1970 CCW 340 Service Manual - Vintage Snow

More documents

Recommendations

Info

TABLE OF CONTENTSSECTIONPAGEINTRODUCTION AND TECHNICAL DATA . .... . 1-11.1 Introduction .... ... ... .. .. . .. . . . .... 1-11.6 Model Designation . . ..... ............. 1-11.8 Technical Data ............... . ...... 1-11.9 Tools, Special & Standard Requirement ... 1-1ILLUSTRATION OF SPECIAL TOOLS . . ..... . .. 1-1SECTION3.3 .93.3.103.3.113.3.123 .3.133.3.14PAGEFlywheel Assembly . . . . . . .. ... . . . . . ... 3-9Cylinder Heads and Cylinders . .. . ... . ... 3-9Pistons, Pins and Rings .... . . .. .. .. .. . . 3-9Crankshaft and Connecting Rods . .... . . . 3-9Crankcase .. ..... .. .. . .. . . .. . .. . .. .. 3-9Fits and Tolerances .. _. . .. . ..... .. .... 3-9IIIllOPERATION AND SERVICE INSTRUCTIONS .. .. 2-12.1 Principles of Operation ...... . ...... . .. 2-12.2 Sequence of Operation ....... .. . . . . . .. 2-12.3 Ignition Systems ...... ............. . . 2-22.3.1 General .......... ...... .. .. . . . . . .. . 2-22.3.2 Description . . ........... .. . . . ..... . . 2-22.3.2.1 Sawafuji Ignition (Magneto) . . ...... . ... 2-22.3.2.2 Kokusan Ignition (Magneto) . . . . . .. .. ... 2-22.3.3 Operation . .. . . . . ... . .. . .. . ...... . . . 2-22.4 Detonation and Pre-Ignition ...... . . .... 2-22.4.4 Pre-Ignition ...... . . . . ........ . . . . .. . 2-42.5 LIGHTING SYSTEMS .... .. ... . . . . ... 2-42.5.2 Operation of Lighting Systems . ....... . . 2-42.5.2.1 Engines previous to Serial Numbers Model340-2903614 and Model 400-2809570 ... ... . 2-42.5.2.2 Engines Serial Numbers Model 340-G-E 2903614 and Model 400-S-G-E 2809570and subsequent . . . . . ..... ... ..... . . .. 2-42.5.2.3 Model 340S only. Engines with serial numbers2903614 & subsequent. See fig. 2-12 .. . .. 2-72.6 PERIODIC SERVICING ........... . ... 2-72.6.1 Spark Plugs . . .. .......... . . . ... . ... . 2-72.6.2 Fan Belt .......... . .. ...... . . . . ... . 2-72.6.3 Trouble Shooting .... ... ..... . .. . ... . 2-72.7 OPERATING INSTRUCTIONS . .... ... 2-192.7.2 Starting the Engine ..... . . .... _. . .. . . 2-192.7.2.1 Starting with recoil starter ..... . . . . .... 2-192.7.2.2 Starting with electric starter .. . . . ... . . . 2-192.7.3 Stopping the Engine _..... .. .... . .... 2-192.8 Lubrication .......... .......... . ... 2-19DISASSEMBLY, CLEANING AND INSPECTION .. . 3-13.1 PREPARATION FOR DISASSEMBLY .... 3-13.2 DISASSEMBLY ................ .. ... 3-13.3 CLEANING AND INSPECTION ... ... ... 3-73.3.13.3.23.3.33.3.43 .3.53.3.63.3.73.3.8Cleaning ........................... 3-7Inspection ...... . ....... .. . ... . . . ... 3-7General ..... . ........ . .. . ..... ..... 3-7Spark Plugs ... . .......... . .......... 3-7Fan Cover .. . . . . .. .......... . .. . ... . 3-7Recoil Starter . . ..... . . . .. .. . .. . . . ... 3-7Electric Starter . . . ... ...... . . .. . _ .. . . 3-7Magneto Assembly ... . .. .. . ........ .. 3-7IVvREPAIR AND REPLACEMENT .... ........ . . .. 4-14.14.24.34.44.54.64.6. 14 .6.24.74.7.14.7.24 .84.8.1GENERAL ................. ........ 4-1FAN COVER .... ... . ... .... . ...... . 4-1RECOIL STARTER . .. .... . ..... ..... 4-1FLYWHEEL ASSEMBLY (340S) . . . . . ... 4-5FLYWHEEL ASSEMBLY (340E, 340G,400) ..... - .... . .. ... .. . - . . . . . . . . . . 