7
400 Series
To inspect
Operation 7-2
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
Standard oil clearance
Service limit
403C-11
0,039 - 0,106 mm (0.00150 - 0.00420 in)
0,20 mm (0.0078 in)
403C-15 404C-22 404C-22T
0,044 - 0,116 mm (0.00173 - 0.00456 in)
0,20 mm (0.0078 in)
4 If the oil clearance exceeds the service limit, renew the bush, or regrind the crankshaft journal and use an undersize bush. Bush size 403C-11 403C-15 404C-22 404C-22T
Crankshaft journal O.D finished size
Standard
47,964 - 47,975 mm (1.88830 - 1.88880 in)
0,25 mm (0.01 in)
47,714 - 47,725 mm (1.87850 - 1.87890 in)
0,50 mm (0.02 in)
47,464 - 47,475 mm (1.86870 - 1.86910 in)
Standard
67,957 - 67,970 mm (2.67550 - 2.67597 in)
0,25 mm (0.01 in)
67,707 - 67,720 mm (2.66563 - 2.66614 in)
0,50 mm (0.02 in)
67,457 - 67,470 mm (2.65579 - 2.65630 in)
H1083
66
Workshop Manual, TPD 1458E, issue 3 - Perkins Confidential: Green
