REMOVAL OF COVER

TM-5-3805-260-24 Scraper Tractor: Elevating Self-Propelled 11 Cubic Yard Sectionalized and Nonsectionalized Manual
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TM 5-3805-260-24 22. Turn the crankshaft. slow, in a counter clock- wise direction. Do this until the ]low, of fuel from the end of tube assembly (9) is 12 to 18 drops per minute. 23. Stop rotation of the crankshaft *when the flow of fuel is 12 to 18 drops per minute. Take a reading of the measurement on dial indicator (3). 24. To check for correct timing of the fuel system, make a comparison of the reading on dial indicator (3) with the correct measurement in the chart. Timing must be set within - I" of correct timing angle. TIMING ANGLE INDICATOR READING 16’ 127 In. 3 23 mm NOTE: If the timing of the fuel system is different than the correct timing dimension given in the chart, see the subject CHECKING TIMING BY TIMING PIN METHOD. Checking Automatic Timing Advance Unit By Timing Light Method Tools Needed: 1P3500 Injection Timing Group or 2P8280 Injection Timing Group Either group can be used to check the automatic timing advance. 1P3500 INJECTION TIMING GROUP NOTE: When either of these injection timing groups is used, the cap from the 9N3979 Nozzle Assembly must be removed. This will let fuel bleed from the cap end of the nozzle, and will maintain line pressure in the normal range. CAUTION Do not use the engine in service with the cap removed from the nozzle. The fuel will drain into the crankcase and the result will be thin oil (oil dilution). Also a new 1H1023 Seal must be used when the cap is installed. FUEL SETTING Tools Needed: 5P4203 Field Service Tool Group The procedure that follows for fuel setting can be done with the housing for the fuel injection pumps either on or off the engine. REMOVAL OF COVER 1. Shut-off solenoid. 2. Cover. CAUTION Before any service work is done on this fuel system, the outside of the housing for the fuel injection pumps and all parts connected to it must be especially clean. 1Remove shut-off solenoid (1) and cover (2). 2. Put the 5P298 Zero Set Pin (5), with 17.8507 on it, in the pump housing. INSTALLATION OF COVER 3. 5P4226 Adapter. 4. 3J6956 Spring. 5. 5P298 Zero Set Pin, with 17.8507 on it. 2-53

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