Connecting rod check
Characteristic
Maximum wear limit of the rod small end
17.05 mm (0.671 in)
Maximum rod small end radial clearance
0.055 mm (0.0022 in)
Maximum axial clearance between the con-
necting rod and the crank pin
0.55 mm (0.022 in)
Maximum connection rod pin clearance
0.08 mm (0.0031 in)
Inspecting pistons
WITHOUT CLASS SELECTION
Characteristic
Minimum piston diameter
77.914 mm (3.067 in)
Maximum clearance between the cylinder and piston
0.1 mm (0.0039 in)
Maximum wear limit of the pin hole on the piston
0.055 mm (0.0022 in)
Maximum permitted clearance between piston ring 1 (starting from the bottom) and the corre-
sponding slot on the piston
0.1 mm (0.0039 in)
Maximum permitted clearance between piston ring 2 (starting from the bottom) and the corre-
sponding slot on the piston
0.1 mm (0.0039 in)
Maximum opening of the piston ring fit on the piston
0.3 mm (0.0118 in)
Minimum wear limit of the thickness of piston ring 1 (starting from the bottom)
0.077 mm (0.0030 in)
Minimum wear limit of the thickness of piston ring 2 (starting from the bottom)
0.070 mm (0.0027 in)
TUONO V4 R Engine
ENG - 325
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