TOOL 2W9102 - Caterpillar

Table 1
Effectivity of the Improved Valve Guides    
Model    Effective Product Identification Numbers    
311B     PIN: 8GR614, 8HR1571, 2LS321, 2MS207
   
312B     PIN: 9GR528, 9HR4967, 2NS187, 3ES236
   
312B L     PIN: 8JR1698, 3FS374
   
320B     PIN: 5BR1991, 9JS336, 8GZ1311
   
320B L     PIN: 6CR5149
   
320B LU     PIN: 7ZZ302
   
320B LL     PIN: 6LS368
   
321B LCR     PIN: 9CZ325
   
Table 2
Improved Valve Guides    
Model     Quantity     New Part Number     Description     Former Part Number    
311B, 312B     1     185-8991     Cylinder Head (Assembly)     5I-8103    
4 183-8172     Guide     5I-7729    
4 183-8173     Guide     5I-7635    
320B, 321B     1     183-8171     Cylinder Head (Assembly)     5I-8051    
1 183-8174     Cylinder Head (Assembly)     5I-8052    
3 183-8172     Guide     5I-7729    
3 183-8173     Guide     5I-7635    
Illustration 1 g00702228
This is a typical application of a cylinder head. The graphic is of a 183-8174 Cylinder Head . (1) 183-8172 Guide (2) 183-8173 Guide