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Type: Posts; User: john maddock

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  1. Replies
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    Re: Hydraulics myths

    To coin a phrase: it's complicated!

    Brendan Casey explains:

    Hello John,
    In your last hydraulics bulletin, I talked about the leakage characteristics of spool-type and poppet-type...
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    Re: Hydraulics myths

    Brendan Casey on valves:

    Hello John,
    In your last hydraulics bulletin, I explained how an infrared thermometer or heat gun is an excellent tool for quickly locating internal leakage in...
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    Re: Hydraulics myths

    Another useful trick from Brendan Casey:

    Hello John,
    In your last hydraulics bulletin, I outlined a procedure for determining whether the root cause of an overheating problem lies in the...
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    Re: Hydraulics myths

    Overheating hydraulics

    Hello John,
    In your last hydraulics bulletin, we discussed what causes a hydraulic system to overheat.
    Today I want to explain a technique that is very useful...
  5. Re: How to start a cold Allis Chalmers HD6 dozer engine

    As far as I can tell, no decompression system of any sort. However, I've recently made contact with another owner, who says his machine does have a decompression lever. He will try to make a visit...
  6. How to start a cold Allis Chalmers HD6 dozer engine

    Yet another problem for the BFF Brains Trust.

    On another thread, I mentioned the purchase of an AC HD6. The P.O. started it on a cold morning by simply standing on the starter switch for several...
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    Re: Jack's Crop Report

    Hello Ironhead

    An interesting commentary, thank you.

    Some years ago I joined a (non-agricultural) bus tour of those areas, and was somewhat dismayed by the geology and dearth of soil in many...
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    Re: Rolling resistance

    I know. This federal government couldn't raise a sweat in a sauna. Totally useless! Can't organise vaccinations, can't organise quarantine, the Crikey newsletter has published a list of the PM's lies...
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    Re: Hydraulics myths

    More from Hydraulics warehouse:

    Today I want to deal with a question that I'm often asked by hydraulic equipment users:
    When it comes to the oil's operating temperature - how hot is too...
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    Re: Rolling resistance

    No, no! Can't level the place! I'd lose too much acreage! Looking forward to seeing you, btw:).

    JV
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    Re: So cunning!

    No. Only saw the first 30 seconds! A 1913 invention, so why is it not made & sold widely? Perhaps a limited market, but for holding an odd shaped piece... what better?

    JV
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    So cunning!

    I dips me lid to the brain behind it:

    https://twitter.com/MachinePix/status/1410299515337330688?s=20

    JV
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    Re: Rolling resistance

    Affirmative. Say no more! :rolleyes:
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    Re: Hydraulics myths

    More good info from Brendan Casey. Note the link towards the end - might save you a bundle at a critical time.

    Hello John,
    In your last couple of hydraulics bulletins, we've discussed four...
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    Re: Rolling resistance

    Very good safety points FF. Thank you.

    Museum? Started years ago! My Dad seldom threw anything away - and he taught me well! Toyota Crown cars in various states from registerable to parts only,...
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    Re: Rolling resistance

    You can relax, Exfarmer & Upnorth.

    Yesterday I bought an Allis Chalmers HD6 dozer, with which to pull the yet-to-be-built roller.

    Looks very much like this one:
    ...
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    Re: Hydraulics myths

    The next tip from Brendan Casey:

    Hello John,
    In your last hydraulics bulletin, we talked about how to check cylinder rod buckling loads and stop your cylinder rods from bending - to...
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    Re: Hydraulics myths

    Happy to Ironhead, although I expect they'll stop in due course - unless Brendan Casey is reading this and writes a few extra just for BFFers! :)

    I have to admit the first one still stresses my...
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    Re: Hydraulics myths

    More from Brendan Casey:


    Hello John,
    In your last hydraulics bulletin, we discussed the cylinder life extension benefits presented by alternative rod surface treatments.
    Today I...
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    Re: Hydraulics myths

    Traps! More from Brendan Casey

    John,

    Clause 5.4.6.5.1 a) of ISO 4413 "Hydraulic fluid power - General rules and safety
    requirements for systems and their components" states: "hose...
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    Re: Hydraulics myths

    Hello John,
    In your last hydraulics bulletin, I explained the benefits of installing a bellows or shroud on a hydraulic cylinder.
    Today I want to talk about alternative rod-surface...
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    Re: Hydraulics myths

    The next installment from Brendan Casey:

    Hello John,
    In your last few hydraulics bulletins, we've talked about repairing and testing hydraulic cylinders.
    Today I want to explain...
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    Re: Hydraulics myths

    The next installment from Brendan Casey:info too good to not pass it on :)


    Hello John,
    In your last hydraulics bulletin, I explained how to use volumetric efficiency to correctly...
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    Re: Hydraulics myths

    More from Brendan Casey:

    Hello John,
    In your last couple of hydraulics bulletins, we talked about how to avoid troubleshooting mistakes by checking and eliminating the easy things...
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    Re: 3 phase : rotation of motor.

    If it has an auto cutoff switch, it will be a very useful tool. I fitted a limit switch which operates when the blade cuts through and drops a few millimetres. Insert the material to be cut, press...
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