STRIP 1832937 - Caterpillar

Illustration 1 g00553994
(1) Cylinder block Measure the amount of the warpage of the cylinder block with a straightedge and feeler gauge. Maximum allowable clearance ... 0.050 mm (0.0020 inch) Repair limit ... 0.200 mm (0.0079 inch)Resurface the top of the block if the repair limit is reached.
Illustration 2 g00529446
(2) Cylinder boreMeasure the inside diameter of the cylinder liner that is parallel to the crankshaft. Measure the inside diameter of the cylinder liner that is in a perpendicular position to the crankshaft. Measure the top, the middle and the bottom of the cylinder liner. Refer to Table 1 for tolerances of the cylinder bores.
Table 1
Tolerances of Cylinder Bores    
    Standard at Assembly     Repair Limit (1)     Service Limit (2)    
Inside Diameter    
94.000 to 94.035 mm (3.7008 to 3.7022 inch)    
94.200 mm (3.7087 inch)    
94.700 mm (3.7283 inch)    
Out of Round    
0.010 mm (0.0004 inch)     N/A     N/A    
Taper    
0.015 mm (0.0006 inch)     N/A     N/A    
( 1 ) Bore the cylinder to the specified oversize dimension if the repair limit has been reached.
( 2 ) Install a cylinder liner or replace the cylinder block if the service limit has been reached.Bore the cylinder to the oversize dimension if the cylinder has uneven wear. Refer to Table 2.
Table 2
Oversize Bore     Cylinder Bore Size    
0.250 mm (0.0100 inch)    
94.250 mm (3.7106 inch)
94.285 mm (3.7120 inch)    
0.500 mm (0.0197 inch)    
94.500 mm (3.7205 inch)
94.535 mm (3.7218 inch)    Note: Refinish all liners to the same oversize dimension. Use a ridge reamer in order to cut the ridge of the cylinder if the bore is in good condition. Use the pistons and piston rings of the same oversize.