Quantcast Section III.  TESTS AND ADJUSTMENTS

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TM 9-2815-250-24&P Section III.  TESTS AND ADJUSTMENTS Paragraph Page Number Paragraph Title Number 3-17 Cylinder Compression Test .......................................................................................................... 3-56 3-18 Valve Adjustment......................................................................................................................... 3-58 3-19 Flow Control Valve Adjustment ..................................................................................................... 3-60 3-20 Injection Pump Test..................................................................................................................... 3-65 3-21 Fuel Injector Test......................................................................................................................... 3-66 3-22 Engine Speed Adjustment ............................................................................................................ 3-69 3-23 Oil Pressure Test......................................................................................................................... 3-70 Table 3-1..................................................................................................................................... 3-71 3-17.   CYLINDER COMPRESSION TEST. This Task Covers: Test Initial Setup: Tools/Test Equipment:    Cylinder compression tester (Item 7, Appendix G)    General mechanic's tool kit (Item 14, Appendix G) TEST NOTE The   cylinder   compression   test   is   used   to   determine   the   condition   of   valves, pistons,  piston  rings,  and  cylinders.    Any  pressure  difference  between  cylinders indicates a problem with one or more of these components. a. Run engine until thoroughly warm. b. Remove fuel injectors (para 3-14). NOTE Compression   tester   gage   reading   for   a   new   engine   turning   at   about   300   rpm should  be  approximately  350  to  400  psi  (2410  to  2758  kPa).    If  there  is  a  pressure difference between cylinders, refer to paragraphs 3-5 and 3-9 for repair procedures for valves, pistons, piston rings, and cylinders. c. Insert compression tester into fuel injector bore near cylinder no.  1 (2) (on flywheel side of engine). d. Crank engine and note compression reading on compression tester gage. 3-56


 


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