LINK-CONNECTING 4530260 - Caterpillar

Introduction
This Special Instruction provides detailed instructions on the installation of the HEUI wiring harness to the 3408E and 3412E injectors. Note: The entire instruction should be read and understood before you begin work on the engine. Failure to follow these instructions can result in serious engine damage.Unit Injector Wiring Harness
Illustration 1 g00628332
(1) White connector (2) Mark "F" (3) Sleeve (4) Mark "R" (5) Black connector
Illustration 2 g00635542
Detail AIdentification of the Connectors and Location of the Cylinder Number
Illustration 3 g00628376
(A) Connector identification for rear cylinder (B) Connector identification for front cylinder (C) Flywheel housing (D) Location of the cylinder number (E) Rear of engineNote: The front of the engine is opposite the flywheel housing end. The left side and the right side of the engine are viewed from the flywheel housing. The front of the machine may not be the front of the engine. This should not be used as a reference for determining the orientation of the engine.Installation of The Wiring Harness Assembly
Illustration 4 g00628445
Left hand side (1) White connector (2) Mark "F" (3) Sleeve (4) Mark "R" (5) Black connector (6) Nuts (7) Flywheel housing (8) Centerline of the crankshaft
Illustration 5 g01082694
Right hand side (1) White connector (2) Mark "F" (3) Sleeve (4) mark "R" (5) Black connector (6) Nuts (7) Flywheel housing (8) Centerline of the crankshaftThe harness assembly has a white connector that is marked with "F" for the front and a black connector marked "R" for the rear. One harness assembly is used for two cylinders under each valve cover. The white connector must be installed on the injector toward the front of the engine. The black connector must be installed on the injector toward the rear of the engine.The wires for the white connector are enclosed within a sleeve. The cylinder numbers 1, 2, 5, 6, 9, and 10 are printed on the sleeve. The wires for the black connector are not enclosed within a sleeve.
The white connector (1) is marked "F" for the front. Assemble the white connector (1) to the injector on the front cylinder. The front cylinders for the left side of the engine are the following: 1, 5 and 9. The front cylinders for the right side of the engine are the following: 2, 6 and 10.
Torque the nuts (6) to the following torque.Torque for nuts ... 1.70 0.25 N m (15 2 lb in)
The black connector (5) is marked "R" for the rear. Assemble the black connector (5) to the injector on the rear cylinder. The rear cylinders for the left side of the engine are the following: 3, 7 and 11. The rear cylinders for the right side of the engine are the following: 4, 8 and 12
Torque the nuts (6) to the following torque.Torque for nuts ... 1.70 0.25 N m (15 2 lb in)Note: Cylinders 9, 10, 11, and 12 are not applicable to a 3408E engine.Note: A film is supplied with the wiring harness. The film illustrates the