80156M Mariner INDICATOR

Refer to Special Instruction, SEHS9278 for the instructions on the use of the 4C-8753 Extended Collet .Fuel setting is the adjustment of the fuel setting screw to a specified position. The fuel setting screw limits the power output of the engine by setting the maximum travel of all the fuel injector racks.
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Synchronization and fuel setting tools (1) 8T-2684 Rack Synchronization Gauge (2) 6V-3075 Dial Indicator (3) 4C-8753 Extended Collet (4) 5P-7263 Indicator Contact Point Before the fuel setting is checked, the injectors must be correctly synchronized. Refer to Testing And Adjusting, "Fuel Injector Synchronization". After the injectors are synchronized correctly, leave the synchronization pin in place for the procedure that follows.
Put 6V-3075 Dial Indicator (2) with 5P-7263 Indicator Contact Point Contact Point (4) in 4C-8753 Extended Collet (3). Remove the plug from the right side of fuel setting cover (8) .
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Installed dial indicator (typical example) (2) 6V-3075 Dial Indicator with 5P-7263 Indicator Contact Point (3) 4C-8753 Extended Collet
Move the governor or the actuator terminal shaft toward the ON position. The flat face of fuel stop lever (6) should make contact with synchronization pin (5). Hold the linkage in this position.
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(2) 6V-3075 Dial Indicator (4) 5P-7263 Indicator Contact Point (5) Synchronization pin (6) Fuel stop lever
Install dial indicator (2) and extended collet (3) in the threaded hole. After indicator contact point (4) touches fuel stop lever (6), slide dial indicator (2) until the indicator reads zero. Keep the dial indicator in this position by tightening collet (3) .
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Checking fuel setting (typical example) (2) 6V-3075 Dial Indicator (5) Synchronization pin (8) Fuel setting cover
Unscrew synchronization pin (5) by 25 mm (1 inch) or remove synchronization pin (5). Slowly move the governor or the actuator terminal shaft toward the fuel ON position until the flat face of the fuel stop lever is against the end of the fuel setting screw. The dial indicator reading will be the present fuel setting when the linkage is held in this position.Note: Refer to the TMI (Technical Marketing Information) for the correct fuel setting.
If the fuel setting is correct, remove the dial indicator and the synchronization pin. Install the two plugs, and install the synchronization pin back into cover (8) .
If the fuel setting needs adjustment, see "Fuel Setting Adjustment".
A mechanic with governor and fuel setting training is the ONLY one to make adjustments to the engine fuel setting.
Fuel Setting Adjustment
Cut the seal wire and remove fuel setting cover (8) and the gasket. Loosen locknut (7). Hold the fuel stop lever against the end of the fuel setting screw. Turn the fuel setting screw clockwise or counterclockwise until the correct reading is on the dial indicator.
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Adjustment of the fuel setting screw (typical example)
Now tighten locknut (7). Be sure that the fuel setting screw does not turn when the locknut is tightened. Release the fuel system linkage and move the linkage toward the fuel ON position. Check the dial indicator reading again in order to be sure that the fuel setting is still correct.
Remove dial indicator (2) and synchronization pin (5). Install the two plugs.
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Installed cover (typical example) (7) Locknut (8) Fuel setting cover
Put fuel setting cover (8) and the gasket in position over the fuel setting screw. Install the bolt and synchronization pin (5) in the cover. Install a new seal wire.