[AT] Hydraulic hoses

[charliehill]

David, I pretty well knew what you were doing just from knowing you.  I just 
try to remember that we never know who is reading the list archives and 
relying on what we say here.  I've always thought that accuracy is the one 
thing we owe Spencer more than anything else.  We tend to forget but think 
about the books that have been written based on knowledge acquired from this 
list.  I don't mean Spencers books in particular but books in general that 
many of us on this list have contributed to and been credited in.

Charlie
----- Original Message ----- 
From: "David Bruce" <davidbruce at yadtel.net>
To: "Antique tractor email discussion group" <at at lists.antique-tractor.com>
Sent: Thursday, August 13, 2009 9:19 AM
Subject: Re: [AT] Hydraulic hoses


> No problem Charlie.  I didn't make myself clear as I could in the first
> post.  That particular instance was a test after replacing the hoses on
> the old unit to check for leaks and yes was an extreme situation.  It
> did help me find some leaky connections the last of which I'll be
> addressing soon.
>
> David
> NW NC
>
> charliehill wrote:
>> LOL, David I wasn't being critical of you BUT if you don't leave it up 
>> you
>> don't need to worry about leak down.  Being left up is what causes leak
>> down.  When you are running the tractor with the lift up, the pump is
>> running, the fluid is by passing and there is constant pressure on the
>> system.  When you cut the motor off with the lift raised the fluid trys 
>> to
>> leak backwards through the system and out around the seals.
>>
>> Charlie
>> ----- Original Message ----- 
>> From: "David Bruce" <davidbruce at yadtel.net>
>> To: "Antique tractor email discussion group" 
>> <at at lists.antique-tractor.com>
>> Sent: Thursday, August 13, 2009 8:01 AM
>> Subject: Re: [AT] Hydraulic hoses
>>
>>
>>> All good points and to clarify I don't store the tractor with the loader
>>> raised but I have left it in a raised position to check for leak down.
>>>
>>> David
>>> NW NC
>>>
>>> Mike Sloane wrote:
>>>> Not to lecture, but the instructions for virtually all hydraulic
>>>> equipment state, when done with the machine even for only a few 
>>>> minutes,
>>>> to lower everything to the ground and relieve the pressure on all 
>>>> valves
>>>> by cycling them. There are two issues here: 1. safety - a raised boom 
>>>> or
>>>> other tool can drop very quickly if someone accidentally moves a lever
>>>> or a hose fails, and it could fall on someone in the area, and 2.
>>>> leaving pressure on the system when idle puts a strain on the system 
>>>> and
>>>> can cause premature wear (especially old hoses). Also, kids love to 
>>>> play
>>>> on idle machines and love working all the levers.
>>>>
>>>> Just my 2 cents,
>>>>
>>>> Mike
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