FLAPPER, SHIEL 7X3854 - Caterpillar

Introduction
This procedure is intended to give information on inspecting the flywheel housing. Refer to the Specifications Manual for dimensions and specifications that are used in this procedure.Required Tools
Table 1
Required Tools
Part Number Part Description Qty
8T-5096 Dial Indicator Group 1 Inspection Procedure
Concentricity of the Flywheel Housing
Note: This check must be made with the flywheel and the starter removed and the bolts for the flywheel housing tightened lightly.
Illustration 1 g00913387
Install the dial indicator in Illustration 1, as shown.
Set the pointer of the dial indicator to 0 mm (0 inch).
Check the concentricity at intervals of 90 degrees around the flywheel housing.
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 2. Note: Any necessary adjustment must be made on the flywheel housing. Then, recheck the concentricity.Alignment of the Flywheel Housing
Note: This check must be made with the flywheel and the starter removed and the bolts for the flywheel housing tightened to the correct torque.
Illustration 2 g00913389
Install the dial indicator in Illustration 2, as shown.
Set the pointer of the dial indicator to 0 mm (0 inch).
Check the alignment at intervals of 90 degrees around the flywheel housing.
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 2. Note: Any necessary adjustment must be made on the flywheel housing.
Table 2
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)