GoKa Sports LJ276M, Руководство по обслуживанию

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13
Main points for installing piston assembly:
A. Piston and connecting rod assembly matching group
①
Requirement of matching group of the piston skirt diameter is in the table below:
Piston skirt diameter matching group
Group and mark Skirt dimension
（
Ф 76
0
-0.03
）
1 ≥
－
0.030 ≤
－
0.020
2 ＞－ 0.020 ≤ － 0.010
3 ＞－ 0.010 ≤ 0
②
Requirement of piston matching relation is in the table below:
Piston matching relation
Matching group
Engine block 1 2 3
piston 1 2 3
③
Requirement of piston pin boss hole matching group is in the table below:
Piston pin boss hole matching group
Group and mark hole dimension （ Ф 18 +0.008
–0.001 ）
A ≥ -0.001 ≤ +0.002
B ＞ +0.002 ≤ +0.005
C ＞ +0.005 ≤ +0.008
④ Requirement of piston pin external diameter matching group is in the table below:
Piston pin external diameter matching group
group mark （ colored at
internal hole ）
Piston pin external diameter （ Ф 18
0
-0.009
）
A Red ≥
－
0.009 ≤
－
0.006
B Yellow
＞－
0.006 ≤
－
0.003
C Blue ＞－ 0.003 ≤ 0
⑤
Requirement of connecting rod small end matching group is in the table below:
Connecting rod small end matching group
Group and mark
Connecting rod small end diameter （ Ф 18 0.020
0.047 ）
A
≥
－
0.047 ≤
－
0.038
B
＞－ 0.038 ≤ － 0.029
C
＞－ 0.029 ≤ － 0.020