5
50 Workshop Manual, TPD 1458E, issue 3 - Perkins Confidential: Green
400 Series
Bearing holder
Centre bearing
1 Remove the bearing holder and inspect for peeling, melting, stepped wear and damage. if it is damaged
renew.
2 Use Plastigauge ® to measure the oil clearance (see Operation 4-10) between the crankshaft centre
journal and the bearing. If the oil clearance is greater than the service limit, renew the bearings or regrind
the centre journal and use undersize bearings.
Engine Standard oil clearance Service limit
403C-11 0,039 - 0,106 mm (0.00153 - 0.00401 in) 0,20 mm (0.0078 in)
403C-15
404C-22
404C-22T
0,044 - 0,102 mm (0.00150 - 0.00420 in) 0,20 mm (0.0078 in)
Engine / Bearing size mm (in) Journal Centre crankshaft diameter mm (in)
403C-11
Standard
1, 2 47,965 - 47,975 (1.88830 - 1.88880)
3 47,954 - 47,965 (1.88800 - 1.88840)
Undersize 0,25 (0.01)
1, 2 47,714 - 47,725 (1.87850 - 1.87890)
3 47,704 - 47,715 (1.87810 - 1.87850)
Undersize 0,50 (0.02)
1, 2 47,464 - 47,475 (1.86870 - 1.86910)
3 47,454 - 47,465 (1.86250 - 1.86870)
403C-15
Standard 1, 2, 3 67,957 - 67,970 (2.67550 - 2.67597)
Undersize 0,25 (0.01) 1, 2, 3 67,707 - 67,720 (2.66563 - 2.66614)
Undersize 0,50 (0.02) 1, 2, 3 67,457 - 67,470 (2.65579 - 2.65630)
404C-22 and 404C-22T
Standard 1, 2, 3, 4 67,957 - 67,970 (2.67550 - 2.67597)
Undersize 0,25 (0.01) 1, 2, 3, 4 67,707 - 67,720 (2.66563 - 2.66614)
Undersize 0,50 (0.02) 1, 2, 3, 4 67,457 - 67,470 (2.65579 - 2.65630)
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