KIT-GAS STRUT 3327047 - Caterpillar

3512 (4KC1-117) Low Emission Generator Set ApplicationsIntroduction
Information for installation of an engine timing control on the above engines is given in this instruction. To install the new timing control, certain original equipment parts must be removed, according to engine model and serial number. It will then be necessary to install new parts on the engine.Removal and installation information for these parts is given in this instruction.If an engine is equipped with a Fairbanks Morse ignition system, it will be necessary to remove the complete ignition system, perform some modification to the flywheel housing, then install the new parts necessary to adapt the engine timing control.For those engines that are equipped with an altronic magneto, make sure the magneto has the variable timing feature. (An additional connector is needed on the magneto rear face for connection of the timing control unit.) It is necessary to have a 24 Volt power source available at all times, for operation of the timing control.Reference: Service Manual, Parts Book.Modification of Flywheel Housing Equipped with Core Plug
To install this timing control system on this engine, it will be necessary to install a magnetic pickup to be used as a crankshaft angle sensor.* Some engines will have a flywheel housing that already has a threaded hole, with a plug in it, that can be used for installation of the magnetic pickup. The modification procedure given here will not be necessary for those engines. It will be necessary, however, to remove the plug and install the magnetic pickup as described later in this instruction.* For those engines that are equipped with a core plug [refer to core plug (1) in the illustration that follows] it will be necessary to do the complete flywheel housing modification procedure given here. In this procedure, a new plug will be needed for installation in the flywheel housing. A special template is needed to accurately identify the location to drill and tap two holes in this new plug. Accurate location of both of these holes is necessary. One hole is used for installation of a bolt to retain the newly installed plug and keep it from turning. The second hole will be used for installation of the crankshaft angle sensor.The new plug and the template, used for this modification procedure only, can be obtained by contacting Engine Division Service Engineering, Caterpillar Inc. It will be necessary to return the template to Service Engineering after your modification is completed. 1. Remove core plug (1) from hole (A) in the right front face of the flywheel housing. Install the new plug in hole (A).2. Remove cover plates (3) and (4). Removal of cover plate (4) is necessary to observe inside the flywheel housing during the following procedure. 3. Put template (6) in position on the flywheel housing, over new plug (5) [installed in hole (A) in Step 1]. The template has a hole that permits it to fit over plug (2) and its mounting boss.4. Align the two bolt holes [locations (C) and