Perkins 103-13 - Piston and Piston Ring Dimensions

2
Workshop Manual, TPD 1377E, issue 4 17
100 Series
Piston and piston ring dimensions
Piston
If the outer surface of the piston is excessively damaged (cracked, scored, or it shows signs of being burnt etc.)
it must be renewed.
Piston skirt
1 Check the larger diameter of the piston skirt (10 mm from bottom) with reference to the following tables.
102-05, 103-07, 103-10, 103-13
103-15, 104-19, 104-22
2 Check inside diameter (thrust direction) of the cylinder.
3 Calculate the clearance between the cylinder and piston. If this clearance is more than standard, or the
piston diameter is less than the service limit, renew the piston.
Oversized piston
When the cylinder is oversized, ensure that the correct oversized piston and piston ring set is used.
Note: Ring sets are available for all pistons listed above.
Piston
size
Diameter mm (in)
102-05, 103-07 103-10 103-13
Standard
66,9375 - 66,9525
(2.6353- 2.6359)
74,9325 - 74,9475
(2.950100 - 2.950690)
83,948 - 83,963
(3.30503 - 3.30562)
0,5 mm
oversize
67,4375 - 67,4525
(2.6550 - 2.6556)
75,4325 - 75,4475
(2.969780 - 2.970370)
84,448 - 84,463
(3.32472 - 3.32531)
1,0 mm
oversize
Not applicable
75,9325 - 75,9475
(2.989463 - 2.990060)
84,948 - 84,963
(3.34440 - 3.34499)
Piston
size
Diameter mm (in)
103-15, 104-19 104-22
Standard
83,948 - 83,963
(3.30503 - 3.30567)
83,948 - 83,963
(3.30503 - 3.30562)
0,5 mm
oversize
84,448 - 84,463
(3.32472 - 3.32531)
84,448 - 84,463
(3.32472 - 3.32531)
1,0 mm
oversize
84,948 - 84,963
(3.34440 - 3.34499)
84,948 - 84,963
(3.34440 - 3.34499)
Engine model
Diameter mm (in)
Standard Service limit
102-05, 103-07 66,9375 - 66,9525 (2.6353 - 2.6359) 66,7 (2.626)
103-10 74,9325 - 74,9475 (2.950100 - 2.950690) 74,7 (2.941)
103-13, 103-15, 104-19, 104-22 83,948 - 83,963 (3.30503 - 3.30562) 83,7 (3.295)
Engine model
Clearance mm (in)
Standard Service limit
102-05, 103-07 0,048 - 0,082 (0.00189 - 0.00323) 0,25 (0.010)
103-10 0,0525 - 0,0865 (0.002070 - 0.003406) 0,25 (0.010)
103-13, 103-15, 104-19, 104-22 0,038 - 0,072 (0.00150 - 0.00283) 0,25 (0.010)
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