What are these Pressure Switches

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What are these Pressure Switches

February 20, 2020, 06:12:58 pm

These switches are in the front most compartment on the driver side. They are above and aft of the steering gear. What do they control? Thanks.
jor

Re: What are these Pressure Switches

Reply #1 – February 20, 2020, 06:16:36 pm

Low air pressure warning?

Re: What are these Pressure Switches

Reply #2 – February 20, 2020, 06:21:24 pm

Any numbers on the air lines going in or out of switches?

Re: What are these Pressure Switches

Reply #3 – February 20, 2020, 06:29:12 pm

The best way to find out what they are is to put a signal tracer on the wire at the switch and follow where it goes. Start looking in the dash area. You'll probably find it there around a warning light or relay. Have a great day ---- Fritz

Re: What are these Pressure Switches

Reply #4 – February 20, 2020, 07:45:31 pm

They may be the brake light switches re your schematic.

Re: What are these Pressure Switches

Reply #5 – February 21, 2020, 10:58:17 am

Not the brake light switches. Those are in the same compartment but located on the forward wall. See photo. I'll check for numbers. I'm familiar with the electric wire numbers but wasn't aware that the air lines were numbered too. I have a toner and will give that a try too. Thanks.
jor

Re: What are these Pressure Switches

Reply #6 – February 21, 2020, 10:29:28 pm

These pressures switches will set off the dash alarm when pressure is below 50 lbs. Watch for corrosion I have had the cap separate from the body and open the air line.

Re: What are these Pressure Switches

Reply #7 – February 23, 2020, 04:43:09 pm

Quote

These pressures switches will set off the dash alarm when pressure is below 50 lbs

Thanks for this information.
jor

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What are these Pressure Switches

February 20, 2020, 06:12:58 pm

Re: What are these Pressure Switches

Reply #1 – February 20, 2020, 06:16:36 pm

Re: What are these Pressure Switches

Reply #2 – February 20, 2020, 06:21:24 pm

Re: What are these Pressure Switches

Reply #3 – February 20, 2020, 06:29:12 pm

Re: What are these Pressure Switches

Reply #4 – February 20, 2020, 07:45:31 pm

Re: What are these Pressure Switches

Reply #5 – February 21, 2020, 10:58:17 am

Re: What are these Pressure Switches

Reply #6 – February 21, 2020, 10:29:28 pm

Re: What are these Pressure Switches

Reply #7 – February 23, 2020, 04:43:09 pm

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