3412C GENERATOR SET ENGINE Caterpillar


Fuel Injection Nozzles & Adapters

Usage:

Remove Fuel Injection Nozzles & Adapters

Start By:

a. remove valve cover

1. Disconnect fuel line nut (1). Remove Nut (2) and O-ring seal. Disconnect fuel line nut (4) and remove fuel line assembly (3).


NOTICE

Put protection caps on all fuel line openings.


2. Remove retainer (5) from fuel adapter with tool (B).

3. Install nozzle puller group (C) and remove fuel nozzle from adapter.

4. Install tool (D) and remove adapter (6).

Install Fuel Injection Nozzles & Adapters

1. Put 5P3931 Anti-Seize Compound on the threads of the adapter before installation. Install fuel adapter (6) with tool (D). Torque for the adapter is 200 ± 14 N·m (150 ± 10 lb ft).

2. Install new carbon seal stop (7) with tool (E).

3. Make sure the correct washer (8) is used when the nozzle assembly (10) is installed. Always use a new washer anytime the bleed screw (9) is loosened or removed. Install fuel nozzle assembly (10) in adapter (6). Install retainer (5) with a torque of 48 ± 7 N·m (35 ± 5 lb ft).

4. Install fuel injection line assembly (3) (finger tighten connections first). Install the O-ring seal and nut (2) with a torque of 30 ± 7 N·m (22 ± 5 lb ft). Reconnect fuel line nut (1) with a torque of 40 ± 7 N·m (30 ± 5 lb ft). Use tool (A) to reconnect fuel line nut (4) with a torque of 40 ± 7 N·m (30 ± 5 lb ft).

End By:

a. install valve cover

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