Perkins Phaser Series - Page 122

15 TIMING CASE AND DRIVE ASSEMBLY
Crankshaft gear
Number of teeth . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Diameter of bore . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47,625/47,650 mm (1.8750/1.8760 in)
Diameter of hub for gear on crankshaft . . . . . . . . . . . . . . . . . . . 47,625/47,645 mm (1.8750/1.8758 in)
Transition fit of gear on crankshaft . . . . . . . . . . . . . . . . . . . . -0,020/+0,048 mm (-0.0008/+0.0010 in)
Idler gear and hub
Number of teeth . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
Diameter of bore of gear . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57,14/57,18 mm (2.2495/2.2512 in)
- with needle roller bearings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69,01/69,03 mm (2.717/2.718 in)
Width of gear and split bush assembly (fitted in position) . . . . . . . . . . 30,14/30,16 mm (1.186/1.187 in)
Inside diameter of flanged bushes (fitted in position) . . . . . . . . . . . . 50,78/50,80 mm (1.9999/2.000 in)
Outside diameter of hub . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50,70/50,74 mm (1.9960/1.9975 in)
-with needle roller bearing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54,987/55,000 mm (2.1648/2.1654 in)
Clearance of bushes on hub . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0,04/0,10 mm (0.0016/0.0039 in)
End float of gear:
- Production limits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0,10/0,20 mm (0.004/0.008 in)
- with needle roller bearings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0,24/0,33 mm (0.009/0.013 in)
- Service limit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0,38 mm (0.015 in)
Backlash for all gears . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0,08 mm (0.003 in) minimum
Idler gear and hub for the Bendix compressor
Number of teeth . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Diameter of bore of gear . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55,010/55,025 mm ( 2.1657/2.1663 in)
Outside diameter of hub . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50,000/49,990 mm (1.9960/1.9975 in)
End float of gear with needle roller bearing fitted: . . . . . . . . . . . . . . . . . 0,12/0,16 mm (0.005/0.006 in)
Backlash gear . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.07 mm (0.003 in) minimum
15A.22 Perkins Phaser/1000 Series, April 1995