2000/04/17 Caterpillar


The Torque For The Nuts On The Injector Wiring Harness Has Been Increased {1290}

Usage:

65E 1GM
Agricultural Tractors:
75D (PIN: 5AR1-UP)
85D (PIN: 4GR1-UP)
65E (PIN: 1GM1-UP; 6GS1-UP)
75E (PIN: 1HM1-UP; 6HS1-UP)
85E (PIN: 1NM1-UP; 6JS1-UP)
95E (PIN: 1SM1-UP; 6KS1-UP)

Description of Change: The torque for nuts (1) on the wiring harness assembly for the fuel injector has been increased. The former torque was 1.70 ± 0.25 N·m (15 ± 2 lb in). The specified torque for the nuts has been increased to 2.50 ± 0.25 N·m (22 ± 2 lb in). The increase in torque will help prevent problems with continuity and problems with electrical shorts.




Illustration 1g00660845

Adaptable To: The increased torque for the nuts on the wiring harness assembly for the fuel injector is effective with the following machines that are listed in Table 1.

Table 1
Effective With The Following Machines    
Sales Model     Product Identification Number (PIN)    
Challenger 65E     (PIN: 1GM218-UP; 6GS403 and 405-UP)    
Challenger 75E     (PIN: 6HS403 and 406-UP; 1HM240-UP)    
Challenger 85E     (PIN: 1NM213-UP; 6JS407 and 412-UP)    
Challenger 95E     (PIN: 1SM214-UP; 6KS529 and 534-UP)    
The increased torque for the nuts on the wiring harness assembly for the fuel injector is adaptable to all of the machines that are listed in Table 2.

Table 2
Adaptable To The Following Machines    
Sales Model     Product Identification Number (PIN)    
Challenger 75D     (PIN: 5AR1-UP)    
Challenger 85D     (PIN: 4GR1-UP)    
Challenger 65E     (PIN: 1GM1-217; 6GS1 and 402-404)    
Challenger 75E     (PIN: 6HS1-402 and 404-405; 1HM1-239)    
Challenger 85E     (PIN: 1NM1-213; 6JS1-406 and 408-411)    
Challenger 95E     (PIN: 1SM1-213; 6KS1-528 and 530-533)    
The increased torque for the nuts on the wiring harness assembly for the fuel injector affects the following modules for the service manuals. Refer to Table 3.

Table 3
Service Manuals That Are Affected By The Increased Torque    
Engine Model     Serial Number     Service Manual     Disassembly and Assembly     Specifications Module    
3176     (S/N: 43Z1-00597)     SENR5325, SENR5255     SENR4965     SENR4963    
3176B     (S/N: 43Z00598-UP)     SENR5325, RENR1670, SENR5255, SENR8465     SENR6445     SENR6640    
Make a note of the torque increase in the appropriate modules.

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