Piston

HOW TO SELECT PISTON AND BEARING


Piston


WHEN NEW CYLINDER BLOCK IS USED





Check the cylinder bore grade ("1", "2" or "3") on rear side of cylinder block, and select piston of the same grade.

A : Bearing housing grade No. 1
B : Bearing housing grade No. 2
C : Bearing housing grade No. 3
D : Bearing housing grade No. 4
E : Bearing housing grade No. 5
F : Cylinder bore grade No. 1
G : Cylinder bore grade No. 2
H : Cylinder bore grade No. 3
I : Cylinder bore grade No. 4
J : Cylinder bore grade No. 5
K : Cylinder bore grade No. 6
L : Cylinder bore grade No. 7
M : Cylinder bore grade No. 8

Arrow :Engine front


NOTE:
Piston is available with piston pin as a set for the service part.

WHEN CYLINDER BLOCK IS REUSED
1. Measure the cylinder bore inner diameter. Cylinder Block.





2. Determine the bore grade by comparing the measurement with the values under the cylinder bore inner diameter of the "PISTON SELECTION TABLE".

A : Bank 2
B : Bank 1
C : Front mark
D : Piston grade number
E : Piston pin grade number
F : Identification code

3. Select piston of the same grade.

PISTON SELECTION TABLE





NOTE:
Piston is available together with piston pin as assembly.