TM 9-6115-668-135.54 CHECKING AND ADJUSTING VALVES.This task covers:a. Removalb. Adjustmentc. InstallationINITIALSETUPToolsEquipmentConditionsGeneral Mechanic's Tool KitReference(item 2, appendix B) Generator Set 150kw shutEngine Cranking Gear (PN 100300) down.Mandrel (PN 190200) paragraph 2.5.2WARNINGDisconnect the negative battery cable first and then the positive battery terminalcables. Failure to observe this warning could result in severe personal injury ordeath.REMOVAL1.Remove eight screw caps (1. figure 5-56), eight packing preform (2), eight 0-ring t3), eight valve cover (4), andeight gaskets (5).NOTEEngine must be cooled at least 3 hours.ADJUSTMENT1.Turn engine using Engine Cranking Gear (PN 100300) or Mandrel (PN 190200) until valves of number onecylinder overlap.NOTEValve overlapping means Exhaust valve is about to close and the Intake valve isabout to open. Both pushrods are now non-rotatable.2.Check valve clearance for valves marked in black (fig 5-57), using a feeler gauge (2, fig 5-59). Gauge should justslide into gap (3, fig 5-60) between rocker arm lug (4) and valve (5):Intake valve (I) 0.2 mmExhaust valve (E) 0.3mm3.If gap is too small or too large. loosen locknut (1, fig 5-60) one or two turns and turn adjusting screw and turnadjusting screw (2) with a screwdriver (1, fig 5-59); once locknut is tightened gauge should slip out with littleresistance.4.Turn crankshaft 360 degrees so that number seven cylinder is overlapped.Change 2 5-239
Integrated Publishing, Inc. - A (SDVOSB) Service Disabled Veteran Owned Small Business
