Raider 50 HP TLDI, Service Manual

Page: 23 / 193

2-4
Service limit Servicing procedure
0.8 mm (0.031 in) or more
0.9 mm (0.035 in) or more
Replace with new piston ring if cylinder liner wear has
not yet exceeded the repair limit.
0.05 mm (0.002 in) or more Replace with new crankshaft.
2 mm (0.08 in) or more Replace with new crankshaft assembly.
Scratch depth or distortion is 0.03 mm (0.0012 in) or more Repair by polishing the surface plate, starting with #240
to #400 grit sandpaper and finishing with #600 grit
sandpaper.
Scratch depth or distortion is 0.03 mm (0.0012 in) or more
When the cylinder liner cannot be repaired using #400 to
#600 sandpaper due to excessive scratching or scoring or
when the difference between the maximum and minimum
points of wear in liner bore is 0.06 mm (0.0024 in) or more
• Repair by polishing the surface plate, starting with #240
to #400 grit sandpaper and finishing with #600 grit
sandpaper.
• Bore and hone to 068.55 (2.699 in) +
0 to 0.02 mm (0 to
0.0008 in). Check ports and grind if necessary.
Use oversize pistons and piston rings.
1) When difference in compression between cylinders
exceeds lOOKPa
(1.05 kg/cm
2
, 14.5 psi)
2) When abnormally higher than standard value
1) Bore and hone to 068.55 (2.699 in) + 0 to 0.02
mm (0 to 0.0008 in). Check ports and grind if necessary.
Use oversize pistons and piston rings.
2)
Remove carbon from piston crown and cylinder
head surfaces and clean exhaust gas bypass valve.
No longer conforms to standard value Replace with new part.
Valve reed fails to close
Excessive wear on valve seat
Valve is damaged Replace entire valve assembly.