Engine Mechanical: For J20 Engine 1D-113
Piston pin
• Check piston pin, connecting rod small end bore and
piston bore for wear or damage, paying particular
attention to condition of small end bore bush. If pin,
connecting rod small end bore or piston bore is badly
worn or damaged, replace pin, connecting rod or
piston.
• Piston pin clearance: Check piston pin clearance in
small end.
Replace connecting rod if its small end is badly worn
or damaged or if measured clearance exceeds limit.
Piston pin clearance in small end
Standard: 0.003 – 0.014 mm (0.0001 – 0.0005 in.)
Piston pin clearance in piston
Standard: 0.006 – 0.017 mm (0.00024 – 0.00067 in.)
Small-end bore
21.003 – 21.011 mm (0.8269 – 0.8272 in.)
Piston pin diameter [B]
20.997 – 21.000 mm (0.8267 – 0.8268 in.)
Piston bore [A]
21.006 – 21.014 mm (0.8270 – 0.8273 in.)
Piston rings
To measure end gap, insert piston ring (2) into cylinder
bore and then measure the gap by using thickness
gauge (1).
If measured gap is out of specification, replace ring.
NOTE
Clean carbon and any other dirt from top of
cylinder bore before inserting piston ring.
Piston ring end gap
Piston rings end gap
“a”: 120 mm (4.72 in.)
I2RH01140159-01
I5JB0A142054-02
Item
Standard
Limit
Top
ring
0.20 – 0.33 mm
(0.0079 – 0.0129 in.)
0.7 mm (0.0276 in.)
2nd
ring
0.33 – 0.48 mm
(0.0129 – 0.0188 in.)
0.7 mm (0.0276 in.)
Oil ring
0.20 – 0.50 mm
(0.0079 – 0.0196 in.)
1.8 mm (0.0709 in.)
I2RH01140161-01
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