Chapter 1 General 3. Engine Outline 3JH2 Series 3JH25A/30A DIRECTION OF ROTATION DETAIL OF PULLY (VIEW FROM ARROW A) φ 134 4-M8 TAPPEDHOLES (DEPTH 12) pc φ 82.5 φ 63.5 ＋0.048 0 5 JOINT φ 8 FOR FO RETURN JOINT φ 8 FOR FO INLET 305 159 237.3 22 247.5 28.8 (VIEW FROM ARROW B) 445 70 4- φ 16.5 50 701.3 730.1 180.6 240 240 183.8 AHEAD 530 MIXING ELBOW PT 11/4 309.1 ASTERN 7.5 4- φ 10.5 4- φ 11 73 11 3 4 (PROPELLER SHAFT COUPLING) (OUTPUT SHAFT COUPLING) 7 φ 50 ＋0.025 0 35 237.5 680 pcφ 78 φ 100 442.5 33.5 31.5 6.5 4.5 SOLE PLATE pcφ 78 543 278 265 190.5 93 95 480 φ 100 φ 50 0 0.019 φ 40 SEA WATER INLET φ 26 119.5 φ 22 φ 52 Printed in Japan A0A1015-0302 Printed in Japan A0A1015-0302 1 - 8 - 1