TOHATSU TLDI MD 115A SERIES, Руководство по обслуживанию

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2-12
Service Data
TLDI 115A 2007
Description Item
Build up of carbon in combustion chamber
Corrosion
Cooling water passage clogged
Deposits in water jacket
Engine anode
Carbon build up on piston crown and in ring
grooves
Measure piston pin hole diameter
Piston Pin Outer diameter
Deflection
<Measure with both ends supported.>
Oil seal scratches
Loose rod
Small end inner diameter
Small end area side gap
Reed Valve Stopper Lift height
Standard Values
Cylinder Head
Distortion or damage on mating surface
Cylinder
Mating surface scratches and wear
Seizure, cylinder liner damage, or wear
φ
23.02 mm (
φ
0.9063 in)
φ
88.02 mm <0.5 mm oversaize :
φ
88.52 mm>
φ
3.4654 in <0.0197 in oversize :
φ
3.4850 in>
Piston
φ
87.86 mm <0.5 mm oversize :
φ
88.36 mm>
φ
3.4590 in <0.0197 in oversize :
φ
3.4787 in>
*Value with piston coating
Scratch on the sliding surface
0.15 - 0.21 mm (0.0059 - 0.0083 in)
*Value with piston coating
Diameter
<Measure the external diameter at a point 11.5mm
(0.45 in) above the lower edge of the piston skirt.>
Piston clearance
<The gap between cylinder and piston.>
Measure clearance between piston ring and ring
groove.
φ
23.00 mm (0.9060 in)
Top: 0.04 - 0.08 mm (0.0016 - 0.0032 in)
Second: 0.04 - 0.08 mm (0.0016 - 0.0032 in)
Third: 0.04 - 0.08 mm (0.0016 - 0.0032 in)
Clearance between piston pin and pin hole 0.015 - 0.025 mm (0.00059 - 0.00098 in)
Crank Shaft
0.05 mm (0.0020 in) or less
Bearing external diameter
Upper area of #1:
φ
40.0 mm (1.574 in)
Lower area of #4:
φ
40.0 mm (1.574 in)
Piston Rings
Connecting Rod
φ
28.00 mm (1.102 in)
0.20 - 0.55 mm (0.0079 - 0.0217 in)
Ring end gap
Note: Measurement of ring end gap ; If ring gauge
is not available, use cylinder bore top or bottom
with small wear.
Top: 0.25 - 0.40 mm (0.00098 - 0.0157 in)
Second: 0.25 - 0.40 mm (0.00098 - 0.0157 in)
Third: 0.25 - 0.40 mm (0.00098 - 0.0157 in)
9.2 - 9.4 mm (0.362 - 0.370 in)
Reed Valve Fails to close, is worn or damaged
Engine Block
Compression
Note: Remove all four spark plugs and measure
after warming with the throttle fully open.
0.9 Mpa (128 psi) [9.0 kg/
㎠
]
0.03 mm (0.0012in) or less for scratches
0.03 mm (0.0012in) or less for distortion
0.03 mm (0.0012in) or less for scratches
0.03 mm (0.0012in) or less for distortion
6. Maintenance Data
Engine
Parts
MD115A̲ch02̲E̲2校̲070529.qxd 07.6.6 5:40 PM ページ 12