Servicing Individual Components - KTM 990 Adventure Repair Manual

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5-1
5

SERVICING INDIVIDUAL COMPONENTS

INDEX
ROLLER BEARING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-2
MAIN BEARINGS - GENERAL INFORMATION . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-3
REPLACING BEARING SHELLS, OUTPUT END . . . . . . . . . . . . . . . . . . . . . . . . . . .5-4
REPLACING BEARING SHELLS, GENERATOR END . . . . . . . . . . . . . . . . . . . . . . . .5-4
REPLACING THE CONROD BEARINGS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-5
SELECTING THE BEARING SHELLS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-5
REPLACING THE SUPPORTING BEARINGS IN THE CLUTCH COVER . . . . . . . . . . . .5-6
OVERHAULING THE WATER PUMP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-7
CHECKING THE SUCTION PUMP FOR WEAR . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-8
CHECKING THE PRESSURE PUMP FOR WEAR . . . . . . . . . . . . . . . . . . . . . . . . . .5-8
BYPASS VALVE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-8
DISASSEMBLING THE CYLINDER HEAD AND CHECKING
PARTS FOR WEAR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-9
CHECKING THE PISTONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-10
ASSEMBLY INSTRUCTIONS FOR PISTON RINGS . . . . . . . . . . . . . . . . . . . . . . . .5-10
CHECKING THE PISTON RING END GAP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-10
MEASURING PISTONS + CYLINDERS, ESTABLISHING THE PISTON
MOUNTING CLEARANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-10
PISTON AND CYLINDER IDENTIFICATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-11
ASSEMBLING THE CYLINDER HEAD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-11
GENERATOR COVER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-13
TORQUE LIMITER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-13
VALVE GEAR – CHECKING PARTS FOR WEAR . . . . . . . . . . . . . . . . . . . . . . . . . .5-13
PREASSEMBLING THE SPREADER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-14
CLUTCH – CHECKING PARTS FOR WEAR . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-15
SHIFT MECHANISM – CHECKING PARTS FOR WEAR . . . . . . . . . . . . . . . . . . . . .5-16
PREASSEMBLING THE SHIFT SHAFT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-16
GENERAL INFORMATION ON SERVICING THE TRANSMISSION . . . . . . . . . . . . . .5-17
ASSEMBLING THE MAIN SHAFT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-17
ASSEMBLING THE COUNTERSHAFT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-18
CHECKING THE FREEWHEEL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-19
REPLACING THE FREEWHEEL HUB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-19
STARTER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-19

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