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  1. O

    303.5 Dead hydraulics.

    Update. Removed both solenoids and applied power to both, each seemed kind of lazy. Gave them a squirt of WD40 and refitted. Also released some pressure from the system. My instinct is that it was the solenoids were stuck. I Charged the battery started it up and hydraulics worked, jumped in...
  2. O

    303.5 Dead hydraulics.

    Apologies...was in Spain for a few days R&R...will update when I get a chance to go back at it...very grateful for the pointers and will definitely update thread with progress or lack thereof...
  3. O

    303.5 Dead hydraulics.

    That's very interesting...certainly will give that a try...thanks again. I think the disable will also act on the flow through the 2 speed solenoid, so swapping connectors won't tell me anything, but they are easy to access with the covers off.....
  4. O

    303.5 Dead hydraulics.

    I took a more simplistic route, I read the schematic to say that the relay when engerised connected the brown to the green wire, which took power to the hydraulic disable solenoid via M927. A test light shows good power at the brown with machine running (even with the armrest up! Suggesting...
  5. O

    303.5 Dead hydraulics.

    Thanks for that. All fuses are ok. The disable relay clicks when the lockout switch is activated. Also No joy when I jump that relay. Freezing and raining here (Ireland) now so abandoned until tomorrow. Hopefully I will have access to multimeter and some test leads at that stage, and I will...
  6. O

    303.5 Dead hydraulics.

    Just looking at the schematic, I am thinking the hydraulic disable relay is first point to check,? this area seems to have gotten wet as the drain at the door catch has rusted through and water is dripping into that part of the cab. If not the relay then the hydro disable solenoid...?
  7. O

    303.5 Dead hydraulics.

    Serial number is AFW01020*
  8. O

    303.5 Dead hydraulics.

  9. O

    303.5 Dead hydraulics.

    Apologies for posting on another forum already. Any help would be appreciated. I have a 303.5 with less than 2000 hours on it. It has never had any issues in the past. It has not been used seriously in 10 years but it has been moved around the garden and used to do maybe 20 minutes of scraping...
  10. O

    2001 CAT 303.5 no hydraulics operating after 10 weeks non use.

    Any help would be appreciated. I have a 303.5 with less than 2000 hours on it. If has never had any issues ever in the past. It has not been used seriously in 10 years but it has been moved around the garden and used to do maybe 20 minutes of scraping... It was moved into a new position in...
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