Piston Ring And Block - Perkins 100 Series Workshop Manual

4

Piston ring and block

To inspect
Note: If the piston ring is worn or damaged, renew it.
Piston ring gap
Insert the rings into the cylinder at right angles to the cylinder bore and measure the gaps with a feeler gauge.
If the gap is more than the service limit, renew the ring.
102-05, 103-07
Gap mm (in)
Piston ring Standard
0,13 - 0,25
No. 01 ring
(0.0051 - 0.0100)
0,10 - 0,22
No. 02 ring
(0.0040 - 0.0087)
0,10 - 0,30
Oil control ring
(0.0040 - 0.0120)
103-13, 103-15, 104-19, 104-22
Gap mm (in)
Piston ring Standard
0,20 - 0,35
No. 01 ring
(0.0079 - 0.0138)
0,20 - 0,40
No. 02 ring
(0.0079 - 0.0158)
0,20 - 0,40
Oil control ring
(0.0079 - 0.0158)
54
This document has been printed from SPI². Not for Resale
Service limit Piston ring
1,0
No. 01 ring
(0.040)
1,0
No. 02 ring
(0.040)
1,0
Oil control ring
(0.040)
Service limit
1,0
(0.040)
1,0
(0.040)
1,0
(0.040)
Operation 4-6
103-10
Gap mm (in)
Standard
0,15 - 0,27
(0.0059 - 0.0106)
0,12 - 0,24
(0.0047 - 0.0094)
0,20 - 0,35
(0.0079 - 0.0138)
Workshop Manual, TPD 1377E, issue 4
100 Series
Service limit
1,0
(0.040)
1,0
(0.040)
1,0
(0.040)