ENGINE MAIN PARTS - INSPECTION AND CORRECTION
2 - 32
3.12 Measuring the cylinder bore
Using a cylinder gauge, measure the cylinder
bore and cylindricality. If any of the cylinders
exceeds the limit, bore all cylinders of the same
engine and replace the pistons and the piston
rings with oversize parts.
Measure at 3 locations as shown in the fig., each
in directions A and B.
Unit: mm (in.)
Pistons and piston
rings available
Cylinder bore
Size Code
Standard
value
Limit
STD STD
φ
78
+0.03
0
(3.07
+0.012
0
)
0.25 OS
25
φ
78.25
+0.03
0
(3.08
+0.012
0
)
0.50 OS
50
φ
78.50
+0.03
0
(3.09
+0.012
0
)
Standard
value
+0.2
(0.0080)
Cylinder bore out of
cylindricality
±
0.01
(0.0004)
max
―
3.13 Measuring the cylinder block top face for
distortion
Using a straight edge across the top face of the
cylinder block and a thickness gauge, measure
for any distortion.
If the measured distortion exceeds the limit,
correct by grinding the top face.
Unit: mm (in.)
Standard
value
Limit
Cylinder block top face
distortion
0.05 (0.002)
max
0.10 (0.004)
The combined grinding limit for the cylinder
block top face and the mating cylinder head
bottom face is 0.2 mm (0.008 in.).
Measuring the cylinder bore
Measuring the cylinder block top face for
distortion
A
B
Measuring
location
Measuring
direction
Measuring location,
Measuring direction
Summary of Contents for diesel engines
Page 5: ......
Page 33: ...SERVICE STANDARDS 1 20 ...
Page 34: ...1 General Tools 1 22 2 Special Tools 1 23 TOOLS LIST ...
Page 37: ...TOOLS LIST 1 24 ...
Page 41: ...OVERHAUL TIMING 1 28 ...
Page 46: ......
Page 47: ......
Page 61: ...ENGINE MAIN PARTS DISASSEMBLY 2 16 ...
Page 99: ...FUEL SYSTEM REMOVAL 3 8 ...
Page 115: ...FUEL SYSTEM DISASSEMBLY INSPECTION AND REASSEMBLY 3 24 ...
Page 119: ...FUEL SYSTEM INSTALLATION 3 28 2 Governor Installing the governor Installation sequence ...
Page 123: ...FUEL SYSTEM INSTALLATION 3 32 ...
Page 131: ...OIL SYSTEM DISASSEMBLY INSPECTION AND REASSEMBLY 4 8 ...
Page 143: ...COOLING SYSTEM DISASSEMBLY INSPECTION AND REASSEMBLY 5 8 ...
Page 150: ......
Page 151: ......
Page 153: ...INLET AND EXHAUST SYSTEMS REMOVAL 6 4 ...
Page 159: ...INLET AND EXHAUST SYSTEMS INSTALLATION 6 10 ...
Page 160: ...1 Starter 7 2 2 Alternator 7 3 3 Stop Solenoid 7 4 4 Glow Plug 7 5 ELECTRICAL SYSTEM REMOVAL ...
Page 165: ...ELECTRICAL SYSTEM REMOVAL 7 6 ...
Page 189: ...ELECTRICAL SYSTEM INSTALLATION 7 30 ...
Page 207: ...MISCELLANEOUS 9 4 ...