3512B and 3516B Engine Supplement for and 784C,, 785C and and 785C HAA Off-Highway Truck/Tractors Caterpillar


Accessory Drive (Front) - Install

Usage:

785C 1HW

Installation Procedure

Table 1
Required Tools 
Tool  Part Number  Part Description  Qty 
9U-7370  Belt Tension Test Tool 

  1. Check all of the O-ring seals and the components for wear or for damage. Replace the components, if necessary.Belt Tension Test Tool

  2. Lubricate the O-ring seals lightly with clean engine oil prior to installation.

  3. Verify that the front accessory drive is clean and free of foreign material prior to installation.


    Illustration 1g00564654

  4. Install O-ring seal (13) to front accessory drive (12).


    Illustration 2g00564653

  5. Install front accessory drive (12) to the front housing with six bolts (11).


    Illustration 3g00564630

  6. Install adapter (10) and the O-ring seals to the front housing with four bolts (9).


    Illustration 4g00564627

  7. Install pulley (8) to the shaft with four bolts (7).

  8. Install V-belt (6) to the alternator and the pulley. Tighten two adjustment nuts (5) in order to adjust the V-belt tension. Refer to Operation and Maintenance Manual, SEBU7173, "Alternator, Air Conditioner and Fan Belts - Inspect/Adjust/ Replace" for the correct procedure.

  9. Use Tool (A) (not shown) in order to measure the belt tension. Refer to Operation and Maintenance Manual, SEBU7173, "Belt Tension Chart" for the correct belt tension.


    Illustration 5g00564625

  10. Install guard (4) with bolt (3) and the washer. Install guard (1) to the alternator with two nuts (2) and the washers.

End By:

  1. Install the engine oil pump. Refer to Disassembly and Assembly, "Engine Oil Pump - Install".

  2. Install the water pump. Refer to Disassembly and Assembly, "Water Pump - Install" for the correct procedure.

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