SENR9977 55 Testing and Adjusting Section i02270822 Gear Group - Inspect g01137592 Illustration 64 g00913389 Illustration 63 (1) Fuel pump drive gear (2) Idler gear (3) Camshaft drive gear 1. Install the 21825617 dial gauge. See Illustration 63. Remove the front timing cover and inspect the gears. The timing marks on the gears indicate the front side of the gears. Inspect the gears for broken teeth or worn teeth. 2. Set the pointer of the 21825617 dial gauge to 0 mm (0 inch). 3. Check the alignment at intervals of 90 degrees around the flywheel housing. 4. Calculate the difference between the lowest measurement and the highest measurement.
This difference must not be greater than the limit that is given in Table 7. Note: Any necessary adjustment must be made on the flywheel housing. Table 7 Limits for Flywheel Housing Runout and Alignment (Total Indicator Reading) Bore of the Housing Flange Maximum Limit (Total Indicator Reading) 362 mm (14.25 inch) 0.23 mm (0.009 inch) 410 mm (16.14 inch) 0.25 mm (0.010 inch) 448 mm (17.63 inch) 0.28 mm (0.011 inch) 511 mm (20.11 inch) 0.30 mm (0.012 inch) 584 mm (22.99 inch) 0.36 mm (0.014 inch) 648 mm (25.51 inch) 0.41 mm (0.016 inch) 787 mm (30.98 inch) 0.48 mm (0.019 inch)