Perkins UA Workshop Manual page 34

2
Crankshaft
Diameter of main journals . ... ... ... ... ... ... ... ... ... ... ... ... ... ...64,951/64,970 mm (2.5571/2.5578 in)
Maximum wear and ovality on journals and crank pins . ... ... ... ... ... ... ... ... ... ... .0,04 mm (0.0016 in)
Width of front journal ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... 32,80/34,20 mm (1.29/1.35 in)
Width of number four journal.. ... ... ... ... ... ... ... ... ... ... ... ... ...33,000/33,040 mm (1.2992/1.3008 in)
Width of all other journals . ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... .32,95/33,05 mm (1.297/1.301 in)
Diameter of crank pins . ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... .52,95/52,97 mm (2.085/2.085 in)
Width of crank pins . ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... .30,05/32,95 mm (1.183/1.297 in)
Diameter of crankshaft palm .. ... ... ... ... ... ... ... ... ... ... ... ... ...94,965/95,000 mm (3.7837/3.7401 in)
Depth of recess for spigot bearing ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... 11,6/12,6 mm (0.46/0.50 in)
Bore of recess for spigot bearing ... ... ... ... ... ... ... ... ... ... ... ...40,000/40,025 mm (1.5748/1.5757 in)
Crankshaft end-float ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ..0,040/0,275 mm (0.0015/0.0108 in)
Maximum permissible end-float . ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... 0,405 mm (0.0159 in)
Fillet radii of journals and crank pins ... ... ... ... ... ... ... ... ... ... ... ... ... ... ...3,3/3,7 mm (0.13/0.14 in)
Undersized journals and crank pins. ... ... ... - 0,25 mm (0.010 in)/- 0,50 mm (0.020 in)/ 0,70 mm (0.030 in)
Crankshaft heat treatment
UA and UB ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... Induction hardened journals
UC.. ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... . Induction hardened journals and fillet radii
Crankshaft run-out
With the crankshaft on vee blocks at the front and rear journals, the maximum run-out (total indicator reading)
at the journals must not be more than the figures in the table shown below.
Run-out must not be opposite. The difference in run-out between one journal and the next must not be more
than 0,10 mm (0.004 in).
Main bearings
Type ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... Steel back, aluminium / tin face
Width of bearing. ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... 25,70/26,00 mm (1.01/1.02 in)
Thickness at centre of bearing ... ... ... ... ... ... ... ... ... ... ... ... ... ..1,993/1,999 mm (0.0784/0.0787 in)
Available undersized bearings ... ... ... ... ... ..-0,25 mm (0.010 in)/-0,50 mm (0.020 in)/-0,75 mm (0.030 in)
Crankshaft thrust washers
Type ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... . Steel back, lead / bronze bearing material
Position ... ... ... ... ... ... ... ... ... ... ... ... .In cylinder block only, each side of number four main bearing
Thickness:
- Standard ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ..2,380/2,440 mm (0.0937/0.0961 in)
- Oversize. ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... 2,58/2,64 mm (0.102/0.104 in)
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This document has been printed from SPI². Not for Resale
Journal Crankshaft
1 Mounting
2 0,08 mm (0.003 in)
3 0,15 mm (0.006 in)
4 0,08 mm (0.003 in)
5 Mounting
Workshop Manual, TPD 1392E, issue 3
700 Series