CAT 236b work lights won’t come on

[Curtis Graves]

Hoping for some help here. I have a CAT 236b skid steer and the lights on the front and rear have stopped working. The rocker switches still glow when turned on but the lights will not come on. I have checked the fuse box and the fuses are good. Is there a relay or something else? I’ve looked for a schematic for the Lightning and haven’t been able to find one. Thanks!

 

[heymccall]

Nope. If fuse to lamps is bad, the rockers won't glow when switched on. You've got yourself a case of 4 burned out lamps.

 

[heymccall]

For the schematic of a 236b, it's the RENR6419-06 download in post #4 here...
https://www.heavyequipmentforums.com/threads/cat-287b-back-up-alarm-switch.75040/

 

[seville009]

Check the wiring too......mice might have chewed something up

 

[kshansen]

For the schematic of a 236b, it's the RENR6419-06 download in post #4 here...
https://www.heavyequipmentforums.com/threads/cat-287b-back-up-alarm-switch.75040/

This would assume when you say it's a 236B it is just a plane 236B and not a 236B2 or 236B3.

Always very important to give as much details as possible, full S/N is the best. That is unless the machine was stolen and the FBI was told the S/N by the guy you stole it from

There appear to be at least 5 or 6 wiring schematics for the various 236B machines depending on the actual S/N if you take in to account the different versions of the 236B's like the 2 and 3.

I'd start by opening up the non-working lights and check for voltage with switch on. Sometimes no one complains about failed lights till the last one quits working!

 

[Curtis Graves]

I’ll get the serial number and post it in a bit. I actually broke all of the lights off over time and decided to replace all 4 of them so that’s not the case. Also have checked voltage at the connectors and nothing. I took the console apart and checked the wiring at the rocker switches and it all good as well.

 

[kshansen]

Okay so if you have power out of the rockers but none at the light end of wires seville009's pet mice might be the problem!

 

[Nige]

Get the electrical schematic and start to trace the wiring starting from the work light switch (which apparently has power if I understand you correctly) towards the lights themselves would appear to be the logical next step.