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DISTRIBUTOR INSTALLATION
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TM-5-4210-230-14P-1 Aerial Ladder Fire Fighting Truck Manual
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Test for Spark at plug.
ENGINE DIVISION SERVICE MANUAL TM 5-4210-230-14&P-1 7. Connect  timing  light  to  No.    1  spark  plug  (No.    8 spark plug on V-304, V-345, V-392 engines). IMPORTANT Do not puncture high tension cables or boots to make contact.  Use proper adapters.  (Figure 44) Fig.  44 1.  Adapter 8. Operate   engine   at   idle   speed   and   observe   timing marks with timing light.  Rotate distributor housing as needed to align timing mark on crankshaft pulley with specified    initial    timing    mark    on    timing    quadrant (Figure    45).        When    timing    is    correct,    tighten distributor  hold  down  bolt  and  recheck  timing  to  be sure it did not change. 9. Disconnect timing light and connect vacuum hose to distributor advance unit (where equipped). Fig. 45.  Timing Marks (V-304, V-345, V392 Engines Shown) 1.  Timing quadrant 2.  Timing mark IGNITION SYSTEM TROUBLE SHOOTING TEST The  procedure  outlined  below  can  be  used  to  check operation    of    the    electronic    (breakerless)    ignition    system. Electrical components (coil and electronic control unit) are not repairable. If the operation test indicates that they are faulty, replace them. TEST EQUIPMENT The   following   equipment   is   required   to   make   the operation test: D.  C.  Voltmeter Insulated grippers for handling high tension cables. Extension  (adapter)  to  plug  into  high  tension  cable terminals. Jumper Wire TEST PROCEDURE 1. Test Battery Voltage. Using   voltmeter,   test   battery   (Figure   46)   voltage should  be  12-13  volts  for  a  fully  charged  battery.  If necessary, charge or replace battery. Fig. 46.  Testing Battery Voltage 1.  Battery 2.  Ignition switch 3.  Voltmeter 4.  Ignition coil CGES-145-U  Page 23 PRINTED IN UNITED STATES OF AMERICA

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