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Message: <blockquote data-quote="Fishfiles" data-source="post: 7026" data-attributes="member: 782"><p>On T 250's there is a gauge on the bottom left side the screen that is mounted on the right console , this bar gauge gives you the charge pressure which on this serial number and type is 390 to 430 psi at a fast idle , there is a bar under the gauge line that marks the minimum of the scale where the buzzer comes on and shutdown occurs after about 30 seconds ----the machine started with two problems at close to the same time which maybe be connected , first off it started shutting with a charge pressure extremely low warning , and I was told a couple of hours later it blew a travel motor and locked up the track on one side , changed the travel motor , the case drain rock filter and the hydraulic filter , cranked up and travel ok but machine still shutting down at idle or run , checked the drive belt and seemed a little loose so put a new belt , the results changed and they were that it would stay running at any rpm over 1600 but not below , the vital gauges menu on machine showed 157 psi at idle and 427 psi at full rpm's , about 230 psi at 1600rpm's and shut down anything less than 230 , so you have to keep it reved up to stay running , hooked in a manuel gauge into the system and found it right on with the machines readings so it is not a sending unit/sensor , wiring issue or controller /console problem , it's not a relief problem either as it gets to 430 and you can see the relief set in on the manuel gauge , I really think it's the charge pump , which is the other stage of the two stage gear pump mounted on the end of the sunstrand travel pump , here is the stumper , the charge pressure hose goes from the charge pump to a tee on the back side of the first section of the sunstrand then to the controll valve of the machine , so I am not totally asured that it is the charge pump causing the lost of pressure as I am not sure if pressure for the charging system can or can't be lost inside of the sunstrand or if the sunstrand is the problem itself ----I cut open the hydraulic filter and ran a magnet thru the element fins and it is full of ground up particles , the hydraulic filter was changed last in december and only had about 350 hours on it ---here is something I would like to know as I have never paid attention to it while on other 250's , I noticed that the charge pressure would drop dramaticly while traveling but stay pretty firm while using the bucket or boom , does any one with a 250/300 ever pay attention to what the charge pressure gauge is doing during operation of their machine ------- a manuel would sure help , may have to break down and buy one tomorrow</p></blockquote><p></p>

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