MECHANICAL
01-10–35
01-10
PISTON AND CONNECTING ROD INSPECTION
id011000503100
1. Check the oscillation torque as shown in the
figure. Verify that the large end drops under its
own weight with no resistance.
•
If the piston shakes heavily or unsmoothly,
disassemble the piston and connecting rod,
then inspect the following: (See 01-10-34
PISTON PIN INSPECTION.)
—
Clearance between piston pin outer
diameter and piston pin hole diameter.
—
Clearance between piston pin outer
diameter and connecting rod small end
inner diameter.
End Of Sie
CONNECTING ROD INSPECTION
id011000502800
1. Inspect the connecting rod for bending and
distortion using the connecting rod aligner.
•
If it exceeds the maximum specification,
replace the connecting rod.
Maximum connecting rod bending
0.050 mm {0.0020 in}
Maximum connecting rod distortion
0.050 mm {0.0020 in}
Connecting rod center-to-center distance
154.8 mm {6.094 in}
End Of Sie
CONNECTING ROD CLEARANCE INSPECTION
id011000507600
1. Measure the side clearance at the large end of
the connecting rod using a feeler gauge.
•
If it exceeds the maximum specification,
replace the connecting rod or crankshaft.
Standard side clearance at the large end of
connecting rod
0.14—0.36 mm {0.006—0.014 in}
Maximum side clearance at the large end of
connecting rod
0.465 mm {0.0183 in}
2. Measure the oil clearance at the large end of the
connecting rod using the following procedure:
(1) Cut the plastigauge as wide as the connecting
rod bearing width, place it parallel to the
crankshaft, avoiding the oil hole.
(2) Install the lower connecting rod bearing and
connecting rod cap. (See 01-10-40
CYLINDER BLOCK ASSEMBLY (I).)
(3) Remove the connecting rod cap. (See 01-10-
22 CYLINDER BLOCK DISASSEMBLY (II).)
(4) Measure the oil clearance at the large end of
the connecting rod.
•
If it exceeds the maximum specification,
replace the bearing or grind the crank pin
and use oversize bearings so that the
specified clearance is obtained.
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bpe2ue00000036
bp31je00000148
PLASTIGAUGE
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1A36-1U-12L.book 35 ページ ２０１２年１２月１０日 月曜日 午前９時２５分
