Perkins New 1000 Series, Workshop Manual, Page: 107 / 290

Workshop Manual, TPD 1350, issue 3 107
14
New 1000 Series
Bearing clearance
Four cylinder engines:
All bearings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0,057/0,117 mm (0.0022/0.0046 in)
Six cylinder engines:
All other bearings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0,047/0,117 mm (0.0018/0.0046 in)
Available undersize bearings. . . . . . . . . . . -0,25 mm (-0.010 in); -0,51 mm (-0.020 in); -0,76 mm (-0.030 in).
Crankshaft thrust washers
Type. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Steel back, lead bronze bearing material
Position . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Each side of centre main bearing
Thickness:
- Standard . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2,26/2,31 mm (0.089/0.091 in)
- Oversize . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2,45/2,50 mm (0.096/0.098 in)
Balancer unit
Diameter of drive shaft for front bearing . . . . . . . . . . . . . . . . . . . . . . . . 28,562/28,575 mm (1.1245/1.1250 in)
Diameter of drive shaft for rear bearing. . . . . . . . . . . . . . . . . . . . . . . . . 23,787/23,800 mm (0.9365/0.9370 in)
Number of teeth on gear of drive shaft . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Backlash from gear of drive shaft to idler gear . . . . . . . . . . . . . . . . . . . . . . . . . 0,17/0,29 mm (0.007/0.011 in)
End-float of drive shaft. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0,13/0,30 mm (0.005/0.012 in)
Diameter of bore for front bearing of drive shaft . . . . . . . . . . . . . . . . . . 34,912/34,937 mm (1.3745/1.3755 in)
Diameter of bore for rear bearing of drive shaft. . . . . . . . . . . . . . . . . . . 29,972/29,993 mm (1.1800/1.1808 in)
Diameter of bore for idler gear. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47,64/47,65 mm (1.8755/1.8760 in)
Diameter of hub of idler gear . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38,09/38,10 mm (1.4996/1.5000 in)
End-float of idler gear . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0,07/0,23 mm (0.003/0.009 in)
Thickness of thrust washer for idler gear. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4,14/4,29 mm (0.163/0.169 in)
Number of teeth on idler gear . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Inside diameter of bushes in balancer frame and end cover (fitted) . . . . . . . . . . . . . . . . . . 38,133/38,174 mm
(1.5013/1.5029 in)
Diameter of spigots for balance weights . . . . . . . . . . . . . . . . . . . . . . . . 38,054/38,069 mm (1.4982/1.4988 in)
Fit of spigot in bush . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0,064/0,120 mm (0.0025/0.0047 in)
End-float of balance weights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0,19/0,40 mm (0.007/0.016 in)
Backlash of gears on balance weights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0,10/0,27 mm (0.004/0.011 in)
Backlash of drive gear to spline on balance weight. . . . . . . . . . . . . . . . . . . . . . 0,05/0,20 mm (0.002/0.008 in)
Number of teeth on drive gear. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Number of teeth on spline on balance weight . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
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