STUD 1428725 - Caterpillar

Start By:a. remove fuel injection lines
Do not let the tops of the fuel nozzles turn when the fuel lines are loosened. The nozzles will be damaged if the top of the nozzle turns in the body.
1. Remove clamp (1). 2. Install tool (A). Move the screw out of the puller enough to engage the inside lip of the puller on the lower stepped diameter of the nozzle.3. With the nozzle bleed screw seen through the clearance hole in tooling (A), turn the screw down until the tip of the button goes down into the thread in the hole for the nozzle clamp bolt.
Do not exceed a torque of 17 N m (150 lb.in.) on the screw in tooling (A) to remove the nozzle. Added force can cause the stem of the nozzle to bend or break off.
4. If the nozzle can not be removed with tooling (A), tooling (B) must be used.5. Remove the protective cap and install tooling (B).6. Use the slide hammer to remove fuel injection nozzle (2).
Hold tool (B) so the center line of tool (B) is the same as the extended center line of fuel injection nozzle (2). This will prevent distortion of the fuel injection nozzle which can cause the nozzle to bend or break off.
7. If tool (B) was used to remove the fuel injection nozzle, make a replacement of the nozzle.8. If tool (A) was used to remove the fuel injection nozzle, remove the carbon dam seal on the end of the nozzle.Install Fuel Injection Nozzles
1. Tool (C) must be drilled out to a diameter of 8.5 mm (.334 in.) and to a depth of 1.5 mm (.060 in.) before it can be used on the 8N7002 Fuel Nozzles. Use tool (C) to install carbon dam seal (3) on nozzle.2. Make reference to Special Instruction Form No. SEHS7292, for the use of tooling (D).3. Install a new seal (4) on fuel injection nozzle (2). 4. Use tool (D) to clean the bore for the fuel injection nozzle. Use an open end wrench or tap driver to turn tool (E). 5. Install fuel injection nozzle (2). Put the nozzle in position with the bleed screw (5) away from the rocker arm cover.6. Install the clamp.
Do not let the tops of the fuel nozzles turn when the fuel lines are tightened. The nozzles will be damaged if the top of the nozzle turns in the body.
End By:a. install fuel injection lines