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ToC 01 ENGINE SERVICE MANUAL MARINE ENGINES 01.00.05 Timing adjustment procedure for dismantled engine Function description: Time control of injection and valves are consistent due to the special camshaft design (3 cams per cylinder). During adjustment, pay attention to essential functional elements, such as unit injector, timing belt tension and sense of rotation of engine, in order to achieve the required setting accuracy of injection. A change of the timing belt tension or the sense of rotation during adjustment always causes wrong positioning of the injection control.For this reason it is to be ensured that the adjusting procedure follows the conditions of real operation. Status for job: * Camshaft housing cover dismantled. * Set up crankshaft to approx. 40° crank angle before TDC (piston; cylinder 1; in TDC) in order to set all pistons in the engine to approximately the same length of stroke, thus providinge open space for the valve movement (stroke). This ensures that the camshaft may be turned to the desired position (injection stroke - unit injector cylinder 1) without problems. 00.05 ill.1 * Crankshaft position with dismantled vibration damper. * Crankshaft position with mounted damper, if timing belt has not been removed. NOTE: Before disassembly, mark the vibration damper, with locked crankshaft. A corresponding marking must be made on the timing belt cover. * Unit injectors mounted and adjusted. See 03.02.02 and 03.02.06. 00.05 ill.2 * Valve clearance set. Special tool.: 2306031/4 dial gauge rail 4 cyl. 2306031/1 dial gauge rail 6 cyl. with bossed seal surface 2306031/6 dial gauge rail 6 cyl. with plane seal surface 2300899/0 dial gauge 2300641/1 probe pin VR00515/0 V-belt tightener 2300711/0 open end wrench VR00113/0 remover 2300551/2 locking pin 00.05 ill.3 Page ENGINE - 16 Z001019/0_6_July 2008
ToC SERVICE MANUAL MARINE ENGINES 01 ENGINE 1 Mount dial gauge rail with brackets 2306031/. (see list special tool) on studs at intake side of camshaft housing. 2 Insert dial gauge 2300731/0 with probe pin 2300641/1 in dial gauge rail and put probe pin onto unit injector-plunger guide cylinder 1. 3 Turn camshaft until the roller of rocker arm is located on base circle of injection cam. 00.05 ill.4 00.05 ill.5 4 Pre-set dial gauge to position 20 mm stroke (small pointer at 20 - inside scale, big pointer at 0 - outside scale). 00.00 00.05 ill.6 5 Slowly turn camshaft in direction of rotation until dial gauge shows a stroke of 2 mm (injection stroke at unit injector). Z001019/0_6_July 2008 Page ENGINE - 17
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STEYR MARINE ENGINES 4 CYLINDERS +
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PREFACE STEYR MOTORS GmbH has devel
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TABLE OF CONTENTS (MAIN ASSEMBLY GR
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05 Cooling system 05.01 Cooler, hea
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ToC SERVICE MANUAL MARINE ENGINES G
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°C °F 250 80 40 100 120 0 L MAIN
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