6-1
INSPECTION AND REPAIR OF BASIC ENGINE
1. Inspecting and repairing cylinder head
and valve mechanism .....................6-2
1.1 Measuring clearance between rocker
bushing and rocker shaft.......................... 6-2
1.2 Measuring valve stem outside diameter and
valve guide inside diameter ..................... 6-2
1.3 Replacing valve guide.............................. 6-3
1.4 Inspecting valve face ............................... 6-4
1.5 Refacing valve face.................................. 6-4
1.6 Refacing valve seat.................................. 6-5
1.7 Replacing valve seat................................ 6-6
1.8 Lapping valve and valve seat................... 6-7
1.9 Measuring perpendicularity and free length of
valve spring.............................................. 6-7
1.10 Measuring distortion of the bottom surface of
the cylinder head...................................... 6-8
1.11 Measuring pushrod runout....................... 6-8
1.12 Removing combustion jet......................... 6-9
2. Inspecting and repairing flywheel..6-10
2.1 Measuring flatness of flywheel............... 6-10
2.2 Measuring flywheel face and
radial runouts ......................................... 6-10
2.3 Inspecting ring gear ............................... 6-10
2.4 Replacing ring gear................................ 6-10
2.4.1 Removing ring gear..................................6-10
2.4.2 Installing ring gear....................................6-10
3. Inspecting and repairing timing gear and
camshaft........................................6-11
3.1 Measuring timing gear backlash ............ 6-11
3.2 Measuring idler gear and camshaft gear
end play ................................................. 6-11
3.3 Measuring cam lift.................................. 6-11
3.4 Measuring camshaft runout ................... 6-12
3.5 Measuring camshaft journal
outside diameter .................................... 6-12
3.6 Measuring camshaft hole (bushing)
inside diameter....................................... 6-12
3.7 Replacing camshaft bushing.................. 6-13
3.7.1 Removing camshaft bushing....................6-13
3.7.2 Installing camshaft bushing......................6-13
3.8 Measuring idler bushing inside diameter and
idler shaft outside diameter.................... 6-13
3.9 Replacing idler shaft .............................. 6-14
3.10 Measuring clearance between tappet and
tappet guide hole ................................... 6-14
3.11 Inspecting tappet.................................... 6-14
3.11.1 Contact surface of camshaft.................... 6-14
3.11.2 Contact surface of pushrod ..................... 6-14
3.12 Inspecting V-belt groove wear................ 6-15
4. Inspecting and repairing piston,
connecting rod, crankshaft and
crankcase .....................................6-16
4.1 Measuring crankcase top surface
distortion................................................. 6-16
4.2 Measuring cylinder inside diameter........ 6-17
4.3 Measuring piston outside diameter ........ 6-18
4.4 Measuring piston ring end gap............... 6-18
4.5 Measuring clearance between piston ring
groove and piston ring............................ 6-19
4.6 Measuring piston pin bore diameter and piston
pin outside diameter............................... 6-19
4.7 Measuring piston protrusion................... 6-20
4.8 Measuring clearance between connecting rod
bearing and crankpin.............................. 6-21
4.9 Measuring clearance between connecting rod
bushing and piston pin ........................... 6-21
4.10 Replacing connecting rod bushing......... 6-22
4.11 Inspecting connecting rod bend and twist6-22
4.12 Inspecting connecting rod bearing ......... 6-23
4.13 Measuring connecting rod end play .......6-23
4.14 Weight difference of connecting rod assembly
in one engine.......................................... 6-23
4.15 Measuring crankshaft journal
outside diameter..................................... 6-24
4.16 Measuring crankshaft crankpin
outside diameter..................................... 6-24
4.17 Grinding crankshaft................................ 6-25
4.18 Measuring crankshaft end play.............. 6-26
4.19 Measuring crankshaft runout.................. 6-26
4.20 Replacing crankshaft gear ..................... 6-27
4.20.1 Removing crankshaft gear....................... 6-27
4.20.2 Installing crankshaft gear......................... 6-27
4.21 Inspecting oil seal contact surface ......... 6-27
4.22 Installing oil seal sleeve ......................... 6-28
4.23 Removing oil seal sleeve ....................... 6-28
4.24 Inspecting main bearing surface ............ 6-29
4.25 Measuring clearance between main bearing
and crankshaft journal............................ 6-29
To Next Page
Loading...
Need help?
General
