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Engine bottom end service (Harley Sportster XL1200)

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  • Harley
  • Sportster
  • XL1200
  • Engine and systems
  • Engine repair
  • Engine bottom end service
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Table 3-26. Engine in chassis: cam compartment service



SERVICE PROCEDURECOMPONENT REPAIR PROCEDURES
Remove parts necessary to gain access to all components above cylinder deck. See 3.13 TOP END OVERHAUL: DISASSEMBLY, Stripping Motorcycle for Top End Repair.
Continue with 3.13 TOP END OVERHAUL: DISASSEMBLY. Remove/repair subassembly components only if necessary.
Remove rocker arm outer covers. Remove crankcase breathers. See 3.13 TOP END OVERHAUL: DISASSEMBLY, Cylinder Heads.Inspect and repair as necessary. See 3.4 CRANKCASE BREATHING SYSTEM, XL Models or 3.4 CRANKCASE BREATHING SYSTEM, XR 1200X.
Remove pushrods, pushrod covers and tappet covers. See 3.13 TOP END OVERHAUL: DISASSEMBLY, Cylinder Heads. Remove tappets. See 3.17 BOTTOM END OVERHAUL: DISASSEMBLY, Tappets.Inspect and repair as necessary. See 3.22 BOTTOM END OVERHAUL: ASSEMBLY, Tappets.
Continue with 3.17 BOTTOM END OVERHAUL: DISASSEMBLY.
Remove gear case cover and cam gears. See 3.17 BOTTOM END OVERHAUL: DISASSEMBLY, Gearcase Cover and Cam Gears: XL Models or 3.17 BOTTOM END OVERHAUL: DISASSEMBLY. Oil Pump Housing/Gearcase Cover and Cam Gears: XR 1200X.*Inspect and repair as necessary. See 3.17 BOTTOM END OVERHAUL: DISASSEMBLY, Gearcase Cover and Cam Gears: XL Models or 3.17 BOTTOM END OVERHAUL: DISASSEMBLY, Oil Pump Housing/Gearcase Cover and Cam Gears: XR 1200X.
Remove oil pump components. See 3.20 OIL PUMP: XL MODELS or 3.21 OIL PUMP: XR 1200X.Inspect and repair as necessary. See 3.20 OIL PUMP: XL MODELS or 3.21 OIL PUMP: XR 1200X.
Complete all appropriate steps under 3.22 BOTTOM END OVERHAUL: ASSEMBLY.
Complete motorcycle assembly. See 3.16 TOP END OVERHAUL: ASSEMBLY, Assembling Motorcycle After Top End Repair.

* When this step is completed during bottom end service, advance to 3.22 BOTTOM END OVERHAUL: ASSEMBLY if no other work is to be done.

Table 3-27. Engine removed from chassis: flywheel compartment service or complete engine overhaul



SERVICE PROCEDURECOMPONENT REPAIR PROCEDURES
Remove engine from chassis. See 3.10 REMOVING ENGINE FROM CHASSIS.
Start 3.13 TOP END OVERHAUL: DISASSEMBLY. Remove and repair subassembly components as necessary.
Remove rocker arm outer covers. Remove crankcase breathers. See 3.13 TOP END OVERHAUL: DISASSEMBLY, Cylinder Heads.Inspect and repair as necessary. See 3.4 CRANKCASE BREATHING SYSTEM, XL Models or 3.4 CRANKCASE BREATHING SYSTEM, XR 1200X.
Remove cylinder heads. See 3.13 TOP END OVERHAUL: DISASSEMBLY, CylinderInspect and repair as necessary. See 3.14 CYLINDER HEAD.
Heads.
Remove pushrods and pushrod covers. See 3.13 TOP END OVERHAUL: DISASSEMBLY, Cylinder Heads. Remove tappet covers and tappets. See 3.22 BOTTOM END OVERHAUL: ASSEMBLY, Tappets.Inspect and repair as necessary. See 3.16 TOP END OVERHAUL: ASSEMBLY. Tappet Covers, Pushrod Covers and Pushrods.
Remove cylinders and pistons. See 3.13 TOP END OVERHAUL: DISASSEMBLY, Cylinder and Piston.Inspect and repair as necessary. See 3.15 CYLINDER AND PISTON.
Inspect upper connecting rod and repair as necessary. See 3.15 CYLINDER AND PISTON, Connecting Rod Bushings.
Continue with 3.17 BOTTOM END OVERHAUL: DISASSEMBLY. Remove and repair subassembly components as necessary.
Remove gearcase cover and cam gears. See 3.17 BOTTOM END OVERHAUL: DISASSEMBLY, Gearcase Cover and Cam Gears: XL Models or 3.17 BOTTOM END OVERHAUL: DISASSEMBLY. Oil Pump Housing/Gearcase Cover and Cam Gears: XR 1200X.Inspect and repair as necessary. See 3.17 BOTTOM END OVERHAUL: DISASSEMBLY, Gearcase Cover and Cam Gears: XL Models or 3.17 BOTTOM END OVERHAUL: DISASSEMBLY, Oil Pump Housing/Gearcase Cover and Cam Gears: XR 1200X.
Remove oil pump. See 3.20 OIL PUMP: XL MODELS or 3.21 OIL PUMP: XR 1200X.Inspect and repair as necessary. See 3.20 OIL PUMP: XL MODELS or 3.21 OIL PUMP: XR 1200X.
Complete all appropriate steps under 3.17 BOTTOM END OVERHAUL: DISASSEMBLY, Crankcase to split crankcases and remove flywheel assembly, piston jets, etc.Inspect and repair as necessary. See 3.19 CRANKCASE.
Inspect and repair transmission assembly as necessary. See 5.9 TRANSMISSION REMOVAL AND DISASSEMBLY, 5.10 TRANSMISSION ASSEMBLY, 5.14 TRANSMISSION INSTALLATION and related subjects.
Complete all appropriate steps under 3.22 BOTTOM END OVERHAUL: ASSEMBLY.
Complete all appropriate steps under 3.16 TOP END OVERHAUL: ASSEMBLY.
Install engine in motorcycle. Complete all appropriate steps under 3.11 INSTALLING ENGINE IN CHASSIS.
Complete motorcycle assembly. See 3.16 TOP END OVERHAUL: ASSEMBLY, Assembling Motorcycle After Top End Repair.
See this article in russian language
◀ Previous
Harley XL/XR1200 : Engine repair
Next ▶

Engine top end service
How to use engine repair section
Diagnosing smoking engine or high oil consumption
Cylinder leakage test
Cylinder compression test
Diagnosing valve train noise
Removing engine from chassis: XL models
Removing engine from chassis: XR 1200X models
Installing engine in chassis XL models
Installing engine in chassis XR 1200X models
Engine top end overhaul: disassembly
Cylinder head — disassembly
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XL/XR1200 (2012-2023) 
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