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ENGINE MAIN PARTS - INSPECTION AND CORRECTION
2 - 29
3.6 Measuring the connecting rod end play
Install the connecting rod and the rod cap onto
the mating crank pin. Tighten the cap nuts to the
specified torque. Using a thickness gauge,
measure the gap (end play).
If the measured value exceeds the limit, replace
the connecting rod and the rod cap.
Unit: mm (in.)
Standard value
Limit
Connecting rod end
play
0.10 to 0.35
(0.004 to 0.014)
0.50
(0.012)
3.7
Inspecting the oil clearance for
connecting rod bearings
(1)
Install the connecting rod bearings (upper and
lower) into the connecting rod large end. Tighten
the cap nuts to the specified torque. Measure the
inner diameter of the bearings.
(2)
Measure the diameter of the mating crank pin.
The difference between the bearing inner
diameter and the crank pin diameter is the oil
clearance for the bearings.
Unit: mm (in.)
Nominal
value
Standard
value
Limit
Crank pin
diameter
φ
48
(1.8912)
47.950 to 47.964
(1.8892 to 1.8897)
―
Oil clearance
for connecting
rod bearings
―
0.025 to 0.072
(0.0010 to 0.0028)
0.150
(0.0059)
(3)
If the measured oil clearance exceeds the limit,
replace the bearings. With the new bearings
installed, measure the oil clearance again.
(4)
If the measured oil clearance still exceeds the
limit, use the undersize bearings [0.25 mm
(0.0098 in.), 0.50 mm (0.0197 in.), 0.75 mm
(0.0295 in.) U.S.]
Also, grind the crank pin accordingly to the
finished dimension shown below.
Crank pin ground dimensions
Unit: mm (in.)
Finished dimension
0.25 (0.0098)
φ
47.75
-0.035
-0.050
(1.881
-0.0014
-0.0020
)
0.50 (0.0197)
φ
47.50
-0.035
-0.050
(1.871
-0.0014
-0.0020
)
Crank pin
undersize
0.75 (0.0295)
φ
47.25
-0.035
-0.050
(1.861
-0.0014
-0.0020
)
Measuring the connecting rod end play
Measuring the connecting rod bearings
inner diameter
Measuring the crank pin diameter
Measuring
direction
Measuring
location
Thickness gauge
Tightening torque
32.4 to 37.3 N m
(3.3 to 3.8 kgf m)
[23.9 to 27.5 lbf ft]
Measuring
direction
Measuring
location
Tightening torque
32.4 to 37.3 N m
(3.3 to 3.8 kgf m)
[23.9 to 27.5 lbf ft]
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 ...