GASKET 1992176 - Caterpillar

Machine Engines:
3114
3116
3126
3126B
C-9Description of Change: A new stronger spring for the engine oil filter bypass valve and the engine oil cooler bypass valve has been released. The new spring has a higher spring rate and a higher preload when the spring is assembled. This combination of spring rate and preload improves cleanliness of the oil by allowing less oil to bypass the oil filter during cold starting conditions. Specifications for the spring have also changed. Refer to Table 1.
Table 1
Comparison of Springs    
Dimensions     New Spring     Old Spring    
Outside diameter     11.0 mm (0.43 inch)    
11.2 mm (0.44 inch)    
Free length    
58.5 0.50 mm (2.30 0.020 inch)    
57.9 mm (2.28 inch)    
Assembled length    
43.18 mm (1.70 inch)    
43.18 mm (1.70 inch)    
Load at assembled length    
43.7 N m (32.23 lb ft)    
4.7454 N m (3.5 lb ft)    
Direction of coils     Left hand     Right hand    
Number of coils     17 total coils
15 active coils     21 total coils
19 active coils    Adaptable To: The former 9L-9188 Spring has been replaced with the new 242-3864 Spring. The new spring can be used as a direct replacement for all earlier 3114, 3116, 3126, 3126B, and C-9 engines. Refer to Table 2 for the serial number breaks.
Table 2
Engine Model     Engine Serial Number    
3114     S/N:2FG07987
   
3116     S/N:2MR03588
   
3116     S/N:7TM04072
   
3116     S/N:3AF00152
   
3126B     S/N:5GG04332
   
3126B     S/N:BMA09198
   
3126B     S/N:CSW00485
   
3126     S/N:55K12065
   
3126     S/N:6JK11925
   
C-9     S/N:4ZF10043
   
C-9     S/N:SAN00243
   The engine has two of the 242-3864 Springs. One spring is used for the oil filter bypass valve and the other spring is used for the oil cooler bypass valve.Note: Engines that are equipped with a remote oil filter base require three 242-3864 Springs .The former 9L-9188 Spring has not been cancelled. The 9L-9188 Spring is still available for parts service in other applications of this spring.
Illustration 1 g01044967
(1) 242-3864 Springs