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R8902 Sensor Kit for Nissan SD-22 Diesel Engine Installation Instructions

February 28th, 2011 · No Comments

1) Remove the splash pan to access the engine pulley. Scrape away the paint from two areas directly opposite from each other on the rear of the pulley as shown on the back page. Roughen the bare metal with an emery cloth. Clean the magnets and bare metal on pulley with alcohol to remove any oil or grease residue so that the glue will bond. Glue each magnet to the selected surface of the pulley with the BLUE SIDE OUT (north pole) and with the magnets directly across (180° apart) from each other to maintain balance. Suggested method for glue application: Apply the glue to the area on the pulley where the magnet will set, then apply the accelerant (crush tube) to the magnet face (non-blue side), then apply the magnet to glue area on pulley. Be sure to apply enough glue to fill the gap between pulley and magnet. Repeat for other magnet. Let glue set for 10-15 minutes. Follow the instructions on the glue packet enclosed in your kit to allow the proper glue curing time before starting the engine.
2) Remove one of the front oil pan bolts (10mm) and use it to mount the Sensor Assembly. Position the sensor so that there is approximately ⅛” to ž” clearance between the end of the sensor and the magnets.
3) Connect two #20 AWG or larger wires (not supplied with the kit) to the two sensor wires and route them into the cab to the tachometer. Locate wires away from starter wires, electric motor wires, etc. Secure the wires along as necessary.
4) Replace the splash pan.
5) Mount the R8503 Tachometer (4,000) in the desired location using the optional bracket or other mounting device. Connect the wires coming from the 3 wire cable as follows:
a) White wire to one of the sensor wires.
b) Black wire to the other sensor wire. Ground this connection as close as practical to the tachometer head.
c) Red wire to a fused ignition-switched +12 VDC source.
6) Connect the wires from the tachometer light as follows:
a) One wire to vehicle dash light circuit.
b) The other wire to clean ground.
7) Start the engine after double-checking all connections and clearances. The tachometer should now read the engine RPM. No calibration is necessary.


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