2010/03/22 Caterpillar


A Procedure to Properly Torque the Fittings on the Fuel Manifold Group on Certain C13 and C15 On-Highway Truck Engines Is Available {1274, 1380, 1702}

Usage:

C13 LEE


Engine:
C13 (S/N: LEE1-UP)
C15 (S/N: SDP1-UP)
Truck Engine News SEBD6839, 15 April 2010, "A Procedure to Properly Torque the Fittings on the Fuel Manifold Group on Certain On-Highway Truck Engines Is Available". Disregard this article. Refer to the article that follows.

Procedure

Use the following procedure that is listed below to verify that the fittings on the fuel manifold group are tightened correctly before the engine is released back into service.

C15




Illustration 1g02116677

Typical example of a fuel manifold group for C15 engines

(1) 353-8397 Connector As

(2) 353-8398 Connector As

(3) Fuel manifold group

  1. Tighten connector (1) to a torque of 20 N·m (14 lb ft). Refer to Illustration 1.

  1. Tighten connector (2) to a torque of 18 N·m (13 lb ft).



    Illustration 2g02116873

    Typical example

    (4) Pilot fuel supply line

    (5) Main fuel supply line

  1. Tighten the main fuel supply line (5) which connects to the main connector assembly to a torque of 26 N·m (19 lb ft).

  1. Tighten the pilot fuel supply line (4) which connects to the pilot connector assembly to a torque of 43 N·m (32 lb ft).

  1. Start the engine, and run the engine in order to ensure that there is no fuel leakage after service work is performed.

C13




    Illustration 3g02117883

    Typical Example of a fuel manifold group for C13 engines

    (1) 353-8397 Connector As

    (6) 353-9485 Elbow As

  1. Tighten the elbow assembly (6) to a torque of 18 N·m (13 lb ft). Refer to Illustration 3.

  1. Tighten connector (1) to a torque of 20 N·m (14 lb ft).



    Illustration 4g02116873

    Typical example

    (4) Pilot fuel supply line

    (5) Main fuel supply line

  1. Tighten the main fuel supply line (5) which connects to the main connector assembly to a torque of 26 N·m (19 lb ft).

  1. Tighten the pilot fuel supply line (4) which connects to the pilot connector assembly to a torque of 43 N·m (32 lb ft).

  1. Start the engine, and run the engine in order to ensure that there is no fuel leakage after service work is performed.

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