Return-Path: Received: from mblk-r31 (mblk-r31.mblk.aol.com [152.163.179.21]) by air-id09.mx.aol.com (v104.18) with ESMTP id MAILINID92-3e1b423b0385ad; Fri, 18 Mar 2005 11:36:21 -0500 Date: Fri, 18 Mar 2005 11:36:21 -0500 From: mquinns@aol.com Message-Id: <8C6F9EFC0BCE31E-858-CA21@mblk-r31.sysops.aol.com> X-MB-Message-Source: WebUI X-MB-Message-Type: User Received: from 207.126.196.16 by mblk-r31.sysops.aol.com (152.163.179.21) with HTTP (WebMailUI); Fri, 18 Mar 2005 11:36:21 -0500 X-Mailer: AOL WebMail 1.0.0.11984 Subject: Oildyne Hydraulic Pump - 108AM19-CLB-3VT Content-Type: multipart/alternative; boundary="--------MailBlocks_8C6F9EFC0B5BC19_858_DAC5_mblk-r31.sysops.aol.com" MIME-Version: 1.0 To: vkiffmeyer@parker.com X-AOL-IP: 152.163.179.21 ----------MailBlocks_8C6F9EFC0B5BC19_858_DAC5_mblk-r31.sysops.aol.com Content-Type: text/plain; charset="us-ascii" Vern, Mike in customer service gave me your e-mail address so I could communicate with you on a problem I have had with my hydraulic pump. The pump was manufactured in 11/98 and sat on the shelf for six years before I installed it this past January (2005). The unit operates but appeared to be fighting itself when the high pressure circuit was engaged. On advice from a friend, I installed a pressure guage on both high and low pressure side. This was a good move in that it showed that when the high pressure side was engaged the low pressure was operating at the same time (fighting itself). The high pressure side would show 1100 psi at the same time the low pressure side would show 500 psi. A number of friends that use exactly the same pump told me that this was a dead giveaway for an incorrectly (reversed) installed spool valve. They said a large number of pumps left the factory with this problem but it was very easy to correct. I have received a photograph of the disassembled valve train showing the spool valve that should have the O-ring towards the high pressure side. I removed the two end plugs and the small needle valves but have been unable to remove the valve seats from both sides and the spool valve. I was told there can be substantial resistance by the o-rings but am unwilling to apply significant force which might damage the assembly. Could you give me some direction on whether the above described process and diagnosis is correct. Also if it is, how do I get the seats and spool valve out without damage. I presume I should change the o-rings if it does come out but how much force is enough to get it out. Any advice would be appreciated. THANKS MARK QUINN DAYTONA BEACH, FLORIDA ----------MailBlocks_8C6F9EFC0B5BC19_858_DAC5_mblk-r31.sysops.aol.com Content-Type: text/html; charset="us-ascii"
Vern,
   Mike in customer service gave me your e-mail address so I could communicate with you on a problem I have had with my hydraulic pump. The pump was manufactured in 11/98 and sat on the shelf for six years before I installed it this past January (2005). The unit operates but appeared to be fighting itself when the high pressure circuit was engaged. On advice from a friend, I installed a pressure guage on both high and low pressure side. This was a good move in that it showed that when the high pressure side was engaged the low pressure was operating at the same time (fighting itself). The high pressure side would show 1100 psi at the same time the low pressure side would show 500 psi. A number of friends that use exactly the same pump told me that this was a dead giveaway for an incorrectly (reversed) installed spool valve. They said a large number of pumps left the factory with this problem but it was very easy to correct. I have received a photograph of the disassembled valve train showing the spool valve that should have the O-ring towards the high pressure side. I removed the two end plugs and the small needle valves but have been unable to remove the valve seats from both sides and the spool valve. I was told there can be substantial resistance by the o-rings but am unwilling to apply significant force which might damage the assembly.
   Could you give me some direction on whether the above described process and diagnosis is correct. Also if it is, how do I get the seats and spool valve out without damage. I presume I should change the o-rings if it does come out but how much force is enough to get it out. Any advice would be appreciated. THANKS
 
MARK QUINN
DAYTONA BEACH, FLORIDA 
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