TRANSFORMER AS 9Y9437 - Caterpillar

Engine:
G3516C (S/N: RWA1-UP; DKR1-UP; GHP1-UP)
G3520C (S/N: GDB1-UP; GHC1-UP; JBX1-UP; JBZ1-UP)
G3520E (S/N: GHR1-UP; GHM1-UP)
Generator Set:
G3516C (S/N: GSB1-UP; TJB1-UP; TJC1-UP; GZZ1-UP)
G3516E (S/N: GAS1-UP; SLY1-UP)
G3520C (S/N: MAD1-UP; GZJ1-UP; GZK1-UP; GZL1-UP; GZM1-UP; B9P1-UP; CWY1-UP)
G3520E (S/N: GZG1-UP; GZH1-UP; HAL1-UP; SXY1-UP)
Description of Change: A new joint assembly for the compressor bypass uses a seal that is made from an improved high temperature material.Adaptable To: The new 255-6464 Joint uses the improved 255-6466 Seal. The new joint assembly and the seal are used in engines that were built after July 2004. Table 1 lists the new parts and the former parts.
Table 1
New Parts and Former Parts    
Lines Group     New Part     Former Part    
220-2967     255-6464 Joint     4S-1299 Joint    
255-6465 Joint 134-3541 Joint    
255-6466 Seal 9X-7519 Seal    
Illustration 1 g01214967
Top View (1) 255-6464 Joint (2) 255-6465 Joint During assembly, do not overtighten the clamps.Torque for the clamp on the 255-6464 Joint ... 12 0.5 N m (8 1 lb ft)Torque for the clamp on the 255-6465 Joint ... 16 0.5 N m (11 1 lb ft)