341 Auxilliary Pressure/Flow

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Miker67

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Mar 1, 2011
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70
I have a 2003 341 that I am running an MSD7R shear, a demo hammer, and an EX30 rotary flail on.
Right now, the machine is putting out 15 gpm at around 2200 psi on the auxilliary circuits. I am doing a job soon with the shear where I will need max pressure to get the most of the shear and I will also need the flail to have max power.
The specs say the machine should put out 20 gpm at 3000 psi. At first I though my pump was going out but the deal said it may be just a relief valve setting. I would take it by them, but they normally sit on it for about a month before they get to it. I can't have the machine down that long. I need it to work right now.
Does anyone know where the adjusters are they are refering to? I am familiar with hydraulics on other units, including the rexroth designs but I am unfamiliar with this particular machine.
Thanks in advance.
-Mike
 

7LBSSMALLIE

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Feb 2, 2012
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did not read that closely cause the first thing you have to is direct return oil back to tank
if yorue looking for clip and go you need speed on aux out if that oil has no place to go. it will slow you down. the direct to tank valve. may be an option
 
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Miker67

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Joined
Mar 1, 2011
Messages
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if yorue looking for clip and go you need speed on aux out if that oil has no place to go. it will slow you down. the direct to tank valve. may be an option
Thank you for responding. I do have the direct to tank kit already installed and in DTT mode while operating.
 

7LBSSMALLIE

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Messages
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Thank you for responding. I do have the direct to tank kit already installed and in DTT mode while operating.
now you did run youre flow check spec says 20? youre getting 15 that is 75% of pump flow spec says 85% min I would catch it now before pump grenades into sys. assumption being that if you now how to a flow test you were smart enough to a direct pump test? haven't seen a 341 in awhile if memory serves its a trip stack. and running attach the way you do failure would not surprise. my advice do a direct pump check on all three. if flow is withen at least 85% (spec not gospel) tear down suspect pump. inspect repair or replace as needed. also why youre in there. doing flow and pressure checks. dial up all reliefs to hi side of spec. this is what I refer to as a hyd tune up. 150 psi on reliefes transmits a major difference at the sticks. good luck finding indv. parts for pumps. I know they are out there? but havening done this a time or three. seal kit aint going to do jack.
 
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