3406E and 3456 Generator Set Engines Caterpillar

Removal Procedure

Start By:

1. Remove the crankshaft rear seal. Refer to Disassembly and Assembly, "Crankshaft Rear Seal - Remove".
2. Remove the electric starting motor. Refer to Disassembly and Assembly, "Electric Starting Motor - Remove".
3. Remove the engine oil pan. Refer to Disassembly and Assembly, "Engine Oil Pan - Remove".

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Illustration 1	g00516618
Typical example

1. Install Tooling (A) on flywheel housing (1). Use a suitable lifting device. The weight of the flywheel housing is approximately 111 kg (245 lb).

2. Remove bolts (2). Remove flywheel housing (1) from the dowels in the cylinder block.

Installation Procedure

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Illustration 2	g00516618
Typical example

Note: During assembly, inspect the following components for any foreign materials: the front face of the flywheel housing, both sides of the flywheel housing gasket, and the rear face of the cylinder block. These components must be free of the following substances: oil, fuel, water, gasket adhesive, assembly compounds, and any other foreign material.

1. Install Tooling (A) on the flywheel housing (1). Use a suitable lifting device. The weight of the flywheel housing is approximately 111 kg (245 lb).

2. Position flywheel housing (1) on the dowels in the cylinder block. Install bolts (2) and remove Tooling (A) .

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Illustration 3	g00551652
Bolt tightening sequence

3. Tighten the bolts, as follows:

   1. In a numerical sequence, tighten bolt 1 through bolt 9.

      Torque for bolts ... 100 ± 20 N·m (74 ± 15 lb ft)

   2. In a numerical sequence, tighten bolt 10 through bolt 24.

      Torque for bolts ... 40 ± 10 N·m (30 ± 7 lb ft)

   3. In a numerical sequence, again tighten bolt 1 through bolt 9.

      Torque for bolts ... 135 ± 20 N·m (100 ± 15 lb ft)

   4. In a numerical sequence, again tighten bolt 10 through bolt 24.

      Torque for bolts ... 55 ± 10 N·m (41 ± 7 lb ft)

End By:

1. Install the engine oil pan. Refer to Disassembly and Assembly, "Engine Oil Pan - Remove and Install".
2. Install the electric starting motor. Refer to Disassembly and Assembly, "Electric Starting Motor - Remove and Install".
3. Install the crankshaft rear seal. Refer to Disassembly and Assembly, "Crankshaft Rear Seal - Install".