LEVER AS 9R4628 - Caterpillar

Gear Group
3044, 3046
Illustration 16 g06337266
(6) Camshaft gear
(7) Fuel injection pump gear
(8) Crankshaft gear
(9) Oil pump gear
(10) Idler gearTighten the nut for the fuel injection pump drive gear to the following torque 83 to 98 N m (61.2 to 72.3 lb ft).Tighten the nut for the idler gear to the following torque 29 to 39 N m (21.4 to 28.8 lb ft).3064, 3066
Illustration 17 g06337269
(11) Fuel injection pump gear
(12) Idler gear
(13) Camshaft gear
(14) Crankshaft gear
(15) Nut for fuel injection pump drive gearTighten the nut for the fuel injection pump drive gear to the following torque 83 to 98 N m (61.2 to 72.3 lb ft).Tighten the nut for the idler gear to the following torque 29 to 39 N m (21.4 to 28.8 lb ft).Timing Gears
Illustration 18 g06337276
(16) Timing marks for the fuel injection pump gear
(17) Timing marks for the idler gear
(18) Timing marks for the camshaft gear
(19) Timing marks for the crankshaft gear
Illustration 19 g06337278
Fuel Injection Pump Timing Mark
(20) Timing marks
(21) Timing marksEnd Play and Backlash
Table 13
Specification of End Play and Backlash
Description Standard at Assembly Service Limit
End play of camshaft 0.10 to 0.25 mm (0.004 to 0.010 inch) 0.300 mm (0.0118 inch)
End play of idler gear 0.05 to 0.20 mm (0.002 to 0.008 inch) 0.35 mm (0.014 inch)
Timing gear Backlash 0.03 to 0.18 mm (0.001 to 0.007 inch) 0.350 mm (0.0138 inch)
Crankshaft end play 0.100 to 0.264 mm (0.0039 to 0.0104 inch) 0.300 mm (0.0118 inch)
Backlash of oil pump gear and idler gear 0.10 to 0.19 mm (0.004 to 0.007 inch) 0.35 mm (0.014 inch)
Illustration 20 g06337281
(22) Dial IndicatorMeasure the end play with dial indicator (22). Refer to Table 13 for the specification of the end play of the gear, that was measured.
Illustration 21 g06337284
The illustration shows the correct position of the dial indicator to measure timing gear backlash. Keep the tip of the dial indicator at 90 degrees to the centerline of the tooth or as close as possible.
Reference Table 13 for the minimum of relative movement for the backlash that is available. Check for the backlash of the gear in three or four locations on the gear. The small difference in the gear teeth and the runout of the gear tooth make checking at different locations necessary. To check the backlash of the gear, hold one gear steady and use the dial indicator to measure the relative movement of the one gear to the other gear. The dial position is important for a correct accurate reading.Storage
Illustration 22 g06278538
Example of protection for a component that is stored for a shorter term
Illustration 23 g06278539
Example of protection for a component that is stored for a longer term
Proper protection of the part from corrosion is important. Corrosion will start in as little as one hour after the part has been cleaned.When the part will not be inspected for one hour or less the part should be coated with a rust or corrosion inhibitor or coated with clean engine oil. The part should be individually wrapped to prevent contamination,