Grey market 312 shutoff solenoid

[Nige]

Find wire 332-BU at the shutoff relay and check to see if it has continuity to ground at all times irrespective of the position of the key switch or the master disconnect switch. If it does then the Eng/Pump Control Unit is defective.

 

[aubuchon72786]

So how do I do this test

 

[Nige]

So how do I do this test

You're not good with electrics I take it.?
In that case it would probably be quicker & easier to get hold of someone who is.

 

[aubuchon72786]

Cat is a 2 hour ride for parts but I found this one, will it work its 24 volts

 

[aubuchon72786]

 

[Nige]

You don’t even know what’s wrong yet. If the Eng/Pump control is defective then changing a solenoid is not going to fix the problem. The E/P Control is what signals the solenoid to operate.

 

[aubuchon72786]

Cat told me to try disconnecting wire 332 and turn key switch on to check for power on pink wire which was only 8 volts

 

[Nige]

Cat told me to try disconnecting wire 332 and turn key switch on to check for power on pink wire which was only 8 volts

There should be no power at all on the pink wire with the key in the ON position. From that it appears the solenoid could be dodgy.

You need a 9X-8124. Physically it must be quite a small item, it's not like it is being asked to power a starter motor. I have no idea what they look like so cannot comment on your photo above. EDIT: Found a photo.

 

[aubuchon72786]

Ecm must be bad do u have a part number

 

[Nige]

Ecm must be bad do u have a part number

Original Part Number is 4I-5383. There are updated numbers 106-0102 or 106-0167. Any of the three will work.
Cat also sell a Reman control under Part Number 30R-0045.

I think you need to be sitting down when you ask the price........

A work-around is possible because all that is needed to operate the 9X-8124 shutdown relay, thus activating the shutdown solenoid, is a connection to ground from terminal "L" of the relay.

First the 332-BU wire should be disconnected from terminal "L" of the shutoff relay and taped up out of the way. Then run a new wire from the "L" terminal to one terminal of a switch in the cab. A push-button horn switch switch should work just fine. Connect the other terminal of the switch to machine frame ground.

What you have now.



What you need. To stop the engine simply press the push button switch until the engine stops then turn the key switch to the OFF position.

.

 

[aubuchon72786]

Is it possible altinator is sending wrong signal

 

[Nige]

Is it possible altinator is sending wrong signal

So long as the system is charging (have you checked it.?) the alternator is the least likely suspect.

 

[aubuchon72786]

It's charging but the light on monitor says it's not

 

[Nige]

Well before dropping over $1000 on a new engine/pump controller I think you need an auto-electrician to check out the complete electrical/electronic system. There’s only so much that can be advised on from a distance.