LINE ASSEM. 7N2874 - Caterpillar

3176B (9CK),
C-10 (2PN),
C-12 (1YN) Truck EnginesDescription of Change: Improved brackets are available for the above truck engines. The improved brackets are stronger and provide additional support for the refrigerant compressor to prevent overloading the front housing.Adaptable To: The improved brackets are adaptable to the above truck engines back to first production. See the following chart. Installation:
Illustration showing typical bracket installation.1. Align the mounting faces with the cylinder head and the front housing while finger tightening four bolts (1, 2). Make sure the faces are flush with no gaps.2. Lightly snug two bolts (1) to the head.3. Torque two bolts (3) through the front housing to standard torque.4. Loosen two bolts (1) at the cylinder head to relieve any assembly stress in the front housing.5. Torque two bolts (1) at the cylinder head to standard torque. When assembling the bracket (2) to 3176B Engines, some modifications to Original Equipment Manufacturer (OEM) hardware may be necessary. Installation of the new bracket will require the disassembly and assembly of the fuel rail and a coolant fitting change.