4-5STATOR ASSEMBLY (340S) . . . .. ... . . . 4-5Contact Breaker Point Set . ..... . .. . . . . . 4-5Condenser and Oil Felt Pad .. .. . . . . .. . . 4-10STATOR ASSEMBLY (340E, 340G, 400). 1-10Contact Breaker Point Set .. ........ ... 4-10Condenser and Oil Felt Pad ......... . .. 4-10CRANKSHAFT .. .... ..... . ........ . 4-10Oil Seal and Outer Bearing . ... ... .. ... 4-10REASSEMBLY, TESTING AND ADJUSTMENTS . . 5-15.1 GENERAL ........ ....... ..... . . . .. 5 -15.2 REASSEMBLY .. ... . .. .... . ......... 5-15.2.1 Crankcase and Crankshaft . .... _. . ... .. . 5-15.2.2 Pistons, Pins and Rings .. .... .... . . .... 5-15.2.3 Cylinders . .. ..... .. . .. .. ... . . .. . . . . . 5-25.2.45.2.55.2.65.2.75.2.85.2.95.2.10Cylinder Heads .. . .. . . . . . . . ... . .... . . 5-4Stator Assembly . . . . ..... . . . . .. . ... .. 5-5Fan Cover Case and Flywheel .... . .. . . .. 5-5Fan Cover, Starter Cup andFan Belt Pulley ......... . _ ... . . _ . . . .. 5-6Electric Starter ....... . .... . .. ...... . 5-7High Tension Ignition .. . . . .... ........ 5-7Recoil Starter ........... . .. . . . ...... 5-75.2.11 Intake and Exhaust Manifolds ...... ... .. 5-75.2.12 Covers . . .. . . . ....... .. .. . ..... . .... 5-75.2.13 Engine Installation .. . ....... . ... .. . .. 5-75.3 TESTING AND OVERHAUL .. . . . .... .. 5-75.45.4.15.4.25.4.35.4.45.4.4.15.4.4.25.4.4.3ADJUSTMENTS . . . .... .. ..... ... .... 5-7Carburetor ............... .. .. .... ... 5-7Spark Plugs . . .. ..... .... . . ... . ...... 5-7Contact Breaker Point .... . . ........ ... 5-7Engine Ignition Timing .... . . . ........ . 5-7Preferred Method ... .. ... . _... . ...... 5-7Alternate Method .. . . . ....... . .. .. .. . 5-8Crankshaft Angle Versus Piston Travel .... 5-8
cSECTION 1INTRODUCTION AND TECHNICAL DATA--......_.1.1 INTRODUCTION1.2 This manual co nta ins instructions for the operation,service, and repair of Canadian Curtiss-Wright CCW 340 andCCW400 two cycle engines.1.3 The model CCW340/400 engine is shown in Figure 1-1.One illustration is used, since the two engines are sim ilar inexternal appearance. These engines are designed for use invarious snowmobi le configurations and are suitable for use inAll Terrain Vehicles or simil ar app lications.1.4 The instructions detail the procedures and tools requiredto ensure efficient operation, servicing and rep air ofthe engine and component parts. Refer to Parts Catalogue fortool cross-reference.Engine nuts, bolts and threads are metric except for theengine mounting bolts, which are 7/16" SAE coarse, and thepower take off (P.T.O.) end of the crankshaft which is 1/2"SAE fine (20TPI).1.5 Carburetion data for the engine models covered in thismanual is detailed under sepa rate instructions. For carburetortechnical requirements refer to Appendix I, or toapplicab le manufacturer's specifications.1.6 MODEL DESIGNATION1.7 The letters and numbers in the subject engine modelsdesignate the following: -ccw340/400Manufacturer's type designation.Cubic centimeter displacement- S Manual Start- E Electric Starter- G Geared flywheel (for subsequent electricstarter installation.SER IAL NOS. MODEL YEARCOMMENC IN G18 ccw 400 196919 ccw 340 196928 ccw 400 197029 ccw 340 19701-1NOTESa. Model 340S includes a Sawafuji ignition system