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How do you adjust the valves on a 1985 nissan 4x4 truck

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Posted on Sep 06, 2010

  • Jonah Oneal Sep 06, 2010

    THE VALVES ADJUSTMENT CAN BE MADE WITH ENGINE HOT OR COLD.INTAKE VALVE CLEARANCE IS 0.008 - 0.012 INCH - 0.30MM THE EXHAUST VALVE CLEARANCE 0.009 - 0.012 INCH - 0.30MM - TO ADJUST VALVES FIRST YOU NEED A BOX END WRENCHES WITH OFF SET.CHOOSE CORRECT SIZE WRENCH. YOU NEED A FLAT HEAD SCREW DRIVER. AND A FLAT BLADES FEELER GAUGE. FIRST OF ALL.DISCONNECT THE NEGATIVE BATTERY CABLE.REMOVE THE VALVE COVER.USING A SOCKET WRENCH ON THE CRANKSHAFT PULLEY BOLT. ROTATE THE CRANKSHAFT UNTIL THE NUMBER 1 CYLINDER IS ON THE TDC OF THE COMPRESSION STROKE BOTH CAM LOBES ON NUMBER 1 WILL BE DOWN. CHECK AND OR ADJUST VALVES 1 2 4 AND 6 LOOSEN LOCKNUT ADJUST THE VALVE AND TIGHTEN THE LOCKNUT TO 16 FT LBS.CHECK THE CLEARANCE AGAIN AFTER TIGHTENING THE LOCKNUT.ROTATE THE CRANKSHAFT 180 DEGREES TO POSITION THE NUMBER 4 CYLINDER ON THE TDC OF ITS COMPRESSION STROKE.BOTH CAMSHAFT LOBES WILL BE POINTED DOWN.ADJUST VALVES 3 5 7 AND 8 AND CHECK AGAIN WITH THE LOCKNUT TIGHTENED. CLEAN THE GASKET MOUNTING SURFACES AND INSTALL THE ROCKER ARM COVER WITH A NEW GASKET.

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Posted on Jan 02, 2017

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