Crusader engines Marine Illustrated Parts Manual - MODEL MP454 XLi SERIAL NUMBER 101810 THRU 103880 & MODEL MP7.4L SERIAL NUMBER 103538 AND ABOVE

MARINE ILLUSTRATED PARTS MANUAL MODEL MP454 XLi SERIAL NUMBER 101810 THRU 103880 MODEL MP7.4L SERIAL NUMBER 103538 AND ABOVE L510008 10/01

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MODEL MP7.4L PARTS MANUAL - 1 CRUSADER MP7.4L Contents: Cylinder Block Assembly - Figure 1 ................................................................................................ 4 Crankshaft, Cam and Piston Assembly - Figure 2 ............................................................................. 6 Cylinder Head Assembly - Figure 3 ................................................................................................ 8 Oil Pan and Oil Pump Assembly - Figure 4 ..................................................................................... 10 Remote Oil Filter Assembly - Figure 5 ........................................................................................... 12 Intake Manifold Assembly - Figure 6 ............................................................................................. 14 Intake Manifold Components - Figure 7 ......................................................................................... 16 Return Type Fuel System - Figure 8 .............................................................................................. 18 Returnless Type Fuel System - Figure 9 ........................................................................................ 20 Delco Ignition Components - Figure 10 ......................................................................................... 22 Wiring Harness Assemblies - Figure 11 ......................................................................................... 24 Early Style ECM Assemblies - Figure 12 ....................................................................................... 26 Late Style ECM Assemblies - Figure 13 ........................................................................................ 28 Alternator Assembly (Mando) - Figure 14 ....................................................................................... 30 Starter Motor Components - Figure 15 .......................................................................................... 32 Exhaust Manifold Assembly - Figure 16 ......................................................................................... 34 Pulleys, Belts and Mounting Hardware - Figure 17 ........................................................................... 36 Raw Water Cooling Components - Figure 18 .................................................................................. 38 Engine Water Circulation Pump - Figure 19 .................................................................................... 40 Raw Water Cooling Pump - Figure 20 ........................................................................................... 42 Engine and Transmission Mounts - Figure 21 ................................................................................. 44 Bellhousing Assembly - Figure 22 ................................................................................................ 46 Transmission and Related Parts (Velvet Drive In-Line) - Figure 23 ...................................................... 48 Transmission and Related Parts (Velvet Drive “V”-Drive) - Figure 24 ................................................... 50 Transmission and Related Parts (Velvet Drive 5000) - Figure 25 ......................................................... 52 Transmission and Related Parts (Hurth Gear) - Figure 26 ................................................................. 54 Fresh Water Cooling Components 1 (Rear Mounted Exchanger) - Figure 27 ........................................ 56 Fresh Water Cooling Components 2 (Rear Mounted Exchanger) - Figure 28 ........................................ 56 Fresh Water Cooling Components 1 (Front Mounted Exchanger) - Figure 29 ........................................ 56 Fresh Water Cooling Components 2 (Front Mounted Exchanger) - Figure 30 ........................................ 56 Aluminum Oil Pan and Oil Pump Assembly - Figure 31 ..................................................................... 64 Engine Decals .......................................................................................................................... 65 “TYPICAL VIEWS ARE SHOWN” ENGINE ROTATION Engine Rotation is identified as “RH” or “LH” with the engine model number. Rotation always is determined from the flywheel end looking toward the front of the engine. In some instances, propeller shaft rotation may be opposite to that of the engine. When ordering a replacement engine, production block or parts for the engine, be certain to check engine rotation. DO NOT rely on propeller rotation in order to determine engine rotation. LEFT-HAND ROTATION is STANDARD ROTATION. (Flywheel turns counterclockwise when viewed from flywheel end of the engine.) RIGHT-HAND ROTATION is OPPOSITE ROTATION. (Flywheel turns clockwise when viewed from flywheel end of the engine.)

MODEL MP7.4L PARTS MANUAL - 2 CRUSADER MP7.4L Symbols shown throughout parts list are deﬁned here or on the bottom of the individual parts list page. AR = As Required OPT = Optional NSS = Not Serviced Separately NA = Not Available SS = Single Station Control DS = Dual Station Control OS = Oversize US = Undersize NS = Not Shown TBD = To Be Determined NI = Not Illustrated ====================================================================== ====================================================================== ITEM PART NUMBER DESCRIPTION QUANTITY 1 RB001006F Base Engine Assembly, 7.4L 1 HOW TO READ THIS PARTS BOOK: 1 2 3 4 ITEM NUMBER - This number corresponds with the number in the exploded view on the facing page. PART NUMBER - This is the designated part number for the particular component or assembly. DESCRIPTION - This identiﬁes what the component or assembly is. QUANTITY - This refers to the number of pieces used. 1 2 3 4