comprisingof one low tension generati ng coil and two high tensioncoils of opposite polarity. This system is not interchangeablewith other models.b. Models 340E, 340G, and 400 includes a Kokusan ignitionsystem comprising of two low tension generating coils andtwo high tension coils all of the same polarity. This systemmay be interchanged between all models excepting 340S.c. The model 400 uses a smaller fan pulley than the 340models and has an increased bore size to 65 mm. The pistonstroke is the same in both engines.1.8 TECHNICAL DATATable 1-1 details specificatio ns appl icable to the modelsCCW 340 and CCW 400 engines.1.9 TOOL REQUIREMENTThe following is a list of too ls required for the overhaul andadjustment of models CCW 340 and CCW 400 engines:a. Special Tools ReferenceTool, Flywheel puller Part 43-0790-90 Para. 3.2. 1 ( 1)Tool, Main Spring, Starter Rewind. 43-0797-60 Para. 4.4Tool, Bearing puller (crankshaft). Part 43-0791 -70 Para. 4.8.1Tool, Flywheel Locking. Part43-0798-40 Para. 3.2.1 (j)Tool, Fan Pulley Locking. 43-0792-50 Para. 4.2.1 (a)b. Standard Tools10/13 mm spanner13/21 mm Box spanner and hand le22 mm spanner22 mm socket wrench and ratchetPiston ring removal toolPiston ri ng compresso rPiston ring groove cleaning toolCirclip removal toolTorque wrench (pounds feet)Dial indicatorDegree wheelFeeler GaugeSpark plug tapSpark plug wire gaugeThread Cleaning toolsWire brush (spark plugs)Soft metal (non ferrous)scraperPh ill ips screw driver setCommon screw driversSoft hammer
Page 1 and 2: TECHNICALSERVICE MANUALOPERATION, S
Page 3: •• • 5-10LIST OF ILLUSTRATION
Page 7 and 8: CCWTOOLLIST43-0797-60REWIND SPRING
Page 9 and 10: TABLE OF CONTENTSSECTIONPAGEINTRODU
Page 11 and 12: -SECTION 1INTRODUCTION AND TECHNICA
Page 13 and 14: CCWTOOL LISTc43-0797-60REWIND SPRIN
Page 15 and 16: SECTION ncOPERATION AND SERVICE INS
Page 17 and 18: -IcPOINTSErL.T.COILTO1-IGNITION1 -S
Page 19 and 20: II~I I~I .I~I IFig. 2-4340 S-G400 S
Page 21 and 22: 2. Two Headlamps 12V35W - Two Tail
Page 23 and 24: • Ic--p·- -~ ~~, · .: :' . ...i
Page 25 and 26: ( } ( ' rTO PO INTS-,IIITOICrN ITIO
Page 27 and 28: l-ITo I GN Iii ON COILS~--------r--
Page 29 and 30: )----,---------l;;-----------------
Page 31 and 32: corTABLE 2.1TROUBLE SHOOTING CHARTM
Page 33 and 34: TABLE 2.1TROUBLE SHOOTING CHART3. F
Page 35 and 36: SECTION mccDISASSEMBLY, CLEANING AN
Page 37 and 38: Fig. 3-4 Starter cup and fan belt p
Page 39 and 40: ccStator a·ssemblyi ------Fig. 3-8
Page 41 and 42: cco. Refer to Section IV, Figure 4-
Page 43 and 44: cserviceable condition, the condens
Page 45 and 46: SECTION 1VQREPAIR AND REPLACEMENTcc
Page 47 and 48: 61. Starter pulley 12. Case2. Retai
Page 49 and 50: c--·-reel in an anti-clockwise dir
Page 51 and 52: 22526 27-~~ ,~--! 1424 ~ ~~12fill @
Page 53 and 54: c1. Crankshaft ass'y 8. Piston ring
Page 55 and 56:
SECTION VREASSEMBLY, TESTING AND AD
Page 57 and 58:
ccrankcase to steady the piston. Us
Page 59 and 60:
c5.2.5 Stator Assembly (See Figure
Page 61 and 62:
cb. If a window plate was removed d
Page 63 and 64:
cFig. 5·14Setting Engine Ign ition
Page 65 and 66:
c' ~
show all

1970 CCW 340 Service Manual - Vintage Snow

You also want an ePaper? Increase the reach of your titles

Delete template?

Save as template?