Engine Maintenance Standards Table - Shibaura ST333 Workshop Manual

2-5 Engine Maintenance Standards Table

N843 ENGINE
Unit Part Inspection Items
Compression pressure of cylinder
Cylinder head tightening torque
Distortion of face of cylinder head
Width of valve seat
Bore
Distortion of upper face of cylinder
block
Skirt diameter (longer diameter)
Clearance to cylinder
Clearance between piston pin hole
and pin
Outer diameter of pin
Small end bush-to-pin clearance
Piston ring gap:
Piston ring
groove-to-ring
clearance
Ring width
* Unit for values without unit in the column of inspection item is mm.
Standard
Dimension
2
MPa {kgf/cm }
N･m {kgf・m}
184Y
Intake
Exhaust
∅84
∅83.955
No.1 ring
No.2 ring
Oil ring
No.1 ring
No.2 ring
Oil ring
No.1 ring 2
No.2 ring 1.5
Oil ring 4
64
To be
Standard Value
Repaired
Less than
More than 2.94 2.45
{More than 30} {Less than
25}
98－103
{10.0－10.5}
Less than 0.05 0.12
0.85 – 1.15 1.8
1.66－1.87 2.5
1.66－1.73 2.5
∅84 – 84.019
Less than 0.05 0.12
∅83.948－
83.963
0.038 – 0.072
-0.001 – +0.007
∅27.996 – 28.0
0.010 – 0.025
0.20 – 0.35
0.20 – 0.40
0.20 – 0.8
0.07 – 0.11
0.04 – 0.08
0.02 – 0.06
Allowable
Remarks
Limit
Engine
200 rpm
Coat threads
with engine
oil.
Valve sheet
angle 45°
∅84.2
∅83.7
0.25
At 20°C
0.02
∅27.98
Oil
0.08
clearance
1.0
1.2
0.25
0.15