Perkins 103-13 - Crankshaft Bearing Bush

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24 Workshop Manual, TPD 1377E, issue 4
100 Series
Crankshaft bearing bush
1 Check the bearing (bush) for damage or poor contact. If found to be defective, renew.
2 Using a cylinder gauge and micrometer, measure the clearance between the bearing (bush) and the
crankshaft journal (B).
3 Measure inside diameters at positions (A1) and (A2). At each position measure in both directions (A3) and
(A4) as shown. The oil clearance can be obtained by subtracting this value from the maximum crankshaft
journal diameter.
4 If the oil clearance exceeds the service limit renew the bearing (bush), or grind the crankshaft journal to the
required specifications. In this case use an undersize bearing (bush).
5 To renew the crankshaft journal (bush), use a press to install.
Engine model
Clearance mm (in)
Standard Service limit
102-05, 103-07 0,035 - 0,102 (0.00140 - 0.00401) 0,20 (0.0078)
103-10 0,039 - 0,106 (0.00154 - 0.00420) 0,20 (0.0078)
103-13, 103-15, 104-19, 104-22 0,044 - 0,116 (0.00173 - 0.00456) 0,20 (0.0078)
Engine model/Bush size
Crankshaft journal
O.D. finished size mm (in)
102-05, 103-07
Standard 42,964 - 42,975 (1.69150 - 1.69193)
Undersize 0,25 mm (0.01 in) 42,714 - 45,725 (1.68165 - 1.68210)
Undersize 0,50 mm (0.02 in) 42,464 - 42,475 (1.67181 - 1.67224)
103-10
Standard 45,964 - 45,975 (1.80960 - 1.81004)
Undersize 0,25 mm (0.01 in) 45,714 - 45,725 (1.79980 - 1.80020)
Undersize 0,50 mm (0.02 in) 45,464 - 45,475 (1.78992 - 1.79035)
103-13
Standard 57,957 - 57,970 (2.28177 - 2.28228)
Undersize 0,25 mm (0.01 in) 57,707 - 57,720 (2.27192 - 2.27244)
Undersize 0,50 mm (0.02 in) 57,457 - 57,470 (2.26210 - 2.26260)
103-15, 104-19, 104-22
Standard 67,957 - 67,970 (2.67550 - 2.67597)
Undersize 0,25 mm (0.01 in) 67,707 - 67,720 (2.66563 - 2.66614)
Undersize 0,50 mm (0.02 in) 67,457 - 67,470 (2.65579 - 2.65630)
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