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6. CYLINDER HEAD/CAM DRIVE
6999-0003 7/15/99
6-1
SERVICE INFORMATION
GENERAL
The 85 cu. in. X-Twin
engine has two camshafts and four valves per cylinder head. Each cylinder head is serviced
by a seperate inverted tooth "silent" cam chain.
Each cam chain is driven by a combination gear/sprocket that engages the crankshaft in the timing chest. Each cam
chain runs along two chain guides located in a tunnel cast into each cylinder. The cam chain tension is automatically
adjusted. Each cam chain drives a combination gear/sprocket that engages both camshafts in a cylinder head.
Each camshaft services either both intake valves or both exhaust valves in the cylinder head. The cam lobes run
against self-adjusting hydraulic lifters to open the valves.
Notice
• To gain access to the cylinder head, valves, camshafts and cam drive components, the engine must be
removed from the frame
(see Chapter 5. ENGINE REMOVAL/INSTALLATION)
.
• When servicing cylinder head components, or multiple cylinder heads simultaneously, mark the
disassembled parts to ensure they are reinstalled in their original location.
• Lubricate all moving parts with clean engine oil or an assembly lubricant when reassembling cylinder head.
WARNING
To avoid blowing debris into your eyes and face, wear eye and face protection when working with compressed air.
SERVICE INFORMATION . . . . . . . . . . 6-1
TROUBLESHOOTING . . . . . . . . . . . . . 6-3
COMPRESSION TEST. . . . . . . . . . . . . 6-4
CYLINDER HEAD/CAM DRIVE . . . . . . 6-5
REMOVAL . . . . . . . . . . . . . . . . . . . . . . . . 6-5
DISASSEMBLY . . . . . . . . . . . . . . . . . . . . 6-8
INSPECTION . . . . . . . . . . . . . . . . . . . . . . 6-9
VALVE GUIDE REPLACEMENT . . . . . . 6-17
VALVE SEAT REFACING . . . . . . . . . . . 6-18
ASSEMBLY . . . . . . . . . . . . . . . . . . . . . . 6-20
CAMSHAFT/GEAR REPLACEMENT . . 6-21
INSTALLATION . . . . . . . . . . . . . . . . . . . 6-21
CYLINDER TIMING . . . . . . . . . . . . . . . . 6-22
Содержание HCX 1999
Страница 1: ......
Страница 5: ...FOREWORD 6999 0003 7 15 99 iii...
Страница 7: ...6999 0003 7 15 99 v...
Страница 8: ...1 0 6999 0003 7 15 99 ROUTINE MAINTENANCE 1...
Страница 10: ...1 2 6999 0003 7 15 99 ROUTINE MAINTENANCE TROUBLESHOOTING MAINTENANCE INTERVALS...
Страница 18: ...1 10 6999 0003 7 15 99 ROUTINE MAINTENANCE...
Страница 19: ...ROUTINE MAINTENANCE 6999 0003 7 15 99 1 11...
Страница 20: ...ROUTINE MAINTENANCE NOTES 6999 0003 7 15 99 1 12...
Страница 21: ...ROUTINE MAINTENANCE 6999 0003 7 15 99 1 13...
Страница 22: ...2 0 6999 0003 7 15 99 BODY EXHAUST 2...
Страница 37: ...BODY EXHAUST 6999 0003 7 15 99 2 15...
Страница 38: ...3 0 6999 0003 7 15 99 LUBRICATION SYSTEM 3 10732...
Страница 49: ...LUBRICATION SYSTEM NOTES 6999 0003 7 15 99 3 11...
Страница 50: ...4 0 6999 0003 7 15 99 ENGINE CONTROL SYSTEM 4...
Страница 206: ...5 0 6999 0003 7 15 99 ENGINE REMOVAL INSTALLATION 5...
Страница 208: ...5 2 6999 0003 7 15 99 ENGINE REMOVAL INSTALLATION TROUBLESHOOTING...
Страница 235: ...ENGINE REMOVAL INSTALLATION 6999 0003 7 15 99 5 29...
Страница 236: ...5 30 6999 0003 7 15 99 ENGINE REMOVAL INSTALLATION...
Страница 237: ...ENGINE REMOVAL INSTALLATION 6999 0003 7 15 99 5 31...
Страница 238: ...5 32 6999 0003 7 15 99 ENGINE REMOVAL INSTALLATION...
Страница 239: ...ENGINE REMOVAL INSTALLATION 6999 0003 7 15 99 5 33...
Страница 240: ...5 34 6999 0003 7 15 99 ENGINE REMOVAL INSTALLATION...
Страница 241: ...ENGINE REMOVAL INSTALLATION 6999 0003 7 15 99 5 35...
Страница 242: ...5 36 6999 0003 7 15 99 ENGINE REMOVAL INSTALLATION...
Страница 243: ...ENGINE REMOVAL INSTALLATION 6999 0003 7 15 99 5 37...
Страница 244: ...5 38 6999 0003 7 15 99 ENGINE REMOVAL INSTALLATION...
Страница 245: ...ENGINE REMOVAL INSTALLATION NOTES 6999 0003 7 15 99 5 39...
Страница 246: ...6 0 6999 0003 7 15 99 CYLINDER HEAD CAM DRIVE 6...
Страница 274: ...7 0 6999 0003 7 15 99 CYLINDER PISTON 7...
Страница 292: ...8 0 6999 0003 7 15 99 CRANKCASE CRANKSHAFT 8...
Страница 308: ...9 0 6999 0003 7 15 99 PRIMARY DRIVE 9 10794...
Страница 316: ...10 0 6999 0003 7 15 99 CLUTCH 10 10758...
Страница 333: ...CLUTCH NOTES 6999 0003 7 15 99 10 17...
Страница 334: ...11 0 6999 0003 7 15 99 TRANSMISSION 11 10822...
Страница 352: ...12 0 6999 0003 7 15 99 WHEELS 12 10736...
Страница 373: ...WHEELS NOTES 6999 0003 7 15 99 12 21...
Страница 374: ...13 0 6999 0003 7 15 99 FRONT SUSPENSION STEERING 13...
Страница 392: ...14 0 6999 0003 7 15 99 REAR SUSPENSION 14...
Страница 398: ...14 6 6999 0003 7 15 99 REAR SUSPENSION StepNumber 1 2...
Страница 399: ...REAR SUSPENSION 6999 0003 7 15 99 14 7...
Страница 400: ...15 0 6999 0003 7 15 99 BRAKES 15...
Страница 420: ...16 0 6999 0003 7 15 99 BATTERY CHARGING SYSTEM 16...
Страница 431: ...BATTERY CHARGING SYSTEM NOTES 6999 0003 7 15 99 16 11...
Страница 432: ...17 0 6999 0003 7 15 99 STARTER 17 10722...
Страница 443: ...STARTER NOTES 6999 0003 7 15 99 17 11...
Страница 444: ...18 0 6999 0003 7 15 99 LIGHTS GAUGES SWITCHES 18...
Страница 472: ...18 28 6999 0003 7 15 99 LIGHTS GAUGES SWITCHES...
Страница 474: ...WIRING SCHEMATIC NOTES 19 2 6999 0003 7 15 99...