive housing (5) for wear and damage. Replace any components that are worn or damaged.

    2. Apply a small continuous bead of Tooling (B) to inner Surface (X) of bearing (8). Place the inner race of bearing (8) onto a suitable support. Press the shaft of gear (9) into bearing (8) until the shoulder of the gear is against the bearing. Remove any excess compound.

    3. Apply a small continuous bead of Tooling (B) to inner Surface (Z) of bearing (10). Place the inner race of bearing (10) onto a suitable support. Press the shaft of gear (9) into bearing (10) until the shoulder of the gear is against the bearing. Remove any excess compound.

    4. Apply a small continuous bead of Tooling (B) to the outer Surface (W) and the outer Surface (Y) of bearing (8) and bearing (10). Place accessory drive housing (5) on a suitable support. Press the assembly of gear (9) into the accessory drive housing. Ensure that bearing (10) and bearing (8) are against the front face of the recesses in accessory drive housing (5). Remove any excess compound.

    5. Install circlip (11) into the groove in accessory drive housing (5). Ensure that circlip (11) is correctly positioned in the groove.

  2. Inspect the bore in the front housing for damage. If necessary, replace the front housing. Refer to Disassembly and Assembly, "Housing (Front) - Remove" and Disassembly and Assembly, "Housing (Front) - Install" for the correct procedure.

  3. Position a new gasket (7) to accessory drive housing (5).

  4. Lightly lubricate bearing (10), bearing (8), and gear (9) with clean engine oil. Install the assembly of the accessory drive to the front housing. Ensure that the flange on the accessory drive housing is flush with the front housing.


    Illustration 5g02186414

  5. Install new M8 Allen head screws (4) to accessory drive housing (5).

  6. Install new M12 Allen head screw (6) to accessory drive housing (5).

  7. Tighten M8 Allen head screws to a torque of 22 N·m (195 lb in).

  8. Tighten M12 Allen head screw to a torque of 78 N·m (58 lb ft).

  9. Repeat Step 7 to ensure correct torque of M8 Allen head screws (4).

  10. Ensure that there is tactile backlash between the idler gear and the accessory drive gear.

  11. If necessary, install the OEM driven equipment to auxiliary drive (5). Refer to the OEM for the correct procedure.


    Illustration 6g02186413

  12. If OEM driven equipment is not being installed to the auxiliary drive. Use Tooling (C) in order to lubricate a new O-ring seal (3). Install O-ring seal (3) (not shown) to cover plate (2) install the cover assembly to the auxiliary drive and install bolts (1).

  13. Tighten bolts (1) to a torque of 16 N·m (142 lb in).

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