Quantcast 3-72.  INJECTION TIMING

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TM 9-2815-225-34&P 3-72.  INJECTION TIMING THIS TASK COVERS: a.  Setup d.  Injection Timing Cylinder No. 3 b.  Injection Timing Cylinder No. 1 e.  Injection Timing Cylinder No. 5 c.  Changing Injection Timing INITIAL SETUP: APPLICABLE MODELS REFERENCES (TM) All None SPECIAL TOOLS TROUBLESHOOTING REFERENCES None Para. 2-8 TEST EQUIPMENT EQUIPMENT CONDITION Injection timing fixture (15434) 3375522 Cylinder head assemblies and pushrods installed (para. 3-71). MATERIALS/PARTS Gasket (as required) (15434) 3011878 SPECIAL ENVIRONMENTAL CONDITIONS (M915/Big Cam I) Work area clean and away from blowing dirt and Gasket (15434) 302000 (M915A1/Big Cam III) dust. Gasket (as required) (15434) 3020001, 3020002, 3020003, 3020004 GENERAL SAFETY INSTRUCTIONS (M915A1/Big Cam III) None PERSONNEL REQUIRED Automotive repairman MOS 63H LOCATION/ITEM ACTION REMARKS a.  Setup 1. Injection timing Install as follows: Use injection timing fixture fixture (14) (3375522). a.  Loosen piston and pushrod This is necessary to prevent dial indicator setscrews (1) and damage to both dial indicators (4).  Slide both dial indicators (6) during tool installation, and when and (16) to the uppermost position trying to locate Top Dead Center and tighten setscrews (1) and (4). (TDC). b.  Position timing fixture sleeve (13) with piston follower rod (11) into injector sleeve (10) of No. 1 cylinder. c.  Secure in two threaded holes Ensure injection timing fixture with two knurled holddowns (2). (14) is mounted straight on cylinder head (12). d.  Align pushrod follower rod (8) with injector pushrod (9). 3-566


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