SEAL-LIP TYPE 3743667 - Caterpillar

Measurement of Components
Shaft
Illustration 2 g01212524
Table 1
Shaft    
Part Number     Diameter (A)     Diameter (B)    
5I-7695    
25.000 + 0.011 − 0.002 mm (0.9843 + 0.0004 − 0.0001 inch)    
13.000 + 0.000 − 0.015 mm (0.5118 + 0.0000 − 0.0006 inch)    
178-6635
183-8233    
25.000 + 0.011 − 0.002 mm (0.9843 + 0.0004 − 0.0001 inch)    
15.500 + 0.000 − 0.013 mm (0.6102 + 0.0000 − 0.0005 inch)    In order to remove the shaft, refer to Disassembly and Assembly, "Water Pump - Disassemble" for your machine.
Illustration 3 g01213784
Use a micrometer in order to measure the diameters of the shaft. Measure the shaft in several locations. If the shaft does not meet specifications, replace the shaft.Impeller
Illustration 4 g01212553
Table 2
Impeller    
Part Number     Bore Size (C)    
5I-7694    
13.000 + 0.047 − 0.062 mm (0.5118 + 0.0019 − 0.0024 inch)    
178-6634    
15.500 + 0.035 − 0.062 mm (0.6102 + 0.0014 − 0.0024 inch)    The bore of the impeller is a press fit to the shaft.In order to remove the impeller from the shaft, refer to Disassembly and Assembly, "Water Pump - Disassemble" for your machine.
Illustration 5 g01213803
Use a dial bore gauge in order to measure the bore of the impeller. If the bore of the impeller does not meet specifications, replace the impeller.Housing
Illustration 6 g01212556
Table 3
Housing    
Part Number (1)     Bore Size (D)     Bore Size (E)    
125-2989
178-6633
183-8232    
52.000 + 0.018 − 0.012 mm (2.0472 + 0.0007 − 0.0005 inch)    
62.000 + 0.018 − 0.012 mm (2.4409 + 0.0007 − 0.0005 inch)    
( 1 ) The housing is nonserviceable. You must purchase the complete pump assembly if the housing is not reusable.In order to remove the bearings from the housing, refer to Disassembly and Assembly, "Water Pump - Disassemble" for your machine.Use a dial bore gauge in order to measure the bores for the bearings. If the bores do not meet the specifications, replace the pump assembly.Flange
Illustration 7 g01213563
Table 4
Part Number     Bore Size (F)    
5I-7696    
24.946 to 24.963 mm (0.9821 to 0.9828 inch)    The bore of the flange is a press fit to the shaft. The flange bolts to the pulley.In order to remove the flange from the shaft, refer to Disassembly and Assembly, "Water Pump - Disassemble" for your machine.Use a dial bore gauge in order to measure the bore of the flange. If the bore does not meet specifications, replace the flange.