3054E Industrial Engine Caterpillar

Installation Procedure

Standard Idler Gear

1. Clean all of the components and inspect all of the components that were removed in the previous procedure. If necessary, replace any worn component and/or any damaged component.

   Note: Timing pins are used in order to time the engine at top dead center. The timing pins are a slip fit. Do not use excessive force to install the timing pins. Do not use the timing pins to lock the engine during repairs.

2. Ensure that the No. 1 cylinder is still at the top center position on the compression stroke. If necessary, refer to the Testing and Adjusting Manual, "Finding Top Center Position for No. 1 Piston". Ensure that the timing pin for the crankshaft is installed and that the timing pin for the camshaft is installed.

   Note: Ensure that the marks on the idler gear (1) face toward the front.

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   Illustration 1	g01141709
   Typical example

3. Assemble the idler gear. Refer to this Disassembly and Assembly manual, "Idler Gear (Front) - Assemble".
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   Illustration 2	g01141715
   Typical example

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   Illustration 3	g01141747
   Typical example

4. Lift the assembly (3) of the idler gear and the hub over the housing for the crankshaft front seal (4) and insert the hub into the recess (6) in the cylinder block.

   Note: Ensure that the oil hole (2) is to the top of the hub.

   Note: Ensure that the marks (1) on the idler gear assembly (3) align with the marks on the camshaft gear and with the crankshaft gear.

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   Illustration 4	g01141734
   Typical example

5. Align the holes in the plate (8) with the holes in the hub. Insert the setscrews (7) through the plate (8) and into the hub.

6. Evenly tighten the setscrews (7) to a torque of 44 N·m (32 lb ft).

Heavy-Duty Idler Gear

Note: In order to install the heavy-duty idler gear, use the steps (1 to 3) in the procedure to install the standard idler gear.

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Illustration 5	g01141682

1. Lift the assembly (3) of the idler gear and the hub over the housing for the crankshaft front seal (2) and insert the hub into the recess in the cylinder block. Refer to illustration 3.

2. Ensure that the word "Top" (1) is at the top of the plate.

3. Align the holes (4) in the assembly to the holes in the cylinder block. Install the three setscrews and tighten the setscrews to a torque of 44 N·m (32 lb ft).

End Play

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Illustration 6	g01141765
Typical example

1. Check the end play of the idler gear. Refer to illustration 6. Also refer to the Specifications, "Gear Group - Front".

2. Install the fuel pump gear. Refer to this Disassembly and Assembly Manual, "Fuel Injection Pump - Install".

3. Ensure that all timing pins are removed.

4. Check the backlash of the gear train. Refer to Specifications Manual, "Gear Group (Front)" for more information.

End By:

1. Install the rocker shaft. Refer to this Disassembly and Assembly Manual, "Rocker Shaft and Pushrod - Install".

2. Install the glow plugs if the glow plugs were previously removed. Refer to this Disassembly and Assembly Manual, "Glow Plugs - remove and Install".

3. Install the front cover. Refer to this Disassembly and Assembly Manual, "Front Cover - Remove and Install".