Perkins 403C-11 Workshop Manual page 76

7
To inspect
1 Check the bush for damage, wear and contact. If damaged, worn or poor contact renew the bush.
2 Using a cylinder gauge and a micrometer, measure the bush (A) and the crankshaft journal (B) to calculate
the clearance.
3 Measure the inside diameters at positions (A1) and (A2) at each position measure in both directions (A3)
and (A4) as shown. The oil clearance is the difference between the larger value and the maximum crankshaft
journal diameter.
Engine
403C-11 0,039 - 0,106 mm (0.00150 - 0.00420 in)
403C-15
404C-22 0,044 - 0,116 mm (0.00173 - 0.00456 in)
404C-22T
4 If the oil clearance exceeds the service limit, renew the bush, or regrind the crankshaft journal and use an
undersize bush.
Bush size
Standard
403C-11 0,25 mm (0.01 in)
0,50 mm (0.02 in)
Standard
403C-15
404C-22 0,25 mm (0.01 in)
404C-22T
0,50 mm (0.02 in)
66
Standard oil clearance
Crankshaft journal O.D finished size
47,964 - 47,975 mm (1.88830 - 1.88880 in)
47,714 - 47,725 mm (1.87850 - 1.87890 in)
47,464 - 47,475 mm (1.86870 - 1.86910 in)
67,957 - 67,970 mm (2.67550 - 2.67597 in)
67,707 - 67,720 mm (2.66563 - 2.66614 in)
67,457 - 67,470 mm (2.65579 - 2.65630 in)
Workshop Manual, TPD 1458E, issue 3 - Perkins Confidential: Green
Service limit
0,20 mm (0.0078 in)
0,20 mm (0.0078 in)
400 Series
Operation 7-2
H1083