MODEL MP7.4L PARTS MANUAL - 3 CRUSADER MP7.4L REPLACEMENT PARTS: WARNING: Electrical, ignition and fuel system components on Crusader Engines are designed and manufactured to comply with U.S. Coast Guard rules and regulations to minimize risks of ﬁre or explosion. Use of replacement electrical, ignition and fuel system components which do not comply with these rules and regulations could result in a ﬁre or explosion hazard and should be avoided. MARINE TRANSMISSIONS: Crusader Engines are equipped with Velvet Drive or Hurth Transmissions or “V”-drives. If transmission parts are required, contact your dealer or closest Crusader Parts Distributor for required parts. Parts manuals and overhaul manuals are available through Crusader Distributors. GASKET AND DECAL KIT NUMBERS: Description Part Number Complete Engine Overhaul Gasket Set Valve Grind Gasket Set Oil Pan Gasket Set Intake Manifold Gasket Set On Board Spare Parts Kit MAINTENANCE ITEM PART NUMBERS: Description Part Number Oil Filter 22679 Fuel Filter 47038 Spark Plugs RPO30008 Spark Plugs (platinum) 49078 Spark Plug Wire Set 98171 Alternator Drive Belt 98210 Raw Water Pump Drive Belt 10258 ======================================================================

MODEL MP7.4L PARTS MANUAL - 4 CRUSADER MP7.4L CYLINDER BLOCK ASSEMBLY - FIGURE 1

MODEL MP7.4L PARTS MANUAL - 5 CRUSADER MP7.4L ITEM PART NUMBER DESCRIPTION QUANTITY * RB001006F Production Block Assembly 1 1 NSS Cylinder Case Assembly 1 2 R069066 Core Plug (1-1/4”) 6 3 7140480 Pin, dowel – aligning 2 4 7050200 Plug, camshaft bearing hole 1 5 7100330 Pin, dowel – aligning 4 6 RS3557 Plug, pipe (3/8”) 5 7 RS3552 Plug, pipe (1/4”) 4 8 R022021 Dowel, cylinder head aligning 4 9 7050090 Plug, oil vent 2 10 7050270 Plug, pipe 1 11 7050020 Cam Bearing #1 1 12 7050030 Cam Bearing #2 & #5 2 13 7050010 Cam Bearing #3 & #4 2 14 7050260 Bolt, main bearing cap (Short) 10 15 7050130 Bolt, main bearing cap (Long) 6 16 7050350 Stud, main bearing cap 4 17 7100470 Stud, oil pump attaching 1 18 7050120 Bearing, crankshaft main (STD) 4 18 7050790 Bearing, crankshaft main (.010 US) AR 18 7050800 Bearing, crankshaft main (.020 US) AR 19 7050150 Bearing, rear main (STD) 1 19 7050810 Bearing, rear main (.010 US) AR 19 7050820 Bearing, rear main (.020 US) AR 20 R047205 Oil Seal, rear main (LH ROT) 1 21 7050160 O-Ring, oil seal rear main cap 1 22 31131 Baffle Assembly, oil pan 1 23 Washer, baffle mounting stud 5 24 7150750 Nut, baffle mounting stud 5 25 7071060 Cover, crankcase front (Composite) 1 26 R047220 Oil Seal, front cover 1 27 7130260 Gasket, front cover1 28 7071250 Bolt, front cover 10 29 98173 Valve, pressure relief NOTE: Production block assemblies include all internal parts, cylinder head, intake manifold, flywheel, and circulating pump. CYLINDER BLOCK ASSEMBLY - FIGURE 1

MODEL MP7.4L PARTS MANUAL - 6 CRUSADER MP7.4L CRANKSHAFT, CAM AND PISTON ASSEMBLY - FIGURE 2

MODEL MP7.4L PARTS MANUAL - 7 CRUSADER MP7.4L ITEM PART NUMBER DESCRIPTION QUANTITY 1 7080200 Piston and Pin Assembly (STD) 8 1 7080210 Piston and Pin Assembly (.030 OS) AR 2 7080180 Ring Set, piston (STD) 8 2 7080100 Ring Set, piston (.030 OS) AR 3 RA011009 Connecting Rod Assembly 8 4 7080040 Bolt, connecting rod cap 16 5 7080050 Nut, connecting rod cap 16 6 7050190 Bearing Set, connecting rod (STD) 8 6 7050830 Bearing Set, connecting rod (.010 US) AR 6 7050840 Bearing Set, connecting rod (.020 US) AR 7 7070230 Crankshaft Assembly (LH ROT) 1 8 31143 Key, timing gear and balancer 2 9 RA138009A Flywheel Assembly (14”) 1 10 7070070 Ring Gear, flywheel 1 11 R009140 Bolt, flywheel to crankshaft 6 12 7071050 Camshaft Assembly (Roller Lifter) 1 13 7080160 Chain, camshaft timing 1 14 7071260 Sprocket, camshaft timing 1 15 7071270 Sprocket, crankshaft timing 1 16 30698 Bolt, sprocket to cam (3/4”) 3 17 7100330 Pin, camshaft sprocket 1 18 R109050 Camshaft Thrust Plate 1 19 7070700 Bolt, thrust plate retainer 2 20 7071080 Harmonic Balancer 1 21 7070060 Bolt, balancer to crankshaft 1 22 7070040 Washer, harmonic balancer bolt 1 CRANKSHAFT, CAM AND PISTON ASSEMBLY - FIGURE 2

MODEL MP7.4L PARTS MANUAL - 8 CRUSADER MP7.4L CYLINDER HEAD ASSEMBLY - FIGURE 3

Crusader engines Marine Illustrated Parts Manual - MODEL MP454 XLi SERIAL NUMBER 101810 THRU 103880 & MODEL MP7.4L SERIAL NUMBER 103538 AND ABOVE

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