MACHINE SCREW 5A6503 - Caterpillar

Removal Procedure
Start By:
Remove the alternator belt. Refer to Disassembly and Assembly, "Alternator Belt - Remove and Install" for the correct procedure.
Keep all parts clean from contaminants.Contaminants may cause rapid wear and shortened component life.
Illustration 1 g03442080
Make a temporary mark on idler pulley (4) in order to identify the correct orientation and the position.
Loosen bolt (3) and remove idler pulley (4).
If necessary, follow Step 3.a through Step 3.c in order to remove bracket (2) for the idler pulley.
Make a temporary mark on bracket (2) in order to identify the correct orientation and the position.
Remove bolts (1) from bracket (2).
Remove bracket (2) from the cylinder block. Installation Procedure
Keep all parts clean from contaminants.Contaminants may cause rapid wear and shortened component life.
Ensure that all components of the idler pulley are clean and free from wear and damage. If necessary, replace any components that are worn or damaged.
Illustration 2 g03442080
If necessary, follow Step 2.a through Step 2.c in order to install bracket (2) for the idler pulley to the cylinder block.
Position bracket (2) onto the cylinder block. Note: Ensure that the bracket is correctly oriented.
Install bolts (1) to bracket (2).
Tighten bolts (1) to a torque of 44 N m (32 lb ft).
Position idler pulley (4) onto bracket (2). Tighten bolt (3) hand tight.
Tighten bolt (3) to a torque of 44 N m (32 lb ft). End By:
Install the alternator belt. Refer to Disassembly and Assembly, "Alternator Belt - Remove and Install" for the correct procedure.