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  1. G

    Cat 627B Scraper Transmission Issues

    It's 7N-8001
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    Cat 627B Scraper Transmission Issues

    Yes in the cab. Here are some pictures. That is the switch Cat got me.
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    Cat 627B Scraper Transmission Issues

    I am looking for a new transmission neutral/run switch with 3 pins on the back to match the current one. Need power in the center and then "Neutral" on one side and "Run" on the other. Tried through Cat and they got me a 2 pin switch and can't seem to find the correct one.
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    Cat 627B Scraper Transmission Issues

    I started tracing wires from the transmission neutral/run switch and found a faulty manual transmission switch on the tractor. I had the machine running and in neutral. Measured 24 volts at the neutral terminal but also 19 volts at the reverse terminal. Switched to "Run" and put it in 1st...
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    D5M Brake Issue

    Can you explain briefly what the PV does?
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    D5M Brake Issue

    LH brake applied : 0 psi. Released 400 psi RH brake applied : 0 psi. Released 400 psi Both brakes applied via pedal : 0 psi
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    Cat 627B Scraper Transmission Issues

    Not sure what I'm doing wrong but the email you just sent with the electrical schematics is telling me "Requested conversation could not be found".
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    D5M Brake Issue

    Here are the results of the lower PV pressure test. Park brake on low idle : 95psi Park brake off low idle : 400psi Park brake off high idle: 505psi Left service brake applied high idle : 500psi Right service brake applied high idle : 500psi Both brakes applied (foot pedal) : 500psi
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    D5M Brake Issue

    Can you send me that T/A document again. I had lost everything you sent.
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    Cat 627B Scraper Transmission Issues

    We have a Cat 627B scraper I have been working on. The tractor serial number is 15S983. The scraper serial number is wore off but we believe it is 38V00045. The issue is the tractor and scraper transmissions don't seem to be on the same page as far as shifting goes. The previous owner...
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    D5M Brake Issue

    Nige I followed the power train troubleshooting guide you sent and took some pressures. By the looks of the schematic there are two ports to test the PV? Below are the results. Top Priority Valve port by filter cover Brake On at 850 rpm : 425psi (spec 138psi) Brake Off at 850 rpm : 425psi...
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    Cat D5M (Nige)

    Nige please send another link to my DM. Everything you have been sending is gone including my first post on the D5M. Thanks
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