Cat 257b not starting.

[David Campbell 1461]

After a bid of troubleshooting, I’ve determined that I’m not getting power to the fuel cut off solenoid. The fuse is good but no power. Ideas?

 

[Nige]

If you post a Serial Number an electrical schematic could be provided that would assist you in tracing where the power is disappearing.

 

[David Campbell 1461]

SLK3224

 

[heymccall]

Same as 248b

 

[Nige]

Take a good look at the bottom of page 12 (Harness & Wire Symbols) and the tables in the bottom RH corner of Page 13. They will help you a lot when it comes to interpreting what wires do and how to figure out references.

 

[thepumpguysc]

Safety switch.??
Blown fuse.??
Have u hot wired the solenoid to see if it’s good. (Engine starts)

 

[David Campbell 1461]

Same as 248b

Thank you very much for the schematic. I was able to trace the wiring and found a wire that hade gotten broken when we changed a hose last week. just bought the machine 2weeks ago. Still have a lot to learn about it.

 

[David Campbell 1461]

Take a good look at the bottom of page 12 (Harness & Wire Symbols) and the tables in the bottom RH corner of Page 13. They will help you a lot when it comes to interpreting what wires do and how to figure out references.

Thanks for the pointers. It was a lot of help!

 

[David Campbell 1461]

Safety switch.??
Blown fuse.??
Have u hot wired the solenoid to see if it’s good. (Engine starts)

Found the problem. Thanks for the help.

 

[Nige]

Found the problem.

And it was.......??
So that anyone else with a similar issue can get the benefit.

 

[David Campbell 1461]

It was a wire that had gotten pulled loose when we changed a hose. For some reason it was not in the harness and was spliced.

 

[Nige]

It was a wire that had gotten pulled loose when we changed a hose. For some reason it was not in the harness and was spliced.

Ah ha. So somebody got creative with the wiring at some point in the past